M M Avram

State University of New York, New York City, New York, United States

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Publications (57)291.64 Total impact

  • D A Blaustein · M M Avram ·

    Kidney International 06/2007; 72(2):225-225. DOI:10.1038/sj.ki.5002348 · 8.56 Impact Factor
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    M M Avram · P A Fein · M A Rafiq · T Schloth · J Chattopadhyay · N Mittman ·
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    ABSTRACT: Nutritional status is associated with clinical outcomes in dialysis patients. Inflammation may cause malnutrition and increases the risk of poor outcomes. We have investigated the relationship between nutritional markers, an inflammatory marker, and survival in 177 peritoneal dialysis (PD) patients, enrolled from 1991 to 2005. In 53 patients, bioimpedance analysis (BIA) measurements were conducted from November 2000. In a subgroup of 42 patients, we measured high-sensitivity C-reactive protein (CRP) and various nutritional markers including prealbumin serially from May 2003. All the patients were followed to April 2006. Mean enrollment albumin and prealbumin levels were 3.61±0.51 g/dl and 35.8±11.3 mg/dl, respectively. Mean and median enrollment CRPs were 13.53±20.81 (s.d.) and 7.15 mg/l, respectively. Higher enrollment levels of nutritional markers such as albumin (P
    Kidney International 12/2006; 70. DOI:10.1038/sj.ki.5001968 · 8.56 Impact Factor
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    D A Blaustein · M H Schwenk · J Chattopadhyay · M M Avram ·
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    ABSTRACT: It is necessary to provide adequate amounts of bioavailable iron to correct any deficit and maintain body iron stores in anemic patients with chronic kidney disease (CKD). Although dosing regimens for intravenous iron sucrose exist, simplification of these regimens may produce financial savings and reduce the time commitment of both patients and clinicians. We have explored high-dose (500 mg or greater) intravenous iron sucrose regimens in patients with CKD and summarize our findings here. Three studies used 500 mg intravenous iron sucrose doses on 2 or more successive days, and one study examined the feasibility of a single total dose infusion of 1000 mg. We conclude that patients do not tolerate 1000 mg doses as a single infusion. On the other hand, a dosing regimen of 500 mg iron sucrose given intravenously over 3 h on successive days is safe and effective in replenishing and maintaining body iron stores. Finally, in anemic CKD patients not receiving erythropoietic hormone therapy, we found an increase in hemoglobin concentrations, and no deleterious effect on glomerular filtration rate 6 months after they were treated with iron sucrose.Keywords: anemia, chronic kidney disease, iron sucrose, ferritin, hemoglobin, therapy
    Kidney International 11/2006; 70:S26-S29. DOI:10.1038/sj.ki.5001973 · 8.56 Impact Factor
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    M M Avram ·

