Influence of coexisting disease on survival on renal-replacement therapy

Survival of patients on renal-replacement therapy (RRT) is no longer improving. Increasingly, such patients are older and have co-morbid conditions affecting organs other than the kidney. In a retrospective study, we calculated actuarial survival of 375 patients starting RRT during a 61/2 year perio...

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Veröffentlicht in:The Lancet (British edition) 1993-02, Vol.341 (8842), p.415-418
Hauptverfasser: Khan, I.H., Catto, G.R.D., MacLeod, A.M., Edward, N., Fleming, L.W., Henderson, I.S.
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container_issue 8842
container_start_page 415
container_title The Lancet (British edition)
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creator Khan, I.H.
Catto, G.R.D.
MacLeod, A.M.
Edward, N.
Fleming, L.W.
Henderson, I.S.
description Survival of patients on renal-replacement therapy (RRT) is no longer improving. Increasingly, such patients are older and have co-morbid conditions affecting organs other than the kidney. In a retrospective study, we calculated actuarial survival of 375 patients starting RRT during a 61/2 year period at renal units in Aberdeen and Dundee, UK, after stratification of patients into three risk groups (low, medium, and high) based predominantly on co-morbidity and to a lesser extent on age. 2-year survival differed significantly between low, medium, and high risk groups both before (86%, 60%, and 35%, respectively; p < 0·002 for all comparisons) and after (90%, 70%, 46%; p < 0·004 for all comparisons) excluding early deaths (within 90 days of starting RRT). Overall survival was 61 % in Aberdeen and 68% in Dundee (p=0·04), but 73% and 74%, respectively, when deaths in the first 90 days were excluded (p=0·73). We conclude that RRT is a highly successful treatment (86% 2-year survival) for patients aged under 70 with no co-morbid conditions (low-risk group); that coexisting non-renal disease has an important influence on survival of patients on RRT; and that risk stratification and analysis of data including and excluding early deaths should allow more valid comparison of data from different centres.
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Increasingly, such patients are older and have co-morbid conditions affecting organs other than the kidney. In a retrospective study, we calculated actuarial survival of 375 patients starting RRT during a 61/2 year period at renal units in Aberdeen and Dundee, UK, after stratification of patients into three risk groups (low, medium, and high) based predominantly on co-morbidity and to a lesser extent on age. 2-year survival differed significantly between low, medium, and high risk groups both before (86%, 60%, and 35%, respectively; p &lt; 0·002 for all comparisons) and after (90%, 70%, 46%; p &lt; 0·004 for all comparisons) excluding early deaths (within 90 days of starting RRT). Overall survival was 61 % in Aberdeen and 68% in Dundee (p=0·04), but 73% and 74%, respectively, when deaths in the first 90 days were excluded (p=0·73). We conclude that RRT is a highly successful treatment (86% 2-year survival) for patients aged under 70 with no co-morbid conditions (low-risk group); that coexisting non-renal disease has an important influence on survival of patients on RRT; and that risk stratification and analysis of data including and excluding early deaths should allow more valid comparison of data from different centres.</description><identifier>ISSN: 0140-6736</identifier><identifier>EISSN: 1474-547X</identifier><identifier>DOI: 10.1016/0140-6736(93)93003-J</identifier><identifier>PMID: 8094182</identifier><identifier>CODEN: LANCAO</identifier><language>eng</language><publisher>London: Elsevier Ltd</publisher><subject>Adolescent ; Adult ; Aged ; Aged, 80 and over ; Biological and medical sciences ; Child ; Comorbidity ; Data processing ; Fatalities ; Female ; Health risk assessment ; Humans ; Kidney Failure, Chronic - complications ; Kidney Failure, Chronic - therapy ; Kidney Transplantation - mortality ; Kidneys ; Male ; Medical disorders ; Medical research ; Medical sciences ; Middle Aged ; Morbidity ; Organs ; Patients ; Renal Dialysis - mortality ; Retrospective Studies ; Risk analysis ; Risk groups ; Surgery (general aspects). 