No abstract available.
Halothane

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.
Anesthetics ; Halothane* ; Hemodynamics*

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

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

This experiment was attemptel to observe possible effects of ether, halothane and methoxyflurane on the blood sugar level of the rabbit, 5, 15, 30 and 60 minutes after start of anesthesia with ether halothane and methoxyflurane by a non-rebreathing system. Comparision was made between preanesthetic and postanesthetic levels of blood sugar and the following results were obtained. In the ether anesthesia group, the blood sugar level 15 minutes after anesthesia was increased and decreased gradualley a anesthesia was progressed. In the halothane group, the blood sugar level was increased 5 minutes after anesthesia, and then decreased more rapidly than in other groups. Blood sugar levels 60 minutes after anesthesia had returned to preanesthetic levels in all groups. As the above result shows, blood sugar levels were revealed to have a tendency to increase during induction of anesthesia, and then returned gradually to the preanesthetic level during maintenence of anesthesia.
Anesthesia ; Blood Glucose* ; Ether ; Halothane ; Methoxyflurane

In order to observe the influence of halothane upon the blood pressure during general anesthesia, the author prepared a formula, expressing change of blood pressure by times series and analyzed the types and distribution patterns in this experiment. The results obtained were as follows: 1) Blood pressure was high at the time of intubation. 2) Generally, blood pressure increased at the time of intubation and then stabilized within 20 minutes. 3) Most common patterns were dentified. (ijEE) type was 73~74% that is most common type, and (iEEE) type was 40~44%.
Anesthesia* ; Anesthesia, General ; Blood Pressure* ; Halothane* ; Intubation

The goal of this study was of what change in blood glucose the operation area and ageing made during halothane anesthesia. Sixty patients who were chosen randomly were divided into 4 operation groups according to operation site, that is, nil, surface, abdomen and thorax. Again, each operation group was fractionated into the young(below 40 year old), the middle (from 4l to 60) and the old(above 61). The blood sampling was done at preinduction for control value, 15 min, 30 min, 45 min and 60 min after induction for nil, and 15 min, 30 min, 45 min and 60 min after incision for operation-received groups. The results were as follows; 1) In nil, the young and the middle increased, but the old decreased in blood glucose. 2) In operation-received groups, there was no significance in blood glucose change among 3 age fractions. 3) The blood glucose change was larger in operation-received groups than in nil, more prominent in abdomen and thorax groups than in surface group. 4) The blood glucose of preinduction had no significance among 4 operation groups.
Abdomen ; Anesthesia* ; Blood Glucose* ; Halothane* ; Humans ; Thorax

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