1. Intraaortic balloon pumping in children
Clement Akomea-Agyin, Nand K Kejriwal, Roger Franks, Peter Driscoll Booker, Marco Pozzi, MD 
The Annals of Thoracic Surgery 
Volume 67, Issue 5, Pages (May 1999)
DOI: /S (99)

2. Fig 1
Arterial wave form of patient 2 at the start of intraaortic balloon counterpulsation as augmentation is reduced, though artificially quickly, from maximum (left) to minimum (right). Although suprasystolic augmentation is not achieved, the ‘area under the curve’ diminishes markedly.
The Annals of Thoracic Surgery  , DOI: ( /S (99) )

3. Fig 2
Arterial wave form of patient 11 with IABP in 1:1 (left) and 1:2 (right) frequency. Suprasystolic diastolic augmentation is achieved as well as a lowered aortic end-diastolic pressure [‘presystolic dip’] (arrows).
The Annals of Thoracic Surgery  , DOI: ( /S (99) )