diastolic runoff
The continuous flow of blood from the aorta to the coronary circulation during diastole due to aortic regurgitation.
Full Definition
Diastolic runoff refers to the pathological backward flow of blood from the aorta into the left ventricle during diastole, typically due to aortic insufficiency. This phenomenon creates a characteristic wide pulse pressure and can compromise coronary perfusion. In cardiovascular anesthesiology, understanding diastolic runoff is crucial for hemodynamic management and timing of interventions. The degree of runoff influences anesthetic planning, particularly regarding blood pressure targets and the choice of vasoactive medications.
Usage
Usage note: Often confused with other diastolic phenomena; ensure context clearly indicates aortic regurgitation.
In Context
- "Severe diastolic runoff was evident on the arterial waveform, prompting immediate surgical intervention." — Intraoperative anesthesia record
- "The patient's diastolic runoff complicated blood pressure management during the procedure." — Case report documentation