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Anesthesia for patients with carcinoid syndrome
1Northwick Park and St. Mark's NHS Trust, Harrow, Middlesex, England.
International Anesthesiology Clinics
|January 28, 1998
Summary
Anesthetic management for carcinoid syndrome requires careful preoperative optimization and communication. Despite advances, predicting perioperative complications and mediator release remains challenging, necessitating vigilant monitoring and preparedness for crises.
Area of Science:
- Anesthesiology
- Endocrinology
- Oncology
Background:
- Carcinoid syndrome presents rare but complex challenges for anesthesiologists due to variable clinical manifestations and potential perioperative complications.
- Understanding the pathophysiology of carcinoid syndrome has improved, yet the precise effects of all peptide mediators remain incompletely understood.
- Preoperative symptom severity does not reliably predict the risk or type of intraoperative complications.
Purpose of the Study:
- To review the anesthetic management of patients with carcinoid syndrome.
- To highlight the importance of multidisciplinary communication and preoperative patient optimization.
- To discuss strategies for minimizing carcinoid mediator release and preparing for potential crises.
Main Methods:
- Review of current literature on carcinoid syndrome and its anesthetic implications.
- Discussion of diagnostic indicators, such as urinary 5-hydroxyindoleacetic acid (5-HIAA) levels, and their limitations.
- Emphasis on anesthetic techniques, pharmacological interventions (e.g., octreotide, aprotinin), and monitoring strategies.
Main Results:
- Urinary 5-HIAA levels can be normal even during a carcinoid crisis, limiting their predictive value for intraoperative events.
- Successful anesthetic management hinges on collaboration between endocrinologists, anesthesiologists, and surgeons, alongside thorough patient preparation.
- Cardiovascular instability, particularly hypotension, is a common concern requiring vigilant monitoring.
Conclusions:
- Preoperative optimization, including managing peptide effects and preventing mediator release, is crucial for successful anesthesia in carcinoid syndrome patients.
- Anesthetic strategies should focus on minimizing stress-induced mediator release and preparing for potential carcinoid crises.
- While surgical resection is indicated for localized tumors, disseminated disease typically requires medical management, with exceptions for specific cardiac or palliative procedures.