Objective To evaluate which is better method zymogen or low temperature frozen in removing vascular endothelial cell so as to lay a foundation for creating a kind of brace which is not to be rejected and the same as own blood vessel. Methods Fresh and not damaged umbilical blood vessel was collected from natural labour women, human umbilical blood vessel was remove carefully from normal foetus, then was put into disinfectant at 37℃ for 24 hours. They were divided into 3 groups:normal group(NG),zymogen group(ZG) and low temperature frozen group(LG). ZG: 0.1% collagenⅡ enzyme was addedin umbilical blood vessel and closed the both sides and the vascular endothelialcell was removed in 37℃ water. LG:Umbilical blood vessel was put into liquidnitrogen for 24 hours after frozened step by step, and then it was put into 37℃ water for 30-60 s and the vascular endothelial cells were washed away by normal saline. NG:Umbilical blood vessel was kept into 4℃ Kerb’s liquid. The bacteria were culturedin each group. The samples were stained by HE,elastic fiber and collagen fiberwere observed by light and scanning electron microscope. The difference of compliance was compared. Human leukocyte antigen ABC(HLA-ABC) and HLA-DR were observed by immunohistochemical method and the expression of antigen of umbilical blood vessel was analysed. Results In LG, umbilical vascular endothelial cells were removed completely; artery showed vertical smooth muscle and vein showed elastic membrane. InZG, umbilical vascular endothelial cells were removed completely after 20 minutes;artery showed vertical smooth muscle cells and vein showed lower endothelial layer. The vascular compliance in LG was higher than that in NG, and the latter was also higher than that in ZG,but showing no significant differences (Pgt;0.05). The compliance of umbilical vein was 2-3 times as much asthat of umbilical artery.The expression of HLA-ABC and HLA-DR in LG andZG were lower than that in NG, showing significant differences (Plt;0.01). Conclusion Low temperature frozen methodand zymogen method(0.1% collagen Ⅱ enzyme for 20 min) can remove vascular endothelial cells of human umbilical blood vessel completely.Low temperature frozenmethod was better than zymogen method.
【Abstract】 Objective To investigate the effects of respiratory syncytial virus ( RSV) infection on the dynamic changes of airway hyperresponsiveness ( AHR) in ovalbumin ( OVA) -induced asthma in mice.Methods 60 BALB/c female mice were randomly divided into PBS control group ( A group, n = 6) , OVA group, OVA/RSV group, dexamethasone group ( D group, n =6) . Kinetics of AHR of OVA group mice was carried out on day 21, 25, 29 and 33 ( B1, B2, B3, B4 groups, n =6) , and the same with the OVA /RSV group( C1, C2, C3, C4 groups, n = 6 ) . The mouse asthma model was established by OVA-sensitization of intraperitoneal injection and repeated inhalation of OVA while the mice in OVA/RSV group were treated with combined intranasal inoculation with RSV ( 1. 0 ×106 pfu/mL in 50 μL) . Airway resistance of expiringphase ( RL ) and compliance of throax and lung ( CTL ) with different doses of acetylcholine ( Ach) were measured. Lung tissue sections were stained with hematoxylin and eosin ( HE) and periodic acid-Schiff ( PAS) for general morphology. Results Compared with B1 group, RL increased and CTL decreased in C1 group when Ach dose is above 5 g/L ( P lt; 0. 05, respectively) , and the effects prolonged ( 6 d, 10 d after challenge with OVA, respectively) much more than B1 group ( 2 d after challenge with OVA) . Compared with C1 group, RL decreased and CTL increased in D group and the infiltration of inflammatory cells was obviously alleviated in C1 group after treatment with dexamethasone. Conclusions Airway hyperresponsiveness increases obviously in OVA-sensitized and RSV-infected mice. The prolonged increase inRL and decrease in CTL ( 6 d, 10 d, respectively) may imply that RSV infection aggravates airway inflammation. The small airway inflammation may play a critical role in the persistence of airway hyperresponsiveness.
This study was performed on canine femoral veins which were interpositionally implanted into the femoral arteries and the investigation was in terms of zero-stress state, compliance and hemodynamic assessment. The results revealed that the vein grafts had the similar characteristics of compliance with the normal veins. Using Doppler ultrasonography to monitor the blood flow velocity through the vein grafts, the hemodynamic parameters such as pulsatility index (PI) and blood flow volume were evaluated consecutively within one month after the operations .No significant differences were found between these parameters at different time points. It was suggested that autogenous vein graft had an adaptive course when operating in an arterial hemodynamic circumstances and It’s mechanical changes did not bear upon the hemodynamics through the vein graft.
