Friday, 2 December 2022

ACE Inhibitors - dosage & Practice points

ACE INHIBITORS: Ref: ESC guidelines.

Drug Dosage Renal
elimination %
Dosage in Renal failure
CrCl 10 - 30 ml/min
1. Enalapril 2.5 - 20 mg bid 88 % 2.5 - 20mg bid
2. Ramipril 2.5 - 10 mg daily 85% 1.25 - 5 mg daily
3. Benazepril 2.5 - 20 mg bid 85% 2.5 - 10 mg bid
4. Captopril 25 - 100 mg tid 95% 6.25 - 12.5 mg tid
5. Zofenopril 7.5 - 30 mg bid 60 % 7.5 - 30 mg bid
6. Cilazapril 1.25 - 5 mg daily 80% 0.5 - 2.5 daily
7. Lisinopril 2.5 - 10 daily 70% 2.5 - 5 daily
8. Perindopril 4 - 8 mg daily 75% 2 mg daily
9. Quinapril 10 - 40 mg daily 75% 2.5 - 5 mg daily
10. Spirapril 3 - 6 mg daily 50% 3 - 6 mg daily
11. Trandolapril 1 - 4 mg daily 15% 0.5m- 1 mg daily
12. Fosinopril 10 - 40 mg daily 50% 10 - 40 mg daily


Note:

1.All are prodrugs except Captopril, Spirapril, Trandolapril, Cilazapril.
2.Significant Hepatic elimination: Zofenopril, Spirapril, Trandolapril, Fosinopril.

Practical Points:

1.Double dose at 2 weeks intervals
2.Faster titration in hypertensive patients, mild heart failure, asymptomatic LV dysfunction, In hospitalised patients 

RENAL FAILURE patients:

1. Up to 30 % rise in creatinine is tolerable during initiation 
2. Caution if Creatinine > 2.5 mg/dl
3. Contraindicated(STOP) if creatinine > 3 mg/dl, or creatinine increases by 50%, or K+ > 6 mmol/L.
4. Dialysis patients can be treated with ACEI, provided hyperkalemia can be prevented by low K+ diet & avoiding K+ sparing diuretics.

Switch over between drugs:

1. Stop ACE I and start ARBs on following day at an equivalent dose
2. Stop ACE I and start ARNi after 36 hours.
3. Combinations of ACEI with ARB,ARNI,direct renin inhibitor is Contraindicated.