Automated Peritoneal Dialysis Research Articles

MO705SLEEP DISTRUBANCES IN PATIENTS ON PERITONEAL DIALYSIS

Abstract Background and Aims Sleep disturbances are more common in patients with chronic renal failure and on dialysis than in the general population. They affect their mental health and quality of life. The objective of this study was to evaluate the sleep disorders of patients on peritoneal dialysis (PD). Method We report the results of a descriptive cross-sectional study in 27 patients on PD in order to assess the quality of sleep in these patients and its relation with mental health and quality of life. Sleep quality was performed using the Pittsburgh Sleep Quality Index (PSQI) to assess origin and extent of sleep disorders. Anxiety-depressive disorders were assessed using the HAD (Hospital anxiety and depression) scale. The quality of life (QOL) measurement was performed by the SF36 and KDQoL. Results We included 15 men and 12 women with an average age of 45.74 years (21–77). Eleven patients were on automated peritoneal dialysis (APD) and 16 patients on continuous ambulatory peritoneal dialysis (CAPD). The mean duration of dialysis was 45.77 ± 25 months. Poor quality of sleep was reported in 14 patients. The mean PSQI was 7.22 ± 4.87. The most affected components were sleep duration and usual sleep efficiency. Depression was objectified in 22.22% of patients and 26% of patients had anxiety. Impaired quality of sleep was associated with decreased quality of life. The components of the physical dimension of quality of life: limitation due to physical condition, physical pain were significantly lower in dialysis patients with good quality of sleep (p=0.014, p= 0.033 respectively) The mental dimension component of QOL of SF36: relationship to others, limitation due to mental condition was also lower in patients with sleep disturbances (p=0.039, p= 0.036 respectively). Symptoms and problems, as well as the effects and the burden of kidney disease were not associated with poor quality of sleep. Impaired sleep quality was also not significantly associated with depression or anxiety in our series. Conclusion Sleep disturbances are common in PD patients and are associated with decreased quality of life. Therefore, they must be taken into account in the therapeutic measures recommended in order to improve the quality of life of these patients and reduce morbidity and mortality.

MO687FREE WATER TRANSPORT AND ABSOLUTE DIP OF DIALYSATE SODIUM CONCENTRATION: EARLY CLINICAL PARAMETERS FOR PERITONEAL FIBROSIS IN PD PATIENTS?

Abstract Background and Aims Reduction of peritoneal salt and water removal is an important cause of shortened patient and technique survival in peritoneal dialysis (PD). The aim of this study was to longitudinally analyze changes in fluid and solute transport parameters in PD patients during the first year of treatment, using peritoneal equilibration test (PET). Method Retrospective observational study of incident PD patients who underwent 4-hour 3.86% glucose PET with additional measurement of ultrafiltration at 1 hour, 1 month after PD initiation and 12 months later. Parameters of peritoneal transport such as dialysate-to-plasma ratio of creatinine (D/Pcreat), ultrafiltration at 1 and 4 hours, small-pore ultrafiltration (SPUF), free water transport (FWT), sodium removal and absolute dip of dialysate sodium concentration (ΔDNa) at 1 hour (as an expression of sodium sieving), were calculated. Serum cancer antigen 125 (CA-125) was also assessed. Clinical, analytical and demographic data were analyzed. Statistical analysis was performed using SPSS (Version 23 for Mac OSX). Results The average age of 16 incident PD patients was 58.69 ± 8.51 years, 10 (62.5%) were male and 5 (31.8%) were diabetic. Ten patients (62.5%) were on automated peritoneal dialysis (APD). One month after PD initiation, membrane characteristics were: D/P = 0.684 ± 0.589, total UF at 4h = 0.696 ± 0.283L, UF at 1h = 0.487 ± 0.162L, SPUF = 0.303 ± 0.359L, FWT = 0.207 ± 0.738L, %FWT = 51.855 ± 11.828%, sodium removal = 38.048 ± 16.087mmol/L and ΔDNa = 11.125 ± 3.34mmol/L. Average serum CA-125 was 51.206 ± 22.6U/mL. A paired sample t-test was performed to compare these parameters 1 and 12 months after PD initiation and revealed a statistically significant increase of 0.11± 0.196L (p=0.042) on SPUF and 18.607 ± 7.1mmol/L (p=0.019) on sodium removal. ΔDNa showed a decrease of 2.5 ± 0.743mmol/L (p=0.005) and % FWT of 11.782 ± 12.831% (p=0.002). FWT also showed a decrease of 0.168 ± 0.019L, total UF at 4h of 0.206 ± 0.142L and UF at 1h of 0.114 ± 0.243L, however did not reach statistical significance. D/Pcreat remained stable. CA-125 showed a mild decrease of 3.644 ± 22.364U/mL although not statistically significant. Pearson correlation revealed a positive correlation between the variation of total UF at 4h and the variation of FWT (r=0.553, p=0.026) and ΔDNa (r=0.503, p=0.047), but not with SPUF, sodium removal, D/Pcreat or CA-125, during the study follow-up period. Conclusion The reduction of FWT through aquaporins and, particularly, the reduction of ΔDNa as a sodium sieving measure, appear to be the first functional changes in peritoneal membrane, suggesting that fibrosis may begin soon after PD initiation. Our results indicate that FWT and ΔDNa can be used to access fibrotic peritoneal alterations earlier than other conventional parameters such as D/Pcreat.

