Final answer:
Warm ischemic time for cardiac tissue is the time from heart stoppage to cooling the tissue for transport, which is critical for transplant viability. option c.
Step-by-step explanation:
The warm ischemic time for cardiac tissue is defined as the time interval from asystole to subjecting cardiac tissue to cold rinse (or transport) solution at retrieval. Answer (c) is the correct definition: it is the time interval from asystole to subjecting cardiac tissue to cold rinse (or transport) solution at retrieval.
This period is critical as it can influence the viability of the cardiac tissue for transplantation. Cold rinse helps to preserve the cardiac tissue through controlled hypothermia, similar to measures taken during open-heart surgery to reduce the metabolic needs of the heart and decrease the risk of damage.
The correct definition for warm ischemic time for cardiac tissue is **c. The time interval from asystole to subjecting cardiac tissue to cold rinse (or transport) solution at retrieval.** Warm ischemic time refers to the duration during which the organ or tissue is without blood flow and oxygen before cooling measures are initiated.
In the case of cardiac tissue, it is the time from asystole (cessation of heart activity) until the tissue is exposed to a cold rinse or transport solution during retrieval. Minimizing warm ischemic time is crucial to preserving tissue viability for transplantation and improving the success of organ transplants.