Clinical Characteristics and Outcomes of Coronavirus Disease 2019 Infection of In-center Hemodialysis Patients: An Experience of a Dialysis Center from Pakistan.

Much has now been learned about the coronavirus disease 2019 (COVID-19) in the general population, but data for hemodialysis (HD) patients are limited. This is the first study of COVID-19 disease in patients undergoing maintenance HD in Pakistan. We studied the epidemiological, clinical, laboratory, radiological characteristics, and outcomes of a cohort of HD patients that contracted COVID-19 in our HD center from the first confirmed case on May 12, 2020, until September 9, 2020. Out of the total 423 patients being dialyzed in our center, 87 were suspected and 50 (11.8%) were confirmed for COVID-19. Male:Female ratio was nearly equal. The median age was 59.5 ± 9.99 years. Most patients developed mild disease. The most common symptoms were fever (82%). Ten (20%) had patchy bilateral opacity (ground-glass opacity) on the chest radiograph. Major complications were lymphocytopenia (36%), thrombocytopenia (30%), pneumonia (28%), and septic shock (6%). Eleven (22%) patients were hospitalized. Five required mechanical ventilation. Ten (20%) patients died. The relative risk of death with COVID-19 in HD patient was 1.46 with 95% confidence interval 1.15-1.84, (P = 0.003). The patients aged ≥60 years had 4.3 times more severe disease (P = 0.044) and died 3.3 times (P = 0.164) more than patients aged <60 years. HD patients have a high susceptibility to COVID-19 compared to the general population with an increased mortality rate and prolonged recovery time. Patients with age >60 years, female gender, diabetics, and those presented with more severe symptoms and laboratory parameters, had a higher fatal outcome.

Outcomes of Different Immunosuppressive Regimen in Adult Biopsy Proven Idiopathic Focal Segmental Glomerulosclerosis: A Retrospective Analysis at a Single Center.

Treatment of focal segmental glomerulosclerosis (FSGS) is frustrating, especially for steroid-resistant FSGS. Different immunosuppressive agents have been used with inconsistent outcome. We analyzed the data in our FSGS patients who, in addition to steroid, were treated with cyclosporine (CYA), cyclophosphamide (CYP), and mycophenolate mofetil (MMF) along with the long-term follow-up. This is a retrospective analysis of 113 patients diagnosed to have FSGS with 11 years' follow-up carried out at The Kidney Center Post Graduate Training institute. Among 113 patients, 51.3% were male with a mean age of 34.4 ± 11.8 standard deviation. Patients who achieved complete remission with steroid alone and steroid with combination of CYA, CYP, and MMF were 38 (26%), 19 (16.8%), and six (5.3%), respectively, similarly those who got partial remission were three (3.6%), five (4.4%), three (2.6%), and eight (7.0%), respectively. The factors which affected the outcome were serum creatinine (SCr), tubulointerstitial fibrosis (TIF), and the treatment. In adjusted analysis, increase in 1 mg of SCr reduces the patient recovery by 56%, while the absence of TIF increases recovery by 80.75%. Taking steroid as reference category, steroid + CYA found 2.03 times more effective as compared with steroid alone. Seven patients developed end-stage renal disease (ESRD) and three died due to disease during the follow-up. CYA comes out as the most effective treatment for steroid-resistant FSGS followed by MMF and CYP. The long-term outcome of all modalities is the same in terms of mortality and developing ESRD. The degree of TIF and renal failure has strong influence on the course of the disease.

"No" to placebo-controlled trials of Covid-19 vaccines.

Recently the WHO Ad Hoc Expert Group proposed that it is ethical to continue placebo-controlled Covid-19 vaccine trials in countries where vaccines are not available even if this vaccine is marketed and being used elsewhere. The reason for this proposal is the usual scientific argument claiming that these trials are the most efficient method to obtain reliable results, and individuals in these countries will continue to get the local standard of care, meaning no vaccination, and thus participants are not being left worse off. We refute this argument on two counts. First the global equity and justice issue, that the scarcity of vaccines in most countries is created by the rich nations that have hoarded vaccines. Second, the science versus research ethics issue, that there are valid scientific methods like non-inferiority trials which can give reliable results, and that applying a standard of care imposed by rich nations is both unethical and possibly exploitative. Thus, we feel that the WHO Ad Hoc Expert Group is wrong in proposing to continue placebo-controlled Covid-19 vaccine trials.

