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The pressure waveform of coronary sinus in human hearts
1Division of Cardiovascular Surgery, Department of Surgery, Taipei Veterans General Hospital, 201, Sec. 2, Shih-Pai Road, Taipei 112, Taiwan. chhuang@vghtpe.gov.tw
Insights
The coronary sinus pressure waveform in human hearts, previously undescribed, shows three distinct peaks. This finding aids in differentiating coronary sinus from right atrial pressure for improved retrograde cardioplegia perfusion.
Area of Science:
- Cardiovascular Physiology
- Cardiac Surgery
Background:
- The pressure waveform of the coronary sinus in human hearts lacks detailed description.
- Accurate identification is crucial for retrograde cardioplegia perfusion techniques.
- Distinguishing coronary sinus pressure from right atrial pressure aids in cannulation.
Purpose of the Study:
- To characterize and identify the distinct pressure waveform of the human coronary sinus.
- To provide a basis for differentiating coronary sinus pressure from other cardiac pressures.
Main Methods:
- Catheterization of the coronary sinus under direct vision via right atriotomy in eight post-operative cardiac surgery patients.
- Simultaneous recording of coronary sinus and central venous line pressure waveforms with EKG.
- Comparative analysis of recorded pressure waveforms.
Main Results:
- The coronary sinus pressure waveform exhibited three prominent peaks.
- These peaks were more pronounced compared to the central venous line waveform.
Conclusions:
- The pressure waveform of the coronary sinus is distinguishable from the central venous line waveform.
- This distinction can assist in successful coronary sinus cannulation for retrograde cardioplegia perfusion.
Background:
The pressure waveform of coronary sinus in human hearts has never been well described. Retrograde cardioplegia perfusion has become a popular method of myocardial protection in recent years, and identification of the pressure waveform of the coronary sinus might help intubate the coronary sinus in retrograde cardioplegia perfusion by differentiating it from that of the right atrium. The purpose of this study is to identify the pressure waveform of the coronary sinus.
Methods:
We inserted a catheter into the coronary sinus under direct vision via a right atriotomy after completion of open heart operation in eight patients. The pressure waveforms of coronary sinus and central venous line, as well as the electrocardiogram (EKG), were recorded simultaneously after the patient was stable and weaned from the cardiopulmonary bypass. The recorded pressure waveforms of coronary sinus and central venous line were compared.
Results:
The pressure waveform of coronary sinus was found to have three peaks, more prominent than those of the central venous line waveform.
Conclusions:
The pressure waveform of coronary sinus could be distinguished from that of the central venous line. The difference might help coronary sinus cannulation for retrograde cardioplegia perfusion.