Influenza (Flu) Nursing Care Plans

Most flu patients never see your unit. The ones who do are the very young, the very old, the immunocompromised, and the previously healthy patient whose viral pneumonia turned the corner into ARDS. Your job splits four ways: keep the airway clear, control fever and pain, stop the virus from spreading on your floor, and keep the patient hydrated. Get those right and most patients recover on supportive care alone.

What is influenza?

Influenza (flu, grippe) is an acute inflammation of the nasopharynx, trachea, and bronchioles, with congestion, edema, and possible necrosis of those structures. It is a highly contagious airborne disease of the respiratory tract caused by three types of Myxovirus influenzae. It runs sporadically or in epidemics that peak in colder months; in the tropics it circulates year round. The WHO estimates 1 billion cases, 3 to 5 million severe cases, and 290,000 to 650,000 influenza-related respiratory deaths worldwide each year.

Presentation overlaps heavily with other viral upper respiratory infections: cough, fever, sore throat, myalgias, headache, nasal discharge, weakness and severe fatigue, tachycardia, and red, watery eyes. Diagnosis has traditionally been clinical, but rapid tests are now widely used. The gold standard for influenza A and B is viral culture of nasopharyngeal or throat samples.

Unless complications develop, influenza does not require hospitalization, and care centers on prevention and symptom relief.

Nursing Care Plans & Management

Nursing Problem Priorities

1. Manage respiratory dysfunction.
2. Manage fever and respiratory symptoms.
3. Control and prevent infection.
4. Correct fluid and electrolyte imbalance.

Nursing Assessment

Assess for these subjective and objective findings:

• Rhinorrhea (runny nose), irritating nonproductive cough, sputum production, hemoptysis
• Decreased or adventitious breath sounds
• Cyanosis, dyspnea, pulmonary edema
• Fever, weakness, diaphoresis, fatigue
• Leukopenia
• Erythema of the tonsils, soft and hard palate, and pharyngeal wall
• Abnormal chest X-ray
• Increased temperature, tachycardia, tachypnea
• Dry mucous membranes, dehydration, oliguria
• Seizure, changes in mentation
• Increased BUN and creatinine, electrolyte imbalances

Contributing factors include tracheobronchial and nasal secretions, increased peripheral airway resistance from drug therapy, pneumonia, viral inflammation, and hemorrhagic bronchitis.

Nursing Goals

The patient will regain and maintain a patent airway and baseline respiratory status, with clear breath sounds on auscultation and optimal air exchange.

Nursing Interventions and Actions

1. Promoting Effective Airway Clearance

Mucociliary clearance is the airway's frontline defense, trapping pathogens and moving them out. Influenza overwhelms that system with bronchial swelling, mucus oversecretion, and narrowed passages, so your interventions are aimed at keeping secretions moving and air exchanging.

Assess respiratory rate, depth, ease, accessory muscle use, and work of breathing. Changes range from minimal to extreme. Tachypnea, shallow respirations, and asymmetric chest movement show up early because moving the chest wall hurts and secretions are pooling.

Auscultate for wheezes, crackles, rhonchi, or decreased breath sounds. Wheezing comes from air squeezing past narrowed airways on expiration. Crackles signal consolidation or fluid. Decreased breath sounds point to alveolar collapse and poor air exchange in that field.

Monitor oxygen saturation by pulse oximetry. Notify the provider of readings below 90% or as prescribed. A reading of 90% correlates with a PaO2 of 60 mm Hg; below 60 mm Hg means hypoxemia and tracks with increased morbidity and mortality.

Check for pallor or cyanosis, especially nail beds and around the mouth. Cyanosis is a late and unreliable sign. It does not appear until roughly 5 grams of reduced hemoglobin per 100 mL of blood accumulates in the superficial capillaries.

Monitor cough and sputum: amount, color, character, and the patient's ability to expectorate. Yellow-to-green mucus suggests infection. Thick, tenacious secretions take more energy to clear and can obstruct the airway. Expect a nonproductive cough early that progresses, sometimes with pleuritic chest pain and dyspnea, as the infection evolves.

Monitor vital signs. Fever varies widely, from low grade around 100°F (37.7°C) to as high as 104°F. Tachycardia usually reflects hypoxia, fever, or both.

Assess skin and mucous membranes. Skin runs warm to hot with core temperature. A febrile patient with poor intake shows early volume depletion with dry skin.

Observe general appearance and strength. Some patients look acutely ill; others only mildly so. Eyes may be red and watery. Weakness and severe fatigue can keep the patient from normal activity, and some are bedridden.

