Decision tree model of depressive symptoms among first grade students from multi ethnic middle schools in Yunnan Province / 中国学校卫生

Objective@#To understand the occurrence and predictive factors of depressive symptoms among multi ethnic middle school students in Yunnan Province, so as to provide a referential framework for schools to carry out targeted mental health education.@*Methods@#From October to December 2022, 8 500 first grade students from 23 middle schools were selected from 11 minority areas in Yunnan Province by cluster random sampling method. Demographic information and data relating to the students lifestyles were collected by questionnaire, and the Children s Depression Inventory (CDI) was used to evaluate depressive symptoms. Chi square test was performed to compare differences in the detection rate of depressive symptoms among first grade middle school students for univariate analysis. A decision tree model of depressive symptoms in middle school students was established by using the Chi squared automatic interaction detector (CHAID).@*Results@#The detection rate of depressive symptoms among first grade students from multi ethnic middle schools in Yunnan Province was 28.26%. The decision tree model of depressive symptoms was academic stress ( χ 2=469.08) at the first level, breakfast behaviors (low/moderate academic stress: χ 2=155.49; severe academic stress: χ 2=105.24) at the second level, and the number of close friends (low/moderate academic stress and consuming breakfast 0- 2 days weekly: χ 2=23.15; low/moderate academic stress and consuming breakfast 3-4 days weekly: χ 2=14.99; severe academic stress and consuming breakfast 0-2 days weekly: χ 2=29.26; severe academic stress and consuming breakfast 3-4 days weekly: χ 2=20.15), ethnicity ( χ 2=78.22) and drinking ( χ 2=50.36) at the third level ( P <0.01).@*Conclusions@#The study identifies academic stress, breakfast behaviors, number of close friends, drinking and ethnicity as predictive factors of depressive symptoms among multi ethnic middle school students in Yunnan Province. Schools should develop targeted strategies for preventing and managing depressive symptoms in middle school students, so as to reduce their occurrence.

Diagnosis and treatment analysis of renal pelvic hemangioma / 中华泌尿外科杂志

Renal pelvic hemangioma is a rare benign tumor, presenting with intermittent, total, painless, gross hematuria, accompanied by low back pain, abdominal pain or other symptoms in some cases. Four cases of pyelonephric hemangioma were treated, which were misdiagnosed as malignancy before surgery. For middle-aged patients with intermittent hematuria, if the imaging data cannot rule out renal pelvic hemangioma, it is recommended to perform renoscopy, renal artery angiography or renal puncture biopsy. For patients diagnosed with renal pelvic hemangioma, either partial nephrectomy, ureteroscopic cauterization, or selective renal artery embolization can achieve good results.

Development and clinical advancement of small molecules for ex vivo expansion of hematopoietic stem cell

Hematopoietic stem cell (HSC) transplantation is the only curative therapy for many diseases. HSCs from umbilical cord blood (UCB) source have many advantages over from bone marrow. However, limited HSC dose in a single CB unit restrict its widespread use. Over the past two decades, ex vivo HSC expansion with small molecules has been an effective approach for obtaining adequate HSCs. Till now, several small-molecule compounds have entered the phase I/II trials, showing safe and favorable pharmacological profiles. As HSC expansion has become a hot topic over recent years, many newly identified small molecules along with novel biological mechanisms for HSC expansion would help solve this challenging issue. Here, we will give an overview of HSC biology, discovery and medicinal chemistry development of small molecules, natural products targeting for HSC expansion, and their recent clinical progresses, as well as potential protein targets for HSC expansion.

The effects of wearing N95 masks on the quality of chest compressions and fatigue: a randomized manikin study / 中华急诊医学杂志

