Korean J Anesthesiol.  1992 Apr;25(2):433-435. 10.4097/kjae.1992.25.2.433.

Occurrence of Hypercarbia due to a Defective Unidirectional Valve

• Kim EH
• Chung TH

• KMID: 2240598
• DOI: http://doi.org/10.4097/kjae.1992.25.2.433

Abstract

Hypercarbia can occur in spite of adequate ventilation if removal of carbon dioxide from the inspired gases is inadequate. Neither blood pressure nor heart rate is a reliable indicator of hypercarbia. A 53-year old male, ASA physical status II with mild hypertensive patient underwent primary repair because of rotator cuff tear of the shoulder. Anesthesia was induced with thiopental-succinylcholine and maintained with pancuronium- Halothane-N2O-O2 in a semiclosed circle system. We report occurrence of hypercarbia due to replacement with an incorrect unidirectional valve which is too small to function properly.

Keyword

Hypercarbia; Unidirectional valve; Semiclosed circle system

MeSH Terms

Anesthesia
Blood Pressure
Carbon Dioxide
Gases
Heart Rate
Humans
Male
Middle Aged
Rotator Cuff
Shoulder
Ventilation
Carbon Dioxide
Gases