Position the patient in high or semi-Fowler's. Upright positions improve lung function. FEV1 is higher when erect; recumbent positions limit expiratory volume and flow.

Turn the patient every 2 hours and as needed. Repositioning drains secretions and improves ventilation, lowering atelectasis risk.

Encourage early ambulation and aerobic activity as tolerated. Protocol-based mobilization speeds functional recovery and shortens length of stay. Progress from sitting at the edge of the bed to standing to walking with or without assistive devices.

Perform postural drainage and percussion as ordered. Gravity, percussion, and vibration shift secretions off the bronchial walls so the patient can cough them up. Use caution in older adults, whose fragile bones and skin may not tolerate intense percussion.

Encourage fluids, 3 to 4 liters per day unless contraindicated. Hydration thins secretions for easier clearance; warm fluids help most. Have the patient avoid very hot or very cold drinks, which can trigger cough spells, dyspnea, or bronchospasm.

Teach deep breathing and coughing every 2 hours, with chest splinting. Deep breathing expands the lungs and smaller airways, reverses atelectasis, and improves oxygenation. Coughing clears secretions; splinting cuts discomfort and an upright position makes the cough more forceful.

Suction as needed, or if oxygen desaturation appears. A weak or fatigued patient may not clear secretions, and suctioning can stimulate a cough or clear the airway mechanically.

For a weak cough, teach quad thrusts or mechanical insufflation-exsufflation (MIE). These boost expiratory pressure and assist cough in patients who cannot expectorate effectively.

Teach incentive spirometry. Visual feedback drives a deeper maximal inspiration. Have the patient run 5 to 10 repetitions: breathe in slowly, hold 2 to 3 seconds, exhale slowly, then cough at the end to clear sputum.

Encourage smoking cessation. Smoking increases mucus, constricts vessels, inflames the lung lining, and depletes airway macrophages and the mucociliary blanket.

Have the patient avoid crowds and anyone with an upper respiratory infection. An immunocompromised patient is vulnerable to transmission. Influenza A is generally more pathogenic than B; influenza C epidemics show up mostly in young children.

Place the patient on droplet precautions. Maintain droplet precautions for suspected or confirmed influenza for 7 days after onset or until 24 hours after fever and respiratory symptoms resolve, whichever is longer. Staff entering the room wear a facemask and remove it on leaving.

Administer antivirals as ordered. Start treatment as soon as possible for severe, complicated, progressive, or hospitalized cases, and for outpatients at risk for complications by age or comorbidity. Current options are oseltamivir, zanamivir, peramivir, and baloxavir marboxil.

Administer the influenza vaccine as prescribed. It becomes effective 10 to 14 days after administration and gives reasonable protection against the strains it covers. Effectiveness varies each season with how well the vaccine matches the circulating influenza A and B strains, so it is reformulated annually.

2. Improving Breathing Pattern

Influenza spreads in aerosols from coughs and sneezes. If secretory antibodies do not neutralize it, the virus invades airway and respiratory tract cells, driving cellular dysfunction and the systemic symptoms, including dyspnea and tachypnea, that follow inflammatory mediator release.

Monitor respiratory rate, rhythm, and character against baseline. Respiratory distress and shifting vital signs reflect physiologic stress or developing shock from hypoxia. In avian influenza, one review across four countries found progression to ARDS and respiratory failure in 70 to 100% of patients.

Monitor pulse oximetry. Oximetry tracks oxygenation and respiratory status changes. In severe influenza, expect hypoxemia and a widened alveolar-arterial gradient (above 35 mm Hg).

Auscultate breath sounds every 4 hours and as needed. Watch for new adventitious or decreased sounds. Older adults may show infiltrates in the interstitium and lower lung fields; findings range from a dry cough with clear lungs to rhonchi and focal wheezing.

Assess and treat pain. Pain limits respiratory effort and chest excursion, cutting ventilation and perfusion. Cough-related pleuritic chest pain is common, and any infection can spread to the pleura.

Stay calm and coach slower, deeper respirations. This helps the patient work through hypoxia-driven anxiety. Breathing may stop being automatic and require conscious effort.

Keep the patient in semi- or high-Fowler's as tolerated. Standing and sitting produce the highest lung volumes, greater elastic recoil, and stronger expiratory pressure, which raises peak expiratory flow and FVC.

Assist with incentive spirometry, nebulizers, and PEP devices as ordered. These prevent atelectasis. Flutter and Acapella devices combine positive expiratory pressure with airway oscillation to reduce collapse and clear mucus.

