Advance in postnatal catch-up growth and insulin resistance in small for gestational age infants / 中华围产医学杂志

Small for gestational age (SGA) infants usually result from fetal growth restriction. After eliminating harmful factors, catch-up growth occurs in most SGA as a compensatory mechanism of children's growth and development. Many studies conclude that catch-up growth could lead to insulin resistance early in life. However, the mechanism remains unclear, which results in a lack of clinical intervention to reduce or even avoid insulin resistance. This review sums up studies on catch-up growth and insulin resistance. It describes the possible mechanism of suppressed thermogenesis and catch-up fat, stress, inflammation, DNA methylation, etc., to provide a theoretical foundation for clinical practice.

Effects of visual restoration on dynamic plantar pressure features in elder individuals / 北京大学学报(医学版)

OBJECTIVE@#To analyze the effects of visual restoration after cataract surgery on plantar pressure and biomechanics of foot in elder individuals.@*METHODS@#Thirty-two patients [male/female 5/27, (70.1±5.2) years old] with age-related cataract were recruited between October 2016 and December 2019. The footscan system was employed to record the data of plantar pressure during level walking before and 1-month after the cataract surgery. Parameters of peak pressure (PP), impulse (I), pressure-time integral (PTI) and time to peak pressure (TPP) from the regions of the 1st toe (T1), 2nd to 5th toes (T2-5), 1st to 5th metatarsal heads (M1-M5), midfoot (MF), medial hindfoot (HM) and lateral hindfoot (HL) were analyzed respectively.@*RESULTS@#Post-operatively, the visual function was effectively reconstructed with improved visual acuity in both eyes (Z=-4.878, -4.801; P < 0.001). The PP (t=2.266, P=0.031) and I (t=2.152, P=0.039) values in M2 region on the dominant side (right foot) increased statistically at post-operative phase, while the changes of pressure and temporal para-meters in other regions remained stable. There was laterality in plantar pressure at pre-operative phase, manifested as greater PP values in M1, M2, MF, and HM regions on the dominant sides (t=-2.414, -2.478, -2.144, -5.269; P < 0.05), greater PP values in T1, M3, M5 and HL regions on the non-dominant sides (t=4.830, 3.155, 2.686, 3.683; P < 0.05), greater I values in M1, MF, and HM regions on the dominant sides (t=-2.380, -2.185, -5.320; P < 0.05) and greater I values in T1, M3, M5 and HL regions on the non-dominant sides (t=4.489, 2.247, 2.838, 3.992; P < 0.05). post-operatively, the pressure tended to be compatible between the two sides in regions of M3 and MF, while the magnitude of laterality in regions of M1 (ZPP△= -2.721, P=0.007; ZI△=-2.581, P=0.010), M2 (ZPP△=-2.674, P=0.007; ZI△=-2.375, P=0.018) and M5 (ZPP△=1.991, P=0.046; ZI△=2.150, P=0.032) was further increased.@*CONCLUSION@#Changes in plantar pressure after cataract surgery were characterized as increased pressure in the 2nd metatarsal head area on the dominant side. Visual restoration might intensify the laterality in the medial of forefoot on the dominant side and the lateral of forefoot on the non-dominant side.

Difference in efficacy between antibiotic lock technique and intramuscular injec- tion for the treatment central venous catheter-related infection in rabbit model / 中国感染控制杂志

