8 Hyperthyroidism Nursing Care Plans

Hyperthyroidism is the body running hot on too much thyroid hormone. Metabolism, heart rate, and the nervous system are all dialed up, and your job on the floor is to bring the system down safely while watching for the one complication that kills: thyroid storm. Lead with the heart (tachycardia and dysrhythmias drive the early risk), protect the eyes in Graves' disease, keep enough calories in a body burning them faster than it can eat, and teach the medication regimen that actually controls the gland.

What is Hyperthyroidism?

Hyperthyroidism is a metabolic imbalance from overproduction of the thyroid hormones triiodothyronine (T3) and thyroxine (T4). Graves' disease (also called Basedow's disease or thyrotoxicosis) is the most common form. Others include toxic adenoma, TSH-secreting pituitary tumor, subacute or silent thyroiditis, and some thyroid cancers.

Thyroid storm is a rare, life-threatening surge of hyperthyroidism. It can be precipitated by thyroid ablation (surgical or radioiodine), medication overdose, infection, or trauma, and it is a medical emergency.

Nursing Priorities

Monitor thyroid function and hormone levels. Give antithyroid drugs and beta-blockers as ordered. Track and manage the hypermetabolic symptoms (tachycardia, weight loss, agitation, heat intolerance) and stay alert for thyroid storm.

Nursing Assessment

Assess for tachycardia, increased appetite with unintentional weight loss, heat intolerance and excessive sweating, nervousness and irritability, hand tremors, fatigue or muscle weakness, insomnia, menstrual changes, frequent stools or diarrhea, goiter, fine brittle hair with thinning skin, and exophthalmos (bulging eyes) in Graves' disease.

Nursing Goals

The patient maintains adequate cardiac output (stable vital signs, palpable peripheral pulses, good capillary refill, usual mentation, no dysrhythmias), reports more energy and participates in desired activities, holds reality orientation, demonstrates stable weight with normal labs and no signs of malnutrition, reports anxiety at a manageable level, keeps eye membranes moist and free of ulceration, names measures to protect the eyes, and verbalizes the disease process, treatment needs, and complications well enough to start the necessary lifestyle changes.

Nursing Interventions and Actions

1. Managing Cardiac Symptoms

The hypermetabolic state raises oxygen and nutrient demand on the heart while altering rate, rhythm, conduction, venous return, and vascular resistance. Uncontrolled, it drives reduced cardiac output and can tip into heart failure.

Watch for severe thirst, dry mucous membranes, weak or thready pulse, poor capillary refill, decreased urine output, and hypotension. Rapid dehydration drops circulating volume and compromises cardiac output.

Note history of asthma or bronchoconstrictive disease, sinus bradycardia and heart blocks, advanced HF, or current pregnancy. These change the therapy choice. Beta-adrenergic blocking agents are contraindicated in several of them.

Watch for adverse effects of adrenergic antagonists: severe drop in pulse or BP, signs of vascular congestion or HF, cardiac arrest. Flags the need to reduce or stop therapy.

Investigate chest pain or angina. May reflect increased myocardial oxygen demand or ischemia.

Assess pulse and heart rate while the patient sleeps. Gives a more accurate read on tachycardia.

Auscultate heart sounds; note gallops and systolic murmurs. Prominent S1 and murmurs go with the forceful output of a hypermetabolic state; an S3 warns of impending cardiac failure.

Auscultate breath sounds; note adventitious sounds. An early sign of pulmonary congestion and developing cardiac failure.

Monitor BP lying, sitting, and standing; note widened pulse pressure. Orthostatic hypotension follows excessive peripheral vasodilation and decreased volume. Widened pulse pressure reflects increased stroke volume and decreased systemic vascular resistance.

Monitor temperature; keep the room cool, limit linens and clothing, give tepid sponge baths. Fever may exceed 104°F from excess hormone, worsening diuresis, dehydration, vasodilation, venous pooling, and hypotension.

Record I&O; note urine specific gravity. Vomiting, diarrhea, diuresis, and diaphoresis cause profound dehydration, concentrated urine, and weight loss.

