La mortalidad de los pacientes en hemodiálisis está asociada con su situación clínica al comienzo del tratamiento

IntroductionPrevious reports have shown very high mortality among hemodialyisis patients. Our goal was to analyze the mortality of patients in the Renal Registry of Patients who remained exclusively on hemodialysis treatment.MethodsThe cohort of patients who started treatment in the community of Castilla-La Mancha between 2010 and 2012 and remained on hemodialysis treatment was analysed until the end of 2017. Age, sex, primary kidney disease, vascular access, hemoglobin, Charlson index and serum albumin were included.ResultsMortality rate was 63.4% after 5 years and 76% at the end of the study, with no difference between males and females, and was linked to an older age, urgent onset or in those with acute deterioration of chronic kidney disease, the use of catheters or albumin less than 3.5 g/dl.ConclusionsMortality in patients who remain on hemodialysis is very high and is associated with non-modifiable factors such as age but also others that we can prevent or treat such as type of vascular access or nutrition status at the beginning of treatment.     

Utilidad del MAPA y bioimpedancia para el tratamiento y control de la HTA en pacientes en hemodiálisis crónica

IntroductionHypertension is very common in haemodialysis (HD) patients, and is associated with increased morbidity and mortality rates.The goals of our research were to: 1. Measure blood pressure (BP) during HD sessions; 2. Study BP in between HD sessions with 44-hour Ambulatory Blood Pressure Monitoring (ABPM); 3. Identify differences between the BP recorded during HD and with the ABPM; 4. Evaluate changes in treatment after the ABPM; 5. Perform bioimpedance spectroscopy (BIS) on all patients and, in those hyper-hydrated or hypertensive according to ABPM, assess for changes in BP after adjusting the dry weight; 6. Identify factors associated with average systolic and diastolic BP measured by ABPM.Material and methodsProspective observational study, which included 100 patients from our dialysis unit. We measured BP before and after the HD sessions for two weeks and then, mid-week, we attached the ABPM device to the patients for 44 hours. Before starting the following dialysis session, we performed BIS. A second ABPM was performed on hyper-hydrated patients and patients hypertensive according to ABPM to evaluate changes in BP values.ResultsAccording to the ABPM, 65% of patients had daytime BP > 135/85 mmHg, 90% night-time BP > 120/70 mmHg and 76% average BP > 130/80 mmHg; 11% had a dipper pattern, 51% non-dipper and 38% riser. The average systolic and diastolic BP readings were 4.7 mmHg (3.8%) and 1.1 mmHg (1.64%) higher on the second day. The dose of antihypertensive medication had to be lowered in 6% of patients, 9% had to stop taking it, 28% needed increased doses and 17% had to add a new drug. The pre-HD diastolic BP best matched the ABPM. After performing the bioimpedance and adjusting dry weight, there was a statistically significant decrease in all BP values. The univariate analysis showed that the average systolic BP was higher in patients with a high-calcium dialysis bath, more antihypertensive drugs and higher doses of EPO. The multivariate analysis showed significant association for EPO and number of drugs (p < 0.01). The average diastolic BP was higher in younger patients and patients with lower Charlson index, lower body mass index and less diuresis, those on higher doses of EPO and non-diabetics. The linear regression study showed age (p < 0.005), body mass index (p < 0.03) and EPO (p < 0.03) as significant variables.ConclusionsOur study shows: 1. The variability of hypertension criteria according to use of BP values from during the HD session or ABPM; 2. The variability of BP in the interdialysis period; 3. That the pre-dialysis diastolic BP best corresponds with the ABPM. 4. That the use of both BIS and ABPM improves the control of BP; 5. That the dose of EPO is the most important factor associated with hypertension in our patients.     

