A patient undergoing hemodialysis develops a headache, nausea, and restlessness, followed by a decreased level of consciousness. The nurse recognizes these symptoms as indicative of which complication?

1. A

   Air embolism

2. B

   Dialysis disequilibrium syndrome

3. C

   Hypotension

4. D

   Exsanguination

Appeared in: RUHS, Jaipur, M.Sc Nursing Entrance Exam-2015

Explanation

• The patient's presentation with headache, nausea, restlessness, and a declining level of consciousness are the hallmark neurological signs of Dialysis Disequilibrium Syndrome (DDS).
• DDS is caused by a rapid reduction in blood urea nitrogen (BUN) during hemodialysis.
• This rapid solute removal creates a temporary osmotic gradient between the blood and the brain, leading to a fluid shift into brain cells.
• The resulting cerebral edema and increased intracranial pressure produce the observed neurological symptoms.

Why Other Options Were Wrong

• Option A: Air embolism presents primarily with acute cardiopulmonary distress, such as sudden shortness of breath, chest pain, and cyanosis, not the progressive neurological decline described.
• Option C: Hypotension, while the most common complication, typically manifests as dizziness, lightheadedness, nausea, and sweating. It does not usually cause restlessness or a significant decrease in the level of consciousness unless it is severe and prolonged, leading to cerebral hypoperfusion.
• Option D: Exsanguination is catastrophic blood loss, which would present with signs of severe hypovolemic shock, such as extreme hypotension, rapid heart rate, pallor, and, most importantly, visible hemorrhage from the dialysis access site.

Related Visual

Clinical Relevance

• Nursing practice connection: Use the key finding related to Complications of Hemodialysis to guide bedside assessment, documentation, and the next nursing action.
• Nurses play a critical role in preventing and recognizing DDS. High-risk patients (new to dialysis, very high pre-dialysis BUN, pre-existing neurological conditions) require careful monitoring.
• The primary nursing intervention for suspected DDS is to immediately slow or stop the dialysis treatment and alert the nephrologist. This action can prevent progression to more severe neurological damage like seizures or coma.
• Patient education about reporting early symptoms like headache or nausea is a vital component of safe dialysis care.

How to Approach the Question

• First, identify the core elements of the clinical scenario: a patient is undergoing hemodialysis.
• Next, cluster the patient's symptoms: headache, nausea, restlessness, and decreased level of consciousness. Recognize that this is primarily a neurological presentation.
• Systematically evaluate each option against this symptom cluster.
• Rule out Air Embolism, as its classic signs are cardiopulmonary (chest pain, dyspnea).
• Rule out Hypotension, as its main symptoms are dizziness and lightheadedness, not progressive neurological decline.
• Rule out Exsanguination, which involves massive blood loss and signs of hypovolemic shock.

Concept Tested & Keywords

• Concept Tested: Complications of Hemodialysis
• Stem keywords: hemodialysis, headache, nausea, restlessness, decreased level of consciousness
• Lead-in keywords: indicative of which complication
• Clinical cues: The combination of neurological symptoms (headache, restlessness, decreased LOC) in a patient undergoing hemodialysis is a strong indicator of a specific complication.

Question ID

Qt82Cr9d7bKJrrKM5is2n3

Copy ID

Reference Book

E6 Medicine Harrison 22e Part 2 p. 304-306