Description

• Pathological decrease in the pulse wave amplitude and systolic blood pressure > 10 mm Hg during inspiration
  • Decrease of intrathoracic pressure during inspiration �?expansion of vena cava and right atrium �?�?venous return �?�?RV filling
  • �?Pericardial compliance (e.g., due pericardial rigidity in constrictive pericarditis) �?�?bowing of the ventricular septum into the left ventricle �?�?LV ejection volume �?�?systolic blood pressure

Causes

• Constrictive pericarditis
• Cardiac tamponade
• Severe obstructive airway disease (asthma, COPD)
• Obstructive sleep apnea
• Croup