Prevalencia de colitis eosinofílica primaria en pacientes con diarrea crónica y síndrome de intestino irritable con predominio de diarrea

IntroductionPrimary eosinophilic colitis (PEC) is an inflammatory disease caused by the infiltration of eosinophils into the mucosa of the colon, determined after having ruled out other possible causes. It is characterized by abdominal pain and diarrhea and its prevalence is unknown.AimsTo know the prevalence of PEC in patients with chronic diarrhea and in those with clinical criteria for diarrhea-predominant irritable bowel syndrome (IBS-D).Patients and methodsAll patients with chronic noninflammatory diarrhea that were consecutively seen over a decade were studied through colonoscopy, with systematic biopsy. Patients with a known or decompensated organic disease, alarm features, abnormal minimal laboratory test results, and factors associated with eosinophilia were excluded. Patients with the clinical criteria for IBS-D (Rome III) were selected from the general group. Eosinophilic colitis was defined as the presence of > 35 eosinophils/100 epithelial cells per field in any of the segments.ResultsFrom the 683 patients seen, a total of 545 patients (361 women) were included in the study. Twenty-two cases of PEC were detected, resulting in a prevalence of 4.0%. A total of 343 patients had IBS-D criteria (223 women), with 16 cases of PEC detected, for a prevalence of 4.7%. Colonoscopy was normal, or almost normal, in all the PEC cases detected.ConclusionsThe prevalence of PEC was 4.0% in the patients with chronic diarrhea and 4.7% in the patients with IBS-D. Peripheral eosinophilia appeared to be the main distinctive clinical characteristic, but systematic biopsy was essential for making the diagnosis.     

Impacto del ejercicio físico en pacientes con enfermedad renal crónica: revisión sistemática y metaanálisis

Physical exercise may offer multiple benefits to patients with chronic kidney disease (CKD). However, it was not traditionally recommended because of the possibility of impairing renal function and increasing proteinuria. The objective of this study is to review the clinical trials on physical exercise in patients with CKD and describe its effect on the progression of kidney disease and other factors associated. Randomized clinical trials (RCT) comparing an intervention that included an exercise component with a control group without physical exercise in non-dialysis patients with CKD from 2007 to 2018 in English and Spanish were included. PubMed, Scopus, Embase, Ovid (Medline) and PEDro databases were used for the search. Effects of physical exercise were summarized by the standardized mean difference (SMD). No differences were found in glomerular filtration rate or proteinuria between the intervention group and the control group: SMD −0.3 (P = .81); SMD 26.6 (P = .82). Positive effects were obtained on peak oxygen consumption: SMD 2.5 (P < .001), functional capacity: SMD 56.6 (P < .001), upper limb strength: SMD 6.8 (P < .001) and hemoglobin: SMD 0.3 (P = .003). An improvement on the quality of life was also evident using the KDQOL-36 survey: SMD 3.56 (P = .02) and the SF-36 survey: SMD 6.66 (P = .02). In conclusion, the practice of low-intensity physical exercise routinely has no negative impact on renal function. On the contrary, it improves aerobic and functional capacity, impacting positively on the quality of life.     

Tejido graso epicárdico,calcificación arterial coronaria y mortalidad en pacientes con enfermedad renal crónica avanzada y hemodiálisis

Introduction and objectivesEpicardial and mediastinal adipose tissue (EAT, MAT) are linked to metabolic syndrome and coronary artery disease. Patients with chronic kidney disease (CKD) have thicker EAT. We assessed if EAT and MAT could be associated with increased mortality and cardiovascular events in patients with advanced CKD and haemodialysis therapy.MethodsA post-hoc study was performed. We analyzed a prospective series of 104 cases. EAT thickness was quantified by a multislice synchronized computed tomography (MSCT).ResultsThe follow-up period was 112.68 (109.94 -115.42) months. The optimal cut-off point of EAT for prediction of total mortality was 11.45 mm (92.86% and 43.75%). EAT thickness was associated with serum albumin levels, serum triglyceride levels, phosphorus and calcium phosphate product. The EAT was greater in haemodialysis patients compared to those with advanced CKD (P<.001). Patients with diabetes mellitus had greater EAT and MAT thickness (P=.018). At the end of follow up, the survival average time of patients with EAT thickness <11.45 mm was 97.48 months vs. 76.65 months for thickness > 11.45 mm (P=.007).ConclusionsA higher EAT and MAT thickness was associated with increased mortality. Furthermore, EAT was associated with lower free survival time to fatal and non-fatal cardiovascular events. The measurement of EAT and MAT by MSCT could be a prognostic tool to predict cardiovascular events and mortality risk in advanced CKD patients.     

