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BACKGROUND: In professional ethics-related events, there are various unpleasant and complex ethical issues that require strong moral courage. Our aim is to identify and describe the potential categories of moral courage among nurses and to clarify the coping styles of nurses under different categories. METHOD: A cross-sectional study was conducted using three data collection tools: a self-designed general information questionnaire, a Chinese version of the Moral Courage Scale, and a Trait Coping Style Questionnaire. Three hundred fourteen nurses from a tertiary hospital in Heilongjiang Province, China, were analysed using potential profile analysis, descriptive analysis, and Mann-Whitney U test data. RESULT: The latent profile analysis (LPA) results indicate that the two-profile model is the most suitable and supports the existence of two different moral courage profiles: the low moral courage group (60.51%) and the high moral courage group (39.49%), with a high relative entropy value (0.922). The results point to a good profile solution, and there are significant differences between the two profiles. The Mann-Whitney U-test results showed that the positive coping scores of the high moral courage group were significantly higher than those of the low moral courage group, and the negative coping scores of the high moral courage group were significantly lower than those of the low moral courage group. CONCLUSION: Our results reveal the heterogeneity of moral courage in the nurse sample and indicate that nurses in the high moral courage group tend to choose positive coping styles, while nurses in the low moral courage group are more likely to develop negative coping emotions. This provides important significance and reference value for nursing managers, who can propose customised management plans based on the types of moral courage of the nursing community and the coping styles under different categories.
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BACKGROUND: Emphasizes the state of academic stress, social support, and self-regulatory fatigue on the physical and mental development of Chinese nursing students, the purpose of this study was to investigate the relationship between these variables and the mediating role of social support in academic stress and self-regulatory fatigue among a group of undergraduate nursing students in Heilongjiang Province, China, in order to provide a theoretical basis for working to reduce nursing students' self-regulatory fatigue. METHODS: In this cross-sectional study, 1703 nursing students from various academic years completed the scales of social support, academic stress, and self-regulatory fatigue. In the end, there were 797 valid questionnaires, for a recovery rate of 46.80%. For statistical analysis, the independent t-test, Kruskal Wallis test, and Pearson correlation coefficient were used. In addition, we undertake analyses using structural equation modeling. RESULTS: The bulk of nursing students, or 81.4%, are between the ages of 19 and 21. Eighty percent were females. The bulk (93.0%) was comprised of freshmen. Academic stress, social support, and self-regulatory fatigue had total scores of 111.28 ± 29.38, 37.87 ± 6.70, and 45.53 ± 5.55,respectively. Academic stress was correlated with social support and self-regulatory fatigue (all p < 0.001). Social support was an intermediate variable (p < 0.001), with an intermediate effect value of 0.122, representing 32.35% of the total effect. CONCLUSION: Academic pressure is associated with an increase in self-regulatory fatigue, mediated by social support. Educational administrators should pay attention to the social support and resource supplement of nursing students, the adjustment and compensatory development of nursing students' physical and mental resources, the advancement of nursing students' internal resource adjustment, and the reduction of their self-regulatory fatigue.
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Education, Nursing, Baccalaureate , Students, Nursing , Humans , Female , Young Adult , Adult , Male , Cross-Sectional Studies , Latent Class Analysis , Social Support , Surveys and Questionnaires , Fatigue/epidemiologyABSTRACT
Health coaching is a patient-centered intervention process, which had conducted many years in patients with chronic obstructive pulmonary disease (COPD) and made many positive outcomes. This article reviews the concept of health coaching, specific implementation measures, application effects, existing deficiencies and inspiration in patients with COPD, with a view to providing reference for the further development of health coach technology in patients with COPD.