Objective To compare the efficacy of antibiotic lock technique (ALT)and systemic medication on the treatment of central venous catheter-related infection(CRI).Methods Catheters which had been formed bacterial biofilm in vitro were implanted into the central venous of rabbits,and rabbits were randomly divided into two groups,catheter group received the injection of mixture of antibiotics and heparin,systemic group received intra-muscular injection of antibiotics and intraductal injection of heparin solution.Medicine was given continuously for 10 days,catheter blood and peripheral venous blood were taken every day before replacing the medicine,bacterial colo-ny counts were detected.All rabbits stopped using antibiotics on day 11,then removed catheters after a 5-day ob-servation of catheterization.Before extubation,the catheter blood and peripheral blood were collected to perform bacterial colony counting and antimicrobial susceptibility testing,and removed catheters were performed catheter tip bacterial culture and observation of biofilm.Results During the medication period,the average bacterial counts of catheter blood in catheter group at different time were all lower than systemic group,difference was statistically sig-nificant(all P < 0.05);from the 4th day,the catheter group gradually appeared positive specimens of peripheral blood culture(a total of 6 cases),and systemic group appeared positive specimens on the second day(a total of 31 ca-ses).During medicine withdrawal period,bacterial counts of catheter blood in two groups on the day of extubation were both higher than those on the day of medicine withdrawal,differences were both statistically significant(both P<0.05).On the day of medicine withdrawl,2 cases in catheter group and 8 cases in systemic group were isolated bacteria from peripheral blood;there was no new positive specimens in catheter group on the day of extubation,but there was 1 new positive specimen in systemic group.Catheter tip bacterial count in systemic group was higher than catheter group ([8.02±0.05]log10 CFU/mL vs [3.12±0.14]log10 CFU/mL,t =26.82,P <0.05).33.33% of specimens in catheter group could be observed scattered biofilm,while all specimens of systemtic group were cov-ered by biofilm.Bacterial culture and antimicrobial susceptibility testing of catheter blood and peripheral blood be-fore extubation revealed that diameter of the zone of inhibition in catheter group ranged 19-20 mm,in systemic group ranged 15 - 16 mm,bacteria from two groups were all sensitive to commonly used antimicrobial agents. Conclusion In the treatment of central venous CRI,the effect of ALT on local clearance of bacteria is better than that of systemic administration,and it can significantly reduce systemic infection.However,if bacterial biofilm in the catheter is not completely cleared,infection can still relapse after medicine withdrawal.Therefore,accurate dos-age and medication time is worthy of further quantitative study.

Difference in efficacy between antibiotic lock technique and intramuscular injec- tion for the treatment central venous catheter-related infection in rabbit model / 中国感染控制杂志

Objective To compare the efficacy of antibiotic lock technique (ALT)and systemic medication on the treatment of central venous catheter-related infection(CRI).Methods Catheters which had been formed bacterial biofilm in vitro were implanted into the central venous of rabbits,and rabbits were randomly divided into two groups,catheter group received the injection of mixture of antibiotics and heparin,systemic group received intra-muscular injection of antibiotics and intraductal injection of heparin solution.Medicine was given continuously for 10 days,catheter blood and peripheral venous blood were taken every day before replacing the medicine,bacterial colo-ny counts were detected.All rabbits stopped using antibiotics on day 11,then removed catheters after a 5-day ob-servation of catheterization.Before extubation,the catheter blood and peripheral blood were collected to perform bacterial colony counting and antimicrobial susceptibility testing,and removed catheters were performed catheter tip bacterial culture and observation of biofilm.Results During the medication period,the average bacterial counts of catheter blood in catheter group at different time were all lower than systemic group,difference was statistically sig-nificant(all P < 0.05);from the 4th day,the catheter group gradually appeared positive specimens of peripheral blood culture(a total of 6 cases),and systemic group appeared positive specimens on the second day(a total of 31 ca-ses).During medicine withdrawal period,bacterial counts of catheter blood in two groups on the day of extubation were both higher than those on the day of medicine withdrawal,differences were both statistically significant(both P<0.05).On the day of medicine withdrawl,2 cases in catheter group and 8 cases in systemic group were isolated bacteria from peripheral blood;there was no new positive specimens in catheter group on the day of extubation,but there was 1 new positive specimen in systemic group.Catheter tip bacterial count in systemic group was higher than catheter group ([8.02±0.05]log10 CFU/mL vs [3.12±0.14]log10 CFU/mL,t =26.82,P <0.05).33.33% of specimens in catheter group could be observed scattered biofilm,while all specimens of systemtic group were cov-ered by biofilm.Bacterial culture and antimicrobial susceptibility testing of catheter blood and peripheral blood be-fore extubation revealed that diameter of the zone of inhibition in catheter group ranged 19-20 mm,in systemic group ranged 15 - 16 mm,bacteria from two groups were all sensitive to commonly used antimicrobial agents. Conclusion In the treatment of central venous CRI,the effect of ALT on local clearance of bacteria is better than that of systemic administration,and it can significantly reduce systemic infection.However,if bacterial biofilm in the catheter is not completely cleared,infection can still relapse after medicine withdrawal.Therefore,accurate dos-age and medication time is worthy of further quantitative study.