Factores asociados a la calidad de vida y su predicción en pacientes renales en hemodiálisis

Background and objectiveThe present study aims to analyze the levels of health-related quality of life (HRQL) in patients with end-stage kidney disease (ESKD) in haemodialysis, and to explore what demographic, medical and psychological variables are associated with HRQL and contribute to its prediction.Matrials and methodsCross-sectional study with 302 patients with advanced chronic kidney disease (ACKD) on haemodialysis. They were assessed: (1) HRQoL (Shorter Form Health Survey Questionnaire); (2) Anxiety and depression (Goldberg Anxiety and Depression Scale); (3) Sociodemographic data and (4) Medical data. Correlational analyses, means comparison and path analyses with latent variables (PALV) were conducted.ResultsThe PALV showed that 42% of the variance in the HRQL could be explained by the variables evaluated (χ²/df = 2.10; GFI = .938; IFI = .920; CFI = .918; RMSEA = .062; SRMR = .056). Depression was the strongest predictor of HRQL (?.71; p = .002), followed by physical activity (?.19; p = .044). Age (?.122; p = .034) and comorbidity (?.206; p = .001) were weakly associated with physical HRQL. The practice of regular physical activity is related to the physical HRQoL (r = .21; p = .00) and mental (r = .12; p = .028).ConclusionsA high percentage of the variance in HRQoL is explained by the levels of depression and physical activity. Interventions to promote HRQoL in patients with ESKD should focus in promoting physical activity and taking care of patient's mental health.     

Fibrilación auricular no valvular en pacientes en hemodiálisis crónica. ¿Debemos anticoagular?

Chronic kidney disease (CKD) is an independent risk factor for presenting atrial fibrillation (AF), which conditions an increased risk already present in CKD of suffering a thromboembolic event. And this risk is even higher in the hemodialysis (HD) population. On the other hand, in CKD patients and even more so in HD patients, the probability of suffering serious bleeding is also higher. Therefore, there is no consensus on whether or not to anticoagulate this population.Taking as a model what is advised for the general population, the most common attitude among nephrologists has been to opt for anticoagulation, even though there are no randomized studies to support it.Classically, anticoagulation has been done with vitamin K antagonists, at high cost for our patients: severe bleeding events, vascular calcification, and progression of nephropathy, among other complications.With the emergence of direct-acting anticoagulants, a hopeful outlook was opened in the field of anticoagulation, as they were postulated as more effective and safer drugs than antivitamin K. However, in clinical practice, this has not been the case.In this paper we review various aspects of AF and its anticoagulant treatment in the HD population.     

Validación del índice de gravedad del síndrome de Cushing en pacientes con síndrome de Cushing iatrógénico

IntroductionCurrently there are no clinimetric instruments for the measurement of the severity of iatrogenic Cushing's syndrome (ICS). Sonino et al. created a clinical severity index of endogenous Cushing's disease (CSI) but it has not been applied to patients with ICS.ObjectiveTo validate and determine the utility of the CSI and its correlation with clinical variables in rheumatological patients with continuous use of glucocorticoids (GC).Subjects and methodsPatients with a history of continuous systemic GC use (for at least 4 weeks) indicated for treatment of rheumatological disease were included. All the patients filled out a questionnaire on sociodemographic data, characteristics of the CG used; the way of use and the presence or absence of adverse events. The CSI was applied by 2 observers independently. Consistency, interobserver concordance and principal component analysis were calculated.ResultsA total of 32 patients with an average age of 35.72 ± 12.8 years were studied; 29 were women (90.6%). The average CSI score by the first observer was 3.50 ± 2.02, and by the second observer was 2.31 ± 1.75 (p = .004). The interobserver concordance was low in the items with imprecise definitions; for which modifications were made in the definitions to improve their performance. The CSI scores correlated with the presence of adverse effects and the type of dose used.ConclusionsThe CSI has an adequate correlation with clinical manifestations in patients with chronic use of GC. The clinimetric characteristics of the questionnaire improved by standardising the definitions of subjective clinical variables.     

