Catecholamine Concentrations during and after Retroperitoneoscopic Adrenalectomies in Surgeon, Anaesthetist and Patients – how is physiological stress different from pathophysiological stress? Catecholamine Concentrations during Retroperitoneoscopic Adrenalectomies

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Harald Groeben Laura Schulze Violeta Brunkhorst Piero F. Alesina Martin K. Walz

Abstract

Background: During resections of phaeochromocytoma release of catecholamines can lead to excessive hypertension and arrhythmia. Therefore, these procedures can be stressful to surgeons and anaesthetists. It is completely unknown, how the excessive catecholamine concentrations in phaeochromocytoma patients relate to catecholamine concentrations of physiological stress of physicians and control patients undergoing adrenalectomy because of hormone inactive tumours. We measured catecholamine concentrations, heart rate and blood pressure in patients with phaeochromocytoma, incidentaloma, a surgeon and an anaesthetist.


 


Methods: After approval of the local ethics committee, we measured metanephrine and normetanephrine plasma concentrations in 8 patients with phaeochromocytoma, 6 control patients with incidentaloma, one surgeon and one anaesthetist at rest, after incision, after 20 and 40 minutes of surgery, and in recovery. Moreover, blood pressure and heart rate were obtained.


 


Results: Intraoperatively significant increases of blood pressure, metanephrine and normetanephrine were found in patients and surgeon. Significant increase of normetanephrine was also found in control patients. But catecholamine concentrations in patients with phaeochromocytoma were 18 to 42 times higher than in control patients and physicians.  Heart rate analysis showed no significant results.


 


Conclusion: During phaeochromocytoma resections significant increases in catecholamine concentration and blood pressure can be found in patients and physicians. The excessive increase of catecholamine concentrations in phaeochromocytoma patients, was not always reflected by a corresponding blood pressure increase. Interestingly, although catecholamine concentrations in phaeochromocytoma patients almost normalize directly after surgery, their blood pressure remains stable without the need for pharmacological support.

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How to Cite
GROEBEN, Harald et al. Catecholamine Concentrations during and after Retroperitoneoscopic Adrenalectomies in Surgeon, Anaesthetist and Patients – how is physiological stress different from pathophysiological stress?. Medical Research Archives, [S.l.], v. 9, n. 4, apr. 2021. ISSN 2375-1924. Available at: <https://esmed.org/MRA/mra/article/view/2403>. Date accessed: 14 may 2021. doi: https://doi.org/10.18103/mra.v9i4.2403.
Section
Research Articles

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