In which condition is a heel stick preferred over a venipuncture?

A heel stick is preferred over a venipuncture when collecting blood from neonates or infants primarily due to safety and practicality considerations. Infants, especially those under the age of 6 months, have very small veins that are difficult to locate and puncture safely, and a heel stick minimizes the risk of complications associated with venipuncture in such young patients. The heel stick method utilizes the heel's soft tissue, which is less painful and reduces the risk of injury to vital structures compared to accessing the tiny veins in the arms or hands.

Additionally, using a heel stick allows for easier and more efficient blood collection in a non-threatening manner for infants, who may be more sensitive to stress or discomfort. It is crucial to perform blood collection techniques that prioritize the patient's comfort and well-being, particularly in vulnerable populations such as neonates.

The other conditions listed do not present suitable circumstances for a heel stick. Adult blood donation typically requires a venipuncture to access larger veins for larger blood volumes. Routine blood tests for seniors also call for established venipuncture sites for accuracy and reliability. Fasting blood glucose testing usually involves venipuncture to provide a definitive reading, as capillary blood can be influenced by various factors.