    Kidney International 11/2006; 70:S1-S3. DOI:10.1038/sj.ki.5001967 · 8.56 Impact Factor
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    N Mittman · R Khanna · S Rani · J Chattopadhyay · M M Avram ·
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    ABSTRACT: Secondary hyperparathyroidism (SHPT) is a common complication of chronic kidney disease. The medical management of SHPT in hemodialysis (HD) patients commonly utilizes intravenously administered vitamin D, either calcitriol or newer analogs (paricalcitol or doxercalciferol). Recent published reports have suggested that the use of paricalcitol in HD patients offers a morbidity or mortality advantage in comparison to treatment with calcitriol. The objective of this study was to compare the biochemical markers of SHPT during serial treatment with calcitriol and paricalcitol. We converted all HD patients in our large urban dialysis center from calcitriol to paricalcitol using a 1:3 conversion ratio, based on published data. Demographic, clinical, and laboratory data were collected, and comparisons of individual patient mean values were made after adjusting for equivalent doses. In addition, we recorded the number of missed doses during 6 months of therapy with calcitriol and with paricalcitol. Seventy-three patients were treated with calcitriol for at least 6 months before conversion to paricalcitol, and then completed 6 months of treatment with paricalcitol. Converting from calcitriol to paricalcitol resulted in lower serum calcium (P=0.048), lower calcium-phosphorus product (P=0.014), reduced biointact parathyroid hormone (P=0.029), and reduced serum alkaline phosphatase (P=0.0002). Most dramatically, there was a highly significant difference in the number of missed doses (P<0.0001). This study, the first comparing long-term calcitriol to paricalcitol treatment in the same HD patients, offers several important clues that may explain outcome differences reported in large pooled reports.Keywords: secondary hyperparathyroidism, parathyroid hormone, vitamin D, end-stage renal disease, hemodialysis
    Kidney International 11/2006; 70:S64-S67. DOI:10.1038/sj.ki.5001981 · 8.56 Impact Factor
  • P A Fein · S J Madane · A Jorden · K Babu · R Mushnick · M M Avram · I Grosman ·
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    ABSTRACT: Protein malnutrition is now well established as an important contributory factor to the high mortality in peritoneal dialysis (PD) patients. Low dietary protein calorie intake is one of the factors leading to protein malnutrition. If PD patients develop difficulty eating, percutaneous endoscopic gastrostomy (PEG) feeding may prove beneficial in providing adequate nutrition. Studies on the effectiveness of PEG feeding in PD patients are limited to pediatric patients. The objective of the present study was to assess the outcome of PEG feeding in adult patients with end-stage renal disease (ESRD) on PD. We retrospectively reviewed charts from May 1992 to February 2000 of 10 consecutive patients in our center who had had feeding tubes inserted. The patients' ages ranged from 37 to 81 years, with mean age of 65. Of the 10 patients, 7 were male, 5 were diabetic, and 1 was infected with the human immunodeficiency virus. Two patients had cerebrovascular accident (CVA) with dysphagia, 3 had multi-infarct dementia, 2 had anoxic encephalopathy, 2 had dementia, and 1 had calciphylaxis with anorexia. Of the 10 patients, 9 failed to eat because of neurologic disorders. Two patients who had functioning PEG feedings before starting PD had no complications. Only 2 of 8 patients already on PD continued with long-term PD after a PEG was inserted. Both patients whose PD was not interrupted at the time of PEG placement immediately developed peritonitis. Of the 6 patients who were maintained on hemodialysis (HD), 2 developed peritonitis within one week of starting PEG feedings. The other 4 had no complications from PEG feedings while being maintained on HD, but 1 developed peritonitis when PD was resumed. Of the 5 patients who developed peritonitis, 3 experienced fungal peritonitis. In PD patients, PEG feeding is associated with frequent complications. However, PEG placement prior to PD initiation appears to be safe. Maintaining patients on HD for at least 6 weeks appears to decrease the incidence of peritonitis, but does not eliminate it. Use of anti-fungal prophylaxis and maintenance of the patient on HD for longer than 6 weeks may produce better results.
    Advances in peritoneal dialysis. Conference on Peritoneal Dialysis 02/2001; 17:148-52.
  • N. Mittman · R. Sreedhara · K. K. Oo · J. Chattopadhyay · M. M. Avram ·

    ASAIO Journal 03/2000; 46(2). DOI:10.1097/00002480-200003000-00252 · 1.52 Impact Factor
  • M. M. Avram · N. Mittman · R. Sreedhara · A. Henry · J. Chattopadhyay ·

    ASAIO Journal 03/2000; 46(2). DOI:10.1097/00002480-200003000-00250 · 1.52 Impact Factor
  • N Mittman · A Bista · R Sreedhara · A Thomas · M Prabhakara · M M Avram ·

    ASAIO Journal 03/1999; 45(2). DOI:10.1097/00002480-199903000-00263 · 1.52 Impact Factor
  • M M Avram · R Sreedhara · N Mittman ·

