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Podcast
Family Medicine & Pharmacy Podcast
27
4
priority topics for family medicine and community pharmacy
priority topics for family medicine and community pharmacy
Onychomycosis
Episode in
Family Medicine & Pharmacy Podcast
Management of Onychomycosis in Canada in 2014 http://www.ncbi.nlm.nih.gov/pubmed/25775640
Drug name:
Brand:
SA
SA Criteria
SA Approval period
Direction
SE
Monitoring
Ciclopirox 8%
Penlac (nail lacquer)
No
Not covered
N/A
Nail lacquer: Apply bid to adjacent skin and affected nails daily. Remove with alcohol every 7 days (treat 4 weeks)
dermatitis, dry skin, local burning sensation
Efinaconazole
Jublia (nail lacquer)
Not covered
Not covered
N/A
Apply to affected toenails once daily for 48 weeks
Ingorwn nail (2%), dermatitis
Terbinafine tablets
Lamisil tablets
Yes
Severe onychomycosis
PLUS
functional disability
PLUS
positive KOH or dermatophyte culture of nail from a licensed lab.
First approval: Three months
Renewals: If required, up to three months.
250mg once daily for 6 weeks (fingernail); 250mg once daily for 12 weeks (toenails)
Headache (13%), diarrhea (6%), nausea, liver enzyme disorder (3%)
Monitor AST/ALT prior to initiation, repeat if used >6 weeks
Itraconazole
Sporanox
Yes
1. Immunocompromised pts/ Or 2. Pulse treatment for severe onychomycosis with functional disability
PLUS
confirmed lab results for candida or dermatophyte infection.
1. Immunocompromised pts approval is indefinite 2. 3 months approval for 2nd group of pts (No need for SA approval if prescribed by HIV/AIDS Dr)
Fingernail involvement: 200mg capsule twice daily for 1 week. repeat 1 week course after 3 week off time Toenails due to Trichophyton rubrum or T mentagrophytes: 200mg once daily for 12 consecutive weeks With or without fingernaikl involvement: 200mg once daily for 12 consecutive weeks Canadian labelling “Pulse dosing”: 200mg twice daily for 1 week, then repeat 1 week course twice with 3 week off time between each course
Diarrhea, nausea, headache, skin rash
Liver function in patients with pre-existing hepatic dysfunction, and in all patients being treated for longer than 1 month
fluconazole
Diflucan
Yes
1. Immunocompromised patients.
OR2. Exceptions on an individual basis for fungal infections resistant to first-line medications.
1 day to indefinite (no need for HIV and AIDS Dr to apply for SA)
The post Onychomycosis appeared first on Family Pharm Podcast.
23:27
Diabetes Medications and BC Coverage Information
Episode in
Family Medicine & Pharmacy Podcast
We are back! (Or your money back!)
In this episode, Billy and Tina discuss the PharmaCare coverage status of different classes of diabetes medications.
Sources:
BC PharmaCare Formulary: https://pcbl.hlth.gov.bc.ca/pharmacare/benefitslookup/
BC PharmaCare Special Authority: http://www2.gov.bc.ca/gov/content/health/practitioner-professional-resources/pharmacare/prescribers/special-authority
CDA Formulary Listings for Diabetes Medications in Canada by provinces and territories (Jan 2016): http://www.diabetes.ca/getmedia/c87009a8-29b6-4061-a52a-963d0b077e47/pt-formulary-listing-jan-18-2016.pdf.aspx
*In case the link doesn’t work: pt-formulary-listing-jan-18-2016
Class
drugs
Other therapeutic considerations
coverage
SA criteria
Biguanide
metformin
covered
Alpha-glucosidase inhibitor (acarbose)
acarbose
Improved postprandial control, GI side-effects
delisted
Incretin agent: DPP-4 Inhibitors
linagliptin (Trajenta)
SA
same as onglyza
sitagliptin (Januvia)
delisted
saxagliptin (Onglyza)
SA
As part of a combination treatment for type 2 diabetes mellitus, 1) When insulin NPH is not an option
AND
2) After inadequate glycemic control on maximum tolerated doses of dual therapy of metformin AND a sulfonylurea.
Incretin agent: GLP-1 receptor agonists
liraglutide (Victoza)
GI side-effects
not listed
Insulin
rapid acting (Humalog, novorapid, apidra)
No dose ceiling, flexible regiments
partial coverage
short acting (Humulin R, Novolin Toronto)
covered
NPH
covered
Premixed (Humulin 30/70, Novolin 30/70, 40/60, 50/50)
covered
Premixed (Humalog mix 25, mix 50, Novomix 30)
partial coverage
glargine (Lantus)
SA
A) Type 1 DM or B) Type 2 DM > 17 years old, and 1) requiring insulin and is currently taking insulin NPH and/or pre-mix insulin daily at optimal dosing
AND
2) Has experienced unexplained nocturnal hypoglycemia at least once a month despite optimal management
OR
3) Has experienced or continues to experience severe, systemic or local allergic reaction to existing insulin treatment.
detemir (Levemir)
SA
same as Lantus
new glargine (Toujeo)
not listed
Insulin secretagogue: Meglitinide
repaglinide (gluconorm)
Less hypoglycemia in context of missed meals but usually requires TID to QID dosing
not listed
Insulin secretagogue: Sulfonylurea
glyburide
Gliclazide and glimepiride associated with less hypoglycemia than glyburide
covered
gliclazide
SA (listed everywhere else in Canada)
Treatment failure or intolerance to at least one other sulfonylurea drug (e.g., glyburide, tolbutamide) at adequate doses.
