Intra-Aortic Balloon PumP (IABP) とは？
The concept of counter pulsation in the management of left-ventricular failure was first described by Kontrowitz and Kontrowitz more than 60 years ago .
. Surgery . 1953 Oct;34(4):678-87. Experimental Augmentation of Coronary Flow by Retardation of the Arterial Pressure Pulse A KANTROWITZ
A few years later, in 1962, Moulopoulus et al.  introduced the counter pulsation via device inserted into the aorta. Since then the IntraAortic Balloon Pump (IABP) has become a valuable minimally invasive method of augmenting left-ventricular function.
. Am Heart J . 1962 May;63:669-75. doi: 10.1016/0002-8703(62)90012-1. Diastolic Balloon Pumping (With Carbon Dioxide) in the Aorta–A Mechanical Assistance to the Failing Circulation S D MOULOPOULOS, S TOPAZ, W J KOLFF
参考元：Intra-Aortic Balloon Counterpulsation in Low Cardiac Output Noncardiogenic Shock – Case Report and Review. Case Report Published: 15 Jun, 2020. Annals of Clinical Case Reports http://www.anncaserep.com/pdfs_folder/accr-v5-id1851.pdf
With the IABP in place in the thoracic aorta, inflation of the balloon in diastole and active deflation in systole induces higher perfusion pressures in the brain and the coronary arteries in diastole and unloads the diseased heart by reducing left ventricular afterload in systole.
参考元：Intra-aortic Balloon Counterpulsation in Cardiogenic Shock K. Werdan, M. Russ, and M. Buerkeのイントロダクション
K. Bendjelid, Cardiogenic shock and systemic diastolic pressure: A subtle association, Journal of Critical Care(2019), https://doi.org/10.1016/ j.jcrc.2019.09.003 (PDF)