Comparison of Adequacy of Dialysis between Single-use and Reused Hemodialyzers in Patients on Maintenance Hemodialysis.

OBJECTIVE: To compare adequacy of dialysis between single-use and reused dialyzer in order to ascertain whether reuse of dialyzers provides adequate dialysis and thereby enable provision of effective yet affordable renal replacement therapy in resource-limited countries. STUDY DESIGN: Observational cross-sectional study. PLACE AND DURATION OF STUDY: Department of Nephrology, The Kidney Centre, Postgraduate Training Institute (TKC-PGTI), Karachi, from December 2017 to February 2018. METHODOLOGY: Equal number of patients on thrice weekly hemodialysis with either single-use (group A; n=33) or reuse (group B; n=33) dialyzer for at least six months were reviewed. Both groups were compared for dialysis adequacy measured as urea reduction ratio (URR); as well as adequacy of patient care in terms of anemia, bone-mineral control and nutritional status. Serum hemoglobin and erythropoietin stimulating agent (ESA) dose were taken as markers for anemia management, serum calcium, phosphate and intact parathyroid hormone (iPTH) for bone-mineral control and serum albumin as index for nutritional status. RESULTS: The mean age of patients in Group A was 51.36 +13.9 years and in Group B was 54.78 +15.4 years. Female to male ratio was 1.75:1. The mean number of dialyzer reused in group B was 47.5±27.8. There was no significant difference between the study groups in terms of URR (p=0.362), hemoglobin (p=0.347), ESA dose (p-=0.556), serum calcium, phosphorus and iPTH (p=0.868, p=0.138 and p=0.323, respectively), and serum albumin (p=0.777). All the parameters were in accordance with KDOQI guidelines. CONCLUSION: Reuse of dialyzer does not affect dialysis efficiency. Adequate dialysis therapy can be provided economically through reprocessed dialyzers in at least resource-poor countries.

Clinical Characteristics of Patients on Long-term Hemodialysis.

OBJECTIVE: To study the clinical characteristics of patients on hemodialysis for more than ten years in order to highlight the modifiable factors that may improve survival in low socioeconomic status. STUDY DESIGN: Observational cross-sectional study. PLACE AND DURATION OF STUDY: Department of Nephrology, The Kidney Centre Postgraduate Training Institute (TKCPGTI), Karachi, from November 2017 to January 2018. METHODOLOGY: Clinical records of 38 patients, who have been on thrice weekly hemodialysis for more than ten years at the study centre with registration period from 1989 to 2018, were reviewed. The participants were placed in three groups according to duration of hemodialysis: 10 to 15 years; 15 to 20 years, and >20 years. Background information (age, gender, age at initiation of hemodialysis, cause of renal failure), dialysis dose (urea reduction ratio), anemia (hemoglobin), bone-mineral metabolism (calcium, phosphate and iPTH), and nutrition (albumin) were evaluated. The parameters were compared among the groups and with respect to K/DOQI and EBPG guidelines. RESULTS: Mean age at institution of hemodialysis was 33.5 years. The most common cause of End Stage Renal Disease (ESRD) was of unknown etiology (bilateral small shrunken kidneys). Chronic sclerosing glomerulonephritis was the second most common cause. The mean hemoglobin level was 10.98 +1.4 g/dL. Mean phosphate, calcium and iPTH were 4.75 ±1.34 mg/dL, 9.62 ±0.64 mg/dL and 281.5 pg/ml, respectively. Serum albumin was 3.66 ±0.39 mg/dL. These indexes were comparable to recommended guidelines. CONCLUSION: Clinical characteristics and other profiles of patients on hemodialysis for more than 10 years are comparable to the standard K/DOQI and EPBG guidelines. We believe that complying the standard guidelines for management of patients on chronic hemodialysis can result in better long-term outcome and survival in our population.

Frequency of pregnancy-related complications causing acute kidney injury in pregnant patients at a tertiary care hospital.

