A client with a spinal cord injury has urinary retention related to sensorimotor deficits. Which action should the nurse include in the client's plan of care (РOС)?

Rationale:
A. Obtain capillary blood samples for glucose every 2 hours: Monitoring blood glucose is important in critically ill clients, but increased urine output after a head injury is more suggestive of a possible neuroendocrine issue rather than hyperglycemia.

B. Measure oral secretions suctioned during last 4 hours: Suctioned oral secretions reflect airway management but do not provide information about renal function or causes of polyuria. This intervention does not help evaluate the sudden increase in urine output.

C. Obtain blood pressure and assess for dependent edema: While vital signs and fluid status are relevant, they alone do not determine the etiology of polyuria. Dependent edema is less likely in acute post-head injury scenarios causing high urine output.

D. Evaluate the urine osmolality and the serum osmolality values: Assessing urine and serum osmolality helps differentiate between causes of polyuria, such as diabetes insipidus, which can occur after head trauma. This evaluation provides objective data needed before reporting to the healthcare provider and guiding management.

Rationale:
A. Unstable hemodynamics: Performing a thoracentesis in a client with unstable blood pressure or cardiac output increases the risk of circulatory collapse. Fluid removal can further compromise venous return and perfusion, making hemodynamic stability a critical prerequisite for the procedure.

B. Coagulation deficiencies: Clients with coagulopathies, such as low platelet counts or elevated INR, face a high risk of bleeding into the pleural space or chest wall during thoracentesis. Correction of clotting abnormalities is necessary before proceeding to prevent hemothorax or uncontrolled bleeding.

C. Hypertension: Elevated blood pressure alone is not a contraindication for thoracentesis. It may require monitoring and control, but it does not inherently increase procedural risk unless accompanied by other cardiovascular instability.

D. Mechanical ventilation required: Clients on mechanical ventilation can safely undergo thoracentesis when carefully monitored, although it requires expert technique to prevent pneumothorax. The need for mechanical ventilation is not an absolute contraindication.

E. Tracheal deviation: Tracheal deviation is often a sign of mediastinal shift or large pleural effusion, not a reason to avoid thoracentesis. In fact, the procedure may help relieve pressure by removing excess pleural fluid.

F. Infection is incorrect because systemic infection alone is not a strict contraindication; however, infection at the puncture site would be a concern, but this option is too general.