The healthcare provider orders 5,000 units of heparin subcutaneously every 8 hours. The vial label reads heparin sodium 10,000 units/mL. How many milliliters should the nurse administer per dose? (DO NOT ROUND. LABEL CORRECTLY TO RECEIVE CREDIT)

A. Retractions on assessment:Retractions suggest increased respiratory effort and are a sign of respiratory distress. Their presence indicates that the airway is still obstructed or the patient is struggling to breathe, suggesting the bronchodilator has not been effective.

B. Chest tightness:Chest tightness is a subjective symptom often associated with bronchospasm or airway constriction. If it persists after bronchodilator use, it signals continued respiratory compromise and inadequate relief from the medication.

C. Use of accessory muscles:Use of accessory muscles indicates labored breathing and ongoing difficulty with ventilation. Effective bronchodilation should reduce the work of breathing and minimize reliance on these muscles.

D. SpO₂ increased from 87% to 94%:An increase in oxygen saturation indicates improved gas exchange and oxygenation, reflecting that the bronchodilator has successfully opened the airways. This is a measurable and objective sign of medication effectiveness.

A. Administer IV antibiotics:Antibiotics are essential for treating the underlying infection, but their effect on improving oxygenation is not immediate. While they target the pneumonia-causing pathogen, they do not directly support respiratory function in the acute phase.

B. Encourage oral fluids:Hydration helps thin secretions and supports overall recovery, but oral fluids alone will not rapidly improve oxygen saturation in a patient with hypoxemia. This intervention is supportive but not the most urgent or direct for addressing oxygenation.

C. Apply nasal cannula oxygen @ 2L/min via nasal cannula:With an oxygen saturation of 89%, immediate oxygen supplementation is necessary to improve tissue oxygenation and prevent hypoxia-related complications. Administering oxygen by nasal cannula is the most appropriate and timely action to increase oxygen delivery.

D. Monitor blood glucose levels:Blood glucose monitoring is important, especially in a diabetic patient with infection, but it does not address the respiratory compromise. It is a priority for metabolic management, not for improving oxygenation directly.