Biphasic capnogram in a single-lung transplant recipient: a case report

Area of Science:

• Respiratory Physiology
• Anesthesiology
• Transplant Surgery

Background:

• Capnography provides real-time monitoring of carbon dioxide in airways.
• Lung transplantation presents unique physiological challenges.
• Interpreting capnographic waveforms is crucial for patient management.

Observation:

• An unusual biphasic capnogram was observed in a single-lung transplant recipient.
• This pattern deviates from typical capnographic waveforms.
• Only two prior reports documented similar biphasic patterns.

Findings:

• The biphasic capnogram is attributed to differential emptying between the native and transplanted lungs.
• This finding supports the hypothesis of asynchronous lung function post-transplant.
• Capnometry proves valuable in identifying subtle physiological changes.

Implications:

• This case underscores the importance of recognizing unusual capnographic patterns.
• Capnography serves as a vital monitoring tool for respiratory clinicians.
• Increased awareness of diverse capnographic findings can improve diagnostic accuracy in transplant patients.