OSEP Flashcards
Non-selective COX inhibitor DOC for headache, pain, and fever
Paracetamol
Ibuprofen
MOA of non-selective COX inhibitors
blocks COX-1 and COX-2 enzymes responsible for the formation of prostaglandins
Selective COX-2 inhibitor DOC for headache, pain, and fever
Celecoxib
AE of paracetamol
hepatotoxicity
AE of ibuprofen
GI ulcer
AE of celecoxib
risk of MI/stroke/thrombosis/atherogenesis
Dosage of paracetamol for headache, pain, fever
500 mg every 4-6 hrs as needed
Dosage of ibuprofen for headache, pain, fever
200 mg every 4-6 hrs as needed
Dosage of celecoxib for headache, pain, fever
200 mg (twice a day) 400 mg (OD) as needed
DOC for allergy
loratadine
drug group of loratadine
2nd gen H1-receptor blocker
MOA of loratadine
reversible competitive binding to H1 receptors
most common AE of loratadine
anti-muscarinic effect
dosage of loratadine for adults
10 mg tablet OD at bedtime
dosage of loratadine for children
5 mg/ml syrup 1 tsp OD
What are antimuscarinic effects
dry as a bone hot as a hare red as a beet mad as a hatter blind as a bat
Normal BP
<120/<80
Elevated BP
120-129 / <80
Stage 1 hypertension
130-139 / 80-89
Stage 2 hypertension
140-160 / 90-99
or >160 or >100
Drug groups for the pharmacological management of hypertension
ACE Inhibitors
ARBs
CCB
Thiazide diuretic
ACEI DOC for hypertension
Enalapril
MOA of enalapril
Blocks synthesis of angiotensin II to promote sodium and water retention and breakdown of bradykinin into inactive peptide
Most common AE of enalapril
Cough
Effect of enalapril on HR
None
Dosage of enalapril
10 mg tablet OD at bedtime for 6 weeks or 30 days for maintenance
ARB DOC for hpn
Losartan
MOA for losartan
Blocks angiotensin II type I receptor
Effect of angiotensin II in the kidney
Na reabsorption and aldosterone release
Effect of angiotensin II to the vasculature
Vasoconstriction
Effect of angiotensin II block to CNS
Norepinephrine release
Effect of angiotensin II blockage to the heart
Remodelling of the heart - hypertrophy
Most common AE of losartan
Hyperkalemia
Effect of losartan on the bradykinin system
None
Dosage of losartan
100 mg tablet OD as maintenance
CCB DOC for hpn
Amlodipine
MOA of amlodipine
Reduce Ca++ influx in cardiac myocytes and vascular smooth muscle by blocking the voltage-gated Ca++ channels in the cell membrane
Most common AE of amlodipine
Edema
CI of amlodipine
Unstable angina
Dosage of amlodipine
5 mg tablet OD as maintenance
Why is amlodipine ideal for maintenance?
Because it has the longest half-life
Thiazide diuretic DOC for hpn
Hydrochlorthiazide
MOA of hydrochlorthiazide
Blocks sodium chloride channel located on the distal convoluted tubule
Most common AEs of thiazides (5H’s)
Hypokalemic metabolic acidosis Hyponatremia Hyperuricemia Hyperglycemia Hyperlipidemia
Dosage of hydrochlorthiazide
25 mg OD as maintenance
Hydrochlorthiazides are usually combined with
ACEi and ARBs
Drug groups for GERD
Proton pump inhibitor
H2 receptor blocker
PPI DOC for GERD
Omeprazole
MOA of omeprazole
Irreversibly inhibits H/K-ATPase
Most common AE of omeprazole
Hip fracture risk
Dosage of omeprazole
20 mg or 40 mg OD before breakfast
H2 receptor blocker DOC for GERD
Ranitidine
MOA of ranitidine
Competitive inhibition at H2 receptor
Dosage of ranitidine
150 mg tablet BID or 300 mg tablet OD at night
Drug group for reliever medications for asthma
Short-acting beta-2 agonist
Short-acting beta-2 agonist DOC for asthma
Salbutamol