How is sinus tachycardia typically treated?

Sinus tachycardia is a condition characterized by an increased heart rate originating from the sinus node, typically over 100 beats per minute, while maintaining a normal rhythm and P wave morphology. The treatment primarily focuses on addressing the underlying cause rather than simply aiming to lower the heart rate.

Administering oxygen may be considered supportive if the tachycardia results from hypoxia or respiratory distress. However, the first-line treatment often involves correcting any precipitating factors, such as dehydration, anemia, or fever. In more stable scenarios where there’s no immediate threat to cardiovascular stability, monitoring and reassurance may be the initial steps taken.

The use of beta-blockers is common for managing certain arrhythmias and conditions where you want to control the heart rate, but it's essential to identify if the sinus tachycardia is a physiological response to stress or other underlying issues before using these agents.

Defibrillation and cardioversion are typically reserved for life-threatening arrhythmias, specifically those that are not stable, such as ventricular tachycardia or atrial fibrillation with rapid ventricular response, rather than for sinus tachycardia itself, which is usually a benign condition in many contexts.

Therefore, while oxygen can be beneficial in specific