Application of color vision tests on the diagnosis and treatment for common ocular fundus diseases / 国际眼科杂志(Guoji Yanke Zazhi)

?Color vision has been an important part of the human visual function.It is determined by the phytochrome of cone.In many clinical cases of ocular fundus diseases, patients had color vision loss, which shows that color visions tests is necessary and meaningful.At present, doctors have not paid attention to it and adopt the tests rarely. The article summarizes the tests of color in common use and applications on the diagnosis and treatment for common ocular fundus diseases to be a theory basis.

Literature analysis and comparison on basic information of scientific papers subject in Chinese journals of nursing nearly six years / 中国实用护理杂志

Objective To know the nursing scientific research status in recent years,and to reveal the differences between Chinese nursing scientific researches and foreign nursing scientific researches,in order to promote the rapid development of nursing cause in China.Methods Five Chinese journals of nursing and four foreign nursing journals were analyzed covered China National Knowledge Infrastructure (CNKI),PubMed and Google data ranged from 2008 to 2013.By adopting bibliometrics method,regional distribution,the number of people participation,the cooperation between units,the source of financial funding,research content and nature of Chinese nursing research papers were analyzed,and also compared to research content and nature of foreign nursing journals.Results The amounts of published papers were 1 527 pieces.The geographical distribution of research papers were all spread over 28 provinces,autonomous regions sand municipalities directly under the central government,most of which was Guangdong province [12.64％ (193/1 527)];The majority of research papers were completed by single unit and more than five people,which about [68.4％(1 045/1 527)],[38.6％(589/1 527)],respectively;Provincial level of research papers were more than national level [81.4％(1 243/1 527) vs.18.6％(284/1 527)];The papers focused on the clinical nursing research [37.8％(577/1 527)] and clinical basic nursing research [34.6％(529/1 527)].Almost researches were descriptive research,while 40.7％(622/1527) of which were clinical analysis.Foreign nursing scientific researches paid more attention to psychological research and nursing profession which were related to humanities and investigation was major method used;Compared with the foreign nursing papers at the same time,the number of Chinese nursing research papers increased rapidly (P ＜ 0.05);Papers were completed more than five units rapidly increased compared with the pre-upgrade,as well as the national subjects,the difference was statistically significant (P ＜ 0.05).Conclusions The number of nursing research programs tended to increase year by year and the enthusiasm of nurses participating in scientific research was higher than before.Different units needed to further strengthen cooperation in scientific research.The research content and direction were diversity,which had not yet formed central tendency.The research method was still limited to descriptive studies,and the creativity of the research methods was needed,especially laboratory research.

Effectiveness analysis of modification and care improvement in endotracheal tubes on prevention of ventilator-associated pneumonia / 中国实用护理杂志

Objective To evaluate the efficacy of modification and care improvement in endotracheal tubes (ETTs) to prevent ventilator associated pneumonia (VAP) in patients receiving mechanical ventilation (MV).Methods PubMed,China National Knowledge Infrastructure (CNKI) were searched,literature information was extracted and classified according to the inclusion criteria,the data were statistically analyzed.Results Totally 46 clinical research articles and 6 laboratory research articles were involved,the data showed that polyurethane (PU) cuff [23.809％ (35/147)],silver-coated ETTs [4.830％ (37/766)],subglottic drainage duct [19.492％ (759/3 894)],discontinuous subglottic drainage[13.603％ (256/1 882)] were associated with a decreased incidence of VAP compared with polyvinyl (PVC) cuff [40.179％ (45/112)],non-silver-coated ETTs [7.537％ (56/743)],conventional ETTs[45.733％ (1 088/2 379)],continuous subglottic drainage [25.000％ (503/2 012)],the differences in the incidence of VAP were statistically significant,respectively,P＜ 0.05.The incidence of VAP in cylindrical PU cuff was 25.000％ (8/32),the tapered PU cuff was 21.875％ (7/32),the difference in the incidence of VAP was not statistically significant.Conclusions The modification of the ETTs and the care improvement can effectively reduce the incidence of VAP.