Final answer:
A patient with persistent tachyarrhythmia causing hemodynamic instability should be managed with urgent treatment to restore normal heart rhythm and medications to control symptoms. The underlying cause of the tachyarrhythmia should also be addressed.
Step-by-step explanation:
A patient with persistent tachyarrhythmia causing hemodynamic instability (hypotension, shock) should be managed with urgent treatment such as cardioversion or defibrillation to restore the heart's normal rhythm and prevent further complications.
In addition, medications may be used to control the arrhythmia and manage associated symptoms. These may include beta blockers, antiarrhythmic agents, or other medications depending on the specific type and cause of the tachyarrhythmia.
It is crucial to address the underlying cause of the tachyarrhythmia, which may involve repairing any heart damage, treating valve disorders, or managing other contributing factors.