Pulseless ventricular tachycardia underlying causes include which of the following?

Pulseless ventricular tachycardia underlying causes include which of the following?

• A. Asthma
• B. Dyslipidemia
• C. Heart disease or damage (as from myocardial infarction)
• D. Dehydration

Answer: (C)

Pulseless ventricular tachycardia occurs when the heart’s electrical system is disrupted by diseased or damaged heart tissue that can sustain a rapid, disorganized ventricular rhythm. The most direct and common underlying cause is heart disease or prior damage such as from a myocardial infarction, which leaves scar tissue and conduction abnormalities that set up a reentrant circuit and promote VT. Asthma is a lung condition and does not create the electrical substrate for VT. Dehydration can cause tachycardia from reduced preload but does not typically produce a sustained, pulseless ventricular rhythm. Dyslipidemia increases long-term risk by promoting coronary disease, but it’s not an immediate cause of pulseless VT—the acute substrate usually comes from heart damage like that from an MI.

Pulseless ventricular tachycardia occurs when the heart’s electrical system is disrupted by diseased or damaged heart tissue that can sustain a rapid, disorganized ventricular rhythm. The most direct and common underlying cause is heart disease or prior damage such as from a myocardial infarction, which leaves scar tissue and conduction abnormalities that set up a reentrant circuit and promote VT. Asthma is a lung condition and does not create the electrical substrate for VT. Dehydration can cause tachycardia from reduced preload but does not typically produce a sustained, pulseless ventricular rhythm. Dyslipidemia increases long-term risk by promoting coronary disease, but it’s not an immediate cause of pulseless VT—the acute substrate usually comes from heart damage like that from an MI.