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Table 1 Components of the standard Hammersmith mCPB circuit

From: Miniaturized cardiopulmonary bypass: the Hammersmith technique

Prime Volume

134 ml (with ante grade and retrograde priming)

Foreign surface area

Oxygenator – 1.1 m2 *

 

VARD – 0.0105 m2 *

 

Soft Shell Bag 0.0860 m2 *or Midi Card – 0.0535 m2 *

 

Total – 1.301 m2 (1.268 m2)

 

Tubing – 0.0747 m2

 

Arterial line Filter – 0.0300 m2 (D733, Low Prime Sorin group)

Pre Bypass Filter (0.5 μm filter within the arterial-venous sash (Siever, [Sorin group])

 

3/8 Arterial and Venous lines

Air interface

100 ml in Midi Card – 8.14 × 10-4 m2 *

Air handling

Air free venting as standard

2× ¼ polyvinylchloride lines to act as an aortic root and Left Ventricular

 

No air in soft shell bag

 

Continuous communication with surgeon

Safety features

VARD *

 

Ramp Down function

 

Electronic clamp

Cell saving device

Dideco Electra [Sorin group, Italy]

  1. * See Figure 1 for details; VARD Venous Air Removal Device.