Perform chest physiotherapy, percussion, and postural drainage as ordered. Cupped hands or a palm cup over the affected lung shift secretions from the peripheral to the central airway for clearance.

Reposition every 2 hours and as needed. Evidence on the exact interval is thin, but every 2 to 4 hours helps reduce nosocomial pneumonia and atelectasis while mobilizing secretions.

Maintain isolation as ordered. Keep the patient on precautions for 7 days after onset or until 24 hours after fever and respiratory symptoms resolve, whichever is longer.

Teach the patient and family the isolation requirements. On transport outside the room, the patient wears a facemask and follows respiratory and hand hygiene. Before discharge, communicate the diagnosis and current precautions to post-hospital providers and transport staff.

Teach chest splinting with a pillow during cough. Supporting the chest and abdominal muscles makes coughing more effective and less painful. For the quad cough, the patient places hands below the diaphragm and pushes upward on exhalation.

Teach relaxation, guided imagery, and breathing exercises. These ease pain and anxiety and improve respiratory effort. Diaphragmatic breathing recruits the diaphragm instead of accessory muscles, reversing atelectasis and improving oxygenation.

Administer oxygen as ordered. Supplemental oxygen relieves distress from hypoxemia. A patient in respiratory failure may need bag-valve-mask support or intubation.

3. Managing Pain and Discomfort

Influenza hurts. Myalgias range from mild to severe, frontal or retro-orbital headache is common and usually severe, and a sore throat can last 3 to 5 days. The sore throat is often what brings the patient in.

Assess headache, sore throat, malaise, body weakness, muscle aches, and pain. These come from inflammation and elevated temperature. Muscle pain reflects the immune response to infection, and dehydration adds to it.

Assess vital sign changes. Pain drives an autonomic response: heart rate rises and blood pressure may climb slightly with severe headache and muscle discomfort.

Watch for irritability and sleep disturbance. These nonverbal cues signal the presence or degree of pain. Exhausted patients may still struggle to sleep through muscle discomfort, so help them find a comfortable position.

Provide a quiet, restful environment and schedule rest periods. Rest and sleep drive healing, balance metabolic demand, and improve coping with discomfort.

Apply warm baths or a heating pad to aching muscles. Warmth causes vasodilation and eases discomfort. Keep bath water lukewarm if the patient is febrile, and use heating pads carefully to avoid burns.

Apply a cool compress to the head. Wring out a cloth in cold water and lay it on the forehead, re-wetting it as it warms.

Provide backrubs as needed. Massage eases muscle aches and headaches and can lower cortisol, which otherwise weakens infection-fighting white cells.

Encourage warm-water gargles and throat lozenges. A sore throat is worst in the morning when the throat dries overnight. Lozenges or hard candy keep saliva flowing and the throat moist. For young children, use cold liquids and popsicles instead to avoid aspiration risk.

Increase fluid intake as tolerated. Influenza loses fluid through sweating, vomiting, diarrhea, and fever. Clear liquids replace those losses and support the immune system.

Teach deep breathing, relaxation, guided imagery, and massage. Nonpharmacologic methods redirect attention from pain, cut muscle tension, and can lower analgesic needs.

Teach proper acetaminophen use. Acetaminophen relieves mild to moderate pain and fever but is metabolized in the liver, so use it cautiously in liver dysfunction. Combine it with an opioid for severe pain.

Teach NSAID use and to avoid aspirin. NSAIDs are antipyretic, anti-inflammatory, and analgesic. Avoid acetylated salicylates such as aspirin, which carry bleeding and ulceration risk from their antiplatelet activity, especially with a history of gastric ulcers or platelet disorders.

Use a vaporizer or humidifier as approved. Dry air worsens symptoms, especially sore throat, by drying airway mucus and cutting clearance of pathogens. Keeping relative humidity between 40 and 60% reduces viral spread, eases throat pain, and improves sleep.

4. Managing Hyperthermia

A mild fever can help: it slows viral replication and sharpens host defenses. Push higher and the math flips, with cellular and tissue damage and rising metabolic demand outweighing the benefit. The job is to control fever without triggering shivering, which only raises temperature further.

Monitor temperature every 2 to 4 hours and as needed, using the same method each time. Consistency keeps the data comparable. Fever varies widely, from low grade around 100°F (37.7°C) to as high as 104°F (40°C).

Note shaking chills or profuse diaphoresis. Chills usually precede temperature spikes as the body resets to a higher set point, feels cold below it, and shivers to generate heat.

