Constitution identification model in traditional Chinese medicine based on multiple features

Objective To construct a precise model for identifying traditional Chinese medicine(TCM)constitutions;thereby offering optimized guidance for clinical diagnosis and treatment plan-ning;and ultimately enhancing medical efficiency and treatment outcomes.Methods First;TCM full-body inspection data acquisition equipment was employed to col-lect full-body standing images of healthy people;from which the constitutions were labelled and defined in accordance with the Constitution in Chinese Medicine Questionnaire(CCMQ);and a dataset encompassing labelled constitutions was constructed.Second;heat-suppres-sion valve(HSV)color space and improved local binary patterns(LBP)algorithm were lever-aged for the extraction of features such as facial complexion and body shape.In addition;a dual-branch deep network was employed to collect deep features from the full-body standing images.Last;the random forest(RF)algorithm was utilized to learn the extracted multifea-tures;which were subsequently employed to establish a TCM constitution identification mod-el.Accuracy;precision;and F1 score were the three measures selected to assess the perfor-mance of the model.Results It was found that the accuracy;precision;and F1 score of the proposed model based on multifeatures for identifying TCM constitutions were 0.842;0.868;and 0.790;respectively.In comparison with the identification models that encompass a single feature;either a single facial complexion feature;a body shape feature;or deep features;the accuracy of the model that incorporating all the aforementioned features was elevated by 0.105;0.105;and 0.079;the precision increased by 0.164;0.164;and 0.211;and the F1 score rose by 0.071;0.071;and 0.084;respectively.Conclusion The research findings affirmed the viability of the proposed model;which incor-porated multifeatures;including the facial complexion feature;the body shape feature;and the deep feature.In addition;by employing the proposed model;the objectification and intel-ligence of identifying constitutions in TCM practices could be optimized.

Application of TCM constitution in lifetime health maintenance

Healthy full life cycle has become an important national strategy,which indicates that attention needs to be given to human health throughout the life course.The full life cycle includes the whole process of conception and birth,development,growth,aging,and death,which has been recorded in Yellow Emperor's Canon of Medicine.From the perspective of traditional Chinese medicine (TCM) constitution theory,the TCM constitution focuses on the life process in a continuous evolution based on individual development at different phases or stages from infancy to senility.The development of TCM constitution is beneficial in accumulating the theoretical and practical experience for promoting the application of TCM constitution health service into the full life cycle,and providing theory,technique and method for TCM health service in the full life cycle,as well.Through this review,we've found that TCM constitution has being widely used for clinical practice,but still needs further improvement.

Fecal-associated microbiome differences between phlegm-dampness constitution and balanced constitution

Objective: This study aimed to explore the structural and functional characteristics of the fecalassociated microbiome(FAM) between the phlegm-dampness constitution(PDC) and balanced constitution(BC), and to screen the related specific operational taxonomic unit(OTU) biomarkers.Methods: This was a cross-sectional study. After strictly identifying the constitution of subjects, their clinical index was recorded and counted. Fecal samples were collected for 16S rDNA sequencing. Alpha diversity, beta diversity, and the relative abundance of dominant bacterial taxa were used to describe the FAM structure, and the Wilcoxon rank-sum test, Metagenome Seq, and linear discriminant analysis effect size(LEf Se) were used to screen specific bacterial taxa. Specific OTUs were screened to construct receiver operating characteristic(ROC) curves.Results: Thirty-two subjects were enrolled, including 22 subjects with BC and 10 subjects with PDC.There were significant differences in cold preference, levels of aspartate transaminase, β2-microglobulin,and creatine kinase MB, and alpha diversity indices(Shannon and Shannoneven) between the two groups. In principal coordinate analysis by abund-jaccard distance measure and partial least squares discriminant analysis, bacterial communities clustered separately between the two groups. Furthermore,based on Metagenome Seq, LEf Se, and the Wilcoxon rank-sum test, a total of 43, 18, and 130 OTUs were differentially distributed between BC group and PDC group, respectively, and OTU200, OTU133, and OTU353 were screened when P≤.01. The area under the ROC curve constructed from the 3 selected OTUs was 0.93.Conclusion: The FAM structure and related functional characteristics of the PDC group differed from those of the BC group. In particular, OTU200, OTU133, and OTU353 can be used as unique markers of PDC to assist clinical diagnosis.

Research on the Correlation Between Physical Examination Indexes and TCM Constitutions Using the RBF Neural Network

Objective To establish correlation models between various physical examination indexes and traditional Chinese medicine(TCM)constitutions,and explore their relationships based on the radial basis function(RBF)neural network.Methods The raw data of physical examination indexes and TMC constitutions of 650 subjects who underwent a physical examination were cleaned,classified and sorted,on the basis of which valid data were retrieved and categorized into a training dataset and a test dataset.Subsequently,the RBF neural network was applied to the valid samples in the training set to establish correlation models between various physical examination indexes and TCM constitutions.The accuracy and the error margin of the correlation model were then verified using the valid samples in the test set.Results Of all selected samples,the highest accuracy rates were 80% for the blood lipid index-TCM constitution model;100% for the renal function index-TCM constitution model;100% for the blood routine(male)index-TCM constitution model;88.8% for the blood routine(female)index-TCM constitution model;84.1%for the urine routine index-TCM constitution model;and 100% for the blood transfusion index-TCM constitution model.Conclusions The samples selected in this study suggested that there is a strong correlation between physical examination indexes and TCM constitutions,making it feasible to apply the established correlation models to TCM constitution identification.

Conducting a Correlation Model Between TCM Constitution and Physical Examination Index Based on BPNN Algorithm

This paper studies the correlation between Traditional Chinese Medicine(TCM)Constitution discrimination and physical examination index based on BPNN algorithm.253cases of routine urine test were used to build a linkage model between TCM Constitution and physical indicators via BPNN algorithm.According to the test,the correct rate of learning and test group are60%and40%,respectively.A strong correlation was found between TCM Constitution and physical examination indexes.By applying cutting-edge knowledge and technologies,the development and modernization process of TCM can be greatly promoted.

Systematic review and meta-analysis of the research on the relationship between TCM constitution type and non-alcoholic fatty liver disease

Objective:Through literature research,the distribution of TCM constitution of nonalcoholic fatty liver(NAFLD)was discussed,the common constitution types of the disease were determined,and medical evidence was provided for the prevention and treatment of NAFLD by traditional Chinese medicine.Methods:The literatures on the correlation between NAFLD and TCM constitution published in domestic journals from the database establishment to April 2020 were searched with"non-alcoholic fatty liver disease and TCM constitution"as the search term,and screening,quality evaluation and data extraction were conducted according to the na exclusion criteria.Statistical software stata16.0 was used for meta analysis of the included literature.Results:Sixteen studies were included.The results showed that the proportions of TCM constitution types and 95%CI of NAFLD patients were phlegm-dampness0.28(0.24,0.31),moisture-heat0.16(0.13,0.20),qi-asthenia0.13(0.10,0.16),qi-stagnation0.11(0.06,0.17),qi-stagnation0.08(0.06,0.10),yi-stagnation0.08(0.06,0.10),yi--stagnation0.08(0.06,0.10),blood stasis0.07(0.04,0.08),yang-asthenia0.06(0.04,0.08),and special report 0.02(0.01,0.02).Conclusion:The common constitution types of patients with nonalcoholic fatty liver are phlegm-dam-pness,damp-heat,q-asthenia,and mild,especially phlegm-dampness,which are most closely related to nonalcoholic fatty liver.

Application of Community TCM Constitution Identification in Health Management of the Elderly

Objective:To study the effect of adding traditional Chinese medicine(TCM)constitution identification to the health management of the elderly in Shuangzhao street of Xianyang city.Methods:A total of 142 elderly people were selected from January 2019 to January 2021 in this community and were divided into two groups which consists of 71 participants each.In the reference group,where health management is done based on the current routine of the health management measures of the community;on the other hand,the subjects of the experimental group incorporatesTCM Constitution identification to their health management routine.During the course of the experiment,the level of health awareness,the scores of physical indicators and quality of life,and the subjects’satisfaction with health management were compared between the two groups.Results:According to the statistical analysis of the experimental results,the level of health awareness of experimental subjects was 98.59%,while that of the reference group was only 76.06%,the difference between the two groups was significant and P<0.05;Based on the scores of physical indicators and quality of life of the subjects,the experimental group had significant advantages over those in the reference group(P<0.05);Questionnaires were used to investigate the subjects’satisfaction with health management.The satisfaction of the experimental group was 95.83%,while the satisfaction of the reference group was 80.28%,with a significant difference(P<0.05).Conclusion:Constitution of TCM identification application in community health management measures for the elderly can not only effectively improve the community elderly’s health knowledgeandact as a good disease prevention measure,but also can obviously improve the elderly’sphysical index and the quality of life.Besides,it also help build harmonious relations among residents of a community,and is worth popularizing among communities.

Observation on the Curative Effect of"Hand and Foot 12 Needle Acupuncture"on Stroke in Convalescent Period of Phlegm-Dampness Constitution

Objective:To observe the clinical effects of"hand and foot 12 needle acupuncture"on stroke in convalescent period of phlegm-dampness constitution.Methods:The 90 patients were divided into the treatment group(n=45)and the control group(n=45)according to the random number table method.The control group received basic Western medicine treatment+rehabilitation treatment of Western medicine,and the treatment group was additively treated with"hand and foot 12 needle acupuncture"on the basis of the control group.NIHSS score,MRS score and Barthel index(BI)before and after treatment were observed in the two groups,and the clinical efficacy of the two groups was compared.Results:The clinical efficacy of stroke patients in the convalescent period of phlegm-dampness constitution after treatment:the total effective rate of the treatment group was 93.33%,and the total effective rate of the control group was 66.67%.After statistical processing,the clinical efficacy of the treatment group was significantly better than the control group;NIHSS score,MRS score and Barthel index(BI)were better than the control group,and the differences were statistically significant(P<0.05).Conclusion:"Hand and foot 12 needle acupuncture"treatment of phlegm-dampness constitution convalescent stroke clinical effect is remarkable.

Differences in vascular endothelial function and serum proteome between obese people with phlegm-dampness constitution and balanced constitution

OBJECTIVE:To evaluate the extent of vascular endothelial dysfunction and preliminary identify serum protein biomarkers associated with obese individuals at risk for cardiovascular disease(CVD).METHODS:Fifteen obese volunteers with the phlegmdampness constitution or balanced constitution were recruited for this study respectively.The clinical baseline data was collected,and the vascular endothelial function was evaluated using the EndoPAT?.Blood samples were collected for the serum proteome analysis.The differences in the serum protein expression levels between the two groups were detected and the protein interaction network analysis,correlation analysis,receiver operating characteristic(ROC)curve analysis,and random forest model investigation were conducted.RESULTS:There were no statistical differences found in the baseline data.For vascular endothelial function,the reactive hyperemia index(RHI)of the phlegm-dampness constitution obese group was significantly lower than that of the balanced constitution obese group(1.46±0.30 vs 2.82±0.78,P<0.0001),indicating vascular endothelial dysfunction.There are 66 differentially expressed serum proteins between the two groups.apolipoprotein A2(Apo A2),angiotensin-converting enzyme 2(ACE-2),interleukin-33(IL-33),and forkhead box P3(FoxP3)showed significant differences and area under curve values of their ROC curves were greater than 0.7 and correlated significantly with RHI.CONCLUSION:Vascular endothelial dysfunction was present in the phlegm-dampness constitution obese group.Thus,alterations in the expression levels of key serum proteins,including Apo A2,ACE-2,IL-33,and Fox P3 could serve as potential biomarkers in the obese population at risk of CVD.

Classification of traditional Chinese medicine constitution based on facial features in color images

Objective:To explore the possible correlation between traditional Chinese medicine(TCM)constitution and facial features in color images and to improve the accuracy of automated constitution classification.Methods:Color images were taken of 5150 individuals of different professions.Automated face detection and key point positioning were performed on the collected images,which were then transformed into a standard size.The relationship between facial features and TCM constitution based on the red,green,blue(RGB)pixel and the local binary pattern(LBP)texture features was explored.Results:The overall accuracy rate and robustness of TCM constitution classification based on RGB features were low.Classification results of the phlegm-dampness,damp-heat,blood stasis,and balance constitutions achieved high accuracy rates.Classification accuracy rate using the LBP texture feature was higher than that of the RGB feature,with the best accuracy observed for the balance constitution.Conclusion:Application of computer image acquisition and processing of facial features may serve as an adjunct to the TCM diagnostic method of inspection.

Research Status of Traditional Chinese Medicine Constitution Theory in Insomnia

With the development of modern bio-psycho-social medical model and traditional Chinese medicine(TCM)constitution theory,we gradually realize that the exploration of the constitution characteristics of insomnia is of great significance for the reveal of the origin of insomnia and the innovation of its treatment and nursing methods.This paper focused on the analysis of the investigation of TCM constitution classification of insomnia and the application of TCM constitution theory in the treatmentand nursing of insomnia.Moreover,the research prospect of insomnia in TCM constitution was discussed.The purpose is to provide theoretical basis for the treatment and nursing of patients with insomnia based on analysis of constitution differentiationin the future,and to better serve the clinic.

A brief history of human constitutionology

Human constitutionology studies human itself, which was proposed by Dr. Kuang. The study on human constitution in Chinese medicine has ever increased since the late 1970s. This review on the development of human constitutionology in Chinese Traditional Medicine （TCM） and western medicine is expected to give people with a different background to understand the establishment of this new subject, and its significance in promoting modernization of TCM and multi-disciplinary collaboration in human study and as an individualized model guiding the re-orientation of modern madicine.

Research Progress of Traditional Chinese Medicine Constitution Theory in Patients with Cervical Spondylosis

This paper expounds the theory of traditional Chinese medicine(TCM)constitution applied to patients with cervical spondylosis,in order to clarify the distribution characteristics of TCM constitution of patients with cervical spondylosis.And to analyze the correlation between TCM constitution theory and cervical spondylosis is helpful to provide ideas for integrated nursing care of TCM and western medicine in patients with cervical spondylosis,and provide the basis for the construction of health management program and the evaluation of health promotion effect.

Research progress of diabetes treatment guided by Traditional Chinese Medicine constitutional types

Diabetes and its complications seriously affect patients’life quality,and have a major impact on individuals,families,health systems,and national economies.Traditional Chinese Medicine constitution refers to the inherent characteristics of a relatively comprehensive and stable form,structure,physiological function,and psychological state formed under the combined effects of innate endowments and acquired in the course of an individual’s life.Many studies have shown that the constitution type is closely related to the incidence of diabetes,especially in the process of disease prevention and treatment.This article reviews the correlation of diabetes and its chronic complications with constitution types to provide theoretical basis for the treatment of diabetes based on syndrome differentiation.

Clinical observation of Guipi Decoction Combined with non steroidal drugs on sleep in elderly patients with acute traumatic pain and Qi deficiency constitutionabortion

Objective:To explore the effect of Guipi Decoction Combined with non steroidal anti-inflammatory drugs on sleep time of elderly patients with traumatic pain and Qi deficiency constitution during hospitalization.Methods:A total of 52 elderly patients hospitalized in the orthopedic(trauma)ward of the Second Affiliated Hospital of Zhejiang Chinese Medical University from November 2020 to may 2021 were randomly divided into control group and treatment group.Patients in the control group were treated with loxoprofen sodium tablets immediately after admission,and placebo was added to loxoprofen sodium tablets from the second day of admission;The patients in the treatment group were treated with loxoprofen sodium tablets after admission.Guipi Decoction was added on the basis of loxoprofen sodium tablets from the second day of admission.Before and after admission,all patients used the TCM constitution classification judgment table to evaluate the score of qi deficiency and VAS;From the first day to the fourth day after admission,the bracelet was worn to monitor the sleep time(total sleep time,deep sleep time,light sleep time and awakening times)every night.The patients were scored by VAS after taking drugs every morning.Results:Finally 25 patients in the control group and 24 patients in the treatment group completed the experiment.There was no significant difference in gender,age,fracture location,chronic medical history VAS score and TCM Qi deficiency constitution score,between two groups at admission(P>0.05).At the time of discharge,the score of qi deficiency constitution in the treatment group was 33.724±12.634;The TCM Qi deficiency constitution score of the control group was 42.25±15.912,and there was significant difference between the two groups(P<0.05);and there was significant difference in VAS score between the two groups at discharge(P<0.05).There were significant differences in total sleep time,light sleep time,deep sleep time and night awakening times between the two groups on the second,third and fourth day of admission(P<0.05).Conclusion:1.Guipi Decoction can significantly improve the sleep time of patients with Qi deficiency acute traumatic pain.2.Guipi Decoction can not only improve the constitution of patients with Qi deficiency bias,but also improve the VAS score at discharge.

岭南地区亚健康人群睡眠状况与中医体质类型的相关性研究

【目的】探究岭南地区亚健康人群睡眠状况与中医体质类型的相关性。【方法】选取2022年5月~2023年5月于深圳市宝安区中医院治未病中心就诊的688例在深圳市居住5年以上,无严重心血管疾病,经亚健康人群评定量表评定为亚健康的人群为研究对象,采用匹兹堡睡眠质量指数(PSQI)量表、中医体质评定量表对其进行问卷调查,并将其睡眠状况与中医体质类型进行多元线性回归分析。【结果】(1)调查问卷发放回收情况:共发放688份问卷,其中,失访19份,回收669份,剔除无效问卷29份,最终共纳入有效问卷640份。(2)不同睡眠状况人群的PSQI量表评分情况:根据PSQI量表得分情况将人群分为睡眠优组(PSQI总分<8分)350例和睡眠差组(PSQI总分≥8分)290例,组间比较,睡眠优组的入睡时间、睡眠时间、睡眠障碍得分以及总分均明显低于睡眠差组(P<0.05或P<0.01)。(3)不同睡眠状况人群的中医体质类别分布情况:睡眠优者多表现为平和质(86.86%),睡眠差者多表现为偏颇体质(79.64%)。睡眠差人群中,偏颇体质排前3位的分别是湿热质(15.52%)、痰湿质(13.79%)以及气郁质(13.10%)。(4)多元线性回归分析结果显示,入睡时间与痰湿质、气郁质呈正相关(P<0.01),与平和质呈负相关(P<0.05);睡眠效率与湿热质、特禀质呈正相关(P<0.05或P<0.01),与平和质呈负相关(P<0.05);睡眠障碍与气郁质、阴虚质呈正相关(P<0.01);催眠药物与阴虚质呈正相关(P<0.01);日间功能障碍与痰湿质呈正相关(P<0.05)。【结论】岭南地区亚健康人群睡眠状况与其中医体质类型具有一定相关性,湿热质、痰湿质、气郁质、阴虚质、平和质、特禀质是影响睡眠状况主要的6种中医体质类别;结合中医体质辨识指导亚健康人群通过改善其体质从而达到未病先防的目的是很有意义的。

乳腺癌发病与中医体质及辨证分型的相关性研究

目的探讨乳腺癌发病与中医体质及辨证分型的相关性。方法选取2021年1月至2023年6月在安徽医科大学第一附属医院就诊的108例乳腺癌患者为观察组,另选取同期在该院进行体检的80例健康妇女为对照组。统计所有受试者的一般资料、中医体质及中医辨证分型,采用多因素logistic回归分析乳腺癌发病的危险因素,以Spearman法分析中医体质与辨证分型的相关性。结果108例乳腺癌患者中,以气虚质(18.52%)、气郁质(16.67%)、血瘀质(13.89%)占比较高,2组间平和质、气虚质、血瘀质、气郁质分布比例比较,差异有统计学意义(P<0.05),其他体质分布比例差异无统计学意义(P>0.05);多因素logistic回归分析结果显示,平和质为乳腺癌发病的保护因素,气虚质、气郁质为乳腺癌发病的危险因素(P<0.05);108例乳腺癌患者中,辨证分型最多为气血亏虚证(56.48%),其后依次为肝郁痰凝证(18.52%)、冲任失调证(16.67%)、肝肾阴虚证(8.33%);气虚质与气血亏虚证呈正相关(P<0.05);阴虚质与肝肾阴虚证呈正相关(P<0.05);血瘀质与冲任失调证呈正相关(P<0.05);气郁质与肝郁痰凝证呈正相关(P<0.05)。结论气虚质、气郁质为乳腺癌的易感体质,乳腺癌中医体质与辨证分型存在相关性,在一定程度上影响疾病证型的发生及发展。

从“有诸内者必形诸外”及体质论治小儿慢性荨麻疹

慢性荨麻疹因其反复发作、瘙痒难耐的特点严重影响患儿的身心健康,属于儿科临床难治病证。慢性荨麻疹虽属于外科范畴,侯江红教授认为“内之症或不及其外,外之症则必根于其内也”,治疗时不可拘泥于外治之法,必当思外而揣内,究其内在本因。考虑小儿好发该病,多责之于乳食所伤,侯教授指出小儿慢性荨麻疹的发生多由脾胃不和导致,因此临床辨证可从脾胃湿热型、气虚热盛型、营卫失和型入手,治疗采用培土生金法健运脾胃、调补肺脾、调和肺脾,以扶正固表、调和营卫、解表透疹。体质形成由脏腑盛衰偏颇所决定,因此亦认为体质因素是荨麻疹治疗与预防的重要病机,其中高敏偏颇体质患儿易出现荨麻疹、易咳嗽、哮喘等非健康倾向,故将调理高敏体质作为防治的重点,有效减少了患儿荨麻疹的复发率。此外还注重治养兼顾,讲求医患配合,从饮食、运动、作息、家长行为心理等方面改变养护观念,避免家长过度就医对患儿造成过度用药,通过非药物干预的方法来有效调动患儿自身免疫功能,亦增进了医患之间的信任。文章附案例一则,详细介绍侯江红教授治疗小儿慢性荨麻疹临证经验,以期为临床相关治疗提供参考。

宫颈高危型人乳头瘤病毒感染患者中医体质类型分布研究

目的:分析宫颈高危型人乳头瘤病毒(high risk human papilloma virus,HR-HPV)感染患者中医体质类型分布特点,为中医药调理体质防治宫颈HR-HPV感染提供依据。方法:选择2019年1月至2020年12月就诊于河南中医药大学第一附属医院妇科门诊及体检中心的420例宫颈HR-HPV感染者作为观察组,选择420例同时段宫颈HR-HPV检测阴性者为对照组。分析两组中医体质类型分布情况、观察组不同年龄段中医体质类型分布情况、观察组不同HR-HPV基因型别中医体质类型。结果:观察组中医体质分布依次为:痰湿质(30.50%)>湿热质(19.00%)>平和质(15.50%)>阳虚质(14.80%)>气虚质(10.00%)>阴虚质(5.90%)>瘀血质(2.70%)>气郁质(1.70%);对照组中医体质分布依次为:平和质(73.30%)>湿热质(8.40%)>阴虚质(5.70%)>痰湿质(4.50%)>气虚质(4.30%)>阳虚质/瘀血质(1.80%)>气郁质(0.20%)。两组中医体质类型比较,差异具有统计学意义(P<0.05),其中,痰湿质、湿热质、阳虚质、气虚质,两组间比较,差异具有统计学意义(P<0.001)。观察组体质类型居前三位的是痰湿质、湿热质、阳虚质,占全部体质类型的64.30%。对照组平和质324例,占比73.50%,观察组平和质81例,占比15.50%,两组间比较,差异具有统计学意义(P<0.001)。观察组中,痰湿质、阳虚质、阴虚质主要见于46~55岁,湿热质、气虚质、气郁质主要见于36~45岁,组间比较差异具有统计学意义(P<0.05)。两组宫颈HR-HPV16、18型和非16、18型中医体质比较,差异无统计学意义(P>0.05)。结论:痰湿质、湿热质、阳虚质为宫颈HR-HPV感染人群的易感体质;痰湿质、湿热质、阳虚质与年龄具有相关性,痰湿质多见于36~45岁,湿热质、阳虚质多见于46~55岁,HR-HPV基因型别与中医体质类型之间无明显相关性。

中医体质分型对全麻诱导时七氟醚MAC值的影响

目的:探讨气管插管全麻诱导时,在常见的四种中医体质分型患者中,吸入七氟醚使意识消失的最低肺泡有效浓度的半数有效浓度(EC_(50))的差异。方法:研究纳入80例拟择期行气管插管全麻手术患者,根据《中医体质分类与判定》标准分为平和质(A组)、血瘀质(B组)、阴虚质(C组)、阳虚质(D组)共四组,每组20例。以吸入麻醉药七氟醚诱导麻醉,使患者意识消失,设定起始七氟醚的呼气末浓度为1.72%,并计算出5个阶梯的七氟醚呼吸末浓度值,分别为0.84%、1.21%、1.72%、2.45%和3.50%,最终用序贯法测定患者意识消失时七氟醚最低肺泡浓度的EC_(50)。结果:四组病人意识消失时七氟醚EC_(50)及对应的95%可信区间(CI)分别是:A组EC_(50)为2.37%(95%CI:1.97%~2.85%);B组EC_(50)为2.21%(95%CI:1.88%~2.58%):C组EC_(50)为2.83%(95%CI:2.63%~3.03%);D组EC_(50)为1.85%(95%CI:1.57%~2.18%)。结论:七氟醚最低肺泡有效浓度在不同中医体质患者中的存在一定差异性,阳虚患者七氟醚EC_(50)比阴虚患者明显降低。