MO719PERITONEAL DIALYSIS IN ELDERLY PATIENTS

Abstract Background and Aims Peritoneal Dialysis (PD) is now often being initiated in older patients. The benefits of this modality of dialysis have been well demonstrated in the literature. The aim of our study was to analyse the epidemiological and clinical profile of the elderly patients and to determine predictive factors of mortality Method It was a retrospective study including 51 case defined as patients ≥65-year-old, treated by PD in the Internal Medicine Department of the Charles Nicolle hospital during the period between 1986 and 2020. Results Fifty one patients were enrolled in the study. Their mean age was 71,6 ± 5,4 years [65 - 86]. There were 32 men (62, 7%) and 19 women (37,2%) . The method of initiation was the PD in 53, 84%. Diabetic and vascular nephropathy was the first cause of End-Stage Renal Disease in 56% and 19,6%. The mean Charlson score was 5,5 ± 1,4 [3-9]. The mean age when using PD was 70.8 ± 6 years [54-86]. Autonomous and active patients were detected in 29.4%. Diabetes mellitus, hypertension and coronary artery disease was observed in 58,8%, 29,4% and 15.7% of patients. In our study, 82.35% started on automated PD (APD) and 17,6% on continuous ambulatory PD (CAPD). The rate of mortality was 53%. Switching modality from PD to hemodialysis occurred in 29,4% of cases. A univariate logistic regression identified a coronary artery disease as significantly associated with increased mortality (HR=2,1 [1-2,1, IC 95%](p=0.035)). Conclusion Elderly patients on dialysis face many issues but can have continued success with PD when they have adequate care and support. The control of the morbidities such as coronary artery disease is important to decrease the rate of mortality in patients using this modality of dialysis.

Pharmacokinetics of Intraperitoneal Vancomycin and Amikacin in Automated Peritoneal Dialysis Patients With Peritonitis.

Objective: The study aimed to evaluate the vancomycin and amikacin concentrations in serum and dialysate for automatic peritoneal dialysis (APD) patients. Methods: A total of 558 serum and dialysate samples of 12 episodes of gram-positive and 18 episodes of gram-negative peritonitis were included to investigate the relationship between vancomycin and amikacin concentrations in serum and dialysate on the first and third days of treatment. Samples were analysed 30, 120 min, and 48 h after intraperitoneal administration of vancomycin in peritonitis caused by gram-positive agents and 30, 120 min, and 24 h after intraperitoneal administration of amikacin in peritonitis caused by gram-negative agents. Vancomycin was administered every 72 h and amikacin once a day. The target therapeutic concentration of amikacin was 25–35 mg/l at the peak moment and 4–8 mg/l at the trough moment; and after 48 h for vancomycin, 15–20 mg/l at the trough moment. Results: For peritonitis caused by gram-negative agents, at the peak moment, therapeutic levels of amikacin were reached in dialysate in 80.7% of patients with evolution to cure and in 50% of patients evaluated as non-cure (p = 0.05). At the trough moment, only 38% were in therapeutic concentrations in the dialysate in the cure group and 42.8% in the non-cure group (p = 1). Peak plasma concentrations were subtherapeutic in 98.4% of the samples in the cure group and in 100% of the non-cure group. At the trough moment, therapeutic concentrations were present in 74.4% of the cure group and 71.4% of the non-cure group (p = 1). Regarding vancomycin and among gram-positive agents, therapeutic levels were reached at the peak moment in 94% of the cure group and 6% of the non-cure group (p = 0.007). After 48 h, 56.8% of the cure group had a therapeutic serum concentration whereas for the non-cure group it was only 33.3% (p = 0.39). Conclusion: Despite a small sample size, we demonstrated peak dialysate amikacin level and peak serum vancomycin level correlates well with Gram-negative and Gram positve peritonitis cure, respectively. It is suggested to study the antibiotics pharmacodynamics for a better understanding of therapeutic success in a larger sample.

