pH-stat management
Pronunciation: PEE-aych stat MAN-ij-ment
A blood gas management strategy during hypothermic cardiopulmonary bypass where pH is maintained at 7.40 regardless of temperature by adding CO2.
Full Definition
pH-stat management is a blood gas management strategy used during hypothermic cardiopulmonary bypass procedures where arterial pH is maintained at 7.40 (temperature-uncorrected) by adding carbon dioxide to the oxygenator gas flow. This approach contrasts with alpha-stat management and is preferred for pediatric cases and procedures requiring deep hypothermic circulatory arrest. The strategy aims to optimize cerebral blood flow distribution during cooling phases. Medical editors must distinguish this from alpha-stat management in procedural documentation and research manuscripts.
Usage
Usage note: Always hyphenate when used as a compound modifier; distinguish from alpha-stat in comparative contexts.
In Context
- "The surgical team employed pH-stat management during the cooling phase to optimize cerebral perfusion in the pediatric patient." — operative report
- "Studies comparing pH-stat versus alpha-stat management show different outcomes in neurocognitive function post-surgery." — research publication