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.

Objective To investigate the variations of glomerular function in rabbits with partial unilateral ureteral obstruction (PUUO). Methods Thirty healty adult Japanese White Rabbits were randomly divided into the control group (6 rabbits) and the obstruction group (24 rabbits). The right PUUO model was established according to Cheng′s method. According to the PUUO duration, they were eaqually divided into four subgroups:the 7 day PUUO group, the 14 d PUUO group, the 28 d PUUO group and the 56 d PUUO group. The dynamic renal imaging was performed on all rabbits, and the glomerular filtration rate (GFR) was also calculated. The correlation between the renal function and PUUO duration was analyzed , and functional variations in the healthy kidneys were observed. Results (1)To the control group, no significant difference in the renal function was found between the left and the right kidneys (t = -0.145, P = 0.894). However, to the PUUO group, the right renal GFRs were significantly lower than the left renal GFRs (P < 0.05). (2) To the right renal GFR, significant difference was observed between the 7 day PUUO group and the control group (t = 5.066, P = 0.001),but not among the 7 day PUUO group, the 14 day PUUO group, the 28 day and the 56 day PUUO group (P > 0.05), (3)No significant differences were found in the left renal GFRs among the five groups. Conclusions The function of PUUO kidneys is characterized by an obvious decrease in the early stage, followed with a steady state. The basic function of the opposite healthy kidney does not present the compensation phenomenon.

Objective To study the expression of triggering receptor expressed on myeloid cells-1 (Trem-1)in psoriatic vulgaris and normal skin tissues and blood,and to explore the potential pathogenesis of psoriasis.Methods Immunohistochemistry and Real-time PCR were used to detect the expression of Trem-1 in the blood and tissues of normal skin and psoriasis.Results The positive expression rate of Trem-1 in psoriatic lesion was significantly higher than normal tissue.Trem-1 was expressed in the whole epidermis,with a significant difference (P<0.05). The mRNA expression of Trem-1 was significantly higher in psoriatic skin tissues and blood than in normal skin tissues and blood (P<0.05).Moreover,the mRNA expression of Trem-1 was positively correlated with PASI (P<0.05).Conclusion Abnormal expression of Trem-1 might be related to the pathogenesis of psoriasis.Trem-1 will cure psoriasis vulgaris as the potential therapeutic target.

Objective To investigate the clinical features , diagnosis and treatment of ectopic thyroid in order to avoid misdiagnosis and mismanagement .Methods Six cases of ectopic thyroid admitted to Fuzhou Gen-eral Hospital from Jan .2000 to Oct.2011 were retrospectively analyzed and the literatures were reviewed .Re-sults Three cases of ectopic thyroid were located in the anterior cervical area , 2 cases were at the base of the tongue and 1 case in the gall bladder .Two cases of aberrant thyroid were confirmed preoperatively in patients whose gland wasn't discovered by imaging examinations at the normal position of the thyroid gland .A symptomless individual of aberrant thyroid did not need other treatment but follow-up.One case with foreign body sensation in pharynx had a good response to thyroxine therapy .Four cases with accessory thyroid were operated because of misdiagnosis .Three cases were ectopic thyroid tissue and one was nodular goiter confirmed by pathology .None of these patients developed hypothyroidism after surgery .Conclusions Ectopic thyroid gland is a rare disease fre-quently misdiagnosed and mistreated .Goiters in the commonly location of ectopic thyroid gland such as the anteri-or cervical area and the base of the tongue should be paid special attention .Hormonal therapy or surgical inter-vention should be chosen according to clinical features , type of the goiter , thyroid function and whether it is be-nign or malignant .Long term follow-up and thyroid function tests are absolutely necessary .

Objective To discuss the clinical correlation between chronic prostatitis (CP) and erectile dysfunction (ED).Methods A retrospective analysis was made on the clinical data from patients who were diagnosed as CP in urology department of the First People's Hospital of Yunnan Province and the First Affiliated Hospital of Sun Yat-sen University.Patients' data were collected from July 2005 to July 2012.All the patients were diagnosed as CP based on their clinical manifestation,the NIH Chronic Prostatitis Symptom Index,prostatic fluid examination,routine urine examination and ultrasonography.The condition of erectile function was inquired on every patient and recorded.Results There were 4 315 patients diagnosed as CP in present study,while their age ranged from 17 to 64 years (average,31 years).Sixty-one (1.41％) patients were identified as moderate and severe types of ED (International Index of Erectile Function 5 ≤ 11),while 42 (0.97％) patients were confirmed as ED after they got CP.435/4 315 patients (10.08％)felt obviously sexuality descent after they got CP,and the sexuality was reported improved in 426/435 pa-tients after prostatitis symptomatic relief.Conclusions The incidence rate of ED in CP patients is not ob-viously higher than that in common community.And sexuality descent in patients might be caused by localindisposition and anxiety after CP.

More and more studies have found that red blood cell distribution width (RDW) can be used for acute pancreatitis (AP) classification, dynamic monitoring and evaluation of disease severity, mortality, prognosis and complication. Some inflammatory markers, such as procalcitonin (PCT), C-reactive protein (CRP), neutrophil-to-lymphocyte ratio (NLR) and pancreatitis scoring system are also associated with severity of AP, and can further improve the evaluation of AP severity when combined with RDW. This article reviewed the RDW and classification of AP, the dynamic changes of RDW and AP, RDW combined with inflammatory indices for prediction of severity of AP, and RDW combined with pancreatitis scoring system for prediction of severity of AP, so as to improve the understanding of predictive value of RDW in assessing the severity of AP.

Objective:To summarize the patient profiles and therapeutic efficacies of ABO-incompatible living-related kidney transplantations at 19 domestic transplant centers and provide rationales for clinical application of ABOi-KT.Methods:Clinical cases of ABO-incompatible/compatible kidney transplantation (ABOi-KT/ABOc-KT) from December 2006 to December 2009 were collected. Then, statistical analyses were conducted from the aspects of tissue matching, perioperative managements, complications and survival rates of renal allograft or recipients.Results:Clinical data of 342 ABOi-KT and 779 ABOc-KT indicated that (1) no inter-group differences existed in age, body mass index (BMI), donor-recipient relationship or waiting time of pre-operative dialysis; (2) ABO blood type: blood type O recipients had the longest waiting list and transplantations from blood type A to blood type O accounted for the largest proportion; (3) HLA matching: no statistical significance existed in mismatch rate or positive rate of PRA I/II between two types of surgery; (4) CD20 should be properly used on the basis of different phrases; (5) hemorrhage was a common complication during an early postoperative period and microthrombosis appeared later; (6) no difference existed in postoperative incidence of complications or survival rate of renal allograft and recipients at 1/3/5/10 years between ABOi-KT and ABOc-KT. The acute rejection rate and serum creatinine levels of ABOi-KT recipients were comparable to those of ABOc-KT recipients within 1 year.Conclusions:ABOi-KT is both safe and effective so that it may be applied at all transplant centers as needed.