SGLT2 inhibitors
canagliflozin (Invokana)
UTI, genital infections, hypotension, hyperlipidemia, caution with renal dysfunction and loop diuretics, dapagliflozin not to be used if bladder cancer, rare diabetic ketoacidosis (may occur with no hyperglycemia)
1 year manufacturer coverage with special plan
dapagliflozin (Forxiga)
1 year manufacturer coverage with special plan
empagliflozin (Jardiance)
not listed
TZD
rosiglitazone
CHF, edema, fractures, rare bladder cancer (pioglitazone), cardiovascular controversy (rosiglitazone), 6-12 weeks required for maximal effect
delisted
pioglitazone
SA
same as onglyza
Weight loss agent (orlistat)
orlistat
GI side effects
not listed
Combination Drugs
sitagliptin and metformin (Janumet)
delisted
linagliptin and metformin (Jentadueto)
SA
same as onglyza
The post Diabetes Medications and BC Coverage Information appeared first on Family Pharm Podcast.
21:12
What I learned from St Paul’s CME 2014 Part 1
Episode in
Family Medicine & Pharmacy Podcast
This is planned to be an 8-part series highlighting the take-home points I picked up during the St. Paul’s Hospital CME Conference 2014.
Pearls from Part 1 “Internal Medicine”:
Alcoholism – Dr. Paul Farnan
Screen alcohol use disorders routinely to catch those of whom do not appear to have a significant social or occupational impairment.
Use assertive statements to convey the concern regarding someone’s alcohol use.
Peer support is strongly recommended. Patients should try multiple meetings at different groups before concluding that they are not helpful, as the groups vary in their structure and member characteristics.
Medical treatments may be considered in select patients: naltrexone, acamprosate, disulfiram.
Gout – Dr. Hyon Choi
Screen for HLA-B*5801 in Asians (esp. Chinese, Thai, and Korean patients) before starting alopurinol.
Look for concurrent metabolic disorders.
“Medication in the pocket” strategy for acute flares: colchicine 1.2mg po x1 then 0.6mg po in 1 hour.
Use losartan or CCB for concurrent hypertension.
Low-carb diet and avoid foods with highest purine content.
Cellulitis – Dr. Val Montessori
Non-purulent cellulitis, most likely caused by Group A Strep, treat with cephalexin (Keflex) 500mg po QID
Purulent cellulitis, most likely Staph Aureus but still possibly GAS, treat with Septra DS PO BID, and cover GAS with Keflex.
Complicated wounds, consult ID.
HCV – Dr. Edward Tam
New therapy more tolerable and has a 95% cure rate, but also exceedingly expensive.
Refer all HCV RNA positive patients to hepatologists for assessment of treatment.
This Changed My Practice – Dr. Steve Wong
http://thischangedmypractice.com/
OSA – Dr. Pearce Wilcox
Co-morbidities with metabolic syndrome -> screen for metabolic syndromes in patients with OSA, and vice versa
The post What I learned from St Paul’s CME 2014 Part 1 appeared first on Family Pharm Podcast.
23:11
Family Pharm Podcast – RELAUNCHED!
Episode in
Family Medicine & Pharmacy Podcast
After a 6-month hiatus, Tina – now a newly-hatched PHARMACIST! – and Billy teamed up to relaunch this pet project with a plan to make it more interactive and less sleep-inducing. Did it work with this unscripted episode?
The post Family Pharm Podcast – RELAUNCHED! appeared first on Family Pharm Podcast.
03:43
ADHD 2: medications
Episode in
Family Medicine & Pharmacy Podcast
Tina concentrates on the details of ADHD medications and invites your attention to the following:
Non-pharmacological therapy
behavioural therapy
Stimulants
methylphenidate
amphetamines
Non-stimulants
atomoxetine
clonidine
other antidepressants and antipsychotics (to be covered in future episodes)
The post ADHD 2: medications appeared first on Family Pharm Podcast.
20:29
ADHD 1: CADDRA Guideline
Episode in
Family Medicine & Pharmacy Podcast
*This episode was recorded in January 2014.
This is the topic that started it all. As Tina planned to study ADHD for school, we discussed how this would be useful information for other pharmacy students and medical trainees as well.
We looked to the comprehensive CADDRA guideline for the assessment, differential diagnoses, and treatment strategies for ADHD.
CADDRA Guideline:
http://www.caddra.ca/pdfs/caddraGuidelines2011Chapter02.pdf
ADHD Checklist on CADDRA ADHD Assessment Toolkit, page 8.20
http://www.caddra.ca/pdfs/caddraGuidelines2011_Toolkit.pdf
The post ADHD 1: CADDRA Guideline appeared first on Family Pharm Podcast.