Avoid sharp objects when unpacking peritoneal dialysis equipment – A rare case of severe pneumoperitoneum in automated peritoneal dialysis (APD)

Avoid sharp objects when unpacking peritoneal dialysis equipment – A rare case of severe pneumoperitoneum in automated peritoneal dialysis (APD)

Home Versus Facility Dialysis and Mortality in Australia and New Zealand

Mortality is an important outcome for all dialysis stakeholders. We examined associations between dialysis modality and mortality in the modern era. Observational study comparing dialysis inception cohorts 1998-2002, 2003-2007, 2008-2012, and 2013-2017. Australia and New Zealand (ANZ) dialysis population. The primary exposure was dialysis modality: facility hemodialysis (HD), continuous ambulatory peritoneal dialysis (CAPD), automated PD (APD), or home HD. The main outcome was death. Cause-specific proportional hazards models with shared frailty and subdistribution proportional hazards (Fine and Gray) models, adjusting for available confounding covariates. In 52,097 patients, the overall death rate improved from ~15 deaths per 100 patient-years in 1998-2002 to ~11 in 2013-2017, with the largest cause-specific contribution from decreased infectious death. Relative to facility HD, mortality with CAPD and APD has improved over the years, with adjusted hazard ratios in 2013-2017 of 0.88 (95% CI, 0.78-0.99) and 0.91 (95% CI, 0.82-1.00), respectively. Increasingly, patients with lower clinical risk have been adopting APD, and to a lesser extent CAPD. Relative to facility HD, mortality with home HD was lower throughout the entire period of observation, despite increasing adoption by older patients and those with more comorbidities. All effects were generally insensitive to the modeling approach (initial vs time-varying modality, cause-specific versus subdistribution regression), different follow-up time intervals (5 year vs 7 year vs 10 year). There was no effect modification by diabetes, comorbidity, or sex. Potential for residual confounding, limited generalizability. The survival of patients on PD in 2013-2017 appears greater than the survival for patients on facility HD in ANZ. Additional research is needed to assess whether changing clinical risk profiles over time, varied dialysis prescription, and morbidity from dialysis access contribute to these findings.

Usability testing to evaluate user experience on cyclers for automated peritoneal dialysis

BackgroundIn the development of medical devices usability is an important aspect standing alongside performance and safety. Peritoneal dialysis (PD) can be provided by use of automated PD (APD), assisted by a cycler performing the solution exchanges. The present study has been executed to simulate training on APD cyclers to evaluate learnability and usability through established questionnaires.MethodsUsability of two APD cyclers (sleep•safe harmony, Fresenius Medical Care, Bad Homburg, Germany and HomeChoice Pro, Baxter International Inc., Deerfield (IL), USA) were evaluated with the User Experience Questionnaire (UEQ), the NASA TLX Questionnaire, and the System Usability Scale (SUS), both after training and after experience sessions.ResultsLay persons (n = 10) and health care personnel (HCPs, n = 11) participated in the study. The respondents consistently gave positive ratings in the UEQ after training and experience session. The ratings from the NASA TLX Questionnaire were mostly below 50 points indicating a low workload. Lay users and HCPs gave high ratings in the SUS evaluation both after the training and experience sessions confirming a good learnability and usability of the devices.ConclusionsThe usability study to assess learnability and use-related safety revealed consistent results with all applied instruments, which demonstrated good learnability and ease-of-use of the studied APD cyclers.

Optimization of bimodal automated peritoneal dialysis prescription using the three-pore model.

Previous studies suggested that automated peritoneal dialysis (APD) could be improved in terms of shorter treatment times and lower glucose absorption using bimodal treatment regimens, having 'ultrafiltration (UF) cycles' using a high glucose concentration and 'clearance cycles' using low or no glucose. The purpose of this study is to explore such regimes further using mathematical optimization techniques based on the three-pore model. A linear model with constraints is applied to find the shortest possible treatment time given a set of clinical treatment goals. For bimodal regimes, an exact analytical solution often exists which is herein used to construct optimal regimes giving the same Kt/V urea and/or weekly creatinine clearance and UF as a 6 × 2 L 1.36% glucose regime and an 'adapted' (2 × 1.5 L 1.36% + 3 × 3 L 1.36%) regime. Compared to the non-optimized (standard and adapted regimes), the optimized regimens demonstrated marked reductions (>40%) in glucose absorption while having an identical weekly creatinine clearance (35 L) and UF (0.5 L). Larger fill volumes of 1200 mL/m2 (UF cycles) and 1400 mL/m2 (clearance cycles) can be used to shorten the total treatment time. These theoretical results imply substantial improvements in glucose absorption using optimized APD regimens while achieving similar water and solute removal as non-optimized APD regimens. While the current results are based on a well-established theoretical model for peritoneal dialysis, experimental and clinical studies need to be performed to validate the current findings.