Acute kidney injury (AKI) in pregnancy is associated with significant maternal morbidity and mortality. Several studies from worldwide have shown different frequencies of the causes of pregnancy-related AKI (PRAKI). The present study aimed to provide local data on frequency of causes of PRAKI. A total of 111 pregnant women using nonprobability consecutive sampling technique, with the age group of 18-45 years, admitted with the diagnosis of PRAKI were included in the study. The information regarding age, duration of pregnancies, serum creatinine levels, and outcome variables (complications) were collected from each patient. Effect modifiers were controlled by stratification. The mean age was 29.90 ± 5.40 years. Out of 111 cases, 10 (9%) developed AKI in the 1st trimester, 12 (10.8%) in the 2nd trimester, 13 (11.7%) cases in the 3rd trimester, and rest of the 76 (68.4%) cases were of the postpartum period. The etiology of PRAKI was multifactorial in several patients. The frequencies of complication leading to AKI were observed individually. The results showed that 21 (18.9%) had antepartum hemorrhage, 41 (36.9%) postpartum hemorrhage, 33 (29.7%) puerperal sepsis, 11 (9.9%) preeclampsia, 13 (11.7%) eclampsia, 11 (9.9%) hemolysis, elevated liver enzymes, and low-platelet count syndrome, 7 (6.3%) hemolytic uremic syndrome, and 5 (4.5%) had hyperemesis gravidarum. The results of the present study showed no statistically significant association of age with the individual complications with P >0.05. AKI during pregnancy was mostly due to prerenal causes. The most common cause was postpartum hemorrhage followed by puerperal sepsis and antepartum hemorrhage.

Prevalence of subclinical hypothyroidism in patients with chronic kidney disease on maintenance hemodialysis.

The prevalence of subclinical hypothyroidism (SHT) has been reported to be much higher in patients with chronic kidney disease (CKD) than in the general population. SHT has been identified as a strong predictor of mortality and a risk factor for cardiovascular disease in CKD. The study aimed to provide local data on the prevalence of SHT in CKD patients on maintenance hemodialysis (MHD). A total of 72 patients with CKD on MHD were enrolled. Nonprobability consecutive sampling was performed on patients of either gender aged 14-50 years who met the inclusion and exclusion criteria. Thyroid-stimulating hormone and free thyroxine four levels were obtained and interpreted for the presence of SHT. SHT was present in 22 patients (30.6%). When stratified according to age, 22.7% of patients were younger than 30 years, 20.8% between 30 and 40 years and 46.2% were above 40 years. The percentage of patients above 40 years with SHT was much higher, but not statistically significant (P = 0.096). When stratified according to gender, 21.6% were male, and 46.2% were female (P = 0.03). When stratified according to duration on hemodialysis (HD), 4.5% of patients on HD for two years or less had SHT; 25.9% on HD for three to five years and, 60.9% on HD for more than five years had SHT (P <0.01). The study shows a considerably high prevalence of SHT in CKD patients on HD. Routine screening of thyroid functions in these patients, especially in females and those on HD for >5 years, may help in reducing the morbidity and mortality associated with SHT through early detection and timely intervention.

Acute Kidney Injury Secondary to Rhabdomyolysis: A Rare Presentation of Chikungunya Fever.

Chikungunya fever is an arthropod-borne viral illness characterised by high grade fever and incapacitating arthralgias. It is considered benign; however, in the recent outbreaks, several complications have been reported worldwide. We report a case of male patient with Chikungunya fever, possibly contracted from infected mosquitoes endemic in Karachi, Pakistan. The clinical presentation included fever, myalgias and anuria. Investigations revealed renal failure and significantly raised creatinine phosphokinase (CPK), suggesting rhabdomyolysis to be the cause of acute kidney injury (AKI). Rhabdomyolysisis likely occurred due to virus-induced myositis; a rare presentation of Chikungunya fever. The patient gradually recovered from renal failure following supportive care and renal replacement therapy.

Comparison of total direct cost of conventional single use and mechanical reuse of dialyzers in patients of end-stage renal disease on maintenance hemodialysis: A single center study.

