Introduction: Scores are available to predict the probability of contrast-induced nephropathy (CI... more Introduction: Scores are available to predict the probability of contrast-induced nephropathy (CIN) after cardiac interventions, but not many scores are available for non-cardiac interventions and there are none for intravenous exposure to contrast. We designed this study to develop a simplified score to determine the probability of developing CIN in patients exposed to the parenteral contrast medium. Methods: This was a prospective study of patients who received parenteral contrast. Of 1300 patients, the first 1000 comprised the derivation cohort and the next 300 comprised the validation cohort. The patient variables in the development cohort were studied using univariate analysis. Statistically significant individual variables were used as independent variables, and CIN was used as the dependent variable in the final multivariate logistic regression model. Then, the risk score was obtained and validated. Results: The incidence of CIN was 3.8%. The risk factors, namely the presence...
Saudi Journal of Kidney Diseases and Transplantation
It is essential to determine the optimum protein intake in renal transplant recipients on steroid... more It is essential to determine the optimum protein intake in renal transplant recipients on steroids with renal dysfunction to maintain a neutral nitrogen balance. Our aim was to study the effect of higher (1.2 g/kg/day) and lower (0.8 g/kg/day) protein intakes on nitrogen balance, body composition, glomerular filtration rate (GFR), and proteinuria in renal transplant recipients with low estimated GFR (eGFR) (15–44 mL/min/1.73 m2). This prospective, open-labeled, randomized, cross-over, interventional study enrolled patients who were ≥4 months posttransplant with eGFR between 15 and 44 mL/min/1.73 m2. Subjects were randomized to either Group 1 [Diet: proteins (1.2 g/kg/day), 35 kcal/kg/day] or Group 2 [Diet: proteins (0.8 g/kg/day) and 35 kcal/kg/day] for one month. Subjects crossed over to the other diet for 2nd month. Body composition analysis, serum creatinine, blood urea nitrogen, serum protein, serum albumin, 24-h proteinuria, GFR measurement (24 h creatinine clearance), three-da...
Despite the availability of multiple therapies for chronic kidney disease (CKD), there still exis... more Despite the availability of multiple therapies for chronic kidney disease (CKD), there still exists an unmet need for better options to slow down disease progression and prevent complications. The Dapagliflozin and Prevention of Adverse Outcomes in CKD (DAPA-CKD) trial, which demonstrated the renoprotective effects of the sodium-glucose cotransporter-2 inhibitor (SGLT2i) dapagliflozin, independent of diabetes, with improved survival, even in patients with CKD with estimated glomerular filtration rate (eGFR) as low as 25 mL/min/1.73 m2 , has highlighted the potential beneficial role of SGLT2i in patients with CKD. These benefits were also achieved in patients who were already receiving optimal therapies for slowing the progression of CKD. The potential candidature of SGLT2i for CKD therapy is now being widely discussed in the nephrology community. Therefore, a consensus meeting was held in September 2020 with a group of expert nephrologists from India, to discuss the need to improve ...
Aim: Tacrolimus has proven efficacy as an immunosuppressive therapy to prevent transplant rejecti... more Aim: Tacrolimus has proven efficacy as an immunosuppressive therapy to prevent transplant rejection and is widely used as an immediate-release formulation in a twice-daily regimen. Once-daily prolonged-release tacrolimus aims to improve the outcomes by reducing variability in exposure and improving adherence. However, there are limited published data available on prolonged-release tacrolimus in routine clinical practice in India. Methods: This was a Phase IV, multicenter, prospective study of prolonged-release tacrolimus conducted over 12 weeks in adult patients eligible for de novo kidney or liver transplantation in India. Primary efficacy end-point was the event rate of biopsy-confirmed acute rejections (BCARs). Secondary end-points included corticosteroid-resistant rejection incidence, time to first BCAR, graft loss, and death. Safety end-points included renal function, lipid profile, incidence of new-onset diabetes mellitus after transplantation (NODAT), and infection. Results: The study enrolled 92 patients undergoing kidney (81 [88.0%]) or liver transplantation (11 [12.0%]); a total of 76 patients (82.6%) completed the study. Ten kidney transplant patients (overall 10.9%) experienced BCAR. There were seven corticosteroid-sensitive and three corticosteroid-resistant rejections. Median (range) time to kidney transplant rejection was 6.5 (1.0–76.0) days. Renal function was stable or improved. Lipid levels showed a significant increase. Eleven instances of NODAT and seven infections occurred and there were eight deaths (8.7%; six kidney and two liver transplant patients). Conclusions: In de novo kidney and liver transplant recipients in India, prolonged-release tacrolimus was well-tolerated and efficacious with a low incidence of acute rejection. Safety profile was similar to immediate-release tacrolimus from published data.