Feedback on the benefits of remote patient control in Automated Peritoneal Dialysis in a French peritoneal dialysis center.

The COVID-19 pandemic has highlighted the growing role of telemedicine in home dialysis treatments. Since the appearance of a connected automated peritoneal dialysis (APD) machine (Claria Sharesource Baxter® machine), we have systematically offered this solution to our patients treated with APD. Over the past two years, we have treated 35 patients with connected APD, of which 20 are still under the technique (aged 50 to 87) and represent 54% of the patients on peritoneal dialysis. A questionnaire on five subjects (perception of switching to the connected machine, stress, safety, everyday life, and vacations) was also given to them and showed that 80% of the patients had no stress related to the telemonitoring, while 18 out of 20 patients (90%) felt safe. In 2020, we received 74 phone calls during on-call phone duty, including 42 calls for the 20 patients on connected APD, one all for a patient on normal APD, and 32 calls for 16 patients on continuous ambulatory peritoneal dialysis (CAPD). Handling errors concerned 42.85% of the calls, system errors concerned 4.76%, program validation concerned 7.14%, and connection problems concerned 9.52%. We were thus able to correct several problems remotely, such as drainage problems, weight gain, blood pressure imbalance, poor compliance, and connection problems. Thanks to the platform, we are notified daily of a possible problem. This saves the nurses time and allows them to deal with other issues. The way we educate patients and assist private nurses has not changed. Indeed, only the connection to the network as well as the entry of the weight and arterial pressure were added, and the disposables remained the same.
 Night or day, or in times of a health crisis, we can provide a rapid and targeted response to the patients’ questions, thanks to the platform.

POS-640 FUNGAL PERITONITIS IN AUTOMATED PERITONEAL DIALYSIS : AN 18-YEAR SINGLE CENTRE EVALUATION

Infectious peritonitis is the most serious complication of peritoneal dialysis (PD). Its origin is often bacterial. Fungal peritonitis (FP) is rare but always devastating, accounting for high rates of technique failure, morbidity and mortality. It is therefore important to know its microbiological and clinical profile and its evolution in order to establish preventive and therapeutic strategies. The aim of our study is to determine the FP frequency and to describe its clinical, microbiological and therapeutic aspects in patients treated with automated peritoneal dialysis (APD), APD being the most frequent PD modality in our centre. This was a single-centre retrospective study carried out in the PD unit of Charles Nicolle Hospital in Tunis from January 01, 2000 to December 31, 2018, on patients treated with APD and having presented at least one fungal peritonitis. Clinical, biochemical characteristics and detailed data on peritonitis episodes were recorded. Six cases of FP were identified, ie 3% of all infectious peritonitis that occurred during the study period. The patients' sex ratio was 2. Their mean Charlson score at onset of APD was 3 [Extremes: 2-6]. Only one patient was diabetic. Their mean age at the time of peritonitis was 40 +/- 16 years. Candida albicans was the most frequently (50%) detected yeast followed by candida non albicans (2 patients). Aspergillus has been isolated in one patient. This group experienced an average of 2 bacterial peritonitis before FP. All FP were preceded by bacterial peritonitis: In five patients, they were diagnosed following refractory peritonitis mainly due to Enterobacteria (4 patients). In one case, the patient had a history of three episodes of bacterial peritonitis, FP presented as a new episode of infectious peritonitis occurring 5 months after the third peritonitis. All Candida peritonitis were treated with intravenous fluconazole for an average of 13 days. Aspergillary peritonitis was treated with amphotericin B for 15 days. The PD catheter was removed in all cases. Four patients were transferred to hemodialysis. APD was retried in the other two patients. They were switched to hemodialysis after 1 and 7 months, respectively, of placement of the second PD catheter for loss of ultrafiltration and catheter dysfunction. FP are certainly rare, but they are an ineluctable cause of PD failure.