Weigh daily. Push chair or bed rest; limit unnecessary activity. Activity raises metabolic and circulatory demand and can potentiate cardiac failure.

Monitor ECG; document dysrhythmias. Tachycardia beyond what fever alone explains reflects direct myocardial stimulation by thyroid hormone, and dysrhythmias compromise output.

Monitor central venous pressure (CVP) if available. A more direct measure of circulating volume and cardiac function.

Give supplemental O2 as indicated. Supports the increased metabolic demand and oxygen consumption.

Use a hypothermia blanket as indicated. Lowers uncontrolled hyperthermia (104°F and higher) to cut metabolic demand, oxygen consumption, and cardiac workload.

Give IV fluids as indicated. Rapid replacement restores volume but must be balanced against signs of cardiac failure and the need for inotropic support.

Give transfusions; assist with plasmapheresis, hemoperfusion, and dialysis. Rapidly depletes the extrathyroidal hormone pool in a desperately ill or comatose patient.

Prepare for possible surgery. Subtotal thyroidectomy (removal of five-sixths of the gland) may be the treatment of choice once a euthyroid state is achieved.

2. Preventing Fatigue and Enhancing Energy Balance

The hypermetabolic state and CNS hyperactivity drive exhaustion and weakness even at rest.

Monitor vital signs; note pulse at rest and with activity. Pulse runs high, and even at rest tachycardia up to 160 beats/min may be seen.

Note tachypnea, dyspnea, pallor, and cyanosis. Oxygen demand is already high, so activity raises the risk of hypoxia.

Provide a quiet, cool environment with decreased stimuli, soothing colors, and quiet music. Reduces stimuli that worsen agitation, hyperactivity, and insomnia.

Restrict activity; keep the patient in bed as much as possible. Counteracts the increased metabolism.

Offer comfort measures: touch or massage, cool showers. Sit the dyspneic patient in high Fowler's. Burns off nervous energy and promotes relaxation.

Offer calming diversions: reading, radio, television. Channels nervous energy constructively and may reduce anxiety.

Avoid topics that irritate the patient; discuss ways to respond to those feelings. CNS irritability makes the patient easily agitated and prone to outbursts.

Explain to family that the fatigue and emotional lability are physically based. Understanding the cause helps them respond with support rather than conflict.

Give sedatives such as phenobarbital (Luminal) and antianxiety agents such as chlordiazepoxide (Librium) as ordered. See Pharmacologic Support.

3. Maintaining Adequate Nutrition

The sped-up metabolism burns calories fast and depletes nutrients, so weight loss is common despite an increased appetite.

Monitor daily intake; weigh daily and report losses. Continued weight loss despite adequate calories may mean antithyroid therapy is failing.

Increase the number of meals and snacks; offer high-calorie, easily digested foods. Keeps intake high enough to match the rapid calorie expenditure.

Provide a balanced diet with six meals per day. Promotes weight gain. If the patient has edema, suggest a low-sodium diet.

Avoid foods that increase peristalsis and fluids that cause diarrhea. Increased GI motility causes diarrhea and impairs nutrient absorption.

Consult a dietitian for a diet high in calories, protein, carbohydrates, and vitamins. Ensures adequate intake and identifies appropriate supplements.

Give glucose, vitamin B complex, and small doses of insulin as ordered. Meets energy needs and corrects hypoglycemia; insulin controls serum glucose if elevated.

4. Reducing Anxiety and Providing Emotional Support

The pseudo-catecholamine effect of excess thyroid hormone overstimulates the sympathetic nervous system, producing nervousness, irritability, and anxiety.

Observe behavior for the level of anxiety. Mild anxiety shows as irritability and insomnia. Severe anxiety progressing to panic can produce a sense of impending doom, an inability to speak or move, shouting, or swearing.

Note palpitations, repetitive movements, hyperventilation, and insomnia. Increased beta-adrenergic receptor sites plus excess hormone produce catecholamine-excess signs even when norepinephrine and epinephrine levels are normal.

Stay with the patient; keep a calm manner. Acknowledge fear without taking inappropriate remarks personally. Shows the patient the environment is safe and prevents conflict during a stressful situation.