16:53
Gastroenteritis in Children
Episode in
Family Medicine & Pharmacy Podcast
Billy looked at the following guidelines to summarize the approach to a child with gastroenteritis:
UK NICE Guideline: Diarrhoea and vomiting in children under 5 (Issued: April 2009) http://guidance.nice.org.uk/cg84
CPS Guideline: Oral rehydration therapy and early refeeding in the management of childhood gastroenteritis (Posted: Nov 1, 2006) http://www.cps.ca/documents/position/oral-rehydration-therapy
History:
onset of diarrhea and/or vomiting (gastro is sudden in onset)
duration of vomiting and diarrhea (diarrhea 5-7 days, max 2 weeks; vomiting 1-2 days, max 3 days)
sick contact
pathogen exposure
travel history
History suggestive of increased risk of dehydration:
young age (esp <6mo)
low birth weight infants
>5 diarrhea in 24h
>2 vomiting in 24h
no oral intake
signs of malnutrition
Think about differential diagnosis if:
fever >38 in children younger than 3 months
fever >39 in children older than 3 months (fever workup required)
shortness of breath or tachypnoea
altered conscious state
neck stiffness
bulging fontanelle in infants
non-blanching rash
blood and/or mucus in stool
bilious (green) vomit
severe or localised abdominal pain
abdominal distension or rebound tenderness.
SSx of dehydration and shock
Table 1 in NICE
Increasing severity of dehydration
No clinically detectable dehydration
Clinical dehydration
Clinical shock
Symptoms (remote and face-to-face assessments)
Appears well
Red flag Appears to be unwell or deteriorating
–
Alert and responsive
Red flag Altered responsiveness (for example, irritable, lethargic)
Decreased level of consciousness
Normal urine output
Decreased urine output
–
Skin colour unchanged
Skin colour unchanged
Pale or mottled skin
Warm extremities
Warm extremities
Cold extremities
Signs (face-to-face assessments)
Eyes not sunken
Red flag Sunken eyes
–
Moist mucous membranes (except after a drink)
Dry mucous membranes (except for ‘mouth breather’)
–
Normal heart rate
Red flag Tachycardia
Tachycardia
Normal breathing pattern
Red flag Tachypnoea
Tachypnoea
Normal peripheral pulses
Normal peripheral pulses
Weak peripheral pulses
Normal capillary refill time
Normal capillary refill time
Prolonged capillary refill time
Normal skin turgor
Red flag Reduced skin turgor
–
Normal blood pressure
Normal blood pressure
Hypotension (decompensated shock)
Table 2 in CPS
TABLE 2
Clinical assessment of degree of dehydration *
Mild (under 5%)
Moderate (5-10%)
Severe (over 10%)
Slightly decreased urine output
Slightly increased thirst
Slightly dry mucous membrane
Slightly elevated heart rate
Decreased urine output
Moderately increased thirst
Dry mucous membrane
Elevated heart rate
Decreased skin turgor
Sunken eyes
Sunken anterior fontanelle
Markedly decreased or absent urine output
Greatly increased thirst
Very dry mucous membrane
Greatly elevated heart rate
Decreased skin turgor
Very sunken eyes
Very sunken anterior fontanelles
Lethargy
Cold extremities
Hypotension
Coma
*Some of these signs may not be present
SSx of hypernatremic dehydration:
jittery
increased muscle tone
hyperreflexia
convulsions
drowsiness or coma
Labs:
No routine blood work
Serum sodium, potassium, urea, creatinine, glucose if IV fluids or signs of hypernatremia
Blood gas if shock suspected
Stool culture if:
blood and/or mucus in stool
immunocompromized
septicemia suspected
travel history
diarrhea not improved by day 7
uncertainty about diagnosis of gastroenteritis
Blood culture if antibiotic started
Watch for HUS in E. coli O157:H7
Treatment:
Figure 1 in CPS
No dehydration
continue breastfeeding and other milk feeds
encourage fluid intake
discourage the drinking of fruit juices and carbonated drinks, especially in those at increased risk of dehydration (see 1.2.1.2)
offer ORS solution as supplemental fluid to those at increased risk of dehydration (see 1.2.1.2).
Dehydration
ORT
Contraindications
IVF indicated (shock, deterioration, persistent vomiting despite NG tube)
paralytic ileus
monosaccharide malabsorption
use low-osmolarity ORS solution (240–250 mOsm/l)[5] (eg Pedialyte, Gastrolyte in Canada) for oral rehydration therapy
give 50 ml/kg for fluid deficit replacement over 4 hours as well as maintenance fluid
give the ORS solution frequently and in small amounts
consider supplementation with their usual fluids (including milk feeds or water, but not fruit juices or carbonated drinks) if they refuse to take sufficient quantities of ORS solution and do not have red flag symptoms or signs (see table 1)
plain water discouraged by CPS
consider giving the ORS solution via a nasogastric tube if they are unable to drink it or if they vomit persistently
monitor the response to oral rehydration therapy by regular clinical assessment
IVF
indications:
Shock
a child with red flag symptoms or signs (see table 1) shows clinical evidence of deterioration despite oral rehydration therapy
a child persistently vomits the ORS solution, given orally or via a nasogastric tube.
Initial bolus
20mL/kg of NS, then another one if still shocked
If no response to 2 boluses, consider other causes of shock. Consult PICU.