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Objective@#To determine the objective effects of adenotonsillectomy on pediatric obstructive sleep apnea hypopnea syndrome (OSAHS) through analyzing the polysomnography (PSG) results between pre and post-operation.@*Methods@#A total of 56 pediatric OSAHS patients were included who underwent adenoidectomy or/and tonsillectomy and completed PSG follow-up from January 1, 2017 to March 31, 2018. All the pediatric patients who underwent adenoidectomy or/and tonsillectomy during the research period were arranged to take a preoperative PSG study. Patients who were diagnosed OSAHS would be encouraged to complete a follow-up PSG study ranged from1 to 3 months after surgery. The parameters of respiration and sleep architecture of PSG were compared and analyzed. The paired student t test was used to compare preoperative and postoperative mean values. The unpaired student t test was used to compare quantitative variables among different groups. The rank sum test was used if the data were abnormal distribution.@*Results@#Totally 238 patients completed preoperative PSG study, 62 patients were diagnosed as pediatric OSAHS, 56 eligible patients finished post-operative PSG. Hypopnea was the majority in all type of respiratory events in 56.45% (35/62) subjects, while central apnea as the majority in 29.03% (18/62) subjects who can also get significant CAI decrease after surgery. However, obstructive apnea as the majority only exist in 14.52% (9/62) subjects. The short-term cure rate of pediatric OSAHS was 85.71% (48/56). The postoperative AHI, MAI, CAI, HI, ODI, LoSpO2, percentage of stage I sleep and arousal index were significantly decreased, however, the OAI was no statistical decrease. The percentage of stage Ⅱ and rapid eye movement (REM) sleep were significantly increased, while no significant change in percentage of slow wave sleep and sleep efficiency(t=2.32, P=0.017).@*Conclusions@#Pediatric OSAHS manifest different characteristics of respiratory events from that of adults. Adenotonsillectomy can significant decrease respiratory events and improve sleep architecture, however, there are still some patients who can′t be completely relieved with adenotonsillectomy.
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Objective@#To compare the changes of genioglossus electromyography (GGEMG) with and without continuous positive airway pressure (CPAP) ventilation in moderate to severe obstructive sleep apnea (OSA) patients.@*Methods@#Each of subjects, including male snorers and non-snorers, underwent polysomnography (PSG) with synchronous GGEMG recording with intra-oral bipolar silver ball electrodes at the Sleep Center of Beijing Tsinghua Changgung Hospital from August 2016 to Sepember 2017. Manual CPAP pressure titration and with GGEMG were performed in patients diagnosed moderate to severe OSA. T-test was used to compare the changes of GGEMG in OSA group (n=12, AHI (65.90+23.67) events/h) and control group (n=6, AHI(2.30+1.93) events/h) before and after CPAP treatment.@*Results@#Variables of GGEMG (including tonic, peak and phasic GGEMG) were higher in OSA group than in control group during both wakefulness and non rapid eye movement(NREM) sleep. However, with CPAP treatment, the GGEMG variables were significantly decreased in OSA group during NREM sleep(tonic GGEMG: 1.23%±0.73% vs. 2.54%±1.12%, t=4.024, P=0.002; peak GGEMG: 12.37%±13.19% vs. 26.98%±15.52%, t=2.795, P=0.017; phasic GGEMG: 3.81%±2.47% vs. 8.82%±3.84%, t=5.113, P<0.001).@*Conclusions@#CPAP treatment can eliminate respiratory events and maintain airway patency. It is helpful to normalize the excessive GGEMG response in OSA patients during sleep, which has therapeutic significance to alleviate and prevent genioglossal neuromuscular lesions.
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Objective@#To compare the parameters of polysomnography (PSG) in sleep structure and respiratory events between dexmedetomidine-induced sleep and natural sleep.@*Methods@#From April 2016 to September 2018, a total of 44 patients with obstructive sleep apnea (OSA) and 3 patients with simple snoring completed PSG monitor both in natural sleep and dexmedetomidine-induced sleep in Department of Otorhinolaryngology Head and Neck Surgery, Beijing Tsinghua Changgung Hospital. The PSG parameters were statistically analysed with SPSS 22.0 software.@*Results@#The average dose of dexmedetomidine was (104.60±27.93) μg, and there was no significant difference between the induced-sleep efficiency and the natural sleep efficiency (82.14%±16.66% vs. 86.50%±9.18%, t=-1.559, P>0.05). There was no rapid eye movement(REM) stages in all 47 subjects and only 1 case of them had non-rapid eye movement(NREM) stage 3 in induced sleep. The percentage of NREM1 in total sleep time was statistically different between the two groups (42.10%±26.71% vs. 17.47%±11.68%, t=5.997, P<0.001),but there was no significant difference in the percentage of NREM2 in total sleep time between the two groups (56.96%±26.0% vs. 62.95%±9.03%, t=-1.521, P=0.135). About respiratory events, there were significant differences in apnea hypopnea index ((46.29±20.23)/h vs. (39.67±25.41)/h), obstructive apnea index (25.20[10.50,45.40]/h vs. 16.20[3.30,35.20]/h) between induced-sleep and natural sleep (t=2.297, Z=-3.008, all P<0.05), these difference were more significant in mild-to-moderate OSA. There were no statistically significant differences in central apnea index (0.00[0.00,2.80]/h vs. 0.40[0.10,1.20]/h), mixed apnea index (0.00[0.00,6.20]/h vs. 0.00[0.00,3.40]/h, hypopnea index (4.20[0.00,3.30]/h vs. 12.00[5.20,17.40]/h), Z=-0.110,-0.508,-1.544, all P>0.05). There were statistical differences in the lowest oxygen saturation (84.77%±7. 59% vs. 80.21%±11.62%, t=2.558, P=0.014).@*Conclusions@#There is no significant difference in sleep efficiency and NREM2 between dexmedetomidine induced sleep and natural sleep.NREM3 sleep is rare induced, but REM sleep is none of all. And dexmedetomidine induced sleep may aggravate obstructive sleep apnea, but not central apnea.