Explain procedures, surroundings, and any sounds the patient may hear. Accurate information reduces the distortion and confusion that feed anxiety.

Speak in brief statements with simple words. Attention span and concentration are reduced, limiting how much the patient can take in.

Reduce external stimuli: quiet room, soft music, dim lights, fewer people. Creates a therapeutic environment and recognizes that unit activity can raise anxiety.

Tell the patient and family that emotional control returns as drug therapy works. Reassures them the situation is temporary.

Give antianxiety agents or sedatives and monitor the effect. Reduces the effects of hyperthyroid secretion alongside the medical regimen.

Refer to counseling, social services, or pastoral care as needed. Ongoing support may be needed if the crisis forces lifestyle changes.

5. Maintaining Tissue Integrity (Eyes)

Impaired eyelid closure and exophthalmos expose the cornea, raising the risk of infection, corneal ulcers, and lost visual function.

Encourage dark glasses when awake and taping the eyelids shut during sleep as needed. Moisten the conjunctiva often with isotonic eye drops. Protects the cornea when the patient cannot fully close the lids.

Elevate the head of the bed and restrict salt intake if indicated. Decreases the tissue edema that aggravates exophthalmos.

Teach extraocular muscle exercises if appropriate. Improves circulation and keeps the eyelids mobile.

Let the patient discuss feelings about the change in appearance. Protruding eyes may feel unattractive; appearance can be improved with grooming and shaded glasses.

Prepare for possible surgery as indicated. Lids may be sutured shut temporarily to protect the corneas until edema resolves (rare), or orbital decompression may return the eye toward normal position.

6. Improving Thought Processes

Excess hormone on the brain and nervous system brings irritability, restlessness, poor concentration, and racing thoughts.

Assess the thinking process: attention span and orientation to place, person, and time. Gauges the interference with sensory processing.

Note behavior changes. May be hypervigilant, restless, extremely sensitive, tearful, or frankly psychotic.

Provide a quiet, cool, dimly lit room; limit procedures and personnel. Reduced stimuli decrease hyperactivity, CNS irritability, and hallucinations.

Reorient to person, place, and time as needed. Maintains awareness of reality.

Present reality concisely without challenging illogical thinking. Limits defensive reactions.

Provide a clock, a calendar, and a window; adjust lighting to simulate day and night. Gives continual orientation cues.

Encourage visits by family; provide support. Maintains socialization and orientation. Agitation or psychotic behavior can spark family conflict.

Provide safety measures: padded side rails, close supervision, soft restraints only as a last resort. Prevents injury in a hallucinating or disoriented patient.

Give sedatives, antianxiety agents, or antipsychotics as ordered. Reduces CNS hyperactivity and agitation to improve thinking.

7. Patient Education and Health Teaching

Teach the disease, its symptoms, and its complications, and drive home medication adherence, regular followup, stress management, rest, and a balanced diet.

Report fever, sore throat, or skin eruptions for medical evaluation. Early signs of a toxic reaction to thiourea therapy; prompt action prevents agranulocytosis.

Monitor CBC periodically. Catches leukopenia, thrombocytopenia, and agranulocytosis in patients on propylthiouracil or methimazole. Take these with meals to limit GI distress, and avoid OTC cough preparations, many of which contain iodine.

Identify stressors and triggers of thyroid crisis: personal, social, and job stress, infection, pregnancy. Psychogenic factors often drive onset and flares.

Review the disease process and future expectations. Gives the patient a base for informed choices, tailored to severity, cause, age, and complications.

Teach the signs of hypothyroidism and the need for continued followup. A treated hyperthyroid patient can develop hypothyroidism immediately after treatment or as long as 5 years later.

After radioactive iodine (I-131) therapy, tell the patient not to expectorate or cough freely, and stress repeat measurement of serum T4 levels. Saliva stays radioactive for 24 hours.

Discuss drug therapy: adherence, expected effects, and side effects. Antithyroid medication (as primary therapy or before thyroidectomy) requires a sustained regimen to suppress hormone production. Agranulocytosis is the most serious side effect; alternative drugs may be used if problems arise.

