Nephrology Research Articles

Changes of B cell-activating factor and a proliferation-inducing ligand in serum of children with Hen(o)ch-Sch(o)nlein purpura nephritis

Objective To investigate the changes of B cell-activating factor (BAFF) and a proliferation- inducing ligand (APRIL) in serum of children with Henoch- Schonlein purpura nephritis (HSPN), and to explore their role in the pathogenesis of children HSPN. Methods A total of 28 children with HSPN who were before treatment were selected in Department of Pediatrics Nephrology and Rheumatology, Shengjing Hospital of China Medical University from November 2017 to August 2018.Sixteen children with Henoch-Schonlein purpura were selected as HSP group, and 20 healthy children were selected as healthy control group.Followed the HSPN guideline to cure the patients for 6-8 weeks.The clinical data were collected.Serum levels of BAFF and APRIL were measured by adopting enzyme-linked immunosorbent assay (ELISA). Results (1)Changes of serum BAFF level: the serum levels of BAFF in HSPN children were significantly lower than those in the HSP group and the healthy control group[ HSPN group (0.652±0.360) μg/L, HSP group (1.276±0.459) μg/L, healthy control group (1.285±0.299) μg/L, F=17.519, P=0.000]. Moreover, the serum levels of BAFF in before treatment were significantly lower than those in after treatment [before treatment (0.652±0.360) μg/L, after treatment (0.860±0.262) μg/L, P 0.05). (2)Changes of serum APRIL level: the serum levels of APRIL in HSPN and HSP children were both significantly higher than those in healthy control group, but there were no marked differences between the 2 groups [HSPN group (2.285±1.015) μg/L, HSP group (2.609±1.264) μg/L, healthy control group (1.677±0.118) μg/L, F=3.647, P=0.016]. There were no significant differences in the serum levels of APRIL between before treatment and after treatment [ before treatment (2.285±1.015) μg/L, after treatment (2.042±0.695) μg/L, P>0.05]. (3)Pearson correlation analysis results showed that the serum levels of BAFF were negatively correlated with 24 h urinary protein, urinary microalbumin, and urine red blood cell count (r=-0.587, -0.608, -0.515, all P<0.05). The serum levels of APRIL were positively correlated with serum IgA(r=0.588, P<0.05). Conclusions The level of serum BAFF decreased and APRIL increased in children with HSPN, which was related to the degree of renal involvement.It suggests that BAFF and APRIL may be related to the pathogenesis of HSPN in children. Key words: Henoch- Schonlein purpura nephritis; Child; B cell-activating factor; Proliferation-inducing ligand

Changes and significance of serum Klotho protein levels in different stages of chronic kidney disease

Objective To explore the changes and significance of Klotho protein levels in different stages of chronic kidney disease (CKD). Methods From March 2015 to December 2017, 176 patients with CKD admitted to nephrology department of Inner Mongolia People's Hospital were selected as the study object (CKD group), and 80 healthy patients in our hospital were selected as the control group in the same period.The serum Klotho levels of CKD patients and control group at different stages were detected by double antibody sandwich ELISA, and the differences between each group were compared. Results The serum Klotho level of CKD group ((4.84±1.87) μg/L) was significantly lower than that of the control group ((9.11±3.14) μg/L)(t=13.82, P<0.01). One-way anova showed that estimated renal glomerular filtration rate (eGFR), serum albumin (ALB), hemoglobin (Hb), blood calcium (Ca) and serum Klotho were gradually decreased, while phosphorus (P) and creatinine (Cr) in serum were gradually increased, and the difference was statistically significant among the five stages(all P<0.01). Spearman correlation analysis showed that Klotho level was positively correlated with eGFR and Ca, and negatively correlated with CKD stage, Cr and P (r=0.369, 0.160, -0.200, -0.250, -0.230, all P<0.05). The multiple linear regression equation showed that Klotho level was positively and independently correlated with eGFR (t=3.89, P<0.001), and negatively correlated with CKD staging independently (t=-4.12, P<0.001). Conclusion The expression level of serum Klotho protein in patients with CKD is lower than that of healthy people, and it decreases with the increase of CKD stages, which is closely related to the deterioration of renal function.It can be used as a reference index to evaluate the incidence and severity of CKD. Key words: Chronic kidney disease; Klotho protein; Chronic kidney disease stage; Estimated glomerular filtration rate; Renal function

Inhibition of the renin-angiotensin system in the cardiorenal syndrome with anaemia: a double-edged sword.