POS-648 PRURITUS AND QUALITY OF LIFE IN PERITONEAL DIALYSIS PATIENTS

Pruritus is a common complication among end-stage renal disease patients. It affects approximatevely 40-90% of these patients. Although it highly affects their life quality, it remains underdiagnosed and very poorly cared for. The objective of this work is to describe the frequency of this entity, its risk factors, and its relationship with the quality of life of patients on peritoneal dialysis. This is a cross-sectional survey of 27 end-stage renal disease patients treated with peritoneal dialysis (PD). The pruritus was assessed by the following tests: the global VAS-UP scale and the DLQI (Dermatolgy life quality index). The quality of life was measured by adapted and validated questionnaires (KDQoL-SF36) and according to the Karnovsky index. The descriptive study included 15males and 12 females. the mean age was 45.74 years (21–77 years). Eleven patients were on automated peritoneal dialysis (APD) and 16 patients on continuous ambulatory peritoneal dialysis (CAPD). The mean duration of dialysis was 45.77 ± 25 months. Four patients had retained urine output (> 1000 mL per 24 h). Moderate to extreme pruritus was reported in 29.6% of patients. Average SF-36 scores ranged from 38.8 (limitations due to physical condition) to 61.1 points (life and relationships with others). The mean KDQoL scores ranged from 41.2 (burden of kidney disease) to 65.1 points (symptoms / problems). Karnovsky's average index was 76.3%. The intensity of the pruritus was significantly associated with a decrease in the Karnovsky index (p = 0.03). This study underscores the fairly high prevalence of pruritus in peritoneal dialysis patients.

POS-643 PERITONEAL DIALYSIS RELATED PERITONITIS: A SINGLE CENTRE EXPERIENCE IN BORNEO, MALAYSIA

Peritoneal dialysis (PD) - related peritonitis is a common complication and a major cause of conversion to haemodialysis (HD). We aimed to determine the demographic characteristics of our patients, and to evaluate the microbiology and clinical outcomes among PD patients with peritonitis A retrospective observational cohort study enrolling all patients who had been treated with continuous ambulatory PD (CAPD) or automated PD (APD) for at least 90 days and developed peritonitis at Hospital Queen Elizabeth, Sabah, Malaysia from January 2014 until June 2020. Relevant demographic, biochemical and clinical data were collected. A total of 369 episodes of peritonitis were recorded in 194 patients. The median age of patients were 46.41± 16.2 years (range from 8 to 84 years); 85 (43.8%) were male. 71 (36.6%) had diabetes as the primary disease. The overall peritonitis rate was 0.384 episodes per patient-year. Gram-positive organism was the predominant organism from the cultures, 156 episodes (42.28%), followed by Gram-negative organism (88 episodes, 23.85%), fungal (19 episodes, 5.15%), mycobacterium (4 episodes, 1.08%), polymicrobial (5 episodes, 1.36%), and culture negative (97 episodes, 26.29%). Coagulase negative Staphylococcus (CONS) was the most common organism among the gram-positive peritonitis while Escherichia coli was the most common organism in gram-negative peritonitis. The PD catheter were removed in 109 episodes (29.54%). Mycobacterium and fungal had higher risk of catheter loss (100% and 89.5% respectively). The catheter loss rate was significantly higher in gram-negative peritonitis, as compared to gram-positive (38.6% VS 15.4%, p<0.001). Seven patients died due to PD peritonitis (2 from gram-positive, 3 gram-negative, 1 culture negative and 1 polymicrobial). The high rates of culture negative PD peritonitis needs further evaluation and improvement on identification of the organisms. Retraining, exit site care, improved microbiology sensitivity, appropriate antimicrobial treatment and response and early removal of the catheter are warranted to further improve the PD-related peritonitis technique failure and mortality.

POS-656 CORRELATION OF BIO-IMPEDANCE ANALYSIS REPORTS WITH IN-HOME BLOOD PRESSURE MEASUREMENTS IN AUTOMATED PERITONEAL DIALYSIS PATIENTS

A key objective of peritoneal dialysis (PD) is to achieve euvolemia. Patients undergoing automated PD (APD) are frequently fluid overloaded, while anuric APD patients with low fluid removal can have uncontrolled hypertension, left ventricular hypertrophy and worse survival. In this report, we aim to explore the correlation of fluid status in APD patients with in-home blood pressure (HBP) measurements and number of antihypertensives used.

Pharmacokinetics of culture-directed antibiotics for the treatment of peritonitis in automated peritoneal dialysis: A systematic narrative review.

