Vacuum-assisted venous drainage and gaseous microemboli in cardiopulmonary bypass

Shigang Wang, Akif Undar

Research output: Contribution to journalReview article

30 Citations (Scopus)

Abstract

When conventional gravity siphon venous drainage cannot achieve satisfactory venous drainage during minimally invasive cardiac and neonatal surgeries, assisted venous drainage techniques are needed to ensure adequate flow. One assisted venous drainage technique, vacuum-assisted venous drainage (VAVD), the aid of a vacuum in the venous reservoir, is now widely used to augment venous drainage during cardiopulmonary bypass (CPB) procedures. VAVD permits the use of smaller venous cannulae, shorter circuit tubing, and lower priming and blood transfusion volumes, but increases risk of arterial gaseous microemboli and blood trauma. The vacuum should be set as low as possible to facilitate full venous return, and real-time monitoring of gaseous microemboli in the arterial and venous line should be used to achieve the safest conditions. With current ultrasound technology, it is possible to simultaneously detect and classify gaseous microemboli in the CPB circuit. In this article, we summarize the components, setup, operation, advantages, and disadvantages of VAVD techniques and clinical applications and describe the basic principles of microemboli detectors, such as the Emboli Detection and Classification (EDAC) Quantifier (Luna Innovations, Roanoke, VA) and Bubble Counter Clinical 200 (GAMPT, Zappendorf, Germany). These novel gaseous microemboli detection devices could help perfusionists locate the sources of entrained air, eliminate hidden troubles, and minimize the postoperative neurologic impairments attributed to gaseous microemboli in clinical practice.

Original languageEnglish (US)
Pages (from-to)249-256
Number of pages8
JournalJournal of Extra-Corporeal Technology
Volume40
Issue number4
StatePublished - Dec 1 2008

Fingerprint

Vacuum
Cardiopulmonary Bypass
Drainage
Vascular Access Devices
Gravitation
Blood Volume
Embolism
Blood Transfusion
Nervous System
Thoracic Surgery
Germany
Air
Technology
Equipment and Supplies
Wounds and Injuries

All Science Journal Classification (ASJC) codes

  • Medicine (miscellaneous)
  • Health Professions (miscellaneous)
  • Cardiology and Cardiovascular Medicine

Cite this

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abstract = "When conventional gravity siphon venous drainage cannot achieve satisfactory venous drainage during minimally invasive cardiac and neonatal surgeries, assisted venous drainage techniques are needed to ensure adequate flow. One assisted venous drainage technique, vacuum-assisted venous drainage (VAVD), the aid of a vacuum in the venous reservoir, is now widely used to augment venous drainage during cardiopulmonary bypass (CPB) procedures. VAVD permits the use of smaller venous cannulae, shorter circuit tubing, and lower priming and blood transfusion volumes, but increases risk of arterial gaseous microemboli and blood trauma. The vacuum should be set as low as possible to facilitate full venous return, and real-time monitoring of gaseous microemboli in the arterial and venous line should be used to achieve the safest conditions. With current ultrasound technology, it is possible to simultaneously detect and classify gaseous microemboli in the CPB circuit. In this article, we summarize the components, setup, operation, advantages, and disadvantages of VAVD techniques and clinical applications and describe the basic principles of microemboli detectors, such as the Emboli Detection and Classification (EDAC) Quantifier (Luna Innovations, Roanoke, VA) and Bubble Counter Clinical 200 (GAMPT, Zappendorf, Germany). These novel gaseous microemboli detection devices could help perfusionists locate the sources of entrained air, eliminate hidden troubles, and minimize the postoperative neurologic impairments attributed to gaseous microemboli in clinical practice.",
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Vacuum-assisted venous drainage and gaseous microemboli in cardiopulmonary bypass. / Wang, Shigang; Undar, Akif.

In: Journal of Extra-Corporeal Technology, Vol. 40, No. 4, 01.12.2008, p. 249-256.

Research output: Contribution to journalReview article

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