What is polymorphic ventricular tachycardia?
Collapse Section. Catecholaminergic polymorphic ventricular tachycardia (CPVT) is a condition characterized by an abnormal heart rhythm (arrhythmia). As the heart rate increases in response to physical activity or emotional stress, it can trigger an abnormally fast heartbeat called ventricular tachycardia.
How do you treat polymorphic ventricular tachycardia?
Unstable polymorphic VT is treated with immediate defibrillation. The defibrillator may have difficulty recognizing the varying QRS complexes; therefore, synchronization of shocks may not occur.
What is the difference between monomorphic and polymorphic ventricular tachycardia VT?
Ventricular tachycardia should be described by type (monomorphic or polymorphic), duration (sustained or non-sustained) and heart rate — i.e. monomorphic VT non-sustained at a heart rate of 220 bpm or sustained polymorphic VT at a heart rate of 250 bpm.
Is polymorphic ventricular tachycardia life threatening?
Catecholaminergic polymorphic ventricular tachycardia (CPVT) is a rare condition. It causes an irregular heart rhythm that can be life threatening. It often shows up in childhood, but can show up later in life. The first sign is often fainting or near fainting during exercise or strong emotion.
What usually causes polymorphic ventricular tachycardia?
Polymorphic VT associated with a normal QT interval is most often caused by acute ischemia or infarction and may rapidly degenerate into VF. When polymorphic VT is associated with a long QT interval, the syndrome is called torsades de pointes (Figure 23-7).
What medications cause polymorphic ventricular tachycardia?
These include primarily the antiarrhythmic drugs (IA, IC, sotalol and bepridil), digitalis, sympathomimetics and phosphodiesterase inhibitors.
Which meds cause tachycardia?
List of Drugs that may cause Tachycardia (Fast Heart Rate)
- Aspirin and Oxycodone.
- Chlordiazepoxide and Clidinium Bromide.
What medications cause atrial flutter?
New-onset AF has been associated with cardiovascular drugs such as adenosine, dobutamine, and milrinone. In addition, medications such as corticosteroids, ondansetron, and antineoplastic agents such as paclitaxel, mitoxantrone, and anthracyclines have been reported to induce AF.