In which scenario is a heel stick preferred?

A heel stick is preferred for collecting blood samples specifically from infants or neonates due to their small size and the need to minimize discomfort while obtaining blood. This method allows for sufficient blood volume to be obtained from such delicate patients without the risks associated with larger needles or venipuncture, which can be more traumatic and technically challenging in this population.

The anatomy of infants makes heel sticks advantageous, as the heel is well vascularized and provides an adequate site for capillary blood collection. Furthermore, this technique reduces the likelihood of complications associated with more invasive procedures, promoting a more positive experience for both the infant and the caregivers involved.

In contrast, other scenarios listed, such as collecting samples from adults scheduled for surgery, performing routine health screenings, or in emergency trauma situations, would generally require alternative methods of blood collection that are more appropriate for the age, size, and clinical condition of the patient. For instance, adults typically undergo venipuncture, which allows for larger volumes of blood and is more suitable for their anatomical considerations.