ObjectiveTo discuss the impact of health education for the patients with decompensated cirrhosis and their family members on patients' family life quality, psychological conditions, medication compliance, and re-admission rates. MethodsWe selected 100 decompensated cirrhosis patients between December 2012 and December 2013, and randomized them into two groups with 50 patients in each. One week prior to discharge, we conducted a comprehensive nursing assessment for the patients and developed hospital care regimen. Patients were followed up after discharge for six months. The control group underwent routine health education and extended care, while the experimental group had an addition of health education and extended care intervention on their family members. ResultsAnxiety and depression were alleviated in both the two groups. The psychological conditions of patients in the experimental group were significantly better than the control group (P<0.01). The total scores of quality of life was significantly different compared with the scores before intervention (P<0.01). Medication compliance improved more significantly in the experimental group after intervention (P<0.05). Re-admission rates decreased more significantly in the experimental group than the control group (P<0.01). ConclusionHealth education and extended care intervention for patients and their family members can improve patients' psychological conditions, promote medication compliance, reduce readmission rates, and improve patients' quality of family life.
ObjectiveTo investigate the practice effect of WeChat on the treatment compliance of patients with hyperlipidaemia in general out-patient department. MethodsFrom June 2012 to May 2013, 178 patients with hyperlipidaemia who could use WeChat software were selected. The patients were randomly divided into the control group (87 patients) and experimental group (91 patients). All the patients were treatment with routine nursing intervention. The experimental group was giving nursing intervention based on WeChat. After 180 days, the compliance score and serum lipid level of the patient were tested and analyzed. ResultsThe score in experimental group on the treatment compliance were as follows:diet:6.57±0.78, take medicine:8.64±1.13, exercise:5.11±0.97, and return visit:5.75±0.74; the percentage effective control of lipid level was 93.4%. The score of the control group on the treatment compliance were as follows diet:4.63±1.23, take medicine:6.91±0.73, exercise:3.98±0.54, and return visit:4.86±0.39; the percentage effective control of lipid level was 57.5%. The difference in the results between two groups is significant (P<0.05). ConclusionApplying WeChat software on nursing intervention for patients with hyperlipidaemia may increase the treatment compliance and enhance the control of serum lipid level.
ObjectiveTo investigate the efficacy of follow-up continuous nursing intervention on the self-management ability and medication compliance of patients undergoing maintenance hemodialysis. MethodsBetween June and December 2013, 157 maintenance hemodialysis patients were randomly divided into control group (n=76) and study group (n=81). The control group was given conventional nursing, while the study group received continuous nursing intervention program as well as conventional nursing. Six months later, the self-management ability and medication compliance of the patients were assessed by using self-made Patient Self-management Scale and Morisky Medication Compliance Scale. ResultsSix months later, self-management ability in patients of the study group was significantly better than that in the control group (P<0.05). Medication compliance rate in the study group reached a highest of 45.7%, while it was only 18.4% in the control group, and the difference between the two groups was significant (χ2=13.283, P<0.001). ConclusionFollow-up continuous nursing intervention can obviously improve maintenance hemodialysis patients' ability of self management and compliance behavior, so as to improve the quality of life of these patients.
ObjectiveTo investigate the effect of medical counseling games on ketogenic diet therapy for drug-resistant epilepsy children. MethodsA total of 98 children with drug-resistant epilepsy admitted to the neurology ward of Shenzhen Children's Hospital from January 2023 to June 2024 who were treated with ketogenic diet for the first time were selected as the study objects by random number table method, and were divided into observation group (n=49) and control group (n=49). The control group received the traditional multidisciplinary team health education mode, while the observation group received the ketogenic diet treatment based on the multidisciplinary team health education mode and participated in the customized medical counseling games intervention. The time of children reaching ketosis, the knowledge level of ketogenic diet caregivers and the retention rate of children on ketogenic diet were compared between the two groups. ResultsThe time of ketosis in observation group was earlier than that in control group (P<0.05). The knowledge level of the main caregivers of ketogenic diet and the retention rate of children with ketogenic diet at 3 months and 6 months in observation group were higher than those in control group (P<0.05). ConclusionThe use of medical counseling games in the ketogenic diet for medically refractory epilepsy is an effective therapeutic strategy that facilitates the early attainment of ketosis in children with medically refractory epilepsy, improves the knowledge of caregivers on the ketogenic diet, improves retention of children on the ketogenic diet, and serves to optimize the effectiveness of clinical outcomes, which may contribute to the quality of life of children with medically refractory epilepsy.