: The term 'cardiorenal syndrome' (CRS) was introduced to describe problems related to the simultaneous existence of heart and renal insufficiency. The prevalence of anaemia in CRS is high and increases the risk of hospitalizations and death. Renin-angiotensin system (RAS) inhibition is the cornerstone therapy in cardiovascular and renal medicine. As angiotensin II regulates both glomerular filtration rate (GFR) and erythropoiesis, RAS inhibition can further deteriorate renal function and lower hematocrit or cause anaemia in patients with heart failure. The aim of this review is to explore the relationship among CRS, anemia and administration of angiotensin-converting enzyme inhibitor (ACEi) or angiotensin receptor blocker (ARB) and summarize the evidence suggesting that RAS inhibition may be considered an iatrogenic cause of deterioration of CRS with anemia. It should be emphasized however, that RAS inhibition reduces mortality in both groups with and without worsening of renal function, and therefore, no patient with CRS should be denied an ACEi or ARB trial without careful evaluation.

Venous injury caused by peripheral intravenous indwelling catheter and recovery

Objective To observe the correlation factors of venous injury caused by peripheral intravenous indwelling catheter, so as to guide the rational use of clinical intravenous indwelling catheter, so as to avoid venous injury and promote vascular recovery. Methods This study was carried out in five Class Ⅲ Grade A hospitals. In each hospital, we randomly selected one of the departments: Digestive Internal Medicine, Nephrology, Hepatobiliary Surgery, Extraglandular Surgery and Respiratory Medicine as the research departments. The inpatients admitted from March to June 2018 were selected and included in the study as a whole with the consent of the patients. In this study, 81 qualified patients were successfully injected with the peripheral intravenous indwelling catheter infusion and observed. According to the prescription of the doctors and hospital department policies, peripheral intravenous indwelling catheter was used for infusion. Specialists were arranged to record the patients' infused solution, evaluate the puncture site of the indwelling catheter before puncture and the results of venous blood vessel evaluation before puncture. Observe and record the reasons for the removal of indwelling catheter, the patency during the removal, the indwelling time, the marking of indwelling vein, evaluate and record the condition of the puncture site of indwelling catheter and the grade of phlebitis. The elasticity and filling degree of venous vessels were evaluated and recorded on the 14th day after catheter removal. Results (1) The severity of local phlebitis was positively correlated with the severity of vascular injury when removing intravenous indwelling catheter; the incidence of moderate and severe vascular injury was 9.09% when local symptoms were grade Ⅰ phlebitis; the incidence of moderate and severe vascular injury was 95.83% when local symptoms were grade Ⅱ and Ⅲ phlebitis when removing intravenous indwelling catheter; and there was statistical difference in the incidence of moderate and severe vascular injury between the two groups (P 0.05) . Conclusions Phlebitis after peripheral intravenous indwelling catheter infusion is the main cause of vascular injury and hinders venous recovery. Preventive measures should be taken in clinical puncture and use of venous indwelling needles; the removal of indwelling catheters should not be based only on indwelling time; the symptoms of puncture sites and patients' reactions should be evaluated in accordance with the regulations to avoid phlebitis above grade Ⅱ; in order to avoid vascular injury caused by infusion of peripheral intravenous indwelling catheters, asymptomatic removal of intravenous indwelling catheter is recommended. Key words: Phlebitis; Peripheral intravenous indwelling catheters; Blood vessel recovery; Vascular injury; Indwelling time; Indicators for removal of catheter

Risk factors for large hematoma complication caused by percutaneous renal biopsy which guided by ultrasound and related nursing care