The objectives of this study were to provide a summary of the pharmacokinetic data of some intraperitoneal (IP) antibiotics that could be used for both empirical and culture-directed therapy, as per the ISPD recommendations, and examine factors to consider when using IP antibiotics for the management of automated peritoneal dialysis (APD)-associated peritonitis. A literature search of PubMed, EMBASE, Scopus, MEDLINE and Google Scholar for articles published between 1998 and 2020 was conducted. To be eligible, articles had to describe the use of antibiotics via the IP route in adult patients ≥18 years old on APD in the context of pharmacokinetic studies or case reports/series. Articles describing the use of IP antibiotics that had been recently reviewed (cefazolin, vancomycin, gentamicin and ceftazidime) or administered for non-APD-associated peritonitis were excluded. A total of 1119 articles were identified, of which 983 abstracts were screened. Seventy-three full-text articles were assessed for eligibility. Eight records were included in the final study. Three reports had pharmacokinetic data in patients on APD without peritonitis. Each of cefepime 15 mg/kg IP, meropenem 0.5 g IP and fosfomycin 4 g IP given in single doses achieved drug plasma concentrations above the minimum inhibitory concentration for treating the susceptible organisms. The remaining five records were case series or reports in patients on APD with peritonitis. While pharmacokinetic data support intermittent cefepime 15 mg/kg IP daily, only meropenem 0.5 g IP and fosfomycin 4 g IP are likely to be effective if given in APD exchanges with dwell times of 15 h. Higher doses may be required in APD with shorter dwell times. Information on therapeutic efficacy was derived from case reports/series in individual patients and without therapeutic drug monitoring. Until more pharmacokinetic data are available on these antibiotics, it would be prudent to shift patients who develop peritonitis on APD to continuous ambulatory peritoneal dialysis, where pharmacokinetic information is more readily available.

Technique failure in remote patient monitoring program in patients undergoing automated peritoneal dialysis: A retrospective cohort study.

Remote patient monitoring (RPM) programs in automated peritoneal dialysis (APD) allow clinical teams to be aware of many aspects and events of the therapy that occur in the home. The present study evaluated the association between RPM use and APD technique failure. A retrospective, multicentre, observational cohort study of 558 prevalent adult APD patients included between 1 October 2016 and 30 June 2017 with follow-up until 30 June 2018 at Renal Therapy Services network in Colombia. Patients were divided into two cohorts based on the RPM use: APD-RPM (n = 148) and APD-without RPM (n = 410). Sociodemographic and clinical characteristics of all patients were summarized descriptively. A propensity score was used to create a pseudo-population in which the baseline covariates were well balanced. The association of RPM with technique failure was estimated adjusting for the competing events death and kidney transplant. Five hundred fifty-eight patients were analyzed. 26.5% had APD-RPM. In the matched sample comprising 148 APD-RPM and 148 APD-without RPM patients, we observed a lower technique failure rate of 0.08 [0.05-0.15] episodes per patient-year in APD-RPM versus 0.18 [0.12-0.26] in APD-without RPM cohort; incidence rate ratio = 0.45 95% confidence interval: [0.22-0.91], p-value = 0.03. The use of an RPM program in APD patients may be associated with a lower technique failure rate. More extensive and interventional studies are needed to confirm its potential benefits and to measure other patient-centered outcomes.

Neumoperitoneo en un paciente en tratamiento con diálisis peritoneal automática: informe de un caso

Descripción del caso: caso de neumoperitoneo en un paciente con tratamiento en diálisis peritoneal automática con día seco. Pese a que el neumoperitoneo no es una complicación grave, puede alterar la calidad de vida del paciente, por lo que es necesario investigar su origen. Tras revisar la bibliografía existente, encontramos un único caso de neumoperitoneo en terapia de diálisis peritoneal automática y se han reportado un mayor número de casos de esta complicación en pacientes con diálisis peritoneal continua ambulatoria, todos ellos debido a errores en la técnica. Tras la valoración de enfermería, el paciente identificó algunos errores en la técnica como los posibles causantes de esta complicación. Descripción del plan de cuidados: El plan de cuidados consistió en descartar otras complicaciones de la diálisis peritoneal como obstrucción de catéter o peritonitis, evaluar los posibles errores del paciente en la técnica procediendo a su reentrenamiento y ofrecer apoyo emocional al paciente y la familia. La evaluación del plan de cuidados a la semana y al mes fue favorable. Conclusiones: Como conclusión, hay que destacar la importancia de realizar un entrenamiento personalizado en cada paciente, dependiendo del tipo de terapia prescrita y las potenciales complicaciones para que el paciente las conozca y así poder prevenir su aparición.

Informe de un caso de diálisis peritoneal no asistida en personas con déficit visual grave: ¿Es posible?

