AP BIOLOGY

Detailed explanation-1: -The patient’s vital signs (temperature, pulse, respirations, and blood pressure) should be recorded shortly before transfusion and after the first 15 minutes, and compared to baseline values. Some patients’ history or clinical conditions may indicate a need for more frequent monitoring.

Detailed explanation-2: -In haemodynamically stable post-operative surgical patients, the trigger for transfusion is Hb ≤ 8 g/dl or presence of symptoms of inadequate oxygen delivery (chest pain of cardiac origin, orthostatic hypotension or tachycardia unresponsive to fluid resuscitation, or congestive heart failure).