    ASAIO Journal 03/1997; 43(2). DOI:10.1097/00002480-199703000-00286 · 1.52 Impact Factor
  • Rajanna Sreedhara · Mathew M. Avram · Marta Blanco · Rajesh Batish · Neal Mittman ·
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    ABSTRACT: Patients undergoing dialytic therapy for end-stage renal disease (ESRD) have greater morbidity and mortality than age-matched individuals with similar demographics in the general population. Risk factors for early death during treatment for ESRD include advanced age, diabetes, hypertension, and malnutrition. We questioned whether the level of serum prealbumin at the start of uremia therapy might serve as a marker of subsequent survival in patients treated with maintenance hemodialysis (HD) and peritoneal dialysis (PD). Study cohorts included 111 HD and 78 PD patients followed for up to 5 years. Selected demographic characteristics and biochemical variables were tested for correlation with survival in each cohort. Variables evaluated included age, race, gender, diabetic status, and serum concentrations of albumin, creatinine, cholesterol, and prealbumin. For comparison, expected survival was calculated with Cox proportional hazards analysis, which accounts for confounding variables. We found that a higher relative risk (RR) of death in HD patients correlated with older age, the diagnosis of diabetes, and a serum prealbumin < 30 mg/dL. In PD patients, older age and the presence of diabetes correlated with a higher RR of death than in the standard population. When nutritional variables were analyzed separately, prealbumin < 30 mg/dL was the strongest variable that predicted mortality in HD patients (RR = 2.64, P = 0.002) and also predicted increased risk of mortality in PD patients (RR = 1.8, P = 0.035). Observed and expected survival was significantly higher in patients with enrollment prealbumin greater than 30 mg/dL in both HD and PD. The serum prealbumin level correlated significantly with other measures of nutrition, including serum albumin, serum creatinine, and serum cholesterol, in both HD and PD patients. Among tested markers of nutritional status, prealbumin level appears to be the single best nutritional predictor of survival in ESRD patients.
    American Journal of Kidney Diseases 12/1996; 28(6):937-42. DOI:10.1016/S0272-6386(96)90398-4 · 5.90 Impact Factor
  • N Mittman · M M Avram ·
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    ABSTRACT: In summary, dyslipidemia is a common feature of various renal syndromes. Whether this perturbed lipid metabolism results in accelerated atherosclerosis and increased cerebrovascular and cardiovascular morbidity and mortality remains a subject of inquiry. Also undefined is the role of dyslipidemia in the progression of renal injury. The malnutrition that becomes a dominant morbid feature in patients on maintenance renal replacement therapy provides a caveat against aggressive intervention for modest hyperlipidemia once dialysis is instituted. Individualized assessment of end organ atherosclerotic disease and cardiovascular risk factors should form the basis for modification of the treatment plan (ie, pharmacological intervention) should nonpharmacological means prove ineffective.
    Seminars in Nephrology 06/1996; 16(3):202-13. · 3.48 Impact Factor
  • M. M. Avram · N. Mittman · N Patel · J Chattopadhyay · R. Sreedhara ·

    ASAIO Journal 04/1996; 42(2). DOI:10.1097/00002480-199604000-00302 · 1.52 Impact Factor
  • N. Mittman · M M Avram · K. OO · J. Licht ·

    ASAIO Journal 04/1996; 42(2). DOI:10.1097/00002480-199604000-00301 · 1.52 Impact Factor
  • N Mittman · M M Avram · K Oo · J Licht · R. Sreedhara ·

    ASAIO Journal 03/1996; 42(2). DOI:10.1097/00002480-199603000-00300 · 1.52 Impact Factor
  • M M Avram · N Mittman · N Patel · J Chattopadhyay · R Sreedhara ·