Objective To analyze the risk factors for large renal hematoma caused by percutaneous renal biopsy (PRB) in order to provide evidence for early clinical prevention and Effective nursing. Methods The data of 707 patients who underwent PRB in nephrology department in Hangzhou Hospital of Traditional Chinese Medicine from January 2016 to January 2017 were retrospectively identified. Demographic and clinical data were collected, including general status (gender, age, body mass index, histological diagnosis, associated diseases), laboratory indexes and related examination during PRB (serum creatinine, estimated glomerular filtration rate, creatinineclearance rate, serumuricacid, serumalbumin, hemoglobin, platelet count, prothrombin time, activated partial thromboplastin time, kidney size), blood pressure(history of hypertension, systolic blood pressure, diastolic blood pressure and mean arterial blood pressure before PRB). Univariable logistic regression analysis, linear diagnosis, factor analysis, multivariable logistic regression analysis and receiver operating characteristic curve (ROC curve) were used to assess risk factors. Results Over the period, 707 native kidney biopsies were performed. Hematoma occurred in 609 biopsies (86.1%), including 558 minorhematomacases (78.9%), 51 largehematoma cases (7.2%), no severe complications were observed. Univariable logistic regression analysis of risk factors in 51 patients with large hematoma after PRB found that there were significant differences in renal tubulointerstitial fibrosis, crescents > 25%, serum creatinine, history of hypertension, systolic blood pressure, diastolic blood pressure and mean arterial pressure before PRB (P 0. 05). Conclusions History of hypertension and blood pressure before PRB were independent risk factors for large renal hematoma after PRB.Patients with history of hypertension were more likely to develop large hematoma than those with no history of hypertension, and those with higher blood pressure before PRB were more likely to develop large hematoma. The history of hypertension and the blood pressure before PRB have certain effect in predicting the formation of large hematoma after PRB. Each of them have a certain predictive effect on the formation of largehematoma after PRB, and the prediction effect trend of blood pressure before PRB is slightly better than that of history of hypertension. Key words: Renal biopsy; Large hematoma; Risk factor

Hocus POCUS in Nephrology: is it time for magic?

Hocus POCUS in Nephrology: is it time for magic?

Analysis and management of drug related problems on a nephrology ward from a pharmacist's point of view.

The main goal of the study was to determine the incidence and the character of drug related problems (DRPs) identified in chronic kidney disease patients by the clinical pharmacist at the nephrology department. As secondary objective, the aim was to identify the frequency and character of DRPs of selected high risk drugs in medication reviews. The clinical pharmacist reviewed patients' medication records and made drug therapy-related recommendations to physicians. The clinical pharmacists' interventions were categorized using an adaptation of the Pharmaceutical Care Network Europe. During the study period (January 2016 - June 2018) the clinical pharmacist performed 1192 interventions in 1870 adult patients admitted to the Nephrology Department. The most frequent DRP was untreated indication 324 (27.18%) of all interventions, and incorrect dose 248 (20.81%). Anti-infectives were identified as the drug category with the highest frequency of interventions. Almost 93% of all interventions were accepted by the attending physicians. Still within the second objectives, underdosing was observed as the most frequent problem for renally excreted drugs. It was found that an incorrect dose is a very frequent issue at the nephrology department. Surprisingly, the main problem was underdosing. In the category of renally excreted drugs, underdosing was observed in antithrombotics and antivirals. The above- mentioned results prove the need of a clinical pharmacist, preferably in sense of maximizing of the treatment effect and improving the care of patients.

Design and clinical application of peritoneal dialysis tube to prevent breakage

Objective To design the protection of peritoneal dialysis catheter and solve the problem of broken peritoneal dialysis catheter during clinical use. Methods A total of 94 patients with end-stage renal disease who received newly opened peritoneal dialysis in the Department of Nephrology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology from January 2016 to December 2017 were selected as research objects. In order of the time of tube opening, 47 patients with singular ordinal number receiving treatment were set as the control group, and 47 patients with even ordinal number receiving treatment were set as the observation group. The patients of control group, using the traditional peritoneal dialysis tube nursing; the patients of observation group, using anti - broken peritoneal dialysis tube for nursing. To observe and compare the incidence of dialysis catheter loosening and breakage during dialysis in the 2 groups of peritoneal dialysis patients, as well as the patient satisfaction. Results The catheter crease deformation of the observation group(0 case) was significantly lower than that of the control group (12 cases), and the difference was statistically significant (χ2=13.610, P 0.05). Conclusions The improved peritoneal dialysis catheter is more convenient, safe and effective for long-term peritoneal dialysis patients, and it can reduce the incidence of peritonitis associated with peritoneal dialysis catheter, which is worthy of clinical application. Key words: Nursing care; Peritoneal dialysis; Wreck; Catheter associated peritonitis; Catheter fixed

Urinary biomarkers: on the long road to personalized renal transplant medicine.

