NHA Certified Clinical Medical Assistant (CCMA)Clinical Patient CareMedium
A medical assistant is preparing to perform a venipuncture on a patient. The patient has visible petechiae on their arms. Which of the following actions should the medical assistant take?
- APerform the venipuncture on a different site, such as the foot or ankle.
- BProceed with the venipuncture as planned, as petechiae do not affect blood draw.
- CApply a tourniquet loosely and for a shorter duration, if at all possible.
- DUse a larger gauge needle to minimize trauma to the vessel.
Show answer & explanationAnswer & explanation
Correct answer: C. Apply a tourniquet loosely and for a shorter duration, if at all possible.
Petechiae indicate fragile capillaries and potential bleeding abnormalities. Applying a tourniquet loosely and for a shorter duration minimizes pressure and reduces the risk of further capillary damage or hematoma formation. If the petechiae are widespread or severe, consulting with a nurse or physician is warranted.
Why the other options are wrong
- A. While alternative sites might be considered in severe cases, the initial step is to adjust the tourniquet application to prevent further damage at a typical site if feasible.
- B. Petechiae indicate capillary fragility and potential bleeding issues, which can affect venipuncture outcomes.
- D. Using a larger gauge needle increases the risk of trauma, which is counterproductive when capillaries are fragile.
Petechiae and Venipuncture
Petechiae are tiny, pinpoint red spots on the skin caused by minor hemorrhage. When present during venipuncture, they indicate capillary fragility or potential clotting issues, requiring modified technique to prevent complications.
- Indicate fragile capillaries or bleeding tendencies.
- Requires careful tourniquet application.
- Increases risk of hematoma if not managed properly.
Memory trick: Fragile skin, gentle touch, quick release.