Informe de un caso de diálisis peritoneal no asistida en personas con déficit visual grave: ¿Es posible? María del Carmen Nacarino-Muriel, Silvia González-Sanchidrián Servicio de Nefrología. Hospital San Pedro de Alcántara. Complejo Hospitalario Universitario de Cáceres. Cáceres. España Como citar este artículo: Nacarino-Muriel MC, González-Sanchidrián S. Informe de un caso de diálisis peritoneal no asistida en personas con déficit visual grave: ¿Es posible? Enferm Nefrol. 2020 Oct-Dic;23(4):396-404 Descripción del caso: Presentamos un informe de un caso sobre entrenamiento en diálisis peritoneal automatizada no asistida en una paciente con una deficiencia visual adquirida grave, cuya pérdida de visión se produjo de forma rápida y progresiva una vez elegida la técnica dialítica. Descripción del plan de cuidados: Se identificaron 5 diagnósticos enfermeros: Conocimientos deficientes: Tratamiento, dieta, higiene en Diálisis Peritoneal; disposición para mejorar el manejo del régimen terapéutico; trastorno de la percepción sensorial visual y auditiva; riesgo de cansancio en el desempeño del rol cuidador; temor y riesgo de infección. Se diseñó un plan de cuidados que incluía un plan de entrenamiento adaptado. Evaluación del plan: se logró un adecuado manejo de la técnica y de los problemas detectados, con un cambio positivo en todos los NOC establecidos en el plan: Conocimiento: Procedimientos terapéuticos; Preparación para el alta: Vida independiente; Conducta de cumplimiento; Orientación cognitiva; Conducta de compensación auditiva y visual; Bienestar del cuidador familiar; Conocimiento: Conductas sanitarias; Control del miedo; Integridad del acceso de DP y Control del riesgo.

Serum \u03b22-microglobulin as a predictor of residual kidney function in peritoneal dialysis patients

BackgroundWhile clinical guidelines recommend that residual kidney function (RKF) is measured in peritoneal dialysis (PD) patients, 24-h urine collection is cumbersome and prone to errors. We wished to determine whether an equation using serum β2-microglobulin (β2M) could prove of clinical benefit in estimating RKF and identifying patients who could start PD with incremental prescriptions.MethodsWe measured serum β2M in consecutive PD outpatients recently starting dialysis with continuous ambulatory PD (CAPD) or automated PD (APD), attending a single tertiary hospital for their routine clinical visit. RKF was defined as the mean of 24-h urine clearances of creatinine and urea. An equation estimating RKF (eRKF) was generated based on serum β2M levels on a randomly selected modelling group.ResultsWe included 511 patients, of whom 351 in the modelling group and 150 in the validation group. Mean age was 58.7 ± 15.8, 307 (60.0%) were men and median RKF value was 4.5 (2.4–6.5) mL/min/1.73 m2. In the validation group, an equation based on β2M, creatinine, urea, age and gender showed minimal bias of − 0.1 mL/min/1.73 m2 to estimate RKF. Area under the receiving operator characteristic curve was 0.915 to detect RKF ≥ 2 mL/min/1.73 m2.ConclusionAn equation based on serum β2M concentration would not be able to replace 24-h urine collection as the standard of care when an exact measurement of RKF is required. However, it could prove useful in identifying patients suitable for an incremental PD prescription and for monitoring RKF in individuals unable to reliably collect urine.Graphic abstract

ISPD guidelines for peritoneal dialysis in acute kidney injury: 2020 update (adults)

