A patient is scheduled to receive insulin aspart and insulin detemir.
What is the correct procedure for the nurse to draw up the insulins for administration?

Choice A rationale:

The dorsal gluteal site, also known as the dorsogluteal site, was once a common choice for intramuscular injections. However, it has fallen out of favor due to several concerns, including:

Risk of sciatic nerve injury: The sciatic nerve, the largest nerve in the body, runs deep within the gluteal region. Injections into the dorsal gluteal site have a higher risk of accidentally hitting this nerve, which can lead to pain, numbness, and weakness in the leg.

Difficulty in landmarking: Accurately locating the dorsal gluteal site can be challenging, especially in patients with excessive adipose tissue or those who are unable to position themselves properly. Incorrect injection placement can increase the risk of tissue damage and poor drug absorption.

Pain: The dorsal gluteal site is often more painful than other intramuscular injection sites, likely due to the presence of more nerve endings in the area.

Choice B rationale:

The deltoid muscle, located in the upper arm, is a common site for intramuscular injections, particularly for vaccines. However, it has limitations when it comes to administering larger volumes of medication:

Small muscle mass: The deltoid is a relatively small muscle, limiting the amount of medication that can be safely injected. It's generally recommended to inject no more than 1-2 mL of medication into the deltoid muscle.

Proximity to nerves and blood vessels: The deltoid muscle is located near the radial nerve and brachial artery. Improper injection technique could potentially injure these structures.

Choice C rationale:

The vastus lateralis muscle, located in the anterolateral aspect of the thigh, is considered the preferred site for intramuscular injections in adults when the volume of medication exceeds 2 mL. Here's why:

Large muscle mass: The vastus lateralis is a large, thick muscle, capable of accommodating larger volumes of medication (up to 5 mL).

Easy to access: The vastus lateralis is easily accessible and can be injected with the patient in a sitting or lying position.

Fewer nerves and blood vessels: The vastus lateralis has fewer major nerves and blood vessels compared to other injection sites, reducing the risk of injury.

Pain tolerance: Studies have shown that injections into the vastus lateralis are generally less painful than injections into the deltoid or gluteal muscles.

Choice D rationale:

The lateral piriformis muscle is not a recognized or recommended site for intramuscular injections. It's a deep muscle located within the pelvic region, making it difficult to access and posing a higher risk of injury to surrounding structures.

Choice A rationale:

While checking intravenous lines for patency and redness is important, it's not the most immediate priority in the post- anesthesia care unit (PACU). Ensuring airway patency and adequate oxygenation takes precedence over IV assessment. Issues with IV lines can usually be addressed quickly if they arise, whereas compromised airway or breathing can rapidly lead to life- threatening complications.

Choice B rationale:

Assessment of nasogastric tubes and bowel sounds is also important, but it's not as urgent as checking the airway and breathing. Bowel sounds may be absent immediately after surgery due to anesthesia and bowel manipulation, and their presence or absence doesn't necessarily indicate an immediate problem. Similarly, nasogastric tubes can be checked and adjusted as needed after ensuring the patient's airway and breathing are stable.

Choice D rationale:

Checking the Foley catheter and surgical fluid intake is essential for monitoring fluid balance and renal function, but it's not a priority over assessing airway, breathing, and circulation (ABCs). Fluid status can be assessed and managed after ensuring the patient's respiratory and circulatory systems are functioning adequately.

Choice C rationale:

Checking the airway, lung sounds, and pulse oximetry is the most critical assessment in the PACU because it ensures that the patient is breathing effectively and has adequate oxygen saturation. This assessment addresses the primary ABCs of patient care:

Airway: The nurse will assess for any obstructions or potential for obstruction, such as swelling, secretions, or the tongue blocking the airway. They will also ensure proper positioning of the head and neck to maintain airway patency.

Breathing: The nurse will listen to lung sounds to evaluate air entry and identify any signs of respiratory distress, such as wheezing, crackles, or decreased breath sounds. They will also monitor respiratory rate and effort.

Circulation: Pulse oximetry measures oxygen saturation in the blood, providing a quick and non-invasive assessment of oxygenation status. It's essential to ensure adequate oxygen delivery to tissues and organs.

By prioritizing the assessment of airway, lung sounds, and pulse oximetry, the nurse can quickly identify and intervene in any respiratory or oxygenation issues, preventing potentially life-threatening complications.