Task: Answer Verification
Input (English): Question: Does shortening of cardiopulmonary resuscitation time before the defibrillation worsen the outcome in out-of-hospital VF patients?
Answer: In patients with out-of-hospital-witnessed VF, sufficient CPR before the first defibrillation is considered to improve the neurologic outcome in comparison to the performance of immediate defibrillation.
Output (English): yes