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Objective To identify common allergens in patients with eczema or dermatitis by using serum IgE tests, and to explore their clinical significance. Methods A retrospective study was carried out on eczema or dermatitis patients with at least one positive serum IgE test result from 10 hospitals in China. Results Totally, 458 patients were included in this study with an average age of 28.13 ± 23.11 years. Of these patients, 209 (45.63%)were male, and 249 (54.37%)were female. The top three allergens were cockroaches(180/458, 39.30%), dust mite mix(152/458, 33.19%) and peanuts (116/458, 25.33%). Polysensitization (sensitization to more than one allergen)was observed in 89.66%(26/29)of patients with atopic dermatitis and 86.84%(33/38)of patients with facial eczema. Moreover, the rate of polysensitization was significantly higher in patients with generalized lesions than in those with circumscribed lesions (80%(88/110)vs. 70.40%(245/348),χ2=3.880, P=0.049). The positive rate of specific IgE against inhaled allergens was highest in the age group of 11-20 years(39/43, 90.70%), while the specific IgE against milk(26.53%, 26/98)and beef (19.39%, 19/98)was mainly observed in children aged less than 3 years. In addition, patients in northern areas showed increased positive rates of specific IgE to mugwort (10.35% vs. 1.61%,χ2= 4.917, P< 0.05), cockroaches (42.42%vs. 19.35%,χ2=11.959, P<0.05), milk (14.39%vs. 3.23%,χ2=5.958, P<0.05), soybeans (13.89%vs. 3.23%,χ2=5.594, P<0.05), beef(11.36%vs. 1.61%,χ2=5.641, P<0.05)and fresh-water fish(13.38%vs. 3.23%,χ2 = 5.235, P< 0.05)compared with those in southern areas. Conclusions Cockroaches are a common allergen in patients with eczema or dermatitis, and their clinical significance is worthy of further study. Polysensitization seems to be more frequent in patients with facial eczema or atopic dermatitis. Age is an important factor influencing allergen sensitization, and there is a regional difference in the distribution of common allergens.
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Objective To evaluate the value of diffusion weighted imaging (DWI)in distinguishing the solid solitary pulmonary nodule (SPN).Methods 42 patients with SPN (malignant in 25 and benign in 1 7)who were confirmed by operation,biopsy or follow up after treatment underwent routine chest T1 WI,T2 WI and DWI.The b values were chosen as 300,500,800 and 1 000 s/mm2 ,and the corresponding apparent diffusion coefficient (ADC)values and the signal intensity (SI)were respectively measured.Results The ADC values and SI of benign and malignant SPNs were gradually reduced with increasing b value.The ADC value between benign and malignant SPNs was statistically significant with b value of 500 s/mm2 (P 500 =0.03 <0.05 ),meanwhile the SI was statistically significant with b values from 300 to 1000 s/mm2 (P 300 <0.001,P 500 =0.03 <0.05,P 800 =0.01 <0.05, P 1 000 =0.02<0.05).Conclusion Both SI and ADC value of DWI play important role in distinguishing benign and malignant SPNs, and the diagnostic efficiency of SI is superior to ADC value.
