Cerebrovascular disease incidence, characteristics, and outcomes in patients initiating dialysis: the choices for healthy outcomes in caring for ESRD (CHOICE) study.
BACKGROUND
Stroke is the third most common cause of cardiovascular disease death in patients on dialysis therapy; however, characteristics of cerebrovascular disease, including clinical subtypes and subsequent consequences, have not been well described.


METHODS
Prospective national cohort study, the Choices for Healthy Outcomes in Caring for End-Stage Renal Disease (CHOICE) Study.


METHODS
1,041 incident dialysis patients treated in 81 clinics enrolled from October 1995 to July 1998, followed up until December 31, 2004.


METHODS
Time from dialysis therapy initiation.


METHODS
Cerebrovascular disease events were defined as nonfatal (hospitalized stroke and carotid endarterectomy) and fatal (stroke death) events after dialysis therapy initiation. Stroke subtypes were classified by using standardized criteria from the Trial of ORG 10172 in Acute Stroke Treatment (TOAST) system. The incidence of cerebrovascular event subtypes was analyzed by using time-to-event analyses accounting for competing risk of death. Clinical outcomes after stroke were abstracted from medical records.


RESULTS
165 participants experienced a cerebrovascular event with an overall incidence of 4.9 events/100 person-years. Ischemic stroke was the most common (76% of all 200 events), with cardioembolism subtype accounting for 28% of the 95 abstracted ischemic events. Median time from onset of symptoms to first stroke evaluation was 8.5 hours (25th and 75th percentiles, 1 and 42), with only 56% of patients successfully escaping death, nursing home, or skilled nursing facility.


CONCLUSIONS
Relatively small sample size limits power to determine risk factors.


CONCLUSIONS
Cerebrovascular disease is common in dialysis patients, is identified late, and carries a significant risk of morbidity and mortality. Stroke etiologic subtypes on dialysis therapy are multifactorial, suggesting risk factors may change the longer one has end-stage renal disease. Additional studies are needed to address the poor prognosis through prevention, early identification, and treatment.
Sozio
Stephen M
SM
Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA. ssozio@jhmi.edu
Armstrong
Paige A
PA
Coresh
Josef
J
Jaar
Bernard G
BG
Fink
Nancy E
NE
Plantinga
Laura C
LC
Powe
Neil R
NR
Parekh
Rulan S
RS
D000328:Adult; D000368:Aged; D002561:Cerebrovascular Disorders / Q000453:epidemiology* / Q000209:etiology / Q000628:therapy*; D002755:Choice Behavior; D015331:Cohort Studies; D005260:Female; D005500:Follow-Up Studies; D015438:Health Behavior; D006801:Humans; D015994:Incidence; D007676:Kidney Failure, Chronic / Q000150:complications / Q000453:epidemiology* / Q000628:therapy*; D008297:Male; D008875:Middle Aged; D011446:Prospective Studies; D006435:Renal Dialysis / Q000009:adverse effects*; D016896:Treatment Outcome