IVF therapy
Use NS or D5NS
If shocked: add 100mL/kg for fluid deficit to maintenance
If no shocked: add 50mL/kg for fluid deficit to maintenance
Early oral rehydration recommended. Switch to ORT as early as tolerated.
IVF in Hypernatremic dehydration
Urgent consult to specialist
Use NS or D5NS still
replace slowly over 48 hours, aiming at reducing serum sodium at a rate of less than 0.5mmol/L per hour
Maintenance after rehydration
Encourage breastfeeding, milk, and fluids
Consider giving 5mL/kg of ORS after each large watery stool
If dehydration recurs, restart ORT
Antibiotic indications:
suspected or confirmed septicaemia
extra-intestinal spread of bacterial infection
younger than 6 months with salmonella gastroenteritis
patient malnourished or immunocompromised with salmonella gastroenteritis
Clostridium difficile-associated pseudomembranous enterocolitis
giardiasis
dysenteric shigellosis
dysenteric amoebiasis
cholera
Do not use antidiarrhoeal medications.
Home care
Red flags for dehydration (seek medical attention):
appearing to get more unwell
changing responsiveness (for example, irritability, lethargy)
decreased urine output
pale or mottled skin
cold extremities
Also seek medical attention if length of illness beyond the usual course:
diarrhoea: 5–7 days and in most children it stops within 2 weeks
vomiting: 1 or 2 days and in most children it stops within 3 days
If not dehydrated:
to continue usual feeds, including breast or other milk feeds
to encourage the child to drink plenty of fluids
to discourage the drinking of fruit juices and carbonated drinks
plain water also discouraged by CPS
to offer ORS solution as supplemental fluid
with clinical dehydration:
that rehydration is usually possible with ORS solution
premixed ORS preferred due to risk of error (CPS)
to give 50 ml/kg of ORS solution for rehydration plus maintenance volume over a 4-hour period
to give this amount of ORS solution in small amounts, frequently
to seek advice if the child refuses to drink the ORS solution or vomits persistently
to continue breastfeeding as well as giving the ORS solution
not to give other oral fluids unless advised
not to give solid foods.
after rehydration:
drink plenty of their usual fluids, including milk feeds if these were stopped
avoid fruit juices and carbonated drinks until the diarrhoea has stopped
reintroduce the child’s usual diet
give 5 ml/kg ORS solution after each large watery stool if you consider that the child is at increased risk of dehydration
Disease prevention
washing hands with soap (liquid if possible) in warm running water and careful drying are the most important factors in preventing the spread of gastroenteritis
hands should be washed after going to the toilet (children) or changing nappies (parents/carers) and before preparing, serving or eating food
towels used by infected children should not be shared
children should not attend any school or other childcare facility while they have diarrhoea or vomiting caused by gastroenteritis
children should not go back to their school or other childcare facility until at least 48 hours after the last episode of diarrhoea or vomiting
children should not swim in swimming pools for 2 weeks after the last episode of diarrhoea.
The post Gastroenteritis in Children appeared first on Family Pharm Podcast.
19:43
Pediatric UTI
Episode in
Family Medicine & Pharmacy Podcast
AAP Guideline on Urinary Tract Infection: Clinical Practice Guideline for the Diagnosis and Management of the Initial UTI in Febrile Infants and Children 2 to 24 Months
http://pediatrics.aappublications.org/content/128/3/595.long
UK NICE guideline: Urinary tract infection in children
http://guidance.nice.org.uk/cg54
Summary:
For children with fever, UTI should be suspected.
For children at a very low risk for UTI, or greater than 3 years of age, a bag urine for urinalysis is an appropriate first step. If the urinalysis is suspicious for UTI, such as being positive for leukocyte esterase or nitrite, or if the children is not at a very low risk for UTI, then a catheterized urine sample should be obtained for urine culture prior to starting empiric antibiotics.
If the culture comes back negative, then antibiotics treatment covering UTI can be stopped.
Febrile UTI is presumed to be pyelonephritis, and should be investigated with Bladder and Renal Ultrasound. If the ultrasound shows structural abnormalities, or if the child has recurrent febrile UTIs, a VCUG should be considered, especially in younger children.
The post Pediatric UTI appeared first on Family Pharm Podcast.
12:26
A Fib 5: Antithrombotics
Episode in
Family Medicine & Pharmacy Podcast
Antiplatelets:
ASA
Clopidogrel
Anticoagulants:
Warfarin
Apixaban
Dabigatran
Rivaroxaban
Clotting Cascade:
Clotting Factor Song, by Emily Anne Nagler:
Twelve, eleven, nine, it’s clotting factor time
8 and 9 to 10a 5, that’s how we stay alive
Don’t forget to say: the tissue factor way
7 to 7a helps 10 go to 10a
Then 2 to thrombin, and 1 to fibrin
And that’s how it ends
The post A Fib 5: Antithrombotics appeared first on Family Pharm Podcast.
