Related Experiment Videos
[Evaluation of cross circulation in conjoined twins]
M Toyoshima1, T Fujihara, K Hiroki
1Department of Anesthesiology, Kanagawa Children's Medical Center, Yokohama.
Masui. the Japanese Journal of Anesthesiology
|September 1, 1993
Summary
Evaluating cross-circulation in conjoined twins revealed rapid hemoglobin equalization after hemorrhage but delayed drug effects. Careful anesthetic management is crucial for surgical separation.
Area of Science:
- Pediatric Surgery
- Neonatal Physiology
- Conjoined Twin Research
Background:
- Conjoined twins present unique physiological challenges, particularly regarding shared circulation.
- Preoperative assessment of cross-circulation is vital for surgical planning and patient safety.
Observation:
- Diagnostic imaging (CT, MRI, echography) revealed partial pericardial and sternal communication, and liver union.
- Indigo carmine and radionuclide angiography indicated shared circulation, while SCC and isoflurane did not show immediate transfer.
- Acute hemorrhage in one twin led to rapid, equal hemoglobin decrease in both.
Findings:
- Cross-circulation is demonstrable through physiological responses like hemoglobin changes after hemorrhage.
- Pharmacokinetic studies suggest differential rates of substance transfer between twins, with intravenous drugs having delayed effects.
Implications:
- Findings underscore the complexity of conjoined twin physiology and the need for individualized anesthetic strategies.
- This study highlights critical considerations for the safe surgical separation of conjoined twins, emphasizing careful monitoring of circulatory and anesthetic effects.