A nurse is reviewing the PT, aPTT, and INR laboratory values for a client who is experiencing an acute episode of disseminated intravascular coagulation (DIC). Which of the following laboratory results should the nurse expect?

The correct answer is a. Respiratory status.

Choice A: Respiratory Status

Reason: After the evacuation of a subdural hematoma, monitoring the respiratory status is crucial. This is because changes in respiratory patterns can indicate increased intracranial pressure (ICP) or brainstem compression, which are life-threatening conditions. Ensuring that the airway is clear and that the patient is breathing adequately is the top priority. Normal respiratory rate for adults is 12-20 breaths per minute.

Choice B: Temperature

Reason: While monitoring temperature is important to detect infections or other complications, it is not the immediate priority in the acute postoperative period following a subdural hematoma evacuation. Fever can indicate infection, but it is less likely to cause immediate life-threatening complications compared to respiratory issues.

Choice C: Intracranial Pressure

Reason: Monitoring intracranial pressure (ICP) is very important in patients with brain injuries. Normal ICP ranges from 5-15 mmHg. However, changes in respiratory status can be an early indicator of increased ICP. Therefore, while ICP monitoring is critical, ensuring the patient’s respiratory status is stable takes precedence.

Choice D: Serum Electrolytes

Reason: Serum electrolytes are important to monitor for overall metabolic stability and to detect imbalances that could affect neurological function. Normal ranges for key electrolytes are: Sodium (135-145 mEq/L), Potassium (3.5-4.5 mEq/L), and Chloride (80-100 mEq/L). However, these are not the immediate priority in the acute phase following surgery compared to respiratory status.

Choice A Reason: This is incorrect because the laboratory values are not within the expected reference range in a client who has DIC. DIC is a condition that causes abnormal activation of the clotting cascade, leading to widespread microthrombi formation and consumption of clotting factors and platelets. This results in bleeding complications and organ dysfunction.

Choice B Reason: This is correct because the laboratory values are prolonged in a client who has DIC. PT, aPTT, and INR are tests that measure the time it takes for blood to clot. PT measures the extrinsic pathway, aPTT measures the intrinsic pathway, and INR is a standardized ratio of PT. In DIC, these tests are prolonged because of the depletion of clotting factors and platelets.

Choice C Reason: This is incorrect because the laboratory values are not the same as the previous test values in a client who has DIC. DIC is an acute and dynamic condition that can change rapidly depending on the underlying cause and treatment. The laboratory values may fluctuate between normal, prolonged, or shortened depending on the balance between clotting and bleeding.

Choice D Reason: This is incorrect because the laboratory values are not decreased in a client who has DIC. Decreased laboratory values would indicate a shortened clotting time, which can occur in some cases of DIC when there is excessive clotting and thrombosis. However, this is not the typical finding in DIC, as most clients present with bleeding manifestations and prolonged clotting time.