Which of the following can be a cause of paroxysmal supraventricular tachycardia?

Paroxysmal supraventricular tachycardia (PSVT) is a condition characterized by episodes of rapid heart rate originating above the ventricles. One significant cause of PSVT is alcohol consumption. Acute alcohol intake can lead to rhythm disturbances due to its effects on the autonomic nervous system and potential myocardial irritation, which can trigger premature atrial contractions and ultimately facilitate the onset of PSVT.

Alcohol affects cardiac conduction through several mechanisms, including alterations in ion channel function and changes in heart rate variability. Furthermore, heavy or binge drinking can lead to alcohol-induced arrhythmias, making it a recognized trigger for paroxysmal supraventricular tachycardia episodes.

In contrast, other causes such as hypothyroidism, while they can lead to broader cardiac issues, are not directly associated with the mechanisms leading to the acute presentation of PSVT. Electrolyte imbalances can be a contributing factor but are more commonly related to other types of arrhythmias. Myocardial infarctions may cause arrhythmias as well, but they typically present as more sustained forms of tachycardia or ventricular arrhythmias rather than episodes of paroxysmal supraventricular tachycardia. Thus, alcohol consumption stands