When caring for a patient who has shock, which assessment finding will be of greatest concern to the nurse?

A. Erythrocyte count: The red blood cell count reflects oxygen-carrying capacity and anemia but does not indicate platelet destruction or immune-mediated reactions. HIT specifically affects platelets, so monitoring erythrocytes would not detect this complication.

B. Fibrinogen degradation products: Fibrinogen degradation products (FDPs) are elevated in disseminated intravascular coagulation or significant clot breakdown. While they reflect fibrinolytic activity, they are not specific or sensitive for heparin-induced thrombocytopenia.

C. Activated partial thromboplastin time (aPTT): Although aPTT is used to monitor therapeutic anticoagulation during heparin infusion, frequent platelet counts are the most direct laboratory marker for HIT. Monitoring aPTT ensures the patient is within the therapeutic range, but detection of a sudden drop in platelet count is crucial for early recognition of HIT.

D. Prothrombin time (PT): PT evaluates the extrinsic coagulation pathway and is primarily used to monitor warfarin therapy. It is not sensitive to heparin therapy or the development of HIT, which involves immune-mediated platelet activation and thrombocytopenia rather than changes in PT.

Rationale for Correct Answers:

• Notify the provider: The client’s sudden change in level of consciousness, restlessness, irritability, and new headache after receiving alteplase indicates a potentially serious complication. Immediate notification of the healthcare provider is critical to ensure prompt evaluation, possible imaging, and interventions to prevent further neurological deterioration.
• Increased intracranial pressure: The new neurological symptoms, decreased responsiveness, irritability, and headache, suggest rising intracranial pressure (ICP), likely secondary to cerebral edema following ischemic stroke and thrombolytic therapy. Increased ICP can compromise cerebral perfusion and oxygenation, leading to rapid neurological decline. Early recognition and intervention are essential to prevent permanent damage or herniation.

Rationale for Incorrect Answers:

• Encourage the client to rest quietly: This delays emergency intervention. The symptoms indicate possible intracranial bleeding, not simple fatigue.
• Document the findings and continue routine monitoring: Routine monitoring is inappropriate when there is a sudden neurologic change after thrombolytic therapy. This is not stable, it is a potential life-threatening complication.
• Hypoglycemia: This can cause altered LOC, but there is no evidence in the scenario suggesting low blood glucose. Additionally, the new severe headache strongly suggests increased ICP.
• Anxiety: This does not cause decreased level of consciousness or focal neurologic decline.