(1) Peritoneal dialysis (PD) should be considered a suitable modality for treatment of acute kidney injury (AKI) in all settings (1B). (2.1) Flexible peritoneal catheters should be used where resources and expertise exist (1B) (optimal).(2.2) Rigid catheters and improvised catheters using nasogastric tubes and other cavity drainage catheters may be used in resource-poor environments where they may still be life-saving (1C) (minimum standard).(2.3) We recommend catheters should be tunnelled to reduce peritonitis and peri-catheter leak (practice point).(2.4) We recommend that the method of catheter implantation should be based on patient factors and locally available skills (1C).(2.5) PD catheter implantation by appropriately trained nephrologists in patients without contraindications is safe and functional results equate to those inserted surgically (1B).(2.6) Nephrologists should receive training and be permitted to insert PD catheters to ensure timely dialysis in the emergency setting (practice point). (2.7) We recommend, when available, percutaneous catheter insertion by a nephrologist should include assessment with ultrasonography (2C).(2.8) Insertion of PD catheter should take place under complete aseptic conditions using sterile technique (practice point).(2.9) We recommend the use of prophylactic antibiotics prior to PD catheter implantation (1B).(2.10) A closed delivery system with a Y connection should be used (1A) (optimal). In resource poor areas, spiking of bags and makeshift connections may be necessary and can be considered (minimum standard).(2.11) The use of automated or manual PD exchanges are acceptable and this will be dependent on local availability and practices (practice point). (3.1) In patients who are critically ill, especially those with significant liver dysfunction and marked elevation of lactate levels, bicarbonate containing solutions should be used (1B) (optimal). Where these solutions are not available, the use of lactate containing solutions is an alternative (practice point) (minimum standard).(3.2) Commercially prepared solutions should be used (optimal). However, where resources do not permit this, then locally prepared fluids may be life-saving and with careful observation of sterile preparation procedure, peritonitis rates are not increased (1C) (minimum standard).(3.3) Once potassium levels in the serum fall below 4 mmol/L, potassium should be added to dialysate (using strict sterile technique to prevent infection) or alternatively oral or intravenous potassium should be given to maintain potassium levels at 4 mmol/L or above (1C).(3.4) Potassium levels should be measured daily (optimal). Where these facilities do not exist, we recommend that after 24 h of successful dialysis, one consider adding potassium chloride to achieve a concentration of 4 mmol/L in the dialysate (minimum standard) (practice point). (4.1) Targeting a weekly K t/V urea of 3.5 provides outcomes comparable to that of daily HD in critically ill patients; targeting higher doses does not improve outcomes (1B). This dose may not be necessary for most patients with AKI and targeting a weekly K t/V of 2.2 has been shown to be equivalent to higher doses (1B). Tidal automated PD (APD) using 25 L with 70% tidal volume per 24 h shows equivalent survival to continuous venovenous haemodiafiltration with an effluent dose of 23 mL/kg/h (1C).(4.2) Cycle times should be dictated by the clinical circumstances. Short cycle times (1-2 h) are likely to more rapidly correct uraemia, hyperkalaemia, fluid overload and/or metabolic acidosis; however, they may be increased to 4-6 hourly once the above are controlled to reduce costs and facilitate clearance of larger sized solutes (2C).(4.3) The concentration of dextrose should be increased and cycle time reduced to 2 hourly when fluid overload is evident. Once the patient is euvolemic, the dextrose concentration and cycle time should be adjusted to ensure a neutral fluid balance (1C).(4.4) Where resources permit, creatinine, urea, potassium and bicarbonate levels should be measured daily; 24 h K t/V urea and creatinine clearance measurement is recommended to assess adequacy when clinically indicated (practice point).(4.5) Interruption of dialysis should be considered once the patient is passing >1 L of urine/24 h and there is a spontaneous reduction in creatinine (practice point).

Pleuroperitoneal communication after bacterial peritonitis and total gastrectomy for gastric neuroendocrine tumors: a case report and brief literature review

BackgroundPeritoneal dialysis (PD) is associated with various complications, some of which may result in its discontinuation. Pleuroperitoneal communication (PPC) is commonly recognized by the presence of a diaphragmatic defect and pressure elevation in the abdominal cavity due to the dialysate. PPC is unpredictable and its presence prevents the continuation of PD. We present the clinical course and pathological findings of PPC in a PD patient after bacterial peritonitis and total gastrectomy for gastric neuroendocrine tumors. We provide a brief review of PD-related complications that develop due to a non-infectious pathology, including those related to catheter use and an elevated intra-abdominal pressure.Case presentationA 65-year-old Japanese man, who had been receiving PD treatment for 1 year, visited our hospital owing to a cloudy dialysate. Bacteria were detected in the dialysate. He had been previously diagnosed with gastric neuroendocrine tumors and gastrectomy had been planned. On admission, we started a 14-day antibiotic treatment for PD-related peritonitis. The patient showed a good clinical course. Gastrectomy was performed as planned, and the postoperative course was uneventful. During the perioperative period, PD was temporally changed to hemodialysis. Five weeks after the gastrectomy, PD treatment was resumed with gradual increase in the exchange volume. After returning to PD overnight, using an automated peritoneal dialysis machine, the patient complained of breathing difficulty and he gained weight. Right-sided pleural effusion was observed on a chest radiograph, and PPC was confirmed by scintigraphy when a mixture of technetium-99m and dialysate was seen entering the right hemithorax within 120 min. The patient did not consent to surgery for the PPC and he hoped to continue to receive PD treatment conservatively. We advised the patient to undergo dialysate exchange in a semi-seated position, and he was prohibited from lying down during the daytime. He continued PD treatment without signs of pleural effusion and over-volume.ConclusionsThis case of PPC occurring after bacterial peritonitis and total gastrectomy for gastric neuroendocrine tumors in a PD patient demonstrates the necessity of recognizing the PPC pathology in PD management and establishing methods for preventing PPC development after bacterial peritonitis or surgical procedures.