33:50
A Fib 4: Rhythm Control Medications
Episode in
Family Medicine & Pharmacy Podcast
Tina discusses the following rhythm control medications for atrial fibrillation:
Class 3 antiarrhythmics: blocks potassium channels and prolongs action potential duration
Amiodarone
Dronedarone
Sotalol
Class 1 antiarrhythmics: blocks sodium channels, which results in a slowed atrial conduction, lengthens atrial refractoriness, and suppresses automaticity
propafenone
flecainide
Indiana University’s P450 Drug Interaction Table: http://medicine.iupui.edu/clinpharm/ddis/clinical-table/
References:
CCS Guideline www.onlinecjc.ca/article/S0828-282X(12)00046-3/fulltext
UptoDate uptodate.com
e-CPS www.e-therapeutics.ca/
RXFiles www.rxfiles.ca
Lexicomp www.lexi.com
The post A Fib 4: Rhythm Control Medications appeared first on Family Pharm Podcast.
19:10
A Fib 3: Rate Control Medications
Episode in
Family Medicine & Pharmacy Podcast
Tina discusses the following rate control medications for atrial fibrillation:
Beta blockers
Bisoprolol
Metoprolol
Atenolol
Calcium channel blockers (non-dihydropyridines)
verapamil
diltiazem
Digoxin
References:
CCS Guideline www.onlinecjc.ca/article/S0828-282X(12)00046-3/fulltext
UptoDate uptodate.com
e-CPS www.e-therapeutics.ca/
RXFiles www.rxfiles.ca
Lexicomp www.lexi.com
The post A Fib 3: Rate Control Medications appeared first on Family Pharm Podcast.
21:49
A Fib 2: CCS 2012 Treatment Guidelines
Episode in
Family Medicine & Pharmacy Podcast
The CHADS2 and HAS-BLED predictive index are useful in assessing a patient’s thromboembolic risk and in predicting which antithrombotic therapy is most suitable; and that is either aspirin, clopidogrel, or anticoagulants. The 3 new anticoagulants may be simpler to use and may have less intracranial hemorrhage side effect than warfarin, there has been longer clinical experience with warfarin and an antidote is present if needed.
As for rate control and rhythm control, there is no significant difference in controlling survival and mortality between the two. Therapy is chosen based on patient’s symptoms and preference. Rate control medications include BB, non-dihydropyridine CCB, and digoxin. And rhythm control includes dronedarone, flecainide, sotalol, and amiodarone. We will go over details of these medications in the next episode.
Catheter ablation is mainly for symptom control. It may be first line for highly selected patients, is often considered 2nd line after multiple drug therapy, or for patients who failed on multiple antiarrhythmic therapy and maintenance of sinus rhythm is still desired.
Focused 2012 Update of the Canadian Cardiovascular Society Atrial Fibrillation Guidelines: Recommendations for Stroke Prevention and Rate/Rhythm Control
http://www.onlinecjc.ca/article/S0828-282X(12)00046-3/fulltext
The 2012 Canadian Cardiovascular Society Heart Failure Management Guidelines Update: Focus on Acute and Chronic Heart Failure
http://www.onlinecjc.ca/article/S0828-282X%2812%2901379-7/abstract
Canadian Cardiovascular Society Atrial Fibrillation Guidelines 2010: Catheter Ablation for Atrial Fibrillation/Atrial Flutter
http://www.onlinecjc.ca/article/S0828-282X(10)00012-7/fulltext
The post A Fib 2: CCS 2012 Treatment Guidelines appeared first on Family Pharm Podcast.
15:13
A Fib 1: Etiology and Diagnosis
Episode in
Family Medicine & Pharmacy Podcast
Canadian Cardiovascular Society Atrial Fibrillation Guidelines 2010: Etiology and Initial Investigations
http://www.onlinecjc.ca/article/S0828-282X(10)00016-4/fulltext
CHADS2 Score
http://www.mdcalc.com/chads2-score-for-atrial-fibrillation-stroke-risk/
HAS-BLED Score
http://www.mdcalc.com/has-bled-score-for-major-bleeding-risk/
Mayo Clinic on A Fib
http://www.mayoclinic.org/diseases-conditions/atrial-fibrillation/basics/definition/con-20027014
The post A Fib 1: Etiology and Diagnosis appeared first on Family Pharm Podcast.
17:53
CHF 2: medications
Episode in
Family Medicine & Pharmacy Podcast
Tina revisits ACEI, ARB, BB, and Thiazides, which were covered previously with the hypertension episodes, and introduces a few new medications as well:
Mineralocorticoid Receptor Antagonists: spironolactone and eplerenone
Loop diuretic: furosemide
Digoxin
Vasodilators: hydralazine and isosorbite dinitrate
For a quick summary of the CCS 2013 recommendations:
ACE inhibitors:
all asymptomatic patients with an EF < 35%
all symptomatic HF patients and EF < 40%
ARB:
if intolerant to ACEI
add to ACEI if intolerant or contraindicated for BB
add to ACEI and BB if NYHA class II-IV HF and EF ? 40% deemed at increased risk of HF events
BB:
all HF patients with an EF ? 40%
initiated at a low dose and titrated to the target dose or maximal tolerated dose
MRA:
patients > 55 years with mild to moderate HF during standard HF treatments with EF ? 30% (or ? 35% if QRS duration > 130 ms) and recent (6 months) hospitalization for CV disease or
with elevated BNP or NT-proBNP levels
after an MI with EF ? 30% and HF or
EF ? 30% alone in the presence of diabetes
EF < 30% and severe chronic HF (NYHA IIIB-IV) despite optimization of other recommended treatments
Diuretics:
for congestive symptoms
When acute congestion is cleared, the lowest dose should be used that is compatible with stable signs and symptoms
persistent volume overload despite optimal medical therapy and increases in loop diuretics, cautious addition of a second diuretic (a thiazide or low dose metolazone) may be considered as long as it is possible to closely monitor morning weight, renal function, and serum potassium
Digoxin:
patients in sinus rhythm who continue to have moderate to severe symptoms, despite optimized HF therapy
patients with chronic atrial fibrillation (AF) and poor control of ventricular rate
Isosorbide dinitrate and hydralazine:
black Canadians with HF-REF
non-black HF patients unable to tolerate an ACE inhibitor or ARB
Drug information from:
Drug monographs
CPS: http://www.e-therapeutics.ca/
Therapeutic Choices: http://www.e-therapeutics.ca/
Rx Files: http://www.rxfiles.ca/rxfiles/modules/druginfoindex/druginfo.aspx
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21:09
CHF 1: CCS 2012 Guideline
Episode in
Family Medicine & Pharmacy Podcast
We turned our attention to chronic congestive heart failure (CHF) and reviewed “The 2012 Canadian Cardiovascular Society Heart Failure Management Guidelines Update“.
