The nurse is assisting with the intubation of a patient in respiratory distress who has just had an endotracheal tube (ETT) placed. What is the nurse's first action following placement of the ETT?

A. Echocardiogram results with an ejection fraction of 55%: An ejection fraction (EF) of 55% is within the normal range, indicating preserved systolic function. While some forms of heart failure, such as HFpEF (heart failure with preserved ejection fraction), can occur, a normal EF alone does not strongly suggest acute heart failure as the cause of shortness of breath.

B. BNP results of 155 pg/mL (reference range <100 pg/mL): Brain natriuretic peptide (BNP) is released in response to ventricular stretch and increased intracardiac pressures. A BNP of 155 pg/mL is elevated, supporting a cardiac etiology of dyspnea, such as acute or chronic heart failure. BNP is a sensitive and specific biomarker for distinguishing heart failure from other causes of shortness of breath.

C. EKG results of sinus rhythm with occasional premature ventricular contractions (PVCs): Sinus rhythm with occasional PVCs does not indicate heart failure. While arrhythmias may coexist with heart failure, this finding alone does not explain the patient’s dyspnea or support a heart failure diagnosis.

D. ABG result with a PaCO2 of 30 mmHg (reference range 35-45 mmHg): A low PaCO2 reflects hyperventilation, which may be a compensatory response to hypoxia or pulmonary pathology. While it provides information on respiratory status, it is nonspecific and does not directly indicate heart failure as the underlying cause of dyspnea.

A. Remove the in-line suction system and use a sterile tracheostomy suctioning catheter: Removing the closed in-line suction system is unnecessary and breaks sterility. The closed system is designed to allow suctioning without disconnecting the ventilator, minimizing infection risk and oxygen desaturation.

B. Place the in-line suction catheter into the ET tube and suction for 10 seconds: Suctioning before assessing the patient could cause unnecessary hypoxia, trauma, or arrhythmias. The nurse must first determine the need for suctioning based on clinical assessment and oxygenation status.

C. Disconnect the patient from the ventilator and oxygenate with the bag valve mask: Disconnecting the ventilator is not indicated when using a closed in-line suction system. The closed system allows suctioning without loss of positive pressure or oxygenation, which prevents hypoxemia.

D. Assess the patient’s respiratory status and oxygen saturation before suctioning: The first step is to evaluate the patient’s respiratory condition, including auscultation, respiratory rate, work of breathing, and SpO₂. This assessment ensures suctioning is indicated, identifies any potential complications, and allows for safe and effective removal of secretions.