Final answer:
Preferred restraint for venipuncture on a cat's left femoral vein is lateral recumbency with the cat on its right side and securely but gently restrained. This position provides optimal access to the left femoral vein and minimizes stress for the cat.
Step-by-step explanation:
The preferred position for restraint when performing venipuncture on a cat's left femoral vein is lateral recumbency, with the cat lying on its right side. This exposes the left inner thigh, allowing easier access to the femoral vein. The person restraining the cat should gently but firmly hold the cat's corresponding rear and front legs, providing minimal stress and preventing movement. It is important for the restrainer's hold to be secure yet not excessive, avoiding discomfort for the cat during the procedure. The handler might also need to hold the cat’s head away from the person performing venipuncture to prevent the cat from biting.
The technician drawing the blood should have a clear view and access to the vein, with the ability to adjust pressure and angle for successful venipuncture. If the cat becomes agitated, taking a moment to allow the cat to settle or reassessing the restraint method may be necessary. Remember, every cat is individual, and some may require slight variations on this position for optimal vein access and to minimize stress.
Preferred restraint for a cat during venipuncture of the left femoral vein is placing the cat in right lateral recumbency with secure but comfortable hold of limbs and body, allowing for safe and accessible blood collection.