Research Group of Acupuncture Anesthesia, Beijing Institute of Tuberculosis
This work presents our experience in studying individual variation of the effect of acupuncture anesthesia in chest surgery and its application to other types of operation in order to predict the effectiveness of acupuncture anestheisa.
One week before operation, the patient was examined by "polygraph." Finger photo-electric plethysmogram, respiratory movement and galvanic skin response (GSR) with one electrode placed on the dorsum and the other on the palm of the hand were recorded. The records were taken in 3 periods, i.e. resting and quiet condition, during needling and during the course of 15 min. induction respectively. The effect of acupuncture anesthesia in correlation with the changes of the amplitude and duration of GSR, the ampiltude of pulse wave and rythmicity of respiratory movement were analyzed.
The results indicated that these three indices were to a certain extent related to the individual variation in the effectiveness of acupuncture anesthesia. In patients with good analgesic effect, the GSR was inactive and the pulse wave and respiration were rather stable in resting condition and with relatively little response to insertion of needle; the pulse wave and the GSR were rather stable or slightly reduced during the course of needling and induction. By contrast, in patients with poor anesthetic effect, the GSR was very active, with marked response to insertion of needle; the pulse wave varied from time to time in quiet condition and was markedly reduced during insertion of needle. The respiration was uneven also.
Based on the preliminary result obtained in 1974, we used these physiological parameters for prediction of the effect of acupuncture anesthesia depending chiefly on the response to the insertion of needle. The corresponding rate of prediction in 473 patients undergoing lung resection varied from 73%-90%, on an average 80% from 1974 to 1978. In order to test its value for other branch of surgery using acupuncture anesthesia, this method was applied also to 65 cases of cesarean section and 30 cases of craniotomy, the result of 80% of agreement was obtained. But it was of no value for appendectomy, hysterectomy etc. since the corresponding rate was only 60%.
In conclusion, we consider that the effect of acupuncture anesthesia does depend to some extent on the individual reactivity. This individual variation may be evaluated preoperatively by physiological means and may be used as a guide for selection of patients suitable for acupuncture anesthesia. However, other factors other than individual variation which may play an important role in acupuncture anesthesia, should be investigated further.
This work presents our experience in studying individual variation of the effect of acupuncture anesthesia in chest surgery and its application to other types of operation in order to predict the effectiveness of acupuncture anestheisa.
One week before operation, the patient was examined by "polygraph." Finger photo-electric plethysmogram, respiratory movement and galvanic skin response (GSR) with one electrode placed on the dorsum and the other on the palm of the hand were recorded. The records were taken in 3 periods, i.e. resting and quiet condition, during needling and during the course of 15 min. induction respectively. The effect of acupuncture anesthesia in correlation with the changes of the amplitude and duration of GSR, the ampiltude of pulse wave and rythmicity of respiratory movement were analyzed.
The results indicated that these three indices were to a certain extent related to the individual variation in the effectiveness of acupuncture anesthesia. In patients with good analgesic effect, the GSR was inactive and the pulse wave and respiration were rather stable in resting condition and with relatively little response to insertion of needle; the pulse wave and the GSR were rather stable or slightly reduced during the course of needling and induction. By contrast, in patients with poor anesthetic effect, the GSR was very active, with marked response to insertion of needle; the pulse wave varied from time to time in quiet condition and was markedly reduced during insertion of needle. The respiration was uneven also.
Based on the preliminary result obtained in 1974, we used these physiological parameters for prediction of the effect of acupuncture anesthesia depending chiefly on the response to the insertion of needle. The corresponding rate of prediction in 473 patients undergoing lung resection varied from 73%-90%, on an average 80% from 1974 to 1978. In order to test its value for other branch of surgery using acupuncture anesthesia, this method was applied also to 65 cases of cesarean section and 30 cases of craniotomy, the result of 80% of agreement was obtained. But it was of no value for appendectomy, hysterectomy etc. since the corresponding rate was only 60%.
In conclusion, we consider that the effect of acupuncture anesthesia does depend to some extent on the individual reactivity. This individual variation may be evaluated preoperatively by physiological means and may be used as a guide for selection of patients suitable for acupuncture anesthesia. However, other factors other than individual variation which may play an important role in acupuncture anesthesia, should be investigated further.
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