system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
"a" wave in JVP indicates:
assistant
The correct answer is  A wave: Arc positive waves due to distention producedby right atrial contraction Large a waves: Indicate atrium is contracting against increased resistance tricuspid stenosis, pulmonary stenosis, pulmonary hypertension.
Cannon S waves
Regularly: During junctional rhythm. Irregularly: complete Heart Block. Absent a waves: Atrial Fibrillation