The Journal of the Association of Physicians of India, 2018
Paradoxical response (PR) in patients on anti-tuberculosis drugs and immune reconstitution inflam... more Paradoxical response (PR) in patients on anti-tuberculosis drugs and immune reconstitution inflammatory syndrome (IRIS) in patients started on antiretroviral therapy are well known phenomenon. We encountered a case of a paradoxical response in cerebral nocardiosis in a renal transplant recipient. To our knowledge this phenomenon in cerebral nocardiosis has not been reported earlier in literature.
Background: Hemodialysis among critical care patients with acute kidney injury (AKI) is challengi... more Background: Hemodialysis among critical care patients with acute kidney injury (AKI) is challenging, especially if heparin is contraindicated. Objectives: This study assessed the utility of citrate dialysis for such patients in a limited-resource setting. Methods: In this prospective study, patients were divided into group A (heparin-free saline flush dialysis), group B (heparin-free citrate dialysis without flushing), and group C (heparin-free citrate dialysis with flushing). The subjects underwent completed sustained low-efficiency daily dialysis (blood flow = 150 mL/minute, dialysate = 300 mL/minute) or intermittent hemodialysis (blood flow = 250 mL/minute, dialysate flow = 500 mL/minute). Statistical tests using SPSS software (version 26) were used to determine safety and effectiveness differences. Results: Among 25 patients studied with multiple hemodialysis sessions, blood flow and dialysate flow were observed to be better in heparin-free citrate dialysis with flushing. There ...
Epidemiology and risk factors of chronic kidney disease in India – results from the SEEK in non-C... more Epidemiology and risk factors of chronic kidney disease in India – results from the SEEK in non-CKD group while 79.5 % in the CKD group had proteinuria. Prevalence of CKD stages 1, 2, 3, 4 and 5 was 7%, Singh et al. BMC Nephrology 2013, 14:114
Introduction: Scores are available to predict the probability of contrast-induced nephropathy (CI... more Introduction: Scores are available to predict the probability of contrast-induced nephropathy (CIN) after cardiac interventions, but not many scores are available for non-cardiac interventions and there are none for intravenous exposure to contrast. We designed this study to develop a simplified score to determine the probability of developing CIN in patients exposed to the parenteral contrast medium. Methods: This was a prospective study of patients who received parenteral contrast. Of 1300 patients, the first 1000 comprised the derivation cohort and the next 300 comprised the validation cohort. The patient variables in the development cohort were studied using univariate analysis. Statistically significant individual variables were used as independent variables, and CIN was used as the dependent variable in the final multivariate logistic regression model. Then, the risk score was obtained and validated. Results: The incidence of CIN was 3.8%. The risk factors, namely the presence...
Saudi Journal of Kidney Diseases and Transplantation
It is essential to determine the optimum protein intake in renal transplant recipients on steroid... more It is essential to determine the optimum protein intake in renal transplant recipients on steroids with renal dysfunction to maintain a neutral nitrogen balance. Our aim was to study the effect of higher (1.2 g/kg/day) and lower (0.8 g/kg/day) protein intakes on nitrogen balance, body composition, glomerular filtration rate (GFR), and proteinuria in renal transplant recipients with low estimated GFR (eGFR) (15–44 mL/min/1.73 m2). This prospective, open-labeled, randomized, cross-over, interventional study enrolled patients who were ≥4 months posttransplant with eGFR between 15 and 44 mL/min/1.73 m2. Subjects were randomized to either Group 1 [Diet: proteins (1.2 g/kg/day), 35 kcal/kg/day] or Group 2 [Diet: proteins (0.8 g/kg/day) and 35 kcal/kg/day] for one month. Subjects crossed over to the other diet for 2nd month. Body composition analysis, serum creatinine, blood urea nitrogen, serum protein, serum albumin, 24-h proteinuria, GFR measurement (24 h creatinine clearance), three-da...
