Читать книгу Manual of Equine Anesthesia and Analgesia - Группа авторов - Страница 97

 Although cardiac output is a more precise measure of cardiovascular function, BP is easier to measure and is often used for evaluation of the cardiovascular system. (See Chapter 19.)

 BP = Cardiac output (Q) × Systemic vascular resistance (SVR) Note: SVR is often referred to as total peripheral resistance (TPR).

 Pulmonary vascular resistance (PVR)

 Arterial BPs are recorded as systolic, diastolic and mean values.Systolic pressure = Peak pressure.Diastolic pressure = Nadir pressure.Mean pressure = 1/3 (Systolic pressure − Diastolic pressure) + Diastolic pressure.

 Reference values in conscious adult horses are:Systolic pressure of 147–169 mmHg.Diastolic pressure of 92–110 mmHg,Mean pressure of 115–131 mmHg.

 These values should be maintained at not lower than a 40–50% decrease in the anesthetized horse.