Reusing dialyzers is almost universal in developing countries to reduce the cost of hemodialysis (HD). Economic benefits of dialyzer reuse, when estimated only on the basis of the dialyzer and its consumables are very significant and attractive. In this study, we compared the cost of mechanical reuse of dialyzer considering all of the direct costs (medications, dialyzer, and its consumables, disinfection fluid, and hospitalization if any) in HD treatment, which if significantly different between single use and reuse, can nullify the obvious cost benefits. A total of 70 adult patients of any gender on maintenance HD at The Kidney Centre Post Graduate Training Institute for more than three months were included. Equal numbers of patients were on single use (Group A) and reuse of dialyzer (Group B). Both groups were compared for total direct costs of HD over a six months period. Average six monthly total direct cost per patient of Group A was significantly high as compared to Group B, the United States Dollar (USD) 1750.67 ± 135.31$ vs. USD 1488.50 ± 132.23$); difference USD 262.18$ (P <0.001). The total cost saving being 14.97% in Group B. Our study shows that dialyzer reuse provides a significant economic benefit and remains a means of reducing the cost of HD.

Mortality trend among hemodialysis patients during the islamic month of Ramadan: a 24 years retrospective study.

OBJECTIVE: The effect of month of Ramadan on the mortality in hemodialysis patients, and to compare it with that in all other Islamic months. STUDY DESIGN: A descriptive study. PLACE AND DURATION OF STUDY: Hemodialysis Unit, The Kidney Center, Karachi, from January 1989 to December 2012. METHODOLOGY: All those patients who were diagnosed to have end stage kidney disease and on maintenance hemodialysis for more than 3 months, regardless of underlying cause of kidney failure were included. Patients with acute kidney injury were excluded. Status of the patients was recorded at the end of the study period. The fasting status of the patients was not mentioned. The deaths of the patients were further evaluated and frequencies of death in all twelve Islamic months were calculated. RESULTS: A total of 1,841 patients were registered, out of whom 897 (48.7%) died, and 269 (14.6%) survived till the end of the study. One thousand and fifty six (57.3%) were males, 651 (35.4%) were diabetic. Total number of 143 (7.76%) events occurred in Ramadan, out of which 94 patients died which make nearly 11% of the total deaths distributed in 12 Islamic months. Frequency of death was higher in Ramadan when compared with other months. CONCLUSION: Ramadan reflected a higher frequency of death. Therefore, there is a need to evaluate the risk factors in a prospective study so that the dialysis patients can be better managed during this period.

Dialyzer reuse: justified cost saving for south Asian region.

In spite of controversies, dialyzer reuse has remained an integral part of hemodialysis because of lower cost, good overall safety record, and improved membrane biocompatibility. Reuse declined in developed countries from the beginning of this century because of mass production of hemodialyzers at favourable price with better biocompatible membrane. Abandoning dialyzer reuse became challenging in South Asian region, where more than 40% of the population live below the International Poverty Line of $1.25 per day, less than 10% of end stage renal disease patients receive renal replacement therapy, and upto 70% of those starting dialysis stop treatment due to cost within the first 3 months. Dialyzer reuse is an efficient cost-saving method that allows the use of more efficient and expensive biocompatible synthetic membranes, thereby providing high-quality dialysis to individuals living in countries with limited medical resources without compromising the safety or effectiveness of the treatment.

Azotemia protects the brain from osmotic demyelination on rapid correction of hyponatremia.

Osmotic demyelination syndrome (ODS) is a dreadful, irreversible and well-recognized clinical entity that classically occurs after rapid correction of hyponatremia. However, it has been observed that when hyponatremia is rapidly corrected in azotemic patients by hemodialysis (HD), patients do not necessarily develop ODS. We studied the effect of inadvertent rapid correction of hyponatremia with HD in patients with azotemia. Fifty-two azotemic patients, who underwent HD at the Sindh Institute of Urology and Transplantation, having pre-HD serum sodium level <125 mEq/L and post-HD serum sodium levels that increased by ≥12 mEq/L from their pre-dialysis level, were studied. Serum sodium was analyzed before and within 24 h after a HD session. HD was performed using bicarbonate solution, with the sodium concentration being 140 meq/L. The duration of the dialysis session was based on the discretion of the treating nephrologist. Patients were examined for any neurological symptoms or signs before and after HD and for up to two weeks. Magnetic resonance imaging was performed in required cases. None of the 52 patients with azotemia, despite inadvertent rapid correction of hyponatremia with HD, developed ODS. This study suggests that patients with azotemia do not develop ODS on rapid correction of hyponatremia by HD, which suggests a possible protective role of azotemia on the brain from osmotic demyelination. However, the mechanism by which azotemia protects the brain from demyelination in humans is largely hypothetical and further studies are needed to answer this question.