Objective:To evaluate the effects of wearing N95 mask on the quality of chest compression and fatigue.Methods:A total of 80 participants from Zhongnan Hospital with basic life support (BLS) certification conferred by American Heart Association (AHA) within two years were enrolled. After reviewing the key points of cardiopulmonary resuscitation (CPR) and grasping the operation on the manikin, they were randomized (random number) into two groups: wearing surgical masks (SM group, n=40) and wearing N95 masks (N95 group, n=40) during CPR. Each participant performed a 2-minute chest compression-only CPR on the manikin. Participants' height, body weight, Borg scores and physiological parameters before and after CPR were recorded. The quality of chest compression (including compression depth, compression rate, adequate depth proportions, adequate rate proportions, hand position and complete chest recoil) were recorded by Laerdal QCPR ? software. Student's t test and Mann-Whitney test were used to compare the differences of chest compression quality indexes between the two groups. Results:Compared with the SM group, participants in the N95 group had significantly increased median of Borg scores after CPR (16 vs 14, P=0.027), and decreased quality of chest compression, including the decline in compression depth (mean 47 mm vs 52 mm, P=0.020), compression rate (107 times/min vs 118 times/min, P=0.004), complete chest recoil rate (89.8% vs 98.1%, P=0.046), adequate depth proportions (67.4% vs 89.6%, P<0.01) and adequate rate proportions (60.6% vs 74.8%, P<0.01). Conclusions:Wearing N95 masks during CPR decreases the quality of chest compression and aggravates rescuers’ fatigue. Therefore, it is necessary to exchange rescuers more frequently to ensure the quality of chest compression when wearing N95 masks.

A case report of spermatic neuroblastoma / 中华泌尿外科杂志

The purpose of this study is to study the clinical characteristics of spermatic cord tumor.The clinical data of a case of varicocele in our hospital were analyzed retrospectively.In this case,the patients with varicocele had a good recovery after operation.Varicocele is a rare case.The best mode of treatment is surgical resection and follow-up after operation.

Effects of comprehensive restraint reduction program on preventing unplanned extu-bation among ICU patients with tracheal intubation / 中华护理杂志

Objective To explore the effects of comprehensive restraint reduction program on preventing un-planned extubation among ICU patients with tracheal intubation. Methods Totally 266 cases of ICU patients with tracheal intubation in our hospital were selected as the research objects using the convenient sampling method.They were divided into two groups by time: the experimental group of 130 cases implementing a comprehensive reduction constraint program and the control group of 136 cases using conventional physical restraint in nursing process.The constraint rate, constraint length, UEX incidence, skin and satisfaction of the two groups were compared. Results In the experimental group, the rate of physical restraint and UEX decreased, the average restraint length of each patient was shortened, skin integrity at the site of restraint improved, and the satisfaction of patients increased. Compared with the control group, the differences were statistically significant(P<0.01 or P<0.05). Conclusion The com-prehensive restraint reduction program can reduce the rate of physical restraint and the incidence of unplanned ex-tubation among ICU patients with tracheal intubation.

Repair of major chest wall defects caused by recurrent lesion or radiation ulcer after radical mastectomy with delto-pectoral flap / 中华内分泌外科杂志

Objective To evaluate a repair approach to major defects of chest wall caused by recurrent lesion or radiation ulcer after radical mastectomy.Methods The delto-pectoral island flaps were applied to repair major defects of chest wall.The blood supply of the flap was from the 2nd and 3rd anterior perforator of the internal mammary artery.4 patients with defects of chest wall caused by recurrent cancer lesion and 8 patients caused by radiation ulcer received the pedicled flap after resection of lesion or ulcer.Results All the 12 flaps survived,in which flap necrosis at the distal end occurred in 1 case and it was cured after changing dress.After a follow-up of 6 monthls to 4 years,the flap healed and the cosmetic effect was satisfactory.Conclusions This method is an ideal method for repair of stage I major defects of chest wall caused by recurrent lesion and radiation ulcer after radical mastectomy.

Magnetic Detection Electrical Impedance Tomography and its Application in Three Dimensional Localization of the Meridian / 中国医学物理学杂志

Objective: The Meridian Theory is an important component and the theory basis of Traditional Chinese Medicine. Three dimensional localization is the key to research of the Meridian Theory. Imaging is a scientific and practical method for the three dimensional localization of the meridian. Methods: The methods and actuality of the intrinsic quality and localization of meridians were first introduced. Then the methods and disadvantages of electrical impedance tomography (EIT) were also re-viewed. Based on these, the advantages and disadvantages of various methods applying to localization of meridian were analy-sised. Results: A new technology, magnetic detection electrical impedance tomography (MD-EIT) has obvious advantages com-paring to other EIT methods. It can fit comfortably on the dimentional localization of the meridian. Conclusions: MD-EIT can be applied not only to locate the meridians, but also to heart and lung detection and cancer diagnosis. There is a wide range of appli-cations for MD-EIT in medicine, It has great space for development.