National Institute of Health provided a great summary on CHF for patients and the public: http://www.nhlbi.nih.gov/health/health-topics/topics/hf/
For a basic anatomy review of the circulatory system:
Anatomy of the heart. Source: Wikimedia.
For another diagram showing the heart in relation to the body, click here.
And an over-simplification of the pathophysiology of left vs right heart failure is that when the left ventricle fails, not enough oxygenated blood gets pumps to the body to meet its demand. Instead, blood gets backed up into the lungs and cause fluid buildup in the lungs. This pressure can further back up into the right heart, such that the right ventricle and right atrium cannot accommodate a normal amount of venous return, and fluid can accumulate in the body to cause edema. Wikipedia strikes a good balance of depth and readability on this topic: http://en.wikipedia.org/wiki/Heart_failure
The CCS guideline suggests the following investigations for CHF:
CXR,
echocardiography,
BNP,
labs (CBC, electrolytes, creatinine, urinalysis, glucose, thyroid function), and
further testing (nuclear imaging, catheterization, stress test, MRI, CT, endomyocardial biopsy) if appropriate.
The CCS guideline on treatment of chronic CHF:
ACE inhibitors for:
all symptomatic HF patients and EF < 40%.
all patients with an EF < 35%
Angiotensin receptor blocker:
if patient intolerant to ACEI
add to ACEI if intolerant or contraindicated for BB
add to ACEI and BB if patient has NYHA class II-IV HF and EF ? 40% deemed at increased risk of HF events
Beta blocker:
all HF patients with an EF ? 40%
initiated at a low dose and titrated to the target dose or maximal tolerated dose
Mineralocorticoid receptor antagonist:
EF <30% and one of the following:
past MI and HF
diabetes
severe chronic HF (NYHA IIIB-IV) despite optimized treatment
age >55 with HF symptoms on treatment and recent hospitalization for CV disease in the past 6 months (or if QRS duration > 130ms and EF <35%)
with elevated BNP or NT-proBNP levels
Diuretics:
loop diuretic, such as furosemide, for most patients with HF and congestive symptoms. When acute congestion is cleared, the lowest dose should be used that is compatible with stable signs and symptoms
persistent volume overload despite optimal medical therapy and increases in loop diuretics, cautious addition of a second diuretic (a thiazide or low dose metolazone) may be considered as long as it is possible to closely monitor morning weight, renal function, and serum potassium
Digoxin:
patients in sinus rhythm who continue to have moderate to severe symptoms, despite optimized HF therapy
patients with chronic atrial fibrillation (AF) and poor control of ventricular rate
Isosorbide dinitrate and hydralazine:
black Canadians with HF-REF
non-black HF patients unable to tolerate an ACE inhbitor or ARB
The post CHF 1: CCS 2012 Guideline appeared first on Family Pharm Podcast.
20:55
Diabetes 3: Insulin and Official Launch
Episode in
Family Medicine & Pharmacy Podcast
Classes of insulin and different treatment regimens are discussed in the third episode of a 3-part series on diabetes. This episode also marks the conclusion of our coverage of the “Big Three” of modern medicine (hypertension, dyslipidemia, and diabetes), and with it, we make an official announcement of the launch of the Family Pharm Podcast to the world (aka Facebook)!
Class
Drug
Onset
Peak
Duration
Very Rapid-acting Insulin Analogues
insulin aspart
(NovoRapid)
10–15 min
60–90 min
4–5 h
insulin glulisine
(Apidra)
insulin lispro
(Humalog)
Rapid-acting Insulin
insulin regular
(Humulin R, Novolin ge Toronto)
30–60 min
2–4 h
5–8 h
Intermediate-acting Insulin
insulin NPH
(Humulin N, Novolin ge NPH)
1–2 h
5–8 h
14–18 h
Long-acting Insulin Analogues
insulin detemir
(Levemir)
1.5 h
Flat, no discernible peak
24 h
insulin glargine
(Lantus)
Mixed (regular/NPH) Human Insulin
insulin regular/insulin NPH
Humulin 30/70,
Novolin ge 30/70, 40/60, 50/50
Combination of individual components
Mixed Insulin Analogues
insulin lispro/lispro protamine
Humalog Mix25, Humalog Mix50
10–15 min
Not available
Not available
Mixed Insulin Analogues
insulin aspart/aspart protamine
NovoMix 30
10–15 min
60–90 min
15–18 h
Classes of insulin preparations. Adapted from Therapeutic Choices 6th edition.
