Timing
Physiological Effect
Waveform Features
Waveform
Late Deflation 1
- Deflation of the IAB after the onset of systole
- Increased myocardial oxygen consumption
- Prolonged isovolumetric contraction phase
- Increased afterload
- Reduction in cardiac output
- Diastolic augmentation may appear widened
- Assisted aortic end-diastolic pressure increased and may equal unassisted pressure
- Rate of systolic pressure rise is prolonged