Monitoring arterial blood pressure during whole body hyperthermia

• Published in: Acta anaesthesiologica Scandinavica 2002-05, Vol.46 (5), p.561-566
• Main Authors: Kerner, T., Deja, M., Ahlers, O., Hildebrandt, B., Dieing, A., Riess, H., Wust, P., Gerlach, H.
• Format: Article
• Language: English
• Subjects: Adult; Anesthesia; Anesthesia depending on type of surgery; Anesthesia. Intensive care medicine. Transfusions. Cell therapy and gene therapy; arterial blood pressure; Biological and medical sciences; Blood Pressure - physiology; Body Temperature - physiology; Female; hemodynamic monitoring; Humans; Hyperthermia, Induced - adverse effects; Male; Medical sciences; Middle Aged; Monitoring, Physiologic; Neoplasms - therapy; Orthopedic surgery. Maxillofacial surgery. Otorhinolaryngologic surgery. Stomatology. Ophtalmology. Investigation and treatment technics; Sphygmomanometers; Vasodilation - physiology; whole body hyperthermia
• ISSN: 0001-5172; 1399-6576
• DOI: 10.1034/j.1399-6576.2002.460514.x

Background: For monitoring of arterial blood pressure (ABP) during whole body hyperthermia (WBH) different methods have been recommended. This investigation was performed to evaluate the agreement of invasive measurements at various sites, and to compare invasive and non‐invasive methods of ABP monitoring under conditions of a heat‐induced extreme vasodilation. Methods: In 19 patients, 48 treatments with WBH were performed. Measurements of ABP in the radial and femoral artery by oscillometry and by sphygmomanometry were taken at four temperature levels during WBH (37, 40, 41.8 and 39°C). Results: Significant differences were observed between invasive and non‐invasive methods for systolic ABP, with higher values for non‐invasive measurements. When compared with both invasive measurements for diastolic blood pressures, sphygmomanometry gave higher values and oscillometry gave lower values. Sphygmomanometry also showed higher values for mean ABP compared with all other techniques, while measurements in radial and femoral artery and by oscillometry only differed by approximately 5 mmHg. Conclusion: The mean arterial pressure and not the systolic and/or diastolic pressure should guide hemodynamic management during WBH. The sphygmomanometric technique is not recommended for use during hyperthermia.