Hypertension is a very common pathology, and its clinical treatment largely relies on different drugs. Some of these drugs exhibit specific protective functions in addition to those resulting from blood pressure reduction. In this work, we study the impact of commonly used anti-hypertensive drugs (RAAS, β and calcium channel blockers) on myocardial oxygen supply–consumption balance, which plays a crucial role in type 2 myocardial infarction. To this aim, 42 wash-out hypertensive patients were selected, a number of measured data were used to set a validated multi-scale cardiovascular model to subject-specific conditions, and the administration of different drugs was suitably simulated. Our results ascribe the well-known major cardioprotective efficiency of β blockers compared to other drugs to a positive change of myocardial oxygen balance due to the concomitant: (1) reduction in aortic systolic, diastolic and pulse pressures, (2) decrease in left ventricular work, diastolic cavity pressure and oxygen consumption, (3) increase in coronary flow and (4) ejection efficiency improvement. RAAS blockers share several positive outcomes with β blockers, although to a reduced extent. In contrast, calcium channel blockers seem to induce some potentially negative effects on the myocardial oxygen balance.

In silico analysis of the anti-hypertensive drugs impact on myocardial oxygen balance

Leone D.;Milan A.;
2017-01-01

Abstract

Hypertension is a very common pathology, and its clinical treatment largely relies on different drugs. Some of these drugs exhibit specific protective functions in addition to those resulting from blood pressure reduction. In this work, we study the impact of commonly used anti-hypertensive drugs (RAAS, β and calcium channel blockers) on myocardial oxygen supply–consumption balance, which plays a crucial role in type 2 myocardial infarction. To this aim, 42 wash-out hypertensive patients were selected, a number of measured data were used to set a validated multi-scale cardiovascular model to subject-specific conditions, and the administration of different drugs was suitably simulated. Our results ascribe the well-known major cardioprotective efficiency of β blockers compared to other drugs to a positive change of myocardial oxygen balance due to the concomitant: (1) reduction in aortic systolic, diastolic and pulse pressures, (2) decrease in left ventricular work, diastolic cavity pressure and oxygen consumption, (3) increase in coronary flow and (4) ejection efficiency improvement. RAAS blockers share several positive outcomes with β blockers, although to a reduced extent. In contrast, calcium channel blockers seem to induce some potentially negative effects on the myocardial oxygen balance.
2017
16
3
1035
1047
http://www.springeronline.com/sgw/cda/frontpage/0,11855,1-40109-70-1167715-0,00.html
Anti-hypertensive drugs; Aortic pressure; Calcium channel blockers; Coronary circulation; Hypertension; Myocardial oxygen balance; RAAS blockers; β blockers; Antihypertensive Agents; Blood Pressure; Calcium Channel Blockers; Computer Simulation; Humans; Hypertension; Oxygen; Oxygen Consumption; Models, Cardiovascular
Guala A.; Leone D.; Milan A.; Ridolfi L.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2318/1728401
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