No abstract available.
Halothane

No abstract available.
Halothane

No abstract available.
Halothane

No abstract available.
Halothane

No abstract available.
Anesthetics ; Halothane* ; Hemodynamics*

Changes of power spectrum of R-R interval variabilty during recovery from N2O-O2 - halothane anesthesia have been studied in 20 patients. Power spectral analysis of R-R intervals during awake period and recovery period have been performed with newly developed R-R interval variability, we compared the power of each frequency range(low: 0.04-0.08 Hz, middle 0.10-0.15 Hz, high: above 0.3 Hz) between awake period and recovery period. There was no difference between awake period and recovery period in the power of low and high frequency ranges, but there was remarkable difference in power of midfrequency range. During awake period the power of midfrequency range changed with cyclic pattern, but there was no cyclic change during recovery period even after the regain of consciounss(30+/-3.2 min.). The power of midfrequency range during recovery period began to change with cyclic pattern only after 45 minutes. It is concluded that the power of midfrequency range is useful index of recovery from N2O-O2 -halothane anesthesia.
Anesthesia* ; Halothane ; Humans

Changes of power spectrum of R-R interval variabilty during recovery from N2O-O2 - halothane anesthesia have been studied in 20 patients. Power spectral analysis of R-R intervals during awake period and recovery period have been performed with newly developed R-R interval variability, we compared the power of each frequency range(low: 0.04-0.08 Hz, middle 0.10-0.15 Hz, high: above 0.3 Hz) between awake period and recovery period. There was no difference between awake period and recovery period in the power of low and high frequency ranges, but there was remarkable difference in power of midfrequency range. During awake period the power of midfrequency range changed with cyclic pattern, but there was no cyclic change during recovery period even after the regain of consciounss(30+/-3.2 min.). The power of midfrequency range during recovery period began to change with cyclic pattern only after 45 minutes. It is concluded that the power of midfrequency range is useful index of recovery from N2O-O2 -halothane anesthesia.
Anesthesia* ; Halothane ; Humans

No abstract available.
Anesthesia* ; Facial Bones* ; Halothane* ; Hepatitis*

To evaluate the second gas effect during induction of clinical anesthesia, the ratios of the end-tidal to the inspired concentration of halothane (FET/F1) were measured in 21 children in ASA class 1. The children were divided into three groups: gorup I received 100 % O2 and 1% halothane, group II received 70% N2O, 30% O2 and 1% halothane simultaneously, and group III received 1% halothane and 100% O2 for 5 min, followed by 70% N2O, 30% O2 and 1% halothane. With or without N2O, the increases of FET/F1 were significant 3min after inhalation of halothane. The increase in FET/F1 compared with the previous value, was insignificant in gorup I, and significant for 7min and 5min in groups II and III respectively. Compared with gorup I, the remarkable second gas effect in gorup II was noticed 7 min after induction and continued during the study, but in group III, it was noticed only 9 min after induction, and disappeared rapidly. The second gas effect in this study might be due to the concentrating effect by the uptake of N2O.
Anesthesia* ; Child* ; Halothane ; Humans ; Inhalation ; Nitrous Oxide

Since Steven(1971) introduced the cardiovascular effects of isoflurane many characteristics of isoflurane were reported. Among many advantages of isoflurane its limited metabolism in the body results least effect on the liver. In order to compare the effects isoflurane and halothane on liver function in five each gynecologic patient with normal liver function test(LFT), we checked liver function preoperatively as control and postoperative 7th day as experiment. We also studied the effects of isoflurane on liver function in patients with abnormal LFT. The results were as follows: First, there were no difference on the effect of LFT between halothane and isoflurane in patient with preoperatively normal LFT. Second, inhalation of isoflurane in patient with abnormal LFT does not seem to worsen liver function furthermore.
Anesthetics ; Halothane ; Humans ; Inhalation ; Isoflurane* ; Liver* ; Metabolism