This episode of the FlightBridgeED podcast focuses on acute decompensated left heart failure, especially in the transport setting. Dr. Mike Lauria frames these patients through the lens of the SCAI cardiogenic shock spectrum, with special attention to the earlier A and B stages that can be easy to underestimate. While the crashing, hypotensive cardiogenic shock patient often gets immediate attention, the episode emphasizes that patients with early decompensated heart failure may look “stable” because their blood pressure is still normal or high, even while they are beginning to slide toward shock.

The case centers on a 58-year-old man with coronary artery disease, hypertension, diabetes, atrial fibrillation, and known reduced ejection fraction who stops taking his antihypertensives and diuretics while traveling. After some dietary indiscretion and worsening fluid overload, he presents with dyspnea, hypoxia, pulmonary edema, crackles, pedal edema, and increased work of breathing. Although he is not hypotensive, his clinical picture suggests acute decompensated left ventricular failure with early cardiogenic shock physiology. Point-of-care ultrasound, chest X-ray, BNP, and clinical exam all support the diagnosis, but the episode stresses that crews often do not need to wait for labs to recognize a patient who is clearly congested and deteriorating.

Management focuses on reducing the burden on the failing left ventricle while supporting oxygenation and ventilation. In a hypertensive patient with pulmonary edema, nitroglycerin is highlighted as a key therapy because it reduces afterload and helps improve forward flow. Non-invasive positive pressure ventilation, whether CPAP or BiPAP, is presented not just as respiratory support but as hemodynamic support: by increasing intrathoracic pressure, it reduces venous return, decreases pulmonary congestion, and lowers the relative afterload faced by the left ventricle. The episode also emphasizes that crews should raise EPAP/PEEP when the goal is increasing mean airway pressure, and should coach anxious patients through NIV rather than reflexively sedating them.

Volume management and inotropic support round out the treatment strategy. If the patient is volume overloaded and not hypotensive, loop diuretics are appropriate, especially for longer transports, and doses should be meaningful rather than overly timid. If ultrasound or clinical assessment suggests reduced cardiac output despite adequate or elevated blood pressure, low-dose dobutamine may help improve forward flow. However, if the patient begins to transition from SCAI stage B into stage C cardiogenic shock, crews should reassess immediately: stop vasodilators, consider vasopressors or epinephrine, continue positive pressure ventilation when appropriate, repeat the ECG, and communicate the deterioration clearly to the receiving team.

Key Points

• Acute decompensated heart failure can represent early cardiogenic shock even when the patient is not hypotensive.
• Hypertensive pulmonary edema is often an afterload problem; nitroglycerin can be a powerful tool to reduce afterload and improve forward flow.
• CPAP and BiPAP are not just oxygenation tools; they also provide hemodynamic support for a failing left ventricle.
• Avoid sedating patients simply because they are anxious on NIV; coach them, start with tolerable pressures, and increase support as they adjust.
• If a heart failure patient deteriorates from SCAI stage B to stage C, reassess the cause, stop vasodilators, consider pressors/inotropes, repeat the ECG, and update the receiving facility.