Final answer:
The dosage of cardioversion in a patient with unstable tachycardia is determined based on multiple factors, including the type of arrhythmia, the patient's condition, and previous treatments. The future drugs of choice depend on the underlying cause of tachycardia.
Step-by-step explanation:
In a patient with unstable tachycardia, the dosage of cardioversion is determined based on several factors, including the type of arrhythmia, the patient's underlying medical condition, and the response to previous treatments. The specific dosage may vary depending on the situation, but it is typically calculated using the patient's weight, heart rate, and other clinical parameters.
The future drugs of choice for the patient will depend on the underlying cause of the tachycardia and any associated conditions. For example, if the tachycardia is caused by atrial fibrillation, anticoagulant medications such as warfarin or direct oral anticoagulants may be prescribed to prevent blood clots. Other medications, such as beta blockers or calcium channel blockers, may be used to control heart rate and rhythm.