[Three-dimensional morphological analysis of corticotomy-assisted intrusion of premolars in Beagle dogs].

OBJECTIVE: This study aims to identify the effects of corticotomy-assisted orthodontic premolar intrusion andevaluate the changes of root resorption and the alveolar bone. METHODS: Both sides of the mandible of eight male Beagle dogswere randomly assigned into experimental and control groups. The third (P3) and fourth (P4) premolars were intruded withboth mini-screw implant anchorage (MIA) and corticotomy on the experimental side. By contrast, P3 and P4 were intrudedwith MIA alone on the control side. During pre-operation and after 2, 4, 8, and 12 weeks of orthodontic force applications,cone beam computed tomography was performed on every dog. The distance of tooth intrusion and root resorption of furcation, as well as the apex and height changes of the alveolar bone were measured and analyzed. RESULTS: The intrusion distanceof premolars on the experimental side was greater than that on the control side (P < 0.05). The root of furcation and apex onboth sides occurred in root resorption, and the root resorption of the apex on the experimental side was lighter than that onthe control side after 12 weeks of force application (P < 0.05). The alveolar bone height decreased, and the height reductiondistance on the experimental side was greater than that on the control side after 8 and 12 weeks of force application (P < 0.05). CONCLUSION: Corticotomy accelerates orthodontic molarintrusion and reduces root resorption.

Nursing intervention of deep vein thrombosis after major bone trauma / 中国基层医药

Objective To investigate the effect of nursing intervention on deep vein thrombosis after major bone trauma.Methods 59 cases of bone trauma surgery were selected as the research subjects,according to random number table method,they were randomly divided into the observation group and the control group.The patients of the control group received routine nursing care,and the patients of the observation group were given nursing intervention for postoperative deep vein thrombosis on the basis of the conventional nursing care.The pulmonary embolism,deep vein thrombosis and lower extremity swelling occurred rate before and after intervention of venous blood flow velocity, patients hospitalization time and quality of care scores were compared.Results The incidence rates of pulmonary embolism (0.0%),deep vein thrombosis (11.1%)and lower extremity swelling with postoperation (14.8%)of the observation group were significantly less than those in the control group(15.6%,53.1%,46.9%),there was signifi-cant differences (χ2 =4.61,11.54,6.89,all P <0.05).After intervention,the lower extremity venous blood flow velocity of two groups [(20.9 ±5.3)cm/s,(27.5 ±7.4)cm/s]was significantly higher than before intervention [(19.2 ±4.6)cm/s,(19.8 ±5.3)cm/s],there was statistically significant difference (t =1.37,4.40,all P <0.05).The stem prognosis of lower extremity venous blood flow velocity of the observation group [(27.5 ±7.4)cm/s]was significantly higher than (20.9 ±5.3)cm/s of the control group,there was significant difference (t =3.98, P <0.05).The hospitalization time in the observation group (45.2 ±5.4)d was less than (62.3 ±7.5)d in the con-trol group,and the nursing quality score (98.7 ±1.1)was higher than (91.8 ±1.7)in the control group,and the differences were statistically significant (t =9.88,18.12,all P <0.05).Conclusion Comprehensive nursing inter-vention can help improve venous blood flow velocity,reduce the incidence of deep vein thrombosis,shorten the hospital stay,and improve the quality of nursing.

Application of self care interactive mode in clinical nursing of patients with thoracolumbar fracture / 中国基层医药

Objective To explore the influence of self care interaction mode on the health behavior of the patients with thoracolumbar fracture.Methods 127 cases of thoracolumbar fracture were randomly divided into the observation group (62 cases)and the control group (65 cases)according to random digital table method.The patients of the observation group were given self nursing interactive nursing.The patients of the control group were given rou-tine nursing.The comparative study of the following indicators of the two groups of patients:(1)activities of daily liv-ing (ADL);(2)bedridden patient self -care skills of and self -care knowledge assessment;(3)satisfaction,compli-cations,the average length of days and discharged patient telephone visit the initiative.Results The discharge self nursing ability raise,health behavior change,self -care knowledge and self -care skills of the observation group were significantly better than the control group,there were statistically significant differences(P <0.05);after discharge from the hospital,bed incidence of complications (6.5%)of the observation group was significantly lower than the control group (18.1%),the difference was statistically significant (χ2 =4.16,P <0.05)and satisfaction degree (91.7 ±6.5)was higher than the control group (87.3 ±7.5),with statistically significant difference (t =3.59,P <0.05),and the average hospitalization day (16.11 ±7.61 )d was lower than that of the control group (19.95 ± 11.55)d,there was statistically significant difference (t =2.20,P <0.05).Conclusion Self care interactive mode is conducive to mining the self -care ability of patients,improve the self -care ability of patients,and has good social benefits.