Objective To investigate the effect of a real-time compliance dashboard to help reduce ventilator-associated pneumonia ( VAP) with ventilator bundle. Methods 240 patients who were admitted into the intensive care unit ( ICU) of Shougang Hospital of Peking University and had received mechanical ventilation ( MV) for over 48 hours, between January 2010 and November 2011, were studied prospectively. The patients were divided into two groups by random number table, ie. a dashboard group ( n = 120) with implementation of a real-time compliance dashboard to help reduce VAP with ventilator bundle, and a control group ( n=120) with implementation of usually routine order to help reduce VAP with ventilator bundle. The success rate of ventilator bundle implementation, incidence of VAP, duration of MV, duration within ICU, mortality within 28 days, cost within ICU were compared between two groups. Results Compared with the control group, the success rate of ventilator bundle implementation obviously increased ( 81.6% vs. 52.5%) , incidence of VAP ( 14. 5/1000 days of MV vs. 36.2 /1000 days of MV) , duration of MV [ 5( 4,7) days vs. 8( 6,11) days] , duration within ICU [ 8( 6,12) days vs. 13( 8,16) days] , mortality of 28 days ( 12.6% vs. 28.6% ) , and cost within ICU ( 36,437 vs. 58,942) in the dashboard group obviously reduced ( Plt;0.05) . Conclusions Implementation of a real time compliance dashboard to help reduce VAP with ventilator bundle can obviously improve medical personnel compliance and reduce incidence of VAP, duration of MV, duration within ICU, mortality and cost in ICU than those of routine medical order to help reduce VAP with ventilator bundle.
ObjectiveTo compare the investigation results of compliance and accuracy of hand hygiene in medical staff achieved by Hospital Infection Management Department and Department Infection Management Teams, and analyze the reasons for differences of the results and take measures to improve the investigation ability of hand hygiene in hospitals. MethodsWe statistically analyzed the results of compliance and accuracy of hand hygiene from January to December 2013 investigated by the infection management department and 25 infection management teams. Both the hospital and departments used "WHO Standard Observation Form". Single-blind method was used to observe the implementation of hand hygiene in medical staff. ResultsThe hospital infection management department investigation showed that hand hygiene compliance and accuracy were 64.97% and 87.78%, respectively, while the investigation by infection management teams showed that hand hygiene compliance and accuracy were 90.54% and 93.37%, respectively. The differences between the investigation results of two-level organizations were statistically significant (χ2=286.2, P<0.001; χ2=532.6, P<0.001). ConclusionWe should take measures to enforce the training of hand hygiene implementation and the observation method, and improve the guidance and assessment, promote investigators' working responsibility and observation ability, so that the survey data can accurately reflect the actual situation to urge medical staff to form good hand hygiene habits.
Objective To know the present situation of hand hygiene compliance in medical staff and analyze problems in the management of hand hygiene and related influencing factors, in order to take effective control measures and gradually improve hand hygiene compliance in medical staff. Methods Between January and October 2014 and between January and October 2015, 8-10 healthcare workers respectively from Department of Internal Medicine, Department of Surgery and Department of Rehabilitation were selected to be observed. The healthcare workers between January and October 2014 before the application of plan-do-check-action (PDCA) cycle were regarded as the control group, and hand hygiene observation was performed in October 2014; the healthcare workers between January and October 2015 were regarded as the observation group (after PDCA application), and hand hygiene observation was carried out in October 2015. Under the PDCA cycle, we set up hand hygiene management working group to investigate the hand hygiene work before PDCA cycle was applied. Hand hygiene knowledge survey was carried out. Fishbone diagram was used to find out the causes of poor hand hygiene compliance. Based on these factors, improvement plans of hand hygiene were regulated and implemented. Then, continuous improvement was promoted according to PDCA cycle management process. Results After PDCA implementation, healthcare workers’ hand hygiene compliance (79.67%), correct handwashing rate (94.97%), and hand hygiene compliance before contacting the patients (85.96%), before sterile operation (68.14%), after contacting the patients (78.02%), after contacting patients’ blood or body fluid (85.96%), and after contacting patients’ surroundings (79.14%) were all significantly higher than those before the PDCA implementation (46.39%, 69.62%, 38.42%, 23.20%, 49.14%, 53.78% and 48.39%) (P<0.05). After the implementation of PDCA cycle, the amount of disinfectants consumed per day and the amount of hand sanitizer was 10.13 mL, significantly more than that before PDCA implementation (2.8 mL). The hospital was equipped with full hygiene equipment. Conclusion Applying PDCA cycle for continuous improvement of hand hygiene work can promote the hand hygiene compliance for medical staff.