A nurse is caring for a client receiving hemodialysis. Which… | 마이메르시 MyMerci
Adult Health
문제

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

해설
Continuous BP and pulse monitoring is critical during hemodialysis to detect hypotension and cardiovascular complications from fluid shifts. This allows immediate intervention to prevent serious events. Other interventions are less urgent or inappropriate during dialysis.

심화 해설

Core Nursing Explanation Key Concept Analysis: This question assesses the priority nursing intervention during Hemodialysis. The core theme is patient safety and hemodynamic monitoring. Hemodialysis involves rapid removal of fluid and solutes from the blood, which can lead to significant intravascular volume shifts. These shifts are the primary cause of complications during the procedure, most notably hypotension.

Answer Rationale: Key Point! The correct answer is Monitor blood pressure and pulse every 15 minutes throughout the procedure. This is the priority because it directly addresses the most common and potentially dangerous complication: dialysis-induced hypotension. Rapid fluid removal can cause a drop in blood pressure, leading to symptoms like dizziness, nausea, cramping, and in severe cases, cardiac ischemia or loss of consciousness. Frequent vital sign monitoring allows for early detection and prompt intervention, such as adjusting the ultrafiltration rate or administering a fluid bolus (normal saline).

Distractor Analysis:
  • Watch out for confusion! Option ②: Ensuring a supine position is not always required and is not the priority. While some patients may need to lie flat if hypotensive, many patients sit in recliners during dialysis. The position is adjusted based on patient tolerance and vital signs.
  • Option ③: Administering medications through the dialysis access site is contraindicated. The vascular access (arteriovenous fistula, graft, or central venous catheter) is a sterile, dedicated lifeline for dialysis. Using it for medication administration risks infection, clotting, and damage to the access. Medications should be given via a separate, peripheral IV site if needed.
  • Option ④: Encouraging fluid intake during dialysis is counterproductive and dangerous. The goal of hemodialysis is to remove excess fluid (ultrafiltration). Drinking during treatment adds to the fluid volume that needs to be removed, making it harder to achieve the dry weight goal and increasing the risk of hypotension and cramping. Fluid restriction is a key part of inter-dialytic management.
Related Concepts: This integrates knowledge of renal pathophysiology, fluid and electrolyte balance, and principles of managing a patient with End-Stage Renal Disease (ESRD). Understanding the mechanics of hemodialysis and its impact on the cardiovascular system is essential for safe patient care.

Concept Summary
ConceptExplanation
HemodialysisA procedure that filters waste, removes extra fluid, and corrects electrolyte imbalances via an external machine and a vascular access.
Primary ComplicationHypotension due to rapid fluid and solute removal (ultrafiltration).
Priority InterventionFrequent hemodynamic monitoring (BP, pulse) to detect and manage hypotension early.
Vascular Access CareKeep sterile, do not use for BP, IV meds, or blood draws (except in emergencies per protocol).
Fluid ManagementFluid is restricted between treatments; drinking during dialysis is contraindicated.

Side-by-Side Comparison!
InterventionDuring Hemodialysis (Priority)Between Hemodialysis Sessions (Home Care)
Fluid IntakeAvoid/restrict to achieve dry weight.Strict fluid restriction based on urine output and weight gain.
Vascular Access UseOnly for dialysis. No medications or other uses.Assess for thrill/bruit; protect from injury; keep clean and dry.
Vital Sign MonitoringFrequent (q15-30min) to detect hypotension.Monitor for signs of fluid overload (edema, SOB) and access infection.
PositioningAs tolerated (often sitting); supine if hypotensive.Elevate access arm while sleeping; avoid pressure on the access.

Anatomy, Physiology & Pharmacology Points
  • Physiology: Hemodialysis works via diffusion and ultrafiltration across a semipermeable membrane. Rapid removal of plasma water reduces intravascular volume, decreasing venous return and cardiac output, leading to hypotension.
  • Vascular Access: The Arteriovenous Fistula (AVF) is the preferred access. It is created by surgically connecting an artery to a vein, allowing high blood flow needed for dialysis.
  • Pharmacology: Heparin is often administered during dialysis to prevent clotting in the extracorporeal circuit. Nurses must monitor for signs of bleeding.

Memory Tips
  • Acronym: BPM for Dialysis Priority: Blood Pressure Monitoring is the #1 priority.
  • Think "Dry & Monitor": Goal is to get to "dry weight," so don't add fluid (no drinking). Monitor for the side effect of going too dry (hypotension).
  • Access is Sacred: The dialysis access is the patient's lifeline. Nothing goes in or out except for the dialysis circuit.