Urinary biomarkers: on the long road to personalized renal transplant medicine.

Epidemiological status of metabolic syndrome and its correlation with renal damage in Shanghai Chongming rural areas

Objective To investigate the prevalence of metabolic syndrome in adults in Shanghai Chongming area and to analyze the relationship between metabolic syndrome and chronic kidney disease. Methods A total of 7 679 residents aged 30 years and over in Chongming District of Shanghai were randomly sampled and investigated by questionnaires, physical examinations, and laboratory examinations. The metabolic syndrome was diagnosed by the diagnostic criteria of metabolic syndrome according to the Chinese Guidelines for the Prevention and Treatment of Type 2 Diabetes in 2017. According to the criteria of the International Society of Nephrology Working Group on Improving the Overall Prognosis of Kidney Diseases, estimated glomerular filration rate (eGFR)<60 ml·min-1·(1.73 m2)-1 was diagnosed as chronic kidney disease. Results The prevalence of metabolic syndrome was 38.61% in the total population. The prevalence of metabolic syndrome was 47.06% in males and 34.71% in females. Urinary albumin-creatinine ratio (ACR), eGFR, age, smoking, waist circumference, blood glucose, blood pressure, high density lipoprotein-cholesterol and triglyceride in metabolic syndrome group were significantly higher than those in non- metabolic syndrome group. With the increase of metabolic components, eGFR decreased, and ACR increased. According to logistic regression analysis, age, male, hyperglycemia, hypertension, hypertriglyceride were risk factors for eGFR. Male, hypertension, hyperglycemia, hypertriglyceride, central obesity, smoking history, lower education level were risk factors for ACR. Conclusion The number of metabolic components is related to renal damage. Male, hypertension, hyperglycemia, hypertriglyceride are risk factors for early renal damage. Key words: Metabolic syndrome; Chronic kidney disease; Epidemiology

The Effects of Food Insecurity on Children with Chronic Kidney Disease

In a prior study, children in a pediatric nephrology outpatient clinic were more than twice as likely not to have adequate food than children in the

Comparison of clinical effect of different dialysis frequency and methods in the treatment of chronic renal failure uremic patients

Objective To observe the clinical efficacy of different dialysis frequency and methods in the treatment of chronic renal failure uremia patients, and to provide a reliable reference for clinical practice. Methods From February 2016 to February 2017, 140 chronic renal failure uremic patients who admitted to the Department of Nephrology at Taizhou Central Hospital were selected and divided into the observation group and the control group by complete random distribution method, with 70 cases in each group.The patients in the control group received 3 times of regular hemodialysis treatment per week, while the observation group received 3 times of regular hemodialysis combined with 1 time of hemodiafiltration treatment per week.The clinical treatment effects and complications of the two groups were compared. Results Compared with blood uric acid(BUA)[(532.09±71.05)mmol/L], serum creatinine(Scr)[(734.34±63.08)μmol/L], blood urea(BUN)[(23.84±2.58)mmol/L], serum phosphorus[(1.98±0.37)mmol/L], parathyroid hormone(PTH)[(464.37±113.92)ng/L], β2 microglobulin(β2-MG)[(13.48±6.38)mg/L]in the control group, BUA[(495.89±58.23)mmol/L], Scr[(684.34±77.32)μmol/L], BUN[(20.62±1.77)mmol/L], serum phosphorus[(1.74±0.44)mmol/L], PTH[(352.14±123.25)ng/L], β2-MG[(9.58±5.45)mg/L] were significantly lower in the observation group, the differences were statistically significant (t=3.29, 4.19, 8.61, 3.49, 5.59, 3.88, all P 0.05). Conclusion Hemodialysis 3 times combined with 1 time of hemodiafiltration per week has significant advantage in the treatment of chronic renal failure uremia patients, which can effectively remove urine toxin molecules and reduce the incidence of complications, and it is worthy of clinical application. Key words: Renal failure, chronic; Uremia; Hemodialysis; Hemodiafiltration; Comparative effectiveness research

