NANDA-I 2024-2026 edition · Reviewed November 2, 2026 by the editorial team
Diagnosis at a glance
| Code | 00026 |
|---|---|
| Label | Excessive fluid volume |
| Spanish label | Volumen de líquidos excesivo |
| Domain | 2. Nutrition |
| Class | 5. Hydration |
| Type | Problem-focused |
| Status | Current |
What it means
The body accumulates more fluid than it needs, both inside the blood vessels and in the tissues. It shows up as rapid weight gain, edema, distended neck veins and, in severe cases, pulmonary congestion. It usually develops when the heart, kidneys or liver can't handle water and sodium properly.
Explanation written by our team. The official definition is in the NANDA-I 2024-2026 book.
When to use it
Clinical situations where it commonly shows up. The diagnosis is confirmed by your assessment, not by the medical diagnosis.
- Acute decompensated heart failure.
- Chronic kidney disease or acute kidney injury with low urine output.
- Hemodialysis patients between treatments.
- Cirrhosis with ascites and edema.
- Postoperative or ICU patients receiving large volumes of IV fluids.
- Nephrotic syndrome.
What to assess
- Daily weight before breakfast, after voiding, on the same scale and in similar clothing.
- Intake and output, counting IV fluids, medication diluents and liquid foods.
- Edema: location and pitting grade (1+ to 4+), and whether it extends to the thighs, sacrum or abdomen.
- Jugular venous distension with the head of the bed at 45°.
- Lung sounds (crackles), respiratory rate, SpO2 and whether the patient can lie flat.
- Blood pressure, heart rate and urine output.
- Available labs: sodium, potassium, creatinine, hemoglobin and hematocrit.
- What the patient eats and drinks at home, how much salt they use and what they know about their restrictions.
Defining characteristics
Assessment findings that support the diagnosis. They go in the "as evidenced by" part of the statement.
- Weight gain of more than 2 kg over a few days.
- Pitting edema in the ankles, legs or sacrum.
- Jugular venous distension.
- Crackles on auscultation.
- Dyspnea, orthopnea or waking at night short of breath.
- Intake consistently greater than output.
- Decreased urine output.
- Elevated blood pressure.
- S3 heart sound.
- Pleural effusion or ascites on imaging or physical exam.
- Low hemoglobin and hematocrit from hemodilution.
- Restlessness or mental status changes in severe overload.
Related factors
The causes nursing can act on. They go in the "related to" part of the statement.
- Sodium intake above the prescribed limit.
- Fluid intake above the prescribed limit.
- Skipped diuretic or other prescribed medications.
- Insufficient knowledge of sodium restriction and daily weight monitoring.
- Frequent processed foods or eating out.
- IV fluids infusing without volume or rate control.
At-risk populations
- Older adults with heart failure.
- People on hemodialysis.
- Postoperative or ICU patients receiving large amounts of IV fluids.
- People with cirrhosis.
- People whose diet is high in salt and processed foods.
Associated conditions
- Heart failure.
- Chronic kidney disease and acute kidney injury.
- Liver cirrhosis.
- Nephrotic syndrome.
- Corticosteroid or NSAID therapy.
- Large-volume IV fluid therapy.
How to write it (PES)
Excessive fluid volume related to sodium intake above the prescribed limit and skipped diuretic doses as evidenced by 3.5 kg weight gain in 6 days, 2+ pitting edema to the knees, JVD at 45°, bilateral basilar crackles and a positive fluid balance of 900 mL in 24 hours.
Excessive fluid volume (00026).
What led to the excess that nursing can work on: extra salt and fluids, missed medications, uncontrolled IV fluids.
The overload findings with numbers: kilograms gained and over how many days, edema grade, lung sounds, fluid balance.
Example written by our team for a fictional patient. Adapt it to your own patient's data. Build your statement with the PES generator.
Goals / expected outcomes
Written in measurable terms: what, how much and by when.
- Weight decreases steadily, per the daily target set by the provider, until dry weight is reached.
- Edema decreases to 1+ or resolves within 72 hours.
- Within 72 hours, lungs are clear of crackles and the patient rests with the head of the bed at 30° without dyspnea.
- Daily fluid balance is negative per the ordered target while overload persists.
- Before discharge, the patient names the high-sodium foods they eat most often and explains how to log a daily weight.
Nursing interventions and rationales
| Intervention | Rationale |
|---|---|
| Weigh every morning before breakfast, after voiding, on the same scale. | Weight is the most reliable measure of how much fluid the patient is gaining or losing. |
| Keep strict intake and output, including medication diluents. | The milliliters from IV medication diluents add up and are often forgotten. |
| Monitor response to the prescribed diuretic: urine output, blood pressure, potassium and creatinine. | Brisk diuresis can drop blood pressure or potassium; a poor response should be reported. |
| Place the patient in semi-Fowler's or Fowler's position if dyspneic. | Eases breathing when there is fluid in the lungs. |
| Auscultate the lungs every shift and report increasing crackles or falling SpO2. | It signals that overload is progressing toward pulmonary edema. |
| If a fluid restriction is ordered, plan its distribution across the day with the patient and offer ice chips or mouth rinses for thirst, counting them in the I&O. | Thirst is the hardest complaint to manage, and a plan the patient helped make is easier to follow. |
| Run IV fluids on an infusion pump and check the rate on every round. | Prevents a fluid from infusing faster than ordered. |
| Protect edematous skin: reposition, moisturize and avoid pressure or friction. | Edematous skin breaks down easily and heals slowly. |
| Teach the patient to recognize high-sodium foods, read labels and monitor weight at home. | Lets them catch new fluid overload before it requires a hospital stay. |
NOC outcomes and NIC interventions
Outcomes (NOC) and interventions (NIC) that published sources link to this diagnosis. Pick the ones that fit your patient.