Three-dimensional morphological analysis of corticotomy-assisted intrusion of premolars in Beagle dogs / 华西口腔医学杂志

<p><b>OBJECTIVE</b>This study aims to identify the effects of corticotomy-assisted orthodontic premolar intrusion andevaluate the changes of root resorption and the alveolar bone.</p><p><b>METHODS</b>Both sides of the mandible of eight male Beagle dogswere randomly assigned into experimental and control groups. The third (P3) and fourth (P4) premolars were intruded withboth mini-screw implant anchorage (MIA) and corticotomy on the experimental side. By contrast, P3 and P4 were intrudedwith MIA alone on the control side. During pre-operation and after 2, 4, 8, and 12 weeks of orthodontic force applications,cone beam computed tomography was performed on every dog. The distance of tooth intrusion and root resorption of furcation, as well as the apex and height changes of the alveolar bone were measured and analyzed.</p><p><b>RESULTS</b>The intrusion distanceof premolars on the experimental side was greater than that on the control side (P < 0.05). The root of furcation and apex onboth sides occurred in root resorption, and the root resorption of the apex on the experimental side was lighter than that onthe control side after 12 weeks of force application (P < 0.05). The alveolar bone height decreased, and the height reductiondistance on the experimental side was greater than that on the control side after 8 and 12 weeks of force application (P < 0.05).</p><p><b>CONCLUSION</b>Corticotomy accelerates orthodontic molarintrusion and reduces root resorption.</p>

Comparison of chemical components between Baishao and Chishao water extracts and their effects on proliferation of rat thoracic aorta smooth muscle cells / 南方医科大学学报

<p><b>OBJECTIVE</b>To compare the chemical components in Baishao and Chishao water extracts and investigate their effects on the proliferation of rat thoracic aorta smooth muscle cells in vitro.</p><p><b>METHODS</b>The contents and chemical structures of monomers separated from the water extracts of Baishao and Chishao were analyzed using high-performance liquid chromatography and mass spectroscopy. Rat thoracic aorta smooth muscle cell line A7r5 and its platelet-derived growth factor-BB (PDGF-BB)-induced proliferation model were exposed to different concentrations of Baishao and Chishao water extracts, and the cell viability was analyzed by mitochondrial-dependent reduction of MTT and real-time cell analyzer.</p><p><b>RESULTS</b>The growth of A7r5 cells was significantly stimulated by 300 µg/ml Baishao water extract (P<0.01), but Chishao water extract produced no such effect (P>0.05). In PDGF-BB-induced cell proliferation model, the cell growth was significantly suppressed by 100-500 µg/ml Chishao water extract (P<0.01), while Baishao water extract showed no obvious effect on the cell proliferation (P>0.05).</p><p><b>CONCLUSION</b>Baishao and Chishao water extracts have different chemical components and produce different biological effects.</p>

Clinical center-based health management and quality of life of patients with asthma / 中华健康管理学杂志

Objective To evaluate the effects of clinical center-based health management on quality of life (QOL) of patients with asthma. Methods A total of 642 patients who had received standard antiasthma treatment over 3 years in our clinical center from September 2005 up to now were randomly assigned to the good compliance group ( group A, n = 326 ) and bad compliance group ( group B, n = 316 ). A questionnaire was used to estimate the awareness about asthma,medical therapy and disease control. Levels of QOL were compared at 6 months and 1 and 3 years after health education. Results In group A,uncontrolled,partly controlled, and completely controlled asthma were found in 21%, 47%, and 32% participants, respectively. Significant difference of QOL was shown between the 2 groups after the intervention ( P ＜ 0. 05 ). At 6 months, forced expiratory volume in one second ( FEV1 ), percentage of predicted FEV1 ( FEV1 % pre) ,and peak expiratory flow rate ( PEF)were significantly improved in group A ( all P ＜0. 05 ),although acute attack and hospitalization were largely reduced. In comparison with baseline,6 months and 1 year,self-reported QOL, limitation of motion, stimulus avoidance and response, and disease concerns were significantly changed at 3 years. Conclusions Clinic center-based health management could benefit disease control and QOL of patients with asthma.