Idiopathic Thrombocytopenic Purpura Nursing Care Management

ITP is an autoimmune destruction of platelets, and on the floor it comes down to bleeding risk. The immune system tags platelets, the spleen clears them, the count drops, and the patient bruises and bleeds. Your work is counting platelets, scanning for bleeding (especially intracranial), and bleed-proofing the environment. In children it usually follows a viral infection and resolves on its own.

What It Is

Idiopathic thrombocytopenic purpura (ITP), also called primary immune thrombocytopenic purpura and autoimmune thrombocytopenic purpura, is isolated thrombocytopenia with normal bone marrow and no other cause of low platelets. It produces easy or excessive bruising and bleeding. Children often develop it after a viral infection and usually recover fully without treatment.

Pathophysiology

ITP is primarily increased peripheral platelet destruction; most patients carry antibodies to specific platelet membrane glycoproteins. Relative marrow failure may contribute, since most patients show normal or diminished platelet production. Acute ITP often follows an acute infection and resolves spontaneously within 2 months. Chronic ITP persists longer than 6 months with no specific cause.

Statistics and Incidences

Average incidence in children is about 50 cases per 1,000,000 per year, with chronic refractory ITP adding roughly 10 cases per 1,000,000 per year. Danish and English studies put childhood ITP at about 10 to 40 cases per 1,000,000 per year; a Norwegian population-based study found 53 per 1,000,000 in children younger than 15 years; a Kuwait study reported a higher 125 cases per 1,000,000 per year. Mortality from hemorrhage is about 1% in children and 5% in adults. Spontaneous remission occurs in more than 80% of children. Peak prevalence is in children aged 2 to 4 years, and about 40% of all patients are younger than 10 years. In acute childhood ITP the sex distribution is roughly equal, males 52% and females 48%.

Causes

When the trigger for this immune reaction is unknown, the disorder is idiopathic (of unknown cause). In ITP, immune antibodies attach to platelets and mark them for destruction. The spleen recognizes the antibodies and removes the tagged platelets, leaving a lower-than-normal circulating count.

Clinical Manifestations

Petechiae appear as capillaries leak blood into the skin. Easy or excessive bruising (purpura) dominates: when megakaryocytes cannot raise production enough to maintain a normal circulating count, thrombocytopenia and purpura develop. Watch for hemorrhage, hemorrhagic bullae on mucous membranes, gingival bleeding, GI bleeding, retinal hemorrhages, and signs of intracranial hemorrhage with neurologic symptoms. The spleen is usually not enlarged; palpable spleen prevalence in ITP matches the non-ITP population (about 3% in adults, 12% in children). Spontaneous bleeding occurs when the platelet count is less than 20,000/mm3.

Assessment and Diagnostic Findings

Isolated thrombocytopenia on the CBC is the key finding; WBC count and hemoglobin are typically normal unless severe hemorrhage has occurred. On peripheral smear, truly giant platelets suggest congenital thrombocytopenia. A head CT is warranted if intracranial hemorrhage is a concern.

Medical Management

Treatment ranges from medications that boost the platelet count to splenectomy.

Prehospital care focuses on airway, breathing, and circulation: oxygen, control of severe hemorrhage, and IV fluids for hemodynamic stability, with airway control if there is a large intracranial hemorrhage. In the emergency department, life-threatening bleeding gets conventional critical care; in known ITP, high-dose parenteral glucocorticoids and IV immunoglobulin (IVIg), with or without platelet transfusions, are appropriate. Consult hematology to confirm the diagnosis or arrange disposition and followup care.

Pharmacologic Management

Glucocorticoids and IVIg are the mainstays. Glucocorticoids raise the platelet count in idiopathic and acquired autoimmune disorders. IVIg can temporarily raise counts in some children and adults; use it when a rapid, temporary rise is needed. Thrombopoietic agents directly stimulate marrow platelet production.

Nursing Management

Nursing Assessment

Review medications carefully, since drugs are a common cause of thrombocytopenia (drug-induced immune thrombocytopenia, DITP). On exam, address risk factors for increased bleeding (GI, CNS, or urologic disease, or an active lifestyle), which guide how aggressive management should be.

Nursing Diagnoses

• Risk for bleeding related to decreased platelet count.
• Risk for injury related to abnormal blood profile.
• Risk for ineffective protection related to altered kinesthetic perception.
• Risk for infection related to steroid-induced immune suppression.

Nursing Care Planning and Goals

• Patient or caregivers take measures to prevent bleeding and recognize signs that need immediate reporting.
• Patient has no bleeding (normal blood pressure, stable hematocrit and hemoglobin, coagulation profiles in desired ranges).
• Patient stays free of injury.
• Patient increases daily activity if feasible.
• Patient stays free of infection (normal vital signs, no signs or symptoms), with early recognition allowing prompt treatment.

Nursing Interventions

Prevent bleeding: review coagulation status as appropriate (platelet count, PT/INR, aPTT, fibrinogen, bleeding time, fibrin degradation products, vitamin K, activated coagulation time), and teach the at-risk patient and caregivers precautions to avoid tissue trauma or disruption of clotting.

Prevent injury: orient the patient to surroundings, keep the call light in reach and answer it immediately, avoid restraints (get an order if needed), and remove hazards such as razors, medications, and matches.

Prevent infection: wash hands and teach handwashing before patient contact and between procedures; encourage 2,000 to 3,000 mL of water per day unless contraindicated; use soft-bristled toothbrushes and stool softeners to protect mucous membranes; and if infection occurs, give the full prescribed antibiotic course even after symptoms resolve.

Evaluation

Goals are met when the patient or caregivers prevent bleeding and report warning signs promptly, the patient has no bleeding with stable blood pressure and hematocrit/hemoglobin, stays free of injury, increases daily activity if feasible, and stays infection-free with infection caught early.

Documentation Guidelines

Document baseline and subsequent assessment findings including signs and symptoms, cultural or religious restrictions and preferences, plan of care and people involved, teaching plan, responses to teaching and interventions, progress toward outcomes, and long-term needs with responsible parties.