Final answer:
The CPCT should use a smaller needle, like a 23-gauge butterfly needle, for gentler venipuncture on a 91-year-old patient, or consider a capillary stick if less blood is needed, practicing with increased care to protect delicate veins.
Step-by-step explanation:
The CPCT should utilize a gentle method when performing a venous blood draw on a 91-year-old patient due to the fragility of their veins. When drawing blood from elderly patients, phlebotomists often use a smaller needle, such as a 23-gauge butterfly needle, due to the delicate nature of their veins. The phlebotomy procedure typically involves a venipuncture, wherein a surface vein in the arm is punctured to collect blood. Other alternative methods, such as a capillary stick, may be considered if only a small quantity of blood is required and venipuncture is not viable. Additionally, the phlebotomist must exercise increased care to minimize discomfort and prevent damage to the patient’s veins. After collection, the blood may be placed in specific tubes (such as EDTA tubes or those containing lithium heparin) and centrifuged to obtain plasma for medical analysis.