CDA guideline on insulin for Type 1 diabetes, including description of basal-bolus regimen by carb counting:
http://guidelines.diabetes.ca/Browse/Chapter12
Examples of insulin regimens from CDA:
http://guidelines.diabetes.ca/Browse/Appendices/Appendix3
Self monitoring:
http://guidelines.diabetes.ca/executivesummary/ch9
The post Diabetes 3: Insulin and Official Launch appeared first on Family Pharm Podcast.
22:41
Diabetes 2: antihyperglycemics
Episode in
Family Medicine & Pharmacy Podcast
We reviewed the CDA 2013 guidelines on antihyperglycemic therapy for type 2 diabetes (http://guidelines.diabetes.ca/executivesummary/ch13), and explored the pharmacological properties of each of the major classes:
Biguanides: Metformin
Sulfonylureas: chlorpropamide, gliclazide, glimepiride, glyburide, and tolbutamide
Thiazolidinediones: pioglitazone and rosiglitazone
Meglitinides: Nateglinide and repaglinide
Alpha-glucosidase inhibitors: Acarbose
Dipeptidyl Peptidase-4 inhibitors (DPP4 inhibitors): Saxagliptin and sitagliptin
Glucagon Like Peptide-1 Analogues (GLP-1 analogues): Liraglutide and Exenatide
Drug information:
Drug monographs
CPS: http://www.e-therapeutics.ca/
Therapeutic Choices: http://www.e-therapeutics.ca/
Rx Files: http://www.rxfiles.ca/rxfiles/modules/druginfoindex/druginfo.aspx
The post Diabetes 2: antihyperglycemics appeared first on Family Pharm Podcast.
23:08
Diabetes 1: CDA 2013 Guideline
Episode in
Family Medicine & Pharmacy Podcast
To round up the “Big Three”, we turned out attention on diabetes. We reviewed the CDA guidelines on diabetes management and summarized the most relevant points that we think all family doctors and pharmacists would find interesting.
http://guidelines.diabetes.ca/
The CDA also prepared many apps and calculators that help HCPs make clinical decisions. As well, there are many other clinical practice guidelines on many different aspects of the care of diabetes that we cannot cover in this podcast. We recommend listeners to visit the CDA website to get a fuller picture than our synopsis here.
The post Diabetes 1: CDA 2013 Guideline appeared first on Family Pharm Podcast.
18:31
Dyslipidemia 4: EBM Special
Episode in
Family Medicine & Pharmacy Podcast
We explore pieces of important evidence that offer a contrasting view on lipid control from the national guidelines.
We are also introducing a new EBM resource available to CMA members: InfoPOEMs, which highlights clinical studies that the editorial team finds relevant. http://www.cma.ca/clinicalresources/infopoems
Treatment group
Tools for Practice 2013: “Is Diabetes a Coronary Heart Disease Equivalent?” http://www.acfp.ca/Portals/0/docs/TFP/20131021_093004.pdf
“Though diabetes does confer an increased risk of CV events, it is not automatically equivalent to having experienced a myocardial infarction (MI) (and thus does not always warrant aggressive pharmacotherapy).
CV risk should be predicted, and therapy guided, by taking into account individual risk factors.”
InfoPOEM: “Limited data to guide lipid lowering in octogenarians” http://www.ncbi.nlm.nih.gov/pubmed/20952373
either extremes of cholesterol levels (low or high) are associated with increased mortality in patients >80 years old
Non statin lipid medications
Tools for Practice 2010: “Ezetimibe: Lowers LDL cholesterol but what else?” http://www.acfp.ca/Portals/0/docs/TFP/20111028_105411.pdf
“Eight years after being licensed by the FDA, there is still no evidence that ezetimibe reduces cardiovascular outcomes. It may be worse than niacin and there is concern about a potential increased cancer mortality risk.”
Tools for Practice 2012: “Niacin added to statins for cardiovascular disease? 1 + 1 = 1” http://www.acfp.ca/Portals/0/docs/TFP/20120502_095745.pdf
“In patients with cardiovascular disease already on statin therapy, adding niacin does not improve cardiovascular events. Among lipid treatments, only statin monotherapy has strong evidence for CVD prevention (regardless of lipid levels).”
Tools for Practice 2013: “Fibrates: Statin’s Trusty Sidekick or Lackluster Fallback?” http://www.acfp.ca/Portals/0/docs/TFP/20131007_090323.pdf
“When used alone, fibrates reduce non-fatal coronary events, but have no effect on mortality or other CV events, including stroke. Current evidence suggests fibrates provide no advantage when added to statin therapy.”
