Final answer:
Heparin should be administered before bypass to prevent blood clot formation. The usual onset of action is 3 to 5 minutes, and the dose varies based on body weight. Monitoring is done using the activated clotting time (ACT) to ensure appropriate anticoagulation.
Step-by-step explanation:
When administering heparin with bypass, the timing, onset, dose, and monitoring technique are crucial. Heparin is typically administered before bypass to prevent the formation of blood clots during the procedure. The usual onset of action for heparin is around 3 to 5 minutes after administration. The dose of heparin varies depending on the patient's weight, but a common starting dose is 300-400 units per kilogram of body weight.
The monitoring technique for heparin during bypass is the activated clotting time (ACT). ACT measures the time it takes for blood to clot and is used to determine the effectiveness of heparin. The target ACT range during bypass is usually between 400-480 seconds. Regular monitoring of the ACT is necessary to adjust the heparin dose and ensure appropriate anticoagulation.
Heparin should be administered before bypass to prevent blood clot formation. The usual onset of action is 3 to 5 minutes, and the dose varies based on body weight. Monitoring is done using the activated clotting time (ACT) to ensure appropriate anticoagulation.