Monitor intake and output every 2 to 4 hours. This catches fluid shifts early. A febrile patient with poor intake shows mild volume depletion and dry skin.

Watch for seizures. High temperatures can trigger seizures through cortical hyperactivity and worsen tissue perfusion. Influenza A has been linked to acute encephalopathy with altered mental status, coma, seizures, ataxia, and abnormal CSF, MRI, and EEG findings.

Assess environmental temperature. Adjust room temperature and linens to hold a near-normal body temperature; an overly warm room adds heat the patient cannot shed.

Provide tepid sponge baths. These increase heat loss by evaporation and prevent the chilling that drives temperature up. Skip ice water and alcohol, which cause chills and skin dehydration.

Use a cooling blanket if other methods fail and the temperature is above 102.5°F (39.1°C). Cooling blankets remove heat by conduction. Cover the blanket to protect the skin, and monitor closely so the patient does not swing into hypothermia or start shivering.

Lower room temperature and remove extra blankets as warranted. Adjust linens to the patient's current temperature to help release excess heat.

Increase fluid intake to 3 to 4 liters per day unless contraindicated. Insensible losses rise about 10% for every 1 degree Celsius of temperature increase, which can dehydrate the patient. Use water, broth, or a commercial oral rehydration solution that replaces both fluids and electrolytes.

Perform evaporative cooling as indicated. This noninvasive method drops core temperature roughly 0.3°C per minute. Remove the patient's clothing, mist constantly with tepid (15°C) water, and run fans to circulate warm room air, monitoring temperature throughout.

Perform strategic ice packing as indicated. Often paired with evaporative cooling, ice packs in the groin and axillae lower core temperature about 0.02 to 0.03°C per minute. Remove them once the target temperature is reached.

Notify the provider if temperature does not respond to any measure. Refractory hyperpyrexia can cause permanent organ damage, including acute kidney injury, through oxidative stress and free radical production.

Teach the patient about cooling blanket use. Explain the temperature goal, how long it runs, and the signs of complications. Monitor closely, since an overly low temperature is also dangerous.

Teach medications, side effects, and symptoms to report. Acetaminophen can cause rash, hypersensitivity, nephrotoxicity, nausea, vomiting, constipation, and abdominal pain. NSAIDs affect the gastric mucosa and the renal, cardiovascular, hepatic, and hematologic systems.

Administer antipyretics as ordered. These act on the hypothalamus to lower temperature. Control fever in neutropenic or asplenic patients. Otherwise, weigh that fever increases neutrophil production and activity and the autodestruction of infected cells.

5. Promoting Optimal Fluid Balance

Influenza dehydrates patients of every age through insensible losses and poor intake. Primary viral pneumonia and secondary bacterial pneumonia can push it further into respiratory distress, acute lung injury, septic shock, and multi-organ failure.

Assess for increased or prolonged fever, tachycardia, and orthostatic changes. Fever raises metabolic rate and evaporative loss. Orthostatic blood pressure changes and rising tachycardia point to systemic fluid deficit.

Assess skin turgor and the moisture of the lips and tongue. These indirectly gauge fluid volume, though oral mucosa can dry from mouth breathing and supplemental oxygen alone.

Assess for nausea and vomiting. Children with H1N1 (swine flu) may have diarrhea and vomiting that drive dehydration.

Monitor intake and output, and note urine color and character. Decreasing output of concentrated urine with rising specific gravity signals dehydration and the need for more fluids.

Promote fluid intake to at least 3,000 mL daily. Estimate daily maintenance as: under 10 kg, 100 mL/kg; 10 to 20 kg, 1,000 mL plus 50 mL/kg for each kg over 10; over 20 kg, 1,500 mL plus 20 mL/kg for each kg over 20. Add maintenance fluid to the existing deficit.

Provide oral rehydration solution (ORS). Oral rehydration restores intravascular volume as effectively as IV therapy. Commercial solutions contain 2 to 3 g/dL of glucose, 45 to 90 mEq/L of sodium, 30 mEq/L of base, and 20 to 25 mEq/L of potassium.

Give ORS in small, frequent oral volumes; use a nasogastric tube if not tolerated. Small volumes minimize gastric distention and reflex vomiting; about 5 mL every minute is usually well tolerated. If vomiting persists, infuse ORS by NG tube temporarily.

Encourage complex carbohydrates, lean meats, fruits, and vegetables. Favor rice, wheat, potatoes, bread, and cereals; avoid fatty foods and simple carbohydrates.

