[Effects of combined intercostal nerves block-sevoflurane used inhalation anesthesia with laryngeal mask ventilation on the stress response in patients suffered from breast neoplasms undergoing modified radical mastectomy].

OBJECTIVE

To investigate the influence of combined intercostal nerves block-sevoflurane used inhalation anesthesia with laryngeal mask ventilation on the stress response to modified radical mastectomy.

METHODS

60 patients with ASA physical status I-II, aged 33-53 years and scheduled for modified radical mastectomy were randomly divided into group I and group II. 30 cases each group. Patients in both groups received modified radical mastectomy under sevoflurane used inhalation anesthesia with laryngeal mask ventilation, and group II received intercostal nerves block before anesthesia induction. Blood samples were taken before anesthesia,at incision, one hour after incision and 5 minutes after the end of surgery for determination of serum concentration of cortisol and angiotension. Blood pressure and heart rate of patients was also recorded during the operation.

RESULTS

Compared with the baseline value before anesthesia, serum cortisol and angiotension increased 5 minutes after the end of surgery in both groups, but the concentration in group I were higher than that in group II. At incision the concentration of cortisol in group I were higher than the baseline value and the same time in group II.

CONCLUSION

Combined intercostal nerves block-sevoflurane used inhalation anesthesia with laryngeal mask ventilation can reduce the stress response in patients undergoing modified radical mastectomy.