Check with the physician or pharmacist before any other prescribed or OTC drug. Antithyroid medications interact with many drugs and need monitoring.

Emphasize planned rest periods. Prevents fatigue and reduces metabolic demand; stamina returns as the euthyroid state is reached.

Review a nutritious diet and recheck nutrient needs over time. Avoid caffeine, red and yellow food dyes, and artificial preservatives. Once the hormone imbalance corrects, the diet must be readjusted to prevent excess weight gain, and stimulants should be limited.

Stress continued medical followup. Necessary to monitor therapy and prevent potentially fatal complications.

8. Pharmacologic Support

Thyroid hormone antagonists: propylthiouracil (PTU), methimazole (Tapazole). Definitive treatment or surgical preparation, but slow to act, so they will not relieve thyroid storm. Abrupt PTU withdrawal can precipitate a thyroid crisis. May interfere with RAI treatment and worsen disease in some people.

Beta-blockers: propranolol (Inderal), atenolol (Tenormin), nadolol (Corgard), pindolol (Visken). Control the thyrotoxic tachycardia, tremors, and nervousness, and are the first choice for acute storm. They slow heart rate and cardiac work by blocking beta-adrenergic receptors and blocking peripheral conversion of T4 to T3. If severe bradycardia develops, atropine may be required.

Strong iodine solution (Lugol's solution) or supersaturated potassium iodide (SSKI) PO. Surgical preparation to shrink and devascularize the gland, or to treat thyroid storm. Start 1 to 3 hours after the antithyroid drug to minimize hormone formation from the iodine. Mix iodide with milk, juice, or water and give through a straw to prevent GI distress and tooth discoloration.

RAI (Na131I or Na125I), per NRC radiopharmaceutical regulations. Treatment of choice for almost all Graves' disease because it destroys overactive gland tissue. Peak results take 6 to 12 weeks and may need several treatments, but a single dose controls hyperthyroidism in about 90% of patients. Contraindicated in pregnancy. Staff preparing or giving the dose must have their own thyroid burden measured, and contaminated supplies must be stored until decayed.

Corticosteroids: dexamethasone (Decadron). Provides glucocorticoid support, decreases hyperthermia, relieves relative adrenal insufficiency, inhibits calcium absorption, and reduces peripheral conversion of T4 to T3. May be given before thyroidectomy and stopped after surgery.

Digoxin (Lanoxin). Digitalization may be needed in patients with HF before beta-adrenergic blocking therapy can be safely started.

Potassium (KCl, K-Lyte). Replaces intestinal and renal K+ losses that otherwise cause dysrhythmias.

Acetaminophen (Tylenol). Drug of choice to reduce temperature and metabolic demand. Aspirin is contraindicated because it raises circulating thyroid hormone by blocking the binding of T3 and T4 to thyroid-binding proteins.

Sedatives and barbiturates. Promote rest, reducing metabolic demand and cardiac workload.

Furosemide (Lasix). Diuresis if HF occurs; also lowers calcium when neuromuscular function is impaired.

Muscle relaxants. Reduce the shivering that further raises metabolic demand in hyperthermia.

Methylcellulose drops. Lubricate the eyes and reduce the risk of corneal lesions.

Adrenocorticotropic hormone (ACTH), prednisone. Decrease rapidly progressive, marked inflammation.

9. Diagnostic and Laboratory Procedures

Thyroid function tests (TSH, free thyroxine, total or free T3) measure hormone levels and gland function. Potassium and calcium assess electrolyte balance.

Serum potassium. Hypokalemia from intestinal losses, altered intake, or diuretics causes dysrhythmias. In thyrotoxic paralysis (mainly in Asian men), replace cautiously, since rebound hyperkalemia can occur as the condition abates and potassium shifts out of cells.

Serum calcium. Elevation can alter cardiac contractility.

Sputum culture. Pulmonary infection is the most frequent precipitant of crisis.

Serial ECGs. Show electrolyte or ischemic changes from inadequate myocardial oxygen supply against high metabolic demand.

Chest X-rays. Cardiac enlargement and pulmonary congestion appear with increased circulatory demand and cardiac decompensation.