A nurse is caring for a client who has a nasogastric tube. The nurse should monitor the client for which of the following findings?

A. A client who has aspiration pneumonia: Pneumonia leads to hypoventilation and carbon dioxide retention, which causes respiratory acidosis. It does not typically result in metabolic alkalosis since it affects gas exchange rather than acid-base balance at the metabolic level.

B. A client who is receiving continuous gastric suctioning: Prolonged removal of gastric secretions depletes hydrochloric acid, leading to an excess of bicarbonate in the blood and resulting in metabolic alkalosis. This is a common cause of alkalosis, along with excessive vomiting or diuretic use.

C. A client who is experiencing an opioid overdose: Opioids depress the respiratory system, reducing ventilation and causing carbon dioxide buildup, leading to respiratory acidosis. This does not cause metabolic alkalosis, as the issue originates in the lungs, not metabolism.

D. A client who has uncontrolled diabetes mellitus: Diabetic ketoacidosis results in excessive production of acidic ketone bodies, which lower blood pH and cause metabolic acidosis. The acid-base disturbance in diabetes is typically acidosis, not alkalosis.

• Tightness in chest that radiates to left arm: Classic symptom of acute coronary syndrome (ACS), including myocardial infarction (MI). Cardiac pain is often described as pressure, squeezing, or tightness and may radiate to the left arm, jaw, or back.
• Pain rated 7 on a scale of 0 to 10: Severe pain is a hallmark of an MI and suggests significant myocardial ischemia. Persistent or worsening chest pain should prompt urgent intervention.
• Nausea after breakfast: Nausea and gastrointestinal discomfort can be atypical signs of an MI, particularly in individuals with diabetes. The presence of nausea alongside chest pain raises suspicion for cardiac ischemia.
• Diaphoresis and shortness of breath: Sweating and dyspnea are common autonomic responses to myocardial ischemia. The body reacts to decreased cardiac output by activating the sympathetic nervous system, which results in these symptoms.
• Heart rate irregular and tachycardic: Irregular tachycardia suggests possible arrhythmias, which can be triggered by myocardial ischemia and infarction. Life-threatening dysrhythmias are a significant complication of an MI.
• Skin is cool to touch: Cool skin indicates decreased peripheral perfusion, which may result from reduced cardiac output due to myocardial dysfunction. It is a concerning sign of potential hemodynamic instability.

• Lungs clear to auscultation in all lobes: The absence of crackles or other abnormal lung sounds suggests that pulmonary congestion is not currently present.
• Bowel sounds are present in all 4 quadrants: Normal bowel sounds do not indicate any gastrointestinal pathology.
• +1 pedal pulses: Diminished pulses may suggest peripheral vascular disease but are not directly indicative of an acute cardiac event.
• Capillary refill less than 2 seconds: Normal capillary refill indicates adequate peripheral perfusion and does not suggest an immediate concern.