Final answer:
The statement is true; cardioversion is contraindicated for sinus tachycardia, which is usually due to external factors responding to physiological stressors.
Step-by-step explanation:
The statement that cardioversion is contraindicated for sinus tachycardia is true. Sinus tachycardia is a type of tachycardia where a resting patient's heart rate is elevated over 100 beats per minute, and it often occurs in response to physiological stressors like fever, anemia, exercise, blood loss, or hyperthyroid conditions.
It is usually a result of external factors such as metabolic disorders, endocrine system pathologies, electrolyte imbalances, or acute stress, rather than a primary electrical issue that requires correction with cardioversion. Cardioversion is a medical procedure that is used for arrhythmias that involve aberrant electric conduction paths within the heart.
The treatment of sinus tachycardia focuses on addressing the underlying cause, not on correcting the heart rhythm itself through procedures like cardioversion. Therefore, instead of cardioversion, a more appropriate treatment approach may include managing the causative condition and may involve the use of medications, lifestyle adjustments.