Despite the availability of multiple therapies for chronic kidney disease (CKD), there still exis... more Despite the availability of multiple therapies for chronic kidney disease (CKD), there still exists an unmet need for better options to slow down disease progression and prevent complications. The Dapagliflozin and Prevention of Adverse Outcomes in CKD (DAPA-CKD) trial, which demonstrated the renoprotective effects of the sodium-glucose cotransporter-2 inhibitor (SGLT2i) dapagliflozin, independent of diabetes, with improved survival, even in patients with CKD with estimated glomerular filtration rate (eGFR) as low as 25 mL/min/1.73 m2 , has highlighted the potential beneficial role of SGLT2i in patients with CKD. These benefits were also achieved in patients who were already receiving optimal therapies for slowing the progression of CKD. The potential candidature of SGLT2i for CKD therapy is now being widely discussed in the nephrology community. Therefore, a consensus meeting was held in September 2020 with a group of expert nephrologists from India, to discuss the need to improve ...
Aim: Tacrolimus has proven efficacy as an immunosuppressive therapy to prevent transplant rejecti... more Aim: Tacrolimus has proven efficacy as an immunosuppressive therapy to prevent transplant rejection and is widely used as an immediate-release formulation in a twice-daily regimen. Once-daily prolonged-release tacrolimus aims to improve the outcomes by reducing variability in exposure and improving adherence. However, there are limited published data available on prolonged-release tacrolimus in routine clinical practice in India. Methods: This was a Phase IV, multicenter, prospective study of prolonged-release tacrolimus conducted over 12 weeks in adult patients eligible for de novo kidney or liver transplantation in India. Primary efficacy end-point was the event rate of biopsy-confirmed acute rejections (BCARs). Secondary end-points included corticosteroid-resistant rejection incidence, time to first BCAR, graft loss, and death. Safety end-points included renal function, lipid profile, incidence of new-onset diabetes mellitus after transplantation (NODAT), and infection. Results: The study enrolled 92 patients undergoing kidney (81 [88.0%]) or liver transplantation (11 [12.0%]); a total of 76 patients (82.6%) completed the study. Ten kidney transplant patients (overall 10.9%) experienced BCAR. There were seven corticosteroid-sensitive and three corticosteroid-resistant rejections. Median (range) time to kidney transplant rejection was 6.5 (1.0–76.0) days. Renal function was stable or improved. Lipid levels showed a significant increase. Eleven instances of NODAT and seven infections occurred and there were eight deaths (8.7%; six kidney and two liver transplant patients). Conclusions: In de novo kidney and liver transplant recipients in India, prolonged-release tacrolimus was well-tolerated and efficacious with a low incidence of acute rejection. Safety profile was similar to immediate-release tacrolimus from published data.
The Journal of the Association of Physicians of India, 2018
Paradoxical response (PR) in patients on anti-tuberculosis drugs and immune reconstitution inflam... more Paradoxical response (PR) in patients on anti-tuberculosis drugs and immune reconstitution inflammatory syndrome (IRIS) in patients started on antiretroviral therapy are well known phenomenon. We encountered a case of a paradoxical response in cerebral nocardiosis in a renal transplant recipient. To our knowledge this phenomenon in cerebral nocardiosis has not been reported earlier in literature.
Background: Hemodialysis among critical care patients with acute kidney injury (AKI) is challengi... more Background: Hemodialysis among critical care patients with acute kidney injury (AKI) is challenging, especially if heparin is contraindicated. Objectives: This study assessed the utility of citrate dialysis for such patients in a limited-resource setting. Methods: In this prospective study, patients were divided into group A (heparin-free saline flush dialysis), group B (heparin-free citrate dialysis without flushing), and group C (heparin-free citrate dialysis with flushing). The subjects underwent completed sustained low-efficiency daily dialysis (blood flow = 150 mL/minute, dialysate = 300 mL/minute) or intermittent hemodialysis (blood flow = 250 mL/minute, dialysate flow = 500 mL/minute). Statistical tests using SPSS software (version 26) were used to determine safety and effectiveness differences. Results: Among 25 patients studied with multiple hemodialysis sessions, blood flow and dialysate flow were observed to be better in heparin-free citrate dialysis with flushing. There ...
Epidemiology and risk factors of chronic kidney disease in India – results from the SEEK in non-C... more Epidemiology and risk factors of chronic kidney disease in India – results from the SEEK in non-CKD group while 79.5 % in the CKD group had proteinuria. Prevalence of CKD stages 1, 2, 3, 4 and 5 was 7%, Singh et al. BMC Nephrology 2013, 14:114
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Papers by Alan Almeida