Chronic kidney disease and end-stage renal disease predict higher risk of mortality in patients with primary upper gastrointestinal bleeding.
BACKGROUND
The outcome of gastrointestinal bleeding in chronic kidney disease (CKD) and end-stage renal disease (ESRD) patients is difficult to discern from the literature. Many publications are small, single-center series or are from an era prior to advanced interventional endoscopy, widespread use of proton pump inhibitors or treatment for Helicobacter pylori infections. In this study, we quantify the role of CKD and ESRD as independent predictors of mortality in patients admitted to the hospital with a principal diagnosis of primary upper gastrointestinal bleeding (UGIB).


METHODS
We used the Nationwide Inpatient Sample that contains data on approximately 8 million admissions in 1,000 hospitals chosen to approximate a 20% stratified sample of all US facilities. Patients discharged with the principal diagnosis of primary UGIB, CKD or ESRD were identified through the ninth revision of the International Classification of Diseases, clinical modification (ICD-9-CM) codes. The outcome variables included frequency and in-hospital mortality of UGIB in CKD and ESRD patients as compared to non-CKD patients and were analyzed using logistic regression modeling.


RESULTS
In 2007, out of a total of 398,213 admissions with a diagnosis of primary UGIB, 35,985 were in CKD, 14,983 in ESRD, and 347,245 in non-renal disease groups. The OR for primary UGIB hospitalization in CKD and ESRD was 1.30 (95% CI 1.17-1.46) and 1.84 (95% CI 1.61-2.09), respectively. The corresponding all-cause mortality OR was 1.47 (95% CI 1.21-1.78) and 3.02 (95% CI 2.23-4.1), respectively.


CONCLUSIONS
Patients with CKD or ESRD admitted with primary UGIB have up to three times higher risk of all-cause in-hospital mortality, warranting heightened vigilance by their clinicians.
Division of Nephrology, Medical College of Wisconsin, Milwaukee, USA. psood@mcw.edu
Puneet
P
Sood
Gagan
G
Kumar
Rahul
R
Nanchal
Ankit
A
Sakhuja
Shahryar
S
Ahmad
Muhammad
M
Ali
Nilay
N
Kumar
Edward A
EA
Ross
D000293:Adolescent; D000328:Adult; D000368:Aged; D005260:Female; D006471:Gastrointestinal Hemorrhage / Q000150:complications* / Q000401:mortality*; D017052:Hospital Mortality; D006801:Humans; D007676:Kidney Failure, Chronic / Q000150:complications*; D008297:Male; D008875:Middle Aged; D051436:Renal Insufficiency, Chronic / Q000150:complications*; D012307:Risk Factors; D014481:United States / Q000453:epidemiology; D041742:Upper Gastrointestinal Tract