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Increasingly, such patients are older and have co-morbid conditions affecting organs other than the kidney. In a retrospective study, we calculated actuarial survival of 375 patients starting RRT during a 61/2 year period at renal units in Aberdeen and Dundee, UK, after stratification of patients into three risk groups (low, medium, and high) based predominantly on co-morbidity and to a lesser extent on age. 2-year survival differed significantly between low, medium, and high risk groups both before (86%, 60%, and 35%, respectively; p &lt; 0·002 for all comparisons) and after (90%, 70%, 46%; p &lt; 0·004 for all comparisons) excluding early deaths (within 90 days of starting RRT). Overall survival was 61 % in Aberdeen and 68% in Dundee (p=0·04), but 73% and 74%, respectively, when deaths in the first 90 days were excluded (p=0·73). We conclude that RRT is a highly successful treatment (86% 2-year survival) for patients aged under 70 with no co-morbid conditions (low-risk group); that coexisting non-renal disease has an important influence on survival of patients on RRT; and that risk stratification and analysis of data including and excluding early deaths should allow more valid comparison of data from different centres.</description><subject>Adolescent</subject><subject>Adult</subject><subject>Aged</subject><subject>Aged, 80 and over</subject><subject>Biological and medical sciences</subject><subject>Child</subject><subject>Comorbidity</subject><subject>Data processing</subject><subject>Fatalities</subject><subject>Female</subject><subject>Health risk assessment</subject><subject>Humans</subject><subject>Kidney Failure, Chronic - complications</subject><subject>Kidney Failure, Chronic - therapy</subject><subject>Kidney Transplantation - mortality</subject><subject>Kidneys</subject><subject>Male</subject><subject>Medical disorders</subject><subject>Medical research</subject><subject>Medical sciences</subject><subject>Middle Aged</subject><subject>Morbidity</subject><subject>Organs</subject><subject>Patients</subject><subject>Renal Dialysis - mortality</subject><subject>Retrospective Studies</subject><subject>Risk analysis</subject><subject>Risk groups</subject><subject>Surgery (general aspects). 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Increasingly, such patients are older and have co-morbid conditions affecting organs other than the kidney. In a retrospective study, we calculated actuarial survival of 375 patients starting RRT during a 61/2 year period at renal units in Aberdeen and Dundee, UK, after stratification of patients into three risk groups (low, medium, and high) based predominantly on co-morbidity and to a lesser extent on age. 2-year survival differed significantly between low, medium, and high risk groups both before (86%, 60%, and 35%, respectively; p &lt; 0·002 for all comparisons) and after (90%, 70%, 46%; p &lt; 0·004 for all comparisons) excluding early deaths (within 90 days of starting RRT). Overall survival was 61 % in Aberdeen and 68% in Dundee (p=0·04), but 73% and 74%, respectively, when deaths in the first 90 days were excluded (p=0·73). We conclude that RRT is a highly successful treatment (86% 2-year survival) for patients aged under 70 with no co-morbid conditions (low-risk group); that coexisting non-renal disease has an important influence on survival of patients on RRT; and that risk stratification and analysis of data including and excluding early deaths should allow more valid comparison of data from different centres.</abstract><cop>London</cop><pub>Elsevier Ltd</pub><pmid>8094182</pmid><doi>10.1016/0140-6736(93)93003-J</doi><tpages>4</tpages></addata></record>
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subjects Adolescent
Adult
Aged
Aged, 80 and over
Biological and medical sciences
Child
Comorbidity
Data processing
Fatalities
Female
Health risk assessment
Humans
Kidney Failure, Chronic - complications
Kidney Failure, Chronic - therapy
Kidney Transplantation - mortality
Kidneys
Male
Medical disorders
Medical research
Medical sciences
Middle Aged
Morbidity
Organs
Patients
Renal Dialysis - mortality
Retrospective Studies
Risk analysis
Risk groups
Surgery (general aspects). Transplantations, organ and tissue grafts. Graft diseases
Surgery of the urinary system
Survival
Survival Rate
Therapy
title Influence of coexisting disease on survival on renal-replacement therapy
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