InfoPOEM: “Statins but not fibrates associated with lower risk of pancreatitis” http://www.ncbi.nlm.nih.gov/pubmed/22910758
statins significantly reduced risk of pancreatitis, where as fibrates did not
Statin dosing and efficacy
Cochrane 2014: “Statins for the primary prevention of cardiovascular disease” http://summaries.cochrane.org/CD004816/statins-for-the-primary-prevention-of-cardiovascular-disease
“All-cause mortality was reduced by statins (OR 0.86, 95% CI 0.79 to 0.94); as was combined fatal and non-fatal CVD RR 0.75 (95% CI 0.70 to 0.81), combined fatal and non-fatal CHD events RR 0.73 (95% CI 0.67 to 0.80) and combined fatal and non-fatal stroke (RR 0.78, 95% CI 0.68 to 0.89). Reduction of revascularisation rates (RR 0.62, 95% CI 0.54 to 0.72) was also seen. [...] Evidence available to date showed that primary prevention with statins is likely to be cost-effective and may improve patient quality of life. Recent findings from the Cholesterol Treatment Trialists study using individual patient data meta-analysis indicate that these benefits are similar in people at lower (< 1% per year) risk of a major cardiovascular event.”
InfoPOEM: “Statins of modest benefit for low- to moderate-risk persons (NNT ~ 80)” http://www.ncbi.nlm.nih.gov/pubmed/21989464
for a patient group with a mean 10-year risk of cardiovascular death or MI around 6.2%, the NNT for all-cause mortality was 80, for any MI was 72, and for any stroke was 97 over 10 years of statin treatment
InfoPOEM: “Statins for hyperlipidemia reduce all-cause mortality” http://www.ncbi.nlm.nih.gov/pubmed/20934984
for patients with hyperlipidemia (LDL 180 mg/dL or 4.6mmol/L), and a mean follow up of 2.7 years, number needed to treat [NNT] to reduce 1 death = 67
Tools for Practice 2012: “How does high dose statin compare to low dose in people with heart disease?” http://www.acfp.ca/Portals/0/docs/TFP/20120522_090852.pdf
“In patients with coronary heart disease, using high dose statins (compared to low-moderate dose) prevents one CHD event for every 91 patients but results in one in 47 patients discontinuing therapy due to adverse events.
However, low-moderate dose statin (compared to placebo) provides 2-3 times greater benefit than increasing to high dose statin. Therefore, getting and keeping patients on any statin is key, with dose adjusted up to tolerable levels”
Statin side effects
InfoPOEM: “Does statins cause cognitive decline?” http://www.ncbi.nlm.nih.gov/pubmed/24000778
No. Statins are not associated with cognitive decline. Actually, in patients without baseline cognitive impairment, statin use is associated with slower cognitive decline.
Tools for Practice 2013: “Statin-Induced Diabetes: Too Sweet a Deal?” http://www.acfp.ca/Portals/0/docs/TFP/20130527_014005.pdf
“Statins modestly increase blood glucose, which leads to 1 in 250 or so patients crossing the “diabetic threshold” over 5 years. Pre-existing elevated sugars, other diabetes risk factors or higher doses may slightly increase the risk. This should not change statin prescribing as they reduce cardiovascular events and all-cause mortality in appropriate patients.”
Additional tests
InfoPOEM: “CRP of little value for risk stratification” http://www.ncbi.nlm.nih.gov/pubmed/23034020
“In patients with an intermediate 10-year risk of a cardiovascular event (10% – 20%), you would have to screen more than 440 with a C-reactive protein (CRP) test to prevent 1 [cardiovascular] event. This test is quite expensive: in the neighborhood of $100 or more at many laboratories (LOE = 2a)“
(Originally published on February 1, 2014)
The post Dyslipidemia 4: EBM Special appeared first on Family Pharm Podcast.
13:40
Dyslipidemia 3: AHA 2013 Guideline
Episode in
Family Medicine & Pharmacy Podcast
We return to the topic of dyslipidemia and examined the: “2013 ACC/AHA Guideline on the Treatment of Blood Cholesterol to Reduce Atherosclerotic Cardiovascular Risk in Adults” http://circ.ahajournals.org/content/early/2013/11/11/01.cir.0000437738.63853.7a
Previous episodes on statins can be found here.
Major differences between AHA 2013 guideline and CCS 2012 guideline:
CCS 2012
AHA 2013
Treatment Threshold
LR (FRS<10%): consider lifestyle only
IR (FRS 10-19%), if LDL <3.5mmol/L: consider lifestyle only
Optional alternate target and secondary tests reasonable
HR (FRS >20%), history of CVD, DM aged >40: statins
LDL >5 mmol/L: statins
CVD: statins
LDL > 4.9 mmol/L: statins
DM aged 40-75: statins
10-year risk >7.5%: statins
Treatment Target
LDL >50% reduction
LDL < 2mmol/L for IR and HR groups
No target
Fixed dose statins based on initial risk assessment
Pooled Cohort Equations to estimate 10-year CVD risk: http://www.cardiosource.org/science-and-quality/practice-guidelines-and-quality-standards/2013-prevention-guideline-tools.aspx
Dr. McCormack’s discussion on patient centered EBM on KevinMD: http://www.kevinmd.com/blog/2013/12/cholesterol-guidelines-emphasize-patient-preference.html
(Originally published on January 25, 2014)
The post Dyslipidemia 3: AHA 2013 Guideline appeared first on Family Pharm Podcast.
22:13
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