NOC outcomes
- 0603Fluid Overload Severity
- 0400Cardiac Pump Effectiveness
- 1008Nutritional Status: Food & Fluid Intake
NIC interventions
- 4170Hypervolemia Management
- 4120Fluid Management
- 4130Fluid Monitoring
- 2080Fluid/Electrolyte Management
Linkages drawn from care plans published by health services, universities and nursing journals. Labels may vary depending on the NIC and NOC edition your facility uses.
Case study: Fluid volume overload in heart failure
Patient. Elena, 74, has heart failure and hypertension. She comes to the ED because her legs have been swelling for a week and for the last two nights she hasn't been able to sleep lying down. She ate salty food at a family celebration and stopped her diuretic "so I wouldn't have to keep looking for a bathroom."
Assessment
- Weight 71.5 kg; at her last clinic visit, 6 days ago, she weighed 68 kg.
- 2+ pitting edema in both legs up to the knees.
- Jugular venous distension with the head of the bed at 45°.
- Bilateral basilar crackles; respiratory rate 24 breaths/min and SpO2 92%.
- Blood pressure 158/94 mmHg and heart rate 96 bpm.
- Positive fluid balance of 900 mL in the first 24 hours after admission.
- Creatinine and potassium within normal limits.
Nursing diagnosis
Excessive fluid volume related to sodium intake above the prescribed limit and skipped diuretic doses as evidenced by 3.5 kg weight gain in 6 days, 2+ pitting edema to the knees, JVD at 45°, bilateral basilar crackles and a positive fluid balance of 900 mL in 24 hours.
Goal
Within 72 hours, Elena loses at least 2 kg, edema decreases to 1+ and she sleeps with the head of the bed at 30° without dyspnea.
Interventions
- Daily weight before breakfast on the same scale and strict I&O.
- Give the prescribed diuretic and monitor urine output, blood pressure, potassium and creatinine.
- Semi-Fowler's position and lung auscultation every shift.
- Plan the ordered fluid restriction across the day together with her.
- Teach her, with her granddaughter, about high-sodium foods and how to adjust her diuretic timing when she goes out.
Evaluation
At 72 hours she weighs 69 kg, edema is 1+ at the ankles and her lungs are clear. She sleeps with the head of the bed at 30°. The diagnosis stays active until she reaches her dry weight, and ineffective health self-management is added to work on her home plan before discharge.
How it differs from similar diagnoses
- Risk for excessive fluid volume (00370): Risk for excessive fluid volume: no overload yet, but factors are present that point toward it.
- Inadequate fluid volume (00421): Inadequate fluid volume: the opposite problem, a fluid deficit. Watch for it when diuretic-induced diuresis is very brisk.
- Risk for impaired fluid volume balance (00492): Risk for impaired fluid volume balance: the risk is an imbalance in either direction, for example during major surgery.
- Decreased activity tolerance (00298): Decreased activity tolerance: often accompanies fluid overload in heart failure, but focuses on the response to exertion.
Common mistakes
- Relying on edema alone: daily weight and I&O are more reliable.
- Weighing on different scales or at different times.
- Writing "related to heart failure": that is the associated condition, not a factor nursing can modify.
- Leaving IV medication diluents out of the I&O.
- Elevating edematous legs without watching for worsening dyspnea.
Used in these conditions
Other diagnoses in the Hydration class
Domain 2, Nutrition. See every diagnosis in this domain.
Frequently asked questions
What is the NANDA code for excessive fluid volume?
00026, in Domain 2 (Nutrition), Class 5 (Hydration). It is still current in the 2024-2026 edition.
How much weight gain means fluid retention?
In heart failure, patients are usually taught to call if their weight goes up more than 2 kg in 3 days. The exact threshold is set by the provider for each patient.
Which nursing diagnosis do I use for heart failure now that decreased cardiac output was retired?
Excessive fluid volume is the current option when fluid overload is the main issue. You can add decreased activity tolerance or ineffective health self-management depending on your data. See the page on Decreased Cardiac Output (00029).
Is edema the same as excessive fluid volume?
No. Edema is a sign. A patient can have edema without volume excess, for example from venous insufficiency or low albumin, and in that case this diagnosis isn't the right fit.
Study material: the explanation, characteristics, factors, examples and case study on this page were written by our editorial team. The official text for Excessive fluid volume (00026) is in NANDA International Nursing Diagnoses: Definitions and Classification 2024-2026. This page does not replace clinical judgment or your facility's protocols.
Classification sources: NANDA-I 2024-2026, Thieme supplement · Elsevier summary of changes · Spanish edition table of contents · NOC/NIC: source 1. Reviewed November 2, 2026.