Atrial Tachycardia is commonly associated with which severe outcomes?

• A. Pulmonary edema
• B. Stroke
• C. Hyperkalemia
• D. Hypotension

Answer: (A)

Rapid atrial tachycardia, when the heart is beating very quickly, shortens the time available for ventricular filling. That drop in diastolic filling reduces stroke volume and overall cardiac output. In the setting of high heart rate, the left-sided pressures rise, and blood backs up into the lungs, producing pulmonary edema. This hemodynamic consequence—acute left-sided congestive failure with pulmonary edema—is a common and serious outcome of sustained AT, especially in patients with some underlying cardiac dysfunction.

Stroke is more typically linked to atrial fibrillation or flutter due to thrombus formation in the atria from stasis, not directly from AT. Hyperkalemia isn’t a direct result of atrial tachycardia, and while hypotension can occur with rapid rhythms, pulmonary edema best explains the severe, commonly observed consequence in this context.