Progresses on the quality of life of children with chronic kidney disease

The health-related quality of life (HRQoL) is the individual subjective evaluation of disease and treatment on their physical, mental and social health status, and is an important part of health and medical services.Chronic kidney disease (CKD) is a kind of diseases that has lasted for more than 3 months of abnormal renal structure or function.It is one of the diseases that seriously affect children′s HRQoL.This article reviews the emergence, development, evaluation tools of children′s HRQoL and its application in the field of nephrology. Key words: Health-related quality of life; Chronic kidney disease; Child

Primary vesicoureteric reflux in 72 children

Objective To summarize the treatment and prognosis of children with primary vesicoureteric reflux (PVUR) and the correlation between PVUR and urinary tract infections(UTI). Methods The children with PVUR (72 cases) who were hospitalized at the Department of Nephrology and Urology of Children′s Hospital Affiliated to Capital Institute of Pediatrics from June 2007 to April 2018 were selected, and the clinical manifestations were summarized. Results A total of 72 patients (52 boys, 20 girls) were involved, and the median age at diagnosis was 8 months, in which 44 cases (61.1%) were less than 1 year old.There were 55 cases with UTI onset (76.4%), 94.5%(52/55 cases) with recurrent UTI(twice or more than twice) and 2 cases (2.8%) ended with renal failure.Refluxes were unilateral in 34 patients and bilateral in 38 patients.There were 110 ureters, in which 74 reflux ureters (67.3%) were identified as low-grade (Ⅰ-Ⅲ) PVUR, and 36 reflux ureters(32.7%) were high-grade (Ⅳ-Ⅴ) PVUR.Forty patients received conservative treatment, and significant differences of the remission rate were observed between group Ⅰ-Ⅱ grade PVUR(72.2%, 13/18 cases) and group Ⅲ-Ⅴ grade PVUR(32.5%, 13/40 cases)(χ2=7.92, P=0.005). Twenty-two patients (35 reflux ureters) underwent surgical treatment, in which 31 ureters were cured, and the remission rate was 88.6%.Ten patients with refluxes grade Ⅲ or above had no improvement after medical treatment, but the reflux was completely relieved after surgical treatment. Conclusions Children with recurrent UTI, especially less than 1 year-old, should be considered with PVUR.The conservative treatment could be prior for the patients with Ⅰ-Ⅱ grade PVUR.The surgical treatment could be chosen for those patients who suffered from high-grade PVUR, bilateral reflux or failed conservative treatment, especially with recurrent UTI, and reflux nephropathy could be reduced then. Key words: Vesicoureteric reflux; Urinary tract infection; Child

Analysis of drug resistance and risk factors of community-acquired urinary tract infection caused by extended-spectrum β-lactamase-producing Escherichia coli in children

Objective To investigate the drug resistance and risk factors of community-acquired urinary tract infection(UTI) caused by extended-spectrum β-lactamase(ESBLs)-producing Escherichia coli in children. Methods The clinical data of 125 children with community-acquired urinary tract infection caused by Escherichia coli were analyzed, who were hospitalized at Department of Pediatric Nephrology of Tianjin Children′s Hospital from June 2017 to June 2018.The ESBLs-producing group and the non ESBLs-producing group were named depending on the production of the ESBLs.WHONET 5.6 bacterial resistance monitoring software was used to calculate the drug resistance rate of bacteria.The drug resistance rate and clinical data were analyzed by adopting χ2 test and Fisher′s exact probability method, then, factors with statistical significance identified by single factor analysis were further analyzed by multivariate Logistic regression analysis. Results Among 125 strains of Escherichia coli, 68 strains(54.4%) were ESBLs-producing Escherichia coli and 57 strains(45.6%) were non ESBLs-producing.The drug resistance rates of ESBLs-producing Escherichia coli to penicillins, cephalosporins, quinolones and monocyclic beta-lactams were higher than those of non ESBLs-producing strains, and the drug resistance rates to Ampicillin, Piperacillin, Cefazolin, Cefuroxime, Ceftriaxone and Cefotaxime were nearly 100%.The resistance rates of ESBLs-producing strains to Imipenem, Meropenem, Amikacin, Furantoin, Cefotetan and Piperacillin/Tazobactam were lower (< 5%). Univariate analysis showed that there were significant differences in recurrent UTI (χ2=12.043, P<0.01) and use of third-generation cephalosporins in the past 3 months(χ2=28.545, P<0.01) between ESBLs-producing group and non ESBLs-producing group.Multivariate Logistic regression analysis showed that use of third-generation cephalosporins in the past 3 months was an independent risk factor of community-acquired UTI caused by ESBLs-producing Escherichia coli(OR=11.285, 95%CI: 3.140-39.134, Wald=13.972, P<0.01). Conclusions The isolation rate of ESBLs-producing Escherichia coli in children with community-acquired UTI is high, and the drug resistance rate is high, so children who used third-generation cephalosporins in the past 3 months were more likely to develop community-acquired UTI caused by ESBLs-producing Escherichia coli. Key words: Urinary tract infection; Escherichia coli; Extended-spectrum β-lactamase; Child