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OBJECTIVE:To observe therapeutic efficacy and safety of Compound digestive enzyme capsule in the treatment of dyspepsia. METHODS:154 patients with dyspepsia were selected and randomly divided into observation group and control group, with 77 patients in each group. Control group received routine treatment,Polyzyme tablet 600 mg,tid,30 min after meal;observa-tion group was additionally given Compound digestive enzyme capsule 600 mg,tid,30 min after meal. Treatment course of 2 groups lasted for 2 weeks. The improvement of dyspepsia,clinical efficacy,clinical manifestation score,improvement duration and ADR were observed in 2 groups after treatment. RESULTS:The total effective rate of observation group(89.61%)was significant-ly higher than that of control group(74.03%),with statistical significance(P0.05). CONCLUSIONS:Compound digestive enzymes capsule has good effect on dyspepsia with less ADR.
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<p><b>OBJECTIVE</b>To explore whether there were differences between the results of automatic titration and the results of manual titration for positive airway pressure treatment in patients with obstructive sleep apnea hypopnea syndrome (OSAHS) and its influencing factors, the results might provide a theoretical basis for the rational use of two pressure titration methods.</p><p><b>METHODS</b>Sixty one patients with OSAHS were included in this study. All patients underwent a manual titration and an automatic titration within one week. The clinical informations, polysomnography data, and the results of both two titration of all patients were obtained for analysis.</p><p><b>RESULTS</b>The overall apnea/hypopnea index was (63.1 ± 17.7)/h, with a range of 14.9/h to 110.4/h. The treatment pressure of manual titration was (8.4 ± 2.1) cmH(2)O, which was significantly lower than the treatment pressure of automatic titration, (11.5 ± 2.7) cmH(2)O (t = -9.797, P < 0.001). After using a ΔP of 3 cmH(2)O for the cutoff value (ΔP was defined as the difference of automatic titration and manual titration), it was found that the pressure of automatic titration was significantly higher in patients with a ΔP > 3 cmH(2)O than in patients with a ΔP ≤ 3 cmH(2)O, which was (13.3 ± 2.3) cmH(2)O vs (10.0 ± 2.0) cmH(2)O (t = -6.159, P < 0.001). However, there were no differences for the pressure of manual titration between these two groups, which was (8.6 ± 2.4) cmH(2)O vs (8.3 ± 2.0)cmH(2)O (P > 0.05). There was no significant difference in age, body mass index, neck circumference, abdomen circumference, apnea hypopnea index, and arterial oxygen saturation between these two groups.</p><p><b>CONCLUSIONS</b>The treatment pressure of automatic titration is usually higher than that of manual titration. For patients with a high treatment pressure which is derived from automatic titration, a suggestion about manual titration could be given to decrease the potential treatment pressure of continuous positive airway pressure, which may be helpful in improving the comfortableness and the compliance of this treatment.</p>
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Humans , Body Mass Index , Continuous Positive Airway Pressure , Methods , Oximetry , Patient Compliance , Polysomnography , Pressure , Sleep Apnea, Obstructive , TherapeuticsABSTRACT
Objective To study the correlation between laryngopharyngeal reflux (LPR) and voice disorders . Methods One hundred and three patients with reflux -related symptoms were recruited .The patients were evalu-ated with reflux symptom index (RSI) ,reflux finding score (RFS) evaluation and 24-hour dural-probe pH moni-toring .Eighty -nine cases with voice disorders were divided into 5 groups :vocal process granuloma (n=18) chron-ic pharyngolaryngitis (n=19) ,vocal polyps (n=15) ,vocal fold leukoplakia (n=21) and Reinke's edema (n=16) . The other 14 patients without voice disorders were the control subjects .Results According 24-hour dural -probe pH monitoring assessments ,48 .3% of the patients with voice disorders showed LPR positive .The positive rate in the vocal fold leukoplakia group (71 .4% ) and Reinke's edema group (75 .0% ) were significantly higher than the control group (35 .7% ) .RSI and RFS of the patients with Reinke's edema were both significantly higher than the control group(P=0 .020 ,P=0 .009) .RSI of the patients with chronic pharyngolaryngitis were significantly higher than the control group (P=0 .019) .The acid reflux episodes ,acid reflux time which except in the supine position of the vocal fold leukoplakia group were significantly higher than the control group .The acid reflux episodes ,acid ex-posure and acid reflux time which all except in the supine position of the Reinke's edema group were significantly higher than the control group .Conclusion The correlations between Reinke's edema ,vocal fold leukoplakia and LPR were stronger .In these two groups ,the acid reflux episodes were higher and acid reflux times were longer .
