A nurse is collecting a medication history from a client who is scheduled to have a cardiac catheterization. Which of the following medications taken by the client interacts with contrast material and places the client at risk for acute kidney injury?

Choice A Reason: Adherence to proper hand hygiene

Proper hand hygiene is a fundamental practice in preventing infections, including ventilator-associated pneumonia (VAP). Hand hygiene involves washing hands with soap and water or using an alcohol-based hand sanitizer before and after patient contact, after touching potentially contaminated surfaces, and before performing any aseptic procedures. This practice helps to reduce the transmission of pathogens that can cause infections in mechanically ventilated patients. Studies have shown that adherence to hand hygiene protocols significantly decreases the incidence of VAP and other healthcare-associated infections.

Choice B Reason: Suction the client at least every 2 hours

While suctioning is an important aspect of care for mechanically ventilated patients, routine suctioning every 2 hours is not recommended. Instead, suctioning should be performed based on the patient’s clinical condition and as needed. Over-suctioning can cause trauma to the airway and increase the risk of infection. Therefore, this choice is not included in the best practices for preventing VAP.

Choice C Reason: Administering antiulcer medication

Administering antiulcer medication is a recommended practice to prevent stress ulcers and gastrointestinal bleeding in mechanically ventilated patients. Stress ulcers can lead to complications such as aspiration of gastric contents, which can contribute to the development of VAP. Antiulcer medications, such as proton pump inhibitors or H2 receptor antagonists, help to reduce gastric acidity and the risk of ulcer formation. This practice is part of the comprehensive care plan to prevent VAP.

Choice D Reason: Providing oral care per protocol

Providing oral care per protocol is a critical component of VAP prevention. Oral care involves cleaning the patient’s mouth, teeth, and gums to reduce the colonization of harmful bacteria that can be aspirated into the lungs. Protocols for oral care typically include the use of antiseptic solutions, such as chlorhexidine, to disinfect the oral cavity. Regular oral care has been shown to significantly reduce the incidence of VAP in mechanically ventilated patients.

Choice E Reason: Elevating the head of the bed

Elevating the head of the bed to an angle of 30 to 45 degrees is a recommended practice to prevent VAP. This position helps to reduce the risk of aspiration of gastric contents into the lungs, which is a major risk factor for VAP. Elevating the head of the bed also promotes better lung expansion and ventilation, which can improve the patient’s respiratory status. This practice is widely recognized as an effective measure to prevent VAP.

Choice F Reason: Suctioning the client on a regular schedule

Similar to Choice B, routine suctioning on a regular schedule is not recommended. Suctioning should be performed based on the patient’s clinical needs and not on a fixed schedule. Over-suctioning can cause harm and increase the risk of infection. Therefore, this choice is not included in the best practices for preventing VAP.

Choice G Reason: Turning and positioning the client at least every 2 hours

Turning and positioning the client at least every 2 hours is an important practice to prevent complications such as pressure ulcers and to promote lung expansion. Regular repositioning helps to improve ventilation and drainage of secretions, reducing the risk of VAP. This practice is part of the standard care for mechanically ventilated patients to prevent various complications, including VAP.

Choice A: Metformin

Reason: Metformin is known to interact with contrast material, particularly iodinated contrast media, and can increase the risk of acute kidney injury (AKI). This interaction can lead to a condition known as contrast-induced nephropathy (CIN) or contrast-induced acute kidney injury (CI-AKI). Metformin is primarily excreted by the kidneys, and impaired renal function can lead to its accumulation, increasing the risk of lactic acidosis, a rare but serious complication. Therefore, it is generally recommended to withhold metformin before and after the administration of contrast media until renal function is confirmed to be normal.

Choice B: Carvedilol

Reason: Carvedilol is a beta-blocker used to treat high blood pressure and heart failure. It does not have a known interaction with contrast media that would increase the risk of acute kidney injury. Carvedilol primarily affects the cardiovascular system and does not significantly impact renal function or interact with contrast agents.

Choice C: Nitroglycerin

Reason: Nitroglycerin is used to treat angina and other heart conditions by dilating blood vessels. It does not interact with contrast media in a way that would increase the risk of acute kidney injury. Nitroglycerin’s primary effects are on the cardiovascular system, and it does not have nephrotoxic properties.

Choice D: Atorvastatin

Reason: Atorvastatin is a statin used to lower cholesterol levels. While it can have effects on liver enzymes and muscle tissue, it does not interact with contrast media to increase the risk of acute kidney injury. Atorvastatin is metabolized by the liver and does not significantly impact renal function.