Clinical significance of detection of urine renal injury biomarkers in children with primary nephrotic syndrome

Objective To investigate the clinical significance of detection of urine renal injury biomarkers in children with primary nephrotic syndrome (PNS). Methods Seventy-nine children with PNS at the Department of Nephrology, Tianjin Children′s Hospital were enrolled from January to December 2016, who were given sufficient glucocorticoid for 4 weeks.According to the response to glucocorticoid, they were divided into steroid-sensitive nephrotic syndrome (SSNS) group (63 cases) and steroid-resistant nephrotic syndrome (SRNS) group (16 cases), then they were divided into simple type and nephritic type according to diagnostic criteria.Urinary levels of microalbuminuria (MAlb), transferrin (TfR), retinal binding protein (RBP), N-acetyl-β-D-glucosaminidase (NAG), α1-microglobulin (α1-MG) and β2-microglobulin (β2-MG) were measured in the children before and after treatment, and the data were analyzed by the statistical method. Results Before treatment, the levels of RBP, NAG, α1-MG and β2-MG in the SSNS group [0.91(1.80) mg/L, 28.00(31.5) U/L, 8.40(14.2) mg/L, 0.45(0.35) mg/L]were lower than those in SRNS group[3.94(4.82) mg/L, 37.10(18.20) U/L, 11.10(21.42) mg/L, 0.66(1.41) mg/L], and the differences were statistically significant (all P<0.05); After treatment, the MAlb, TfR, RBP, NAG, α1-MG, β2-MG in the SSNS group [14.10(5.60) mg/L, 0.40(1.60) mg/L, 0.26(0.38) mg/L, 7.90(9.10) U/L, 2.00(4.40) mg/L, 0.27(0.35) mg/L] were lower than those before treatment[MAlb: 1 704.00(1 995.60) mg/L, TfR: 142.10(81.90) mg/L] and those after treatment in the SRNS group[557.90(1 857.17) mg/L, 117.40(102.10) mg/L, 4.19(5.15) mg/L, 38.80(32.43) U/L, 10.85(16.60) mg/L, 0.63(0.91) mg/L], and the differences were statistically significant (all P<0.05). However, before and after treatment, except for MAlb[before treatment: 2 258.75(2 028.43) mg/L], the indicators in the SRNS group were not significantly improved.Before treatment, the RBP in the SRNS group was significantly higher than that in the SSNS group in children with simple type PNS, and the RBP, NAG, α1-MG and β2-MG in the SRNS group were significantly higher than those in the SSNS group in children with nephritic type PNS (all P<0.05). According to receiver operating characteristic curve, there were obvious differences in the urinary levels of RBP, NAG and β2-MG, and area under curve(AUC) was 0.858, 0.837 and 0.679, respectively, all of which were <0.9, so the value of diagnosis was not high.Logistic regression analysis was used to identify RBP and NAG as influencing factors and to establish a model.Through the combined detection of these two indicators, the diagnostic value was higher (AUC was 0.956), and when the diagnostic sensitivity was 93.8%, the specificity could reach 82.5%. Conclusions Urinary RBP, NAG, α1-MG and β2-MG can early reflect tubular interstitial impairment in children with PNS, especially SRNS.Combined detection of RBP and NAG has certain value in predicting the efficacy of glucocorticoid. Key words: Primary nephrotic syndrome; Microalbuminuria; Transferrin; Retinal binding protein; N-acetyl-β-D-glucosaminidase; α1-microglobulin; β2-microglobulin