High-Frequency NCLEX Topics NCLEX frequently tests on:
  1. Priority action during a procedure (safety first!).
  2. Recognizing contraindicated actions (like giving meds through the dialysis line).
  3. Understanding the rationale behind common complications of treatments.
  4. Care of specific devices and access sites (central lines, fistulas, chest tubes, etc.).

Watch Out for Question Variations!
  • Symptom Recognition: "A client on hemodialysis reports dizziness and nausea. What should the nurse assess first?" (Answer: Check blood pressure.)
  • Post-Procedure Care: "Following hemodialysis, which client finding requires immediate intervention?" (Answer: Hypotension or bleeding from the access site.)
  • Patient Education: "The nurse is teaching a client about caring for an arteriovenous fistula. Which statement by the client indicates understanding?" (Correct: "I will check for a vibration (thrill) over my fistula every day.")

임상 시나리오

Nursing Clinical Practice Guide Clinical Scenario: Mr. Johnson, a 68-year-old with ESRD, is 30 minutes into his scheduled hemodialysis treatment. He has an arteriovenous graft in his left upper arm. The nurse notes he appears pale and says he feels "lightheaded."

Nursing Intervention Strategy:
  1. Immediate Assessment (ABCs):
    • Check Vital Signs: BP, pulse, O2 saturation. You find his BP is 88/50 mmHg (from a baseline of 142/78). Pulse is 120 bpm and thready.
    • Assess Symptoms: Ask about cramping, nausea, chest pain.
    • Assess Dialysis Parameters: Check the ultrafiltration rate and volume removed so far.
  2. Immediate Interventions:
    • Lower the Head of the Bed (Trendelenburg position if tolerated) to improve venous return.
    • Stop or Slow Ultrafiltration as per protocol.
    • Administer a Normal Saline Bolus (100-250 mL) into the venous side of the dialysis circuit as ordered.
    • Reassure the patient and continue frequent monitoring.
  3. Post-Episode Care & Evaluation:
    • Document the event, interventions, and patient response.
    • Re-evaluate the patient's dry weight with the nephrologist.
    • Reinforce education on fluid restriction and reporting symptoms.
Patient Safety and Precautions:
  • Never administer any medication or fluid other than prescribed saline boluses through the dialysis access ports.
  • Always use aseptic technique when connecting/disconnecting the dialysis lines.
  • Monitor the vascular access site for signs of infection (redness, warmth, drainage) or compromised flow (loss of thrill/bruit).

Nursing Procedure & Medication Flow During Hemodialysis Monitoring:
  1. Pre-dialysis: Obtain weight, vital signs, assess access site.
  2. Initiation: Monitor closely for first 15-30 minutes for first-use syndrome or reaction to the dialyzer.
  3. Ongoing (q15-30 min): Monitor BP, pulse, assess for symptoms. Monitor machine parameters (blood flow rate, venous/arterial pressures).
  4. Post-dialysis: Obtain weight, vital signs, assess access site for bleeding, apply pressure dressing.
Medication Note: Many medications (especially antihypertensives) are held before dialysis to avoid exacerbating hypotension. Always verify medication schedules with the dialysis team.

A Word from Your Senior Nurse Caring for a patient on hemodialysis is a perfect example of why understanding pathophysiology makes you a better nurse. You're not just watching a machine; you're managing a delicate balance of a patient's entire fluid and electrolyte status in real-time. That moment when you catch a dropping BP early and intervene? That's you preventing a fall, a cardiac event, or a traumatic code. On the NCLEX, they're testing if you know the "why" behind the priority. In real life, that knowledge lets you act with confidence and keep your patients safe. Always think: "What is the biggest threat to this patient's safety right now?" For a patient on the dialysis machine, it's almost always a hemodynamic one.

핵심 개념

  • Hemodialysis — A renal replacement therapy that removes waste products and excess fluid from the blood by circulating it through an external filter (dialyzer).
  • Hypotension — Abnormally low blood pressure; a common complication during hemodialysis due to rapid fluid removal (ultrafiltration).
  • Vascular Access — The site created for blood removal and return during hemodialysis; types include Arteriovenous Fistula (AVF), Arteriovenous Graft (AVG), and Central Venous Catheter (CVC).
  • Ultrafiltration — The process of fluid removal across the dialyzer membrane during hemodialysis, driven by a pressure gradient.
  • End-Stage Renal Disease — The final, permanent stage of chronic kidney disease where the kidneys no longer function well enough to sustain life, requiring dialysis or transplantation.

마이메르시로 국가고시 완벽 대비

기출문제와 상세 해설을 무료로. 내 약점을 분석하고 진도를 관리하며 더 똑똑하게 공부하세요.

무료로 시작하기
App Store Google Play

학습 참고용입니다. 실제 임상은 최신 지침과 소속 기관 프로토콜을 따르세요.