title: Prophylactic hemodialysis does not prevent contrast-induced nephropathy after cardiac catheterization in patients with chronic renal insufficiency.
abstract: BACKGROUND
  In Japan, prophylactic hemodialysis has been considered useful for preventing contrast-induced nephropathy (CIN).
  
  
  RESULTS
  To assess whether hemodialysis prevented CIN, 391 patients (age: 69 +/- 8 years, 63 females) with chronic renal insufficiency (CRI, serum creatinine level (Scr) > or = 1.3 mg/dl) who underwent cardiac catheterization, were retrospectively analyzed. Patients were divided into 3 categories based on Scr: L (1.3 > or = Scr < 2.0 mg/dl, n = 332); M (2.0 > or = Scr < 3.0 mg/dl, n = 49); and H (Scr > or = 3.0 mg/dl, n = 10). To prevent CIN, 35 category M patients and all category L patients received hydration alone, whereas 14 category M patients and all category H patients received hemodialysis. CIN developed in 48 patients. The incidence of CIN in category H was significantly higher than that in category L or M (H, 40% vs L, 11% or M, 16% (p < 0.05)). In category M patients treated with hemodialysis, Scr increased from 2.4 +/- 0.3 to 3.0 +/- 0.5 mg/dl (p < 0.05) within 7 days, and 29% of patients developed CIN. However, in category M patients who did not receive hemodialysis, the Scr did not change (pre, 2.3 +/- 0.2 mg/dl to post, 2.2 +/- 0.4 mg/dl), and the incidence of CIN was 11%.
  
  
  CONCLUSIONS
  Prophylactic hemodialysis for CRI patients undergoing cardiac catheterization does not prevent CIN.
authors.affiliation: First Department of Internal Medicine, Nippon Medical School, Tokyo, Japan.
authors.forename: Shuji
authors.initials: S
authors.lastname: Kawashima
authors.forename: Hitoshi
authors.initials: H
authors.lastname: Takano
authors.forename: Yasuhiko
authors.initials: Y
authors.lastname: Iino
authors.forename: Morimasa
authors.initials: M
authors.lastname: Takayama
authors.forename: Teruo
authors.initials: T
authors.lastname: Takano
mesh_terms: D000368:Aged; D