Inflexibilidad psicológica e impacto clínico: adaptación del Cuestionario de Aceptación y Acción-II en una muestra de pacientes en tratamiento de hemodiálisis

Background and objectivesFew studies have investigated the role psychological inflexibility (PI) could have in the context of chronic renal failure. The primary objective of this study was to analyse the psychometric features, the reliability and the validity of the Spanish version of the Acceptance and Action Questionnaire-II (AAQ-II) adapted to the context of patients undergoing haemodialysis (HD). The secondary objective was to assess the relationship between PI and parameters related to the adherence to treatment and quality of life in these types of patients.Materials and methodsProspective cross-sectional study with patients on haemodialysis (n = 186).ResultsThe fat tissue index (15.56 ± 5.72 vs. 18.99 ± 8.91, P = .033), phosphorus levels (3.92 ± 1.24 vs. 4.66 ± 1.38; P = .001) and interdialytic weight gain (1.56 ± 0.69 vs. 1.89 ± 0.93, P = .016) were higher in patients with a higher PI score. Phosphorus levels (P = .013) significantly explained the variability of PI levels. PI was also shown as a significant predictor (P = .026) of the variability of phosphorus levels.ConclusionsThe adaptation of the AAQ-II questionnaire to the HD context led to a valid and reliable measurement of PI in these types of patients and our results also seem to support the relationship between PI and health and quality of life parameters in patients with chronic conditions.     

Mortalidad precoz en pacientes con enfermedad renal crónica que inician hemodiálisis por urgencia en una población peruana: Incidencia y factores de riesgo

Objectives

To estimate early mortality in patients with chronic kidney disease who started emergency haemodialysis between 2012 and 2014 in a national referral hospital in Lima, Peru, and to identify risk factors.

Prevalencia de metanógenos y factores asociados en pacientes con síndrome de intestino irritable y controles sanos en una población del sureste de México

IntroductionMethane (CH₄) is an inert gas produced by colonic anaerobes and has been associated with different intestinal diseases, including irritable bowel syndrome (IBS). According to geographic region, the prevalence of methanogens varies, being higher in Africa (80%) and lower in the United States (35-40%). In Mexico, the prevalence of methanogens is unknown.AimTo evaluate the prevalence of CH₄ producers and associated factors in a group of patients with IBS and controls in a Mexican population.Materials and methodsA baseline fasting measurement of alveolar H₂ and CH₄ gas was carried out, by gas chromatography (stationary phase), in consecutive patients diagnosed with IBS and a control group. Subjects with baseline levels of H₂ of 0 ppm and CH₄ ≥ 5 ppm were classified as methanogenic.ResultsA total of 132 controls (53.8% women) and 67 patients with IBS (76% women) were included. The overall prevalence (n = 199) of methanogenic subjects was 38% (n = 76) (95% CI: 0.31-0.45) and they had a greater prevalence of overweight/obesity (56.5 vs 39.8%, P = .028). The prevalence of methanogens in the healthy controls was 41.6% (95% CI: 0.33-0.49), whereas, in the patients with IBS, it was 31.4% (n = 21, 71% IBS-C and 29% IBS-M).ConclusionsThe prevalence of methanogens in our study on a Mexican population was comparable to that reported in other populations and was associated with overweight/obesity. One-third of the patients with IBS presented with methanogens. Said microorganisms were particularly associated with the constipation-predominant IBS subtype.