during venipuncture a hematoma may result from
Third choice for venipuncture in the antecubital area. In many patients this vein may not be well anchored and will roll, making it difficult to access with the needle. Syringe draw should be considered as it gives the phlebotomist more control over a rolling vein. Pooling of blood and hematoma formation possible.ailure to use a tourniquet may result in missing the vein with the needle and the patient will have to be redrawn. Non-latex tourniquets must be available for patients who have an allergy to latex. Adapter and safety needle (evacuated tube system).