RESUMO
BACKGROUND: The aim of this study was to compare the difference in hemodynamic change and in sensory or motor block between hyperbaric tetracaine and bupivacaine in spinal anesthesia. METHODS: The sixty-three patients, belonged to ASA class 1 and 2, were divided into tetracaine group and bupivacaine group. The patients were administered 0.5% hyperbaric tetracaine(Pantocaine ) in tetracaine group and 0.5% hyperbaric bupivacaine(Marcaine ) in bupivacaine group, intrathecally. After intrathecal injection of the agents, we measured the change of sensory block level according to pinprick test, the motor block by the modified Bromage score until fixations was achieved, and the blood pressure and heart rate. RESULTS: The two groups did not differ significantly with loss of sensory level and onset time. Bupivacaine group was revealed a slower fixations of motor block than tetracaine group(p<0.05). Changes of systolic blood pressure and mean arterial blood pressure of bupivacaine group were less than tetracaine group(p<0.05) in 2~25 minutes and 6~15 minutes, respectively. Diastolic blood pressure and heart rate were not different statistically in two groups. CONCLUSION: Spinal anesthesia with hyperbaric bupivacaine was revealed less changes of systolic blood pressure and mean arterial blood pressure than hyperbaric tetracaine, although fixation of motor block was delayed onset. Therefore, we thought that spinal anesthesia with hyperbaric bupivacaine may be used more safe than hyperbaric tetracaine in hemodynamical troublesome case.
Assuntos
Humanos , Raquianestesia , Pressão Arterial , Pressão Sanguínea , Bupivacaína , Frequência Cardíaca , Hemodinâmica , Injeções Espinhais , TetracaínaRESUMO
Succinylcholine-induced prolonged neuromuscular blockade may occur in patients with either a low level of plasma cholinesterase activity or genotypically abnormal form of that enzyme. We experienced a case of succinylcholine-induced prolonged apnea due to a low level of plasma cholinesterase activity. A 31-year-old woman, full term primigravida, underwent cesarean section for breech presentation under general anesthesia. Familial and past medical history were nonspecific and preoperative physical and laboratory findings were within normal range. After operation, delayed apnea was detected and lasted for about one hour. We performed controlled and assisted ventilation for two and half hours. Plasma cholinesterase activity measured 30.00 IU/L (colorimetric method, normal value: 1130~1960 IU/L) at the first postoperative day. She was discharged on 7th postoperative day without any sequelae. From follow-up study after six months, it measured 1.02 U/ml (EIA, normal value: 7~9 U/ml).
