If a nurse needs to administer 3 mL of medication intramuscularly to an adult patient, which site should be used for the injection?
Dorsal gluteal
Deltoid
Vastus lateralis
Lateral piriformis
The Correct Answer is C
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.
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Correct Answer is D
Explanation
Choice A rationale:
STAT orders are urgent and require immediate action. They are typically used for life-threatening situations or when a rapid response is needed to prevent serious harm. In this case, an EKG is important for patients admitted to the cardiac unit, but it is not necessarily an urgent procedure that requires immediate action in all cases.
STAT orders are often given verbally or over the phone, and they are typically written in all capital letters with the word "STAT" prominently displayed.
Examples of STAT orders include medications for cardiac arrest, intubation for respiratory distress, or emergency surgery for a ruptured appendix.
Choice B rationale:
PRN orders are "as needed" orders, meaning they are only carried out when a specific condition or symptom arises. They are not routinely implemented for all patients in a particular unit or setting.
PRN orders allow for flexibility in treatment plans and can help to manage pain, nausea, anxiety, or other symptoms that may fluctuate over time.
Examples of PRN orders include pain medication, anti-nausea medication, or sedatives.
Choice C rationale:
One-time orders are administered only once and are not repeated. They are often used for procedures, diagnostic tests, or medications that are not required on an ongoing basis.
In this case, an EKG is typically a one-time order for patients outside of the cardiac unit, but it becomes a standing order for patients admitted to the cardiac unit due to the increased importance of cardiac monitoring in this setting.
Examples of one-time orders include a chest X-ray, a blood draw, or a dose of antibiotics.
Choice D rationale:
Standing orders are routine orders that are implemented for all patients in a particular unit or setting, unless otherwise specified. They are designed to provide consistent and standardized care, and they often reflect best practices or guidelines for a specific patient population.
Standing orders can help to streamline care processes, reduce the need for individual orders, and ensure that patients receive necessary treatments or interventions without delay.
In this case, the standing order for an EKG upon admission to the cardiac unit ensures that all patients receive this important cardiac assessment, even if the ordering provider does not specifically write an order for it.
Other examples of standing orders in a cardiac unit might include daily weights, regular vital sign checks, or administration of cardiac medications.
Correct Answer is A
Explanation
The correct answer is Choice A.
Choice A rationale:
Tetanus is an acute infectious disease caused by spores of the bacterium Clostridium tetani.The spores are found everywhere in the environment, particularly in soil, ash, intestinal tracts/feces of animals and humans, and on the surfaces of skin and rusty tools like nails, needles, barbed wire, etc.Anyone can get tetanus, but the disease is particularly common and serious in newborn babies and pregnant women who have not been sufficiently immunized with tetanus-toxoid-containing vaccines.
To ensure that there is adequate antitoxin to neutralize tetanus toxin in the case of a tetanus-prone injury, a booster dose is advised if it has been longer than 10 years since the last tetanus vaccine dose.This is because a single dose of tetanus toxoid produces a rapid anamnestic response. Therefore, if a patient with a puncture wound has not received a tetanus toxoid vaccination in the last 10 years, they would require an additional injection before being discharged from the emergency department.
Choice B rationale:
While it might seem prudent to administer a tetanus toxoid vaccination every year, this is not necessary according to current medical guidelines.Over-vaccination could potentially lead to an increased risk of adverse reactions without providing additional benefits. Therefore, a tetanus toxoid vaccination is not required every year.
Choice C rationale:
A 5-year interval for tetanus toxoid vaccination is not the standard recommendation for general population.However, in some specific cases, such as when indicated for wound management, a tetanus toxoid–containing vaccine might be administered if ≥5 years have elapsed since the previous receipt of any tetanus toxoid–containing vaccine.
Choice D rationale:
A 2-year interval for tetanus toxoid vaccination is not the standard recommendation.The tetanus toxoid vaccination provides protection for a much longer period, and therefore, it is not necessary to administer the vaccine every 2 years.
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