Suction Flow and Reservoir Levels Driving Microemboli During Cardiopulmonary Bypass

The Effect of Surgical Field Suction Flow Rate and Venous Reservoir Levels on Gaseous Microemboli Transmission

March 17, 2026 No Comments

This in vitro study investigated how suction flow rate and venous reservoir level influence gaseous microemboli (GME) during cardiopulmonary bypass. Using a mock CPB circuit with bovine blood, higher suction speeds and lower reservoir levels significantly increased GME transmission. The interaction between these variables was strongest at the venous line, while arterial filtration reduced but did not eliminate emboli.

Dry Venous Line Initiation and Microemboli Formation in Cardiopulmonary Bypass

Initiating Cardiopulmonary Bypass Using a Dry Venous Line: Implications and Analysis

March 17, 2026 No Comments

This experimental study evaluated the effects of initiating cardiopulmonary bypass (CPB) with a dry venous line using vacuum-assisted venous drainage (VAVD). Researchers compared gaseous microemboli (GME) production with traditional primed venous lines. Results showed significantly higher GME counts and volumes with dry venous lines, particularly at higher vacuum pressures and instant initiation. Lower vacuum levels and delayed initiation reduced GME generation.