Final answer:
The radial vein of the inner arm is often chosen for initiating IV access in older adults due to the adequate subcutaneous tissue and lower complication risks compared to other sites such as the femoral or external jugular veins.
Step-by-step explanation:
When initiating IV access for an older adult client, the preferred site is typically the radial vein of the inner arm (Option C). This site is chosen because it generally has adequate subcutaneous tissue, which can provide a good cushion for the IV and decrease the risk of complications such as infiltration or thrombosis. Additionally, veins in this area are usually more accessible and present less risk than other sites such as the femoral or external jugular veins, which may be reserved for more emergent or critical situations due to their proximity to major vessels and organs.
The median cubital vein, located at the antecubital fossa, may also be considered as it is a common site for venipuncture due to its relatively large size and superficial location. However, care must be taken to avoid repetitive use or in instances where the patient may have compromised vein integrity that can lead to bruising or difficulty in cannulation.
It is less ideal to use sites like the femoral vein in the thigh or the external jugular vein due to their deep location and higher associated risks, especially in older adults who may have increased susceptibility to infections or other complications.