A nurse is caring for a client receiving hemodialysis. Which nursing intervention should be the priority during the dialysis procedure?

When caring for a client undergoing hemodialysis, the nurse's primary focus must be on preventing and promptly detecting life-threatening complications. The procedure involves the rapid removal of fluid and solutes, which creates significant hemodynamic stress. The most common and dangerous acute complication is intradialytic hypotension (IDH). Research identifies IDH as a prevalent and critical event that is strongly associated with increased morbidity, mortality, and reduced quality of life in patients with end-stage renal disease ^[2]. The underlying pathophysiology is multifactorial, driven primarily by an excessive ultrafiltration rate (UFR) that outpaces the body's ability to refill the intravascular space from the interstitial and intracellular compartments ^[2]. This rapid volume depletion triggers hypovolemic stress, which can lead to myocardial stunning, cerebral ischemia, and other end-organ dysfunction ^[2].

Therefore, vigilant hemodynamic monitoring is the cornerstone of safe dialysis practice. Assessing blood pressure and pulse at frequent intervals, such as every 15 minutes, allows the nurse to detect early signs of IDH—a dropping systolic pressure, narrowing pulse pressure, or a compensatory tachycardia. Early recognition is crucial because it enables immediate, life-saving interventions like reducing the UFR, placing the client in the Trendelenburg position, or administering a fluid bolus, thereby preventing the cascade of hypovolemic shock and its severe consequences. A study evaluating nursing knowledge and practice confirms that competent management of IDH is essential to prevent adverse clinical outcomes and maintain the efficiency of the dialysis procedure ^[1].

The other options are inappropriate or dangerous. Maintaining a strict supine position is not required and can be uncomfortable; the client's position can be adjusted for comfort as long as the vascular access is protected. The dialysis access site is dedicated solely to the extracorporeal circuit and must never be used for medication administration due to the risk of infection, thrombosis, or inadvertent bolus of a concentrated drug. Encouraging fluid intake directly contradicts the purpose of the treatment, which is to remove excess fluid; doing so would undermine the prescribed fluid removal goal and could lead to fluid overload.