Cardiovascular model for studying circulatory impairment under acceleration

A model of the cardiovascular system developed for use in the study of cardiovascular responses to acceleration of the type encountered by pilots of high-performance aircraft is described. The model includes simulations of the heart; arterial, venous, and peripheral circulations; and physiological compensatory mechanisms important to acceleration studies. It can predict blood pressure and flow in any part of the circulation under conditions of G/sub z/ stress and with the application of G-protection techniques. Predictions of the model have been used to analyze the cause of loss of pilot function under G forces, and to design an improved anti-G suit.<>