A nurse is caring for a client receiving cisplatin chemotherapy. Which nursing intervention is the most important priority to prevent nephrotoxicity?

Cisplatin is highly nephrotoxic; pre- and post-hydration with normal saline is critical to maintain urine output and dilute drug concentration, preventing acute kidney injury. Other options are important but not the highest priority for nephrotoxicity prevention.

Core Nursing Explanation Key Concept Analysis: This question assesses the priority nursing intervention to prevent a specific, life-threatening side effect of a chemotherapy drug. The core theme is Chemotherapy toxicity management, focusing on the nephrotoxicity of Cisplatin. Cisplatin is a platinum-based alkylating agent that is highly effective but notorious for causing dose-limiting kidney damage. The drug accumulates in the renal tubules, causing direct tubular cell injury, which can lead to Acute Kidney Injury (AKI). Preventing this is a primary nursing goal during administration.

Answer Rationale: Key Point! The most critical intervention to prevent cisplatin-induced nephrotoxicity is aggressive Hydration and diuresis. Administering IV fluids, typically Normal Saline (0.9% Sodium Chloride), before, during, and after the cisplatin infusion serves two main purposes: 1) It ensures high urine output, which helps flush the drug through the kidneys quickly, reducing its contact time with renal tubular cells. 2) The chloride ions in normal saline competitively inhibit cisplatin from binding to renal tubules. This protocol is a standard, evidence-based practice to protect renal function. The client's normal baseline creatinine (0.9 mg/dL) and BUN (18 mg/dL) indicate good pre-treatment kidney function, which must be preserved.

Distractor Analysis:
Watch out for confusion! Option 1: Monitoring CBC is crucial for managing Myelosuppression (bone marrow suppression), a common side effect of many chemotherapies including cisplatin, which causes neutropenia, anemia, and thrombocytopenia. However, it does not directly prevent nephrotoxicity.
Option 2: Administering antiemetics is a high priority for patient comfort and preventing complications like dehydration and electrolyte imbalance from vomiting. Cisplatin is highly emetogenic. While important, it is a supportive measure for a different side effect, not the primary intervention to prevent kidney damage.
Option 3: Assessing for peripheral neuropathy is vital because cisplatin causes cumulative, dose-related neurotoxicity (numbness, tingling in hands/feet). This is a long-term management concern but is not the immediate priority for preventing acute nephrotoxicity during the infusion cycle.

Related Concepts: Nursing care for cisplatin extends beyond hydration. Monitoring intake and output (I&O), daily weights, and serial renal function tests (BUN, creatinine, electrolytes like magnesium and potassium, which cisplatin also depletes) are essential. Patient education on reporting decreased urine output is also key.

Concept Summary

Concept	Key Points
Cisplatin Nephrotoxicity	Dose-limiting. Caused by tubular damage. Prevented by vigorous hydration with NS and forced diuresis.
Hydration Protocol	IV Normal Saline before, during, after infusion. Goal: maintain urine output >100 mL/hr.
Other Cisplatin Toxicities	Myelosuppression (monitor CBC), Severe nausea/vomiting (give antiemetics), Neurotoxicity (assess sensation), Ototoxicity (assess hearing).
Nursing Monitoring	Strict I&O, daily weights, BUN/Cr, electrolytes (Mg+, K+).

Side-by-Side Comparison!

Chemotherapy Agent	Key Dose-Limiting Toxicity	Priority Nursing Intervention for Prevention
Cisplatin	Nephrotoxicity	Aggressive IV hydration with Normal Saline
Doxorubicin	Cardiotoxicity	Monitor Ejection Fraction (EF) via echocardiogram; lifetime dose limit
Bleomycin	Pulmonary Fibrosis	Monitor pulmonary function tests (PFTs); assess for cough/dyspnea
Vincristine	Neurotoxicity	Assess for peripheral neuropathy, constipation (autonomic)

Anatomy, Physiology & Pharmacology Points

• Pharmacology: Cisplatin is an alkylating agent. It forms cross-links in DNA, preventing cell replication. It is not cell-cycle specific.
• Physiology: The kidneys filter and concentrate the drug. High concentration in tubular fluid leads to toxic accumulation in proximal tubular cells, causing necrosis and apoptosis.
• Mechanism of Protection: Normal saline hydration increases glomerular filtration rate (GFR) and urine flow. The high chloride content inhibits the conversion of cisplatin to its more nephrotoxic form within the kidney.

Memory Tips

• Acronym: For Cisplatin toxicities, remember "NO More Bad Kidneys" = Nephro, Ototoxicity, Myelosuppression, Bad nausea (Emesis), Kidneys (again for emphasis!).
• Association: Think "Cisplatin needs a SALINE shower for its KIDNEYS." Links the drug, the intervention (saline), and the target organ.