    ASAIO Journal 03/1996; 42(2):80. DOI:10.1097/00002480-199603000-00301 · 1.52 Impact Factor
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    ABSTRACT: Our objective was to examine the influence of various demographic, clinical, and enrollment biochemical variables on the long-term survival of continuous ambulatory peritoneal dialysis (CAPD) patients. This was a prospective cohort study investigating the relationship between demographics and enrollment biochemical markers and mortality in CAPD patients in a CAPD unit in a large tertiary care teaching hospital. One hundred and sixty-nine patients in the CAPD program were enrolled between 1989 and 1994, and were followed up to 60 months. Independent predictors of mortality determined by Cox proportional hazards model included age, diabetes, serum albumin and creatinine. Enrollment level of serum albumin, and creatine can predict mortality in CAPD patients up to 60 months. Markers of visceral and somatic nutrition at enrollment are important predictors of mortality in CAPD patients up to five years.
    Peritoneal dialysis international: journal of the International Society for Peritoneal Dialysis 02/1996; 16 Suppl 1:S190-4. · 1.53 Impact Factor
  • M M Avram · R Sreedhara · N Patel · J Chattopadhyay · T Thu · P Fein ·
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    ABSTRACT: Cardiovascular disease (CVD) is the single most important cause of mortality in hemodialysis (HD) and continuous ambulatory peritoneal dialysis (CAPD) patients. An increased lipoprotein (a) [Lp(a)] level in HD patients is associated with CVD. However, Lp(a) levels in CAPD patients are controversial, and their association with CVD has not been established. In the present study, prevalent CAPD and HD patients [excluding those who were human immunodeficiency virus (HIV)-positive] attending the Long Island College Hospital from June, 1990 to July, 1995 underwent analysis of lipid profile including Lp(a). Total and low-density lipoprotein cholesterol, triglycerides, apolipoprotein (apo) A, and apo B were all significantly increased in CAPD patients compared to HD patients. Serum Lp(a) levels were also significantly higher in CAPD patients than in HD patients (51 +/- 32 vs 34 +/- 23 mg/dL, p < 0.001). CAPD patients who had a history of myocardial infarction (MI) or coronary artery disease (CAD) at enrollment had significantly higher Lp(a) levels compared to those who did not have a history of MI or CAD. CAPD patients who died of CVD had higher Lp(a) levels than patients who died of non-CVD causes. In the Cox model with backward stepwise selection, a history of CVD was associated with a significantly elevated relative risk (RR) of mortality (RR = 1.84, p = 0.014). Expected survival by all causes of mortality and by cardiac mortality was significantly shorter in patients with a history of CVD than in those without a history of CVD. Thus, elevated Lp(a) is related to increased CVD and therefore may contribute to increased mortality in CAPD patients.
    Advances in peritoneal dialysis. Conference on Peritoneal Dialysis 02/1996; 12:266-71.
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    ABSTRACT: Serum biochemical markers suggestive of undernutrition are directly correlated with mortality in hemodialysis and peritoneal dialysis patients. In particular, serum albumin is the most powerful predictor of survival. We have prospectively examined the relationship of single baseline measurements of serum albumin, cholesterol, creatinine, apoproteins, and prealbumin in 250 hemodialysis patients and 140 patients maintained on continuous ambulatory peritoneal dialysis (CAPD) monitored up to 7 years (1987 to 1994). Other variables studied included age, race, gender, diabetes, and number of months on dialysis. Observed survival was computed by the Kaplan-Meier method. Cox's proportional hazards model was used to determine independent predictors of mortality risk. Age, diabetes, prior months on dialysis, and low levels of serum albumin, creatinine, and cholesterol were important and independent predictors of mortality risk in hemodialysis patients. For peritoneal dialysis patients, the independent predictors of mortality risk were age, diabetes, and low serum albumin and serum creatinine. Prealbumin, a serum protein with rapid turnover and relatively small pool, was an important and independent risk predictor in both hemodialysis and CAPD patients. In addition, prealbumin was more highly correlated with other nutritional markers than was albumin. In summary, these findings suggest that biochemical measures associated with visceral and somatic protein depletion are predominant long-term mortality risk factors in patients maintained on hemodialysis and CAPD.
    American Journal of Kidney Diseases 08/1995; 26(1):209-19. DOI:10.1016/0272-6386(95)90176-0 · 5.90 Impact Factor
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    ABSTRACT: Vascular access occlusion results in significant morbidity in hemodialysis patients. Age, diabetes, and synthetic grafts (polytetrafluoroethylene [PTFE]) have been associated with vascular access occlusion in univariate analysis. However, the independent risk associated with each of these factors has not been assessed adjusting for confounding among the factors or by other variables, such as blood pressure (BP) or hematocrit. The influence of serum lipoprotein(a) [Lp(a)] and fibronectin on vascular access occlusion has not been widely studied despite their theoretical or demonstrated importance in vascular bypass occlusion. In a cohort study of 124 hemodialysis patients monitored for up to 14 months, we reported that Lp(a) values in the upper tertile (> or = 57 mg/dL) were associated with vascular access occlusion risk in white and Hispanic patients, but not in black patients. We now report an expanded analysis of this data set to determine the independent correlates of vascular access occlusion. Variables tested included age, race, gender, diabetes, access type (PTFE v endogenous), treatment time, systolic BP, hematocrit, heparin and erythropoietin dosage, and serum levels of Lp(a) and fibronectin. In univariate analysis, access occlusion was associated with age, diabetes, PTFE, Lp(a) > or = 57 mg/dL, serum fibronectin, and reduced BP. The independent correlates of first access occlusion were determined with the Cox proportional hazards model. Since the overall model included a significant race x Lp(a) interaction term, we stratified by race. In black patients, risk correlated directly with PTFE (P < 0.01) and inversely with systolic BP (P < 0.001), whereas for white and Hispanic patients, age (P = 0.04) and Lp(a) > or = 57 mg/dL (P = 0.05) were associated with increased risk. In summary, vascular access occlusion was found to be associated with a number of factors. Important independent correlates were PTFE and lower BP in black patients, and age and serum Lp(a) > or = 57 mg/dL in white and Hispanic patients. Diabetes mellitus and increased serum fibronectin may contribute additional risk.
    American Journal of Kidney Diseases 11/1994; 24(5):785-94. DOI:10.1016/S0272-6386(12)80672-X · 5.90 Impact Factor