A client has been prescribed nifedipine for angina. What is the priority assessment for the nurse to make prior to giving this medication?
A.
Sulfa allergy
B.
aPTT
C.
Hemoglobin
D.
Blood pressure
The Correct Answer and Explanation is:
The priority assessment for the nurse to make prior to administering nifedipine is:
D. Blood pressure
Explanation:
Nifedipine is a calcium channel blocker commonly prescribed for the management of angina, hypertension, and other cardiovascular conditions. Its primary mechanism of action involves the inhibition of calcium ions entering cardiac and smooth muscle cells, which results in vasodilation and a subsequent decrease in blood pressure. Given its effects on blood vessels and blood pressure, it is crucial to monitor blood pressure before administering nifedipine.
Here’s a detailed explanation of why blood pressure is the priority assessment:
- Effects on Blood Pressure: Nifedipine primarily acts as a vasodilator, leading to a reduction in systemic vascular resistance and, consequently, a decrease in blood pressure. Administering nifedipine to a client who already has low blood pressure can exacerbate hypotension, leading to potential adverse effects such as dizziness, fainting, or even shock. Therefore, assessing the blood pressure before administration helps ensure that it is within a safe range for the medication to be given.
- Monitoring for Adverse Effects: Regular monitoring of blood pressure is essential to prevent hypotension and other related complications. For patients taking nifedipine, the nurse should also monitor for symptoms of hypotension, such as lightheadedness or syncope, and adjust the medication dose or take other actions as necessary based on the patient’s blood pressure readings.
- Individualization of Care: Each patient may respond differently to nifedipine. Some might experience a more pronounced drop in blood pressure. Monitoring before administering the drug allows the nurse to tailor the treatment to the individual patient’s needs, thereby optimizing therapeutic outcomes and minimizing potential risks.
In contrast, assessing for a sulfa allergy (A) is not directly relevant to nifedipine, as it is not a sulfonamide. Activated partial thromboplastin time (aPTT) (B) and hemoglobin (C) are more relevant to other medications or conditions but are not directly related to the safe use of nifedipine. Thus, monitoring blood pressure is crucial to ensure the medication’s safety and effectiveness.