High-Frequency NCLEX Topics The NCLEX frequently tests priority-setting for chemotherapy side effects. You must know the primary toxicity for common chemotherapeutic agents and the Key Point! number one nursing action to prevent it. Cisplatin nephrotoxicity and hydration is a classic example.

Watch Out for Question Variations!

• Instead of asking for the priority intervention, the question might ask: "Which client finding during cisplatin infusion requires immediate intervention?" Correct answer: "Urine output of 30 mL over the past 2 hours."
• It could test knowledge of the type of IV fluid used (Normal Saline, not D5W).
• It might combine toxicities: "The nurse should hold the cisplatin and notify the provider for which lab value?" Correct answer: A sharply elevated serum creatinine.

Nursing Clinical Practice Guide Clinical Scenario: You are the oncology nurse preparing Ms. Johnson, 58, for her third cycle of cisplatin. In report, you hear her previous cycles were tough with nausea, but her kidney function has remained stable. As you start her pre-hydration, she mentions she's "just not that thirsty" and drank very little at home last night.

Nursing Intervention Strategy:

1. Assessment: Before initiation, verify current weight, vital signs, and most recent BUN/Cr. Perform a focused assessment: ask about nausea, vomiting, hearing changes (tinnitus), and numbness/tingling in extremities. Assess hydration status (skin turgor, mucous membranes).
2. Planning & Implementation: The priority is establishing and maintaining the hydration protocol.
   • Pre-hydration: Hang 1-2 liters of 0.9% Normal Saline to infuse over 2-4 hours BEFORE the cisplatin is started. The goal is to achieve a urine output of at least 100-150 mL/hr.
   • During Infusion: Cisplatin is typically given as a slow IV infusion (over 1-6 hours). Hydration with NS continues concurrently. Strict I&O is mandatory—likely hourly urine output measurement.
   • Post-hydration: Continue NS infusion for several hours after cisplatin is complete to ensure drug clearance.
   • Concurrent Care: Administer prescribed antiemetics (e.g., ondansetron, aprepitant) 30-60 minutes before chemo. Monitor for infusion reactions.
3. Evaluation & Patient Education: Evaluate effectiveness by stable serum creatinine and adequate urine output. Educate the patient: "The extra IV fluids are the best protection for your kidneys from this medicine. It's very important to tell us if you feel like you aren't urinating as much." Also educate on reporting late side effects like hearing changes or persistent tingling.

Patient Safety and Precautions:

• Contraindication/Precaution: Do not administer cisplatin if the patient has significant pre-existing renal impairment (elevated Cr) or severe hearing loss unless benefits outweigh risks.
• Monitoring: In addition to I&O, monitor electrolytes closely, especially Magnesium (Mg2+) and Potassium (K+), as cisplatin causes renal wasting of these, leading to hypomagnesemia and hypokalemia.
• Extravasation: Cisplatin is a vesicant (can cause severe tissue damage). Assess the IV site frequently for pain, redness, or swelling. It must be administered through a patent, free-flowing IV line, preferably a central venous access device (CVAD).

Nursing Procedure & Medication Flow Cisplatin Administration & Hydration Protocol (Example):

1. Verify order for cisplatin dose, pre/post hydration fluids, and pre-medications (antiemetics, steroids).
2. Assess lab values: CBC, Comprehensive Metabolic Panel (CMP) including BUN, Cr, Mg+, K+.
3. Establish IV access with a large-bore peripheral IV or access CVAD. Confirm patency.
4. Begin pre-hydration with 0.9% NS at 250-500 mL/hr as ordered. Monitor for fluid overload (crackles, shortness of breath, edema), especially in elderly or cardiac patients.
5. Once adequate urine output is confirmed, administer antiemetics.
6. Double-check cisplatin with another nurse per facility policy (high-alert medication).
7. Administer cisplatin IV infusion over the prescribed time (e.g., 1-2 hours). Do NOT bolus.
8. Continue hydration during and after infusion. Maintain strict I&O. Goal urine output: >100 mL/hr.
9. Post-infusion: Monitor for delayed nausea/vomiting. Encourage oral fluids once tolerated.
10. Discharge teaching: Report decreased urine output, severe nausea/vomiting, hearing changes, or unusual tingling/numbness.

A Word from Your Senior Nurse "Managing chemotherapy is a balancing act. Our job is to deliver a powerful drug that can cure cancer while protecting the patient from its potentially devastating side effects. With cisplatin, your vigilant monitoring of intake and output isn't just a routine task—it's your direct window into your patient's kidney function. Catching a drop in urine output early can mean the difference between a temporary bump in creatinine and permanent renal damage. In clinicals and on the NCLEX, always ask yourself: 'What is the worst thing that could happen with this drug right now?' For cisplatin, it's kidney failure. So, your priority action is always what prevents that. Think like a protector!"