Risk factors of mortality in peritoneal dialysis patients

Objective To explore the risk factors affecting the death of peritoneal dialysis patients. Methods The clinical data of 275 patients with peritoneal dialysis who place a peritoneal catheter in the Department of Nephrology, First Affiliated Hospital of Guangxi Medical University and had regular peritoneal dialysis for more than 3 months from January 1, 2005 to December 31, 2015 were retrospectively analyzed.Sixty patients died in the observation group, and 215 patients who continued regular peritoneal dialysis were in the control group.Univariate analysis and two-class logistic regression analysis were used to analyze risk factors for death. Results The composition ratio of the primary disease to diabetic nephropathy in the death group and the control group was 15.0% (9/60) and 5.6% (12/215), respectively, the average age of patients entering peritoneal dialysis was (50.6±14.3) years old and (45.7±13.2) years old, respectively(t=-2.518), glomerular filtration rates were 6.0(4.5, 9.4) and 5.1(4.2, 6.6), respectively, blood potassium is (4.2±0.7) mmol/L and (4.5±0.7) mmol/L, respectively, serum creatinine was 721.0 (585.0, 891.3) μmol/L and 847 (723.3, 1 033.3) μmol/L, respectively, there were significant differences between the two groups (t=2.14, all P<0.05). Logistic regression analysis indicated that the primary disease was diabetic nephropathy, and the age of admission to peritoneal dialysis, glomerular filtration rate, blood uric acid are risk factors for death in peritoneal dialysis patients. Conclusion Diabetic nephropathy, age, glomerular filtration rate, and blood uric acid level are independent risk factors for death in peritoneal dialysis patients. Key words: Peritoneal dialysis; Glomerular filtration rate; Risk factors

Residents’ Perception of the Nephrology Specialty

Residents’ Perception of the Nephrology Specialty

Renal Biopsy Recommendation Based on Text Understanding.

Due to various etiologies and pathogenesis of kidney diseases, an invasive procedure called renal biopsy may be needed to determine the specific type of kidney disease, its severity, and the best treatment for it. This study aims to detmine if a text understanding technology based on admission records can recommend such an invasive procedure objectively. To understand clinical documents from nephrology, a semi-automatic learning-based lexicon construction method based on CRF and Word2vec was used. We constructed a dictionary of symptom terms for the nephrology department from clinical document, and then extracted patients' symptoms and detected their negation from admission notes. Combined with the preliminary diagnosis given by the doctor, an eigenvector was produced and fed to a machine learning classifier. When compared to the gold standard marked by physicians, the final recommendation achieved 83.5% accuracy, 80.6% precision, 76.6% recall, and 78.6% f1-measure respectively.

Comparison of renal arterial resistive index in type 2 diabetic nephropathy stage 0-4.

Chronic kidney disease (CKD) is one of world health problems and its prevalence and incidence is increasing. Chronic Kidney Failure involves a range of pathophysiologic processes that are associated with impaired renal function, leading to cardiovascular morbidity and mortality. Renal artery resistive index (RI) is indicator of atherosclerotic change in small vessels. The current study was aimed to assess RI in diabetic nephropathy patients at stage 0-4 and to compare RRI with HbA1c, systolic blood pressure, diastolic blood pressure, albuminuria and glomerular filtration rate (GFR). In this cross sectional study,100 diabetic nephropathy patients who attend to nephrology clinic of Ali-ibn Abi Talib Hospital were entered to the study. Ultrasound Doppler renal resistive index was measured and other information was recorded from their last lab data that was recorded in their medical records. Variable included: systolic blood pressure, diastolic blood pressure, albuminuria, GFR, HbA1c. All data was analyzed by Pearson's Correlation Coefficient. The findings indicated a significant correlation of RI with systolic BP (p=0.04 R=0.75), microalbuminuria (P=0.001 R=0.67), and GFR (P=0.001 R=0.76), while diastolic BP (P=0/45 R=0/32), HbA1c (P=0/56 R=0/43) were not found to be associated with RI. The findings indicated that increased systolic blood pressure, albumin excretion (microalbuminuria) and severity of disease were capable of increasing RI values in diabetic nephropathy patients. In addition, decreased GFR.