Monitor serum electrolytes, BUN, and creatinine. Check sodium, since hyponatremia and hypernatremia need specific treatment. Potassium may be elevated and bicarbonate reduced with diarrheal losses; BUN and creatinine may rise with renal hypoperfusion.

Avoid antimotility and antidiarrheal agents in diarrhea. Loperamide and similar agents carry questionable efficacy and serious side effects, including lethargy, respiratory depression, and coma.

Administer IV fluids as needed. Obtain IV access and give a crystalloid bolus to support hemodynamic stability when intake is reduced or losses are excessive.

6. Providing Patient Education and Health Teaching

Annual vaccination cuts morbidity and mortality in high-risk patients, yet uptake stays low and misconceptions persist. In one study, only 67.4% of patients knew the flu could be prevented by vaccination. Clear communication is one of the highest-yield things you can do.

Assess the patient's understanding of the disease. Correct misconceptions and set a baseline for teaching. Vaccine misconceptions are a statistically significant driver of refusal.

Confirm the patient is willing and able to learn. A patient in too much pain or too ill will not absorb teaching. Respect the patient's right to choose their level of participation.

Review normal lung function and the pathology of the condition. Plain-language teaching builds understanding and cooperation with the treatment plan.

Assess for vaccine allergies. Some vaccines are made from a chicken embryo and are not for people hypersensitive to eggs. ACIP recommends Flublok for adults 18 years and older with egg allergy of any severity.

Keep teaching sessions short and the environment quiet. Sessions under an hour suit older adults, who may tire sitting and lose focus with distractions. Turn off the TV, close the door, and pull the curtain.

Teach influenza immunization. For high-risk patients and healthcare staff, recommend annual vaccination at the start of flu season. The vaccine is built on the prior year's virus and is usually about 75% effective. Poor uptake is a worldwide problem that calls for sustained education.

Explain possible vaccine adverse effects and to report them. These include injection-site discomfort, fever, malaise, and rarely, Guillain-Barre syndrome. Recommend the inactivated vaccine for women who will be in their second or third trimester during flu season. Anyone can report a suspected side effect to the Vaccine Adverse Event Reporting System (VAERS).

Teach the real severity of influenza. Patients routinely underestimate their own risk. Even a healthy person without antibodies is vulnerable, and the vaccine is available to anyone during flu season.

Teach tissue disposal and proper handwashing. Handwashing misconceptions also drive vaccine refusal. Poster-based education on cross-transmission, hand carriage, and hygiene has produced measurable gains in handwashing compliance among nurses and assistants.

Match teaching aids to the patient's abilities. Use large-font written materials for impaired patients. Aging can bring memory loss and sensory deficits, so teach slowly, repeat, add light for vision-impaired patients, and keep materials in their field of view.

Teach influenza types, outbreak timing, and prevention. Influenza runs every year, normally November through April, spread by direct contact and aerosol droplets. Older patients with comorbidities are especially prone and should avoid people with upper respiratory symptoms. Influenza C epidemics show up mostly in young children, and avian influenza spreads mainly through direct contact with infected birds.

Stress vaccination for everyone at risk. Give the vaccine around October before the season starts, through late winter. Vaccinating high-risk pregnant patients passes some immunity to newborns and lowers infant hospitalizations. The CDC recommends higher-dose and adjuvanted vaccines for adults 65 years and older.

Clarify treatment misconceptions. During the 2009 H1N1 pandemic, Sydney residents believed quarantine was more effective than the vaccine, and a study of Hispanic residents in New York City found a belief that influenza will not improve without medical intervention. Both underestimate the vaccine and overestimate the need for treatment.

Teach about antiviral drugs and when to seek care. Neuraminidase inhibitors act directly on viral proteins to reduce virulence. Use caution in patients with other respiratory disease or renal insufficiency.

• Oseltamivir phosphate (Tamiflu). Effective for influenza A and B. Give within 48 hours of symptom onset; the sooner, the better. It shortens illness by an average of 1.5 days and reduces symptom severity.
• Zanamivir (Relenza). Effective against influenza A and B; efficacy against avian influenza is not well established. Severe and even fatal bronchospasm has been reported. It is inhaled through a Diskhaler device.
• Baloxavir (Xofluza). A prodrug metabolized to baloxavir, given as a single oral weight-based dose for acute uncomplicated influenza in patients 5 years and older symptomatic for less than 48 hours, and for patients 12 years and older at high risk of serious complications.