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PURPOSE: The objective of this study was to investigate the end-tidal carbon dioxide concentration (ETco(2)) monitoring in obstructive sleep apnea (OSA) patients during sleep and to explore whether the ETco(2) value may explain a significant portion of the relationship between ETco(2) value and apnea/hypopnea index (AHI) and nocturnal oxygenation indices. MATERIALS AND METHODS: Thirty-eight consecutive patients underwent overnight polysomnography and were synchronously monitored for ETco(2) using an microstream capnometer. Mean and maximum values during wake time and different sleep stages were recorded. We grouped 38 OSA patients into 2 subgroups on the basis of their difference of mean total sleep time and wake time ETco(2) [(T - W) ETco(2)]; one group, 20 patients with (T - W) ETco(2) less than 0, and the other group,18 patients with (T - W) ETco(2) greater than 0. RESULTS: Group with (T - W) ETco(2) less than 0 patients exhibited higher AHI (mean ± SD, 68.58 ± 22.78 vs. 27.61 ± 19.44 events/h) and lower nocturnal oxygenation indices (minimum Sao(2), 67.85 ± 10.08 vs. 82.61% ± 6.07%; mean Sao(2), 91.29 ± 3.31 vs. 95.15% ± 1.88%) compared with the other group. CONCLUSIONS: In summary, the study provides preliminary data showing that ETco(2) potentially can be used in continuous monitoring of OSA patients. And, (T - W) ETco(2) can indicate the severity of OSA.
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Carbon Dioxide/analysis , Monitoring, Physiologic/methods , Sleep Apnea, Obstructive/diagnosis , Adolescent , Adult , Age Factors , Aged , Cohort Studies , Female , Humans , Male , Middle Aged , Oxygen/metabolism , Polysomnography/methods , Prognosis , Pulmonary Gas Exchange , Respiratory Mechanics , Risk Assessment , Sensitivity and Specificity , Severity of Illness Index , Sex Factors , Sleep Apnea, Obstructive/physiopathology , Tidal Volume , Young AdultABSTRACT
Objective To determine the clinical value of the multi-slice spiral CT virtual endoscopy (CTVE) for the detection of biliary pancreatic junction lesions. Method MSCT and virtual endoscopic reconstruction were performed in 30 healthy volunteers, 18 cases of common bile duct stones and 7 cases of ampullary carcinoma to observe patterns of duodenal papilla and measure its size.Results Reconstructed image of CTVE showed that the normal duodenal papilla was nodular in 16,shaped like "V" in 8 "Y-shaped" in 6 of the healthy volunteers. Its diameter was (0.84±0.17)cm. In the patients with common bile duct stones, it was nodular and its diameter (1.72±0.32)cm. In the patients with ampullary cancer, it was of irregular protruded type and its diameter (2.30±0.85)cm.There was significant difference among the 3 groups in the overall mean values (P＜0.01). Conclusion CTVE is a convenient, non-invasive and precise clinical examination to observe the shape of duodenal papilla and determine its size.
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Objective: To study the effect of tripterygium wilfordii polyglycosidium (TWP) on atopie dermatitis (AD) by detecting the expression of IL-2,IL-4,IFN-γ and IL-IO mRNA. Methods: RT-RCR was used to detect the mRNA of IL-2,IL-4, IFN-γ and IL-10 in peripheral blood mononuelear cells (PBMC)of AD cultured with different concentrations of TWP.ResuRs:(1)The expression of IL-2 was significantly different between the high concentration group and other groups(P＜0.05 or P＜0.01 ), and between the control group and the middle concentration group (P＜0.01). (2)The expression of IL-4 was significantly different between the three different concentration groups (P＜0.01 ). (3) The expression of IFN-γmRNA was significantly different between the high concentration group and the control, the low, the middle concentration groups (P＜0.05 or P＜0.01 ). (4)There was no significant difference in expression of IL-10 mRNA between the high concentration group and the middle concentration group (P＞0.05), there was significant difference among the other groups (P＜0.05 or P＜0.01).Conclusion: TWP can suppress the expression of IL-2, IL-4, IFN-γand IL-10 mRNA, but the low concentration of TWP can suppress the high-level expression of IL-4 and IL-10mRNA in vitro.
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OBJECTIVE@#One of the objective of the study was to evaluate the reliability and validity of 18 items survey (OSA-18) which was made for disease specific quality of life in children with obstructive sleep apnea. The other was to explore whether OSA-18 could be used as a well appreciation method on OSAHS in children's quality of life before and after surgery.@*METHOD@#First, one hundred and twenty-two children's parents were interviewed with this survey scales and the survey scales was assessed by split-half reliability, retest reliability, internal consistency, construct validity and content validity. Second,OSA-18 was used to evaluate the QOL of 122 children within 4 weeks before PSG and in 6 to 12 months after operation.@*RESULT@#OSA-18 has a satisfactory internal consistency. Global Cronbach's alpha coefficient were 0.939. All domains and items Cronbach's alpha coefficients > 0.6; also has a well retest reliability, coefficient correlation of pearson equal 0. 619. Construct validity and content validity were satisfactory. The impact of pediatric OSAHS on QOL was moderate and severe in 77.05% patients pre-operation. However, it was only 28.69% after surgery. OSA-18 total scores, every domain and item score were significant decrease.@*CONCLUSION@#OSA-18 QOL survey had better reliability and validity, and was applicable for life quality assessment in OSAHS children. OSA-18 QOL survey could help clinical diagnosis of OSAHS in children and give quantitative evaluation for therapeutic measure.
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Child , Child, Preschool , Female , Humans , Infant , Male , Parents , Quality of Life , Reproducibility of Results , Sleep Apnea, Obstructive , Surveys and QuestionnairesABSTRACT
OBJECTIVE To investigate the effects of continuous positive airway pressure (CPAP) on patients with severe obstructive sleep apnea hypopnea syndrome (OSAHS) who underwent the revised uvulopalatopharyngoplasty (UPPP). METHODS 18 cases of severe OSAHS patients (therapy group) were selected for CPAP treatment in the 2nd week of postoperation. The average time of CPAP treatment was 34.3 days. The other 20 cases (control group) onlyunderwent operation. All patients were monitored with PSG before operation and in the 6 months postoperatively. RESULTS Compared with the result of pre-operative PSG, apnea hypopnea index (AHI) and Lowest SaO2 (LSaO_2) was improved (P＜0.001) in two groups. Compared with control group, LSaO_2 of the therapy group in the sixth month postoperatively was improved (P＜0.001), but the decreasing of AHI was not significant (P＞0.05). Contrast to the control group, the length of stage 1 and 2 decreased and that of REM increased. (P＜0.05). CONCLUSION For severe OSAHS patients who underwent uvulopalatopharyngo plasty, CPAP treatment for one month postoperatively could improve the hypoxia of patients, and prolong REM stage, shorten the stage 1 and 2 sleep. CPAP treatment in short time would be helpful for the severe OSAHS patients with revised UPPP.
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OBJECTIVE To investigate the effects of obstructive sleep apnea hypopnea syndrome on the quality of life of the patients. METHODS The quality of life was assessed with the Medical Outcomes Study SF-36 Health Survey in 145 patients with OSAHS and 17 snorers without OSAHS. Excessive Daytime Sleepiness was assessed with Epworth Sleepiness Scale. Pearson linear correlation and stepwise multiple regression analysis were used to study the association between each domain score of SF-36 and patients information,PSG parameters,EDS scores. RESULTS Three domains of SF-36 correlated negatively with Body Mass Index. Four domains correlated negatively with EDS. Three domains and total score correlated significantly with the lowest oxygen saturation. Two domains correlated negatively with the longest time of apnea. AHI and the lowest oxygen saturation have a mild side effect on the quality of life. BMI and EDS score have significantly side effect on the quality of the life. CONCLUSION Comparing to the mild OSAHS patients and snorers without OSAHS,the severe OSAHS patients have worse quality of life. EDS score and BMI have a significantly side effect on the severe OSAHS patients. OSAHS has a side effect on the quality of life of the patients.
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Objective To look for susceptible and resistant HLA gene of Atopic Dermatitis(AD), analyze single strand conformation polymorphism of the susceptible gene and observe whether the base sequence was different from healthy Method Polymerase chain reaction sequence specific primer(PCR SSP)was used to classify the HLA DRB allele of 122 patients and 80 controls PCR single strand conformation polymorphism(SSCP) was used to analyse the susceptible gene Results The DR 3 frequency of extrinic type of “pure” AD(EAD)group and complicated group was higher than that of the control group ( RR =5 27 and 3 59 respectively P 0 05). Conclusion HLA DR 3 was the susceptible gene of AD, while HLA DR 6 was the resistant gene of AD It indicated that people with HLA DR 3 were reliable to AD, while people with HLA DR 6 were not But there was no base difference between these people and the healthy in HLA DR 3
