Monday, October 5, 2020

effects of IABP

 Q: Intra Aortic Balloon Pump (IABP) tends to _____________ the systolic blood pressure? (select one)

A) increase

B) decrease

Answer: B

Inflation of IABP during the heart's diastole displaces the blood to the proximal aorta. And, aortic volume is reduced during systole due to a vacuum effect by rapid balloon deflation (decrease afterload). These two actions result in a decrease in systolic blood pressure,  an increase in diastolic blood pressure, and an increase in mean arterial pressure (MAP).

 All these changes depend on arterial elastance. The higher the arterial elastance, the better the hemodynamic improvement response.



1. Marchionni N, Fumagalli S, Baldereschi G, et al. Effective arterial elastance and the hemodynamic effects of intraaortic balloon counterpulsation in patients with coronary heart disease. Am Heart J 1998; 135:855.

2. Fried JA, Nair A, Takeda K, Clerkin K, Topkara VK, Masoumi A, Yuzefpolskaya M, Takayama H, Naka Y, Burkhoff D, Kirtane A, Karmpaliotis D, Moses J, Colombo PC, Garan AR. Clinical and hemodynamic effects of intra-aortic balloon pump therapy in chronic heart failure patients with cardiogenic shock. J Heart Lung Transplant. 2018 Nov;37(11):1313-1321. doi: 10.1016/j.healun.2018.03.011. Epub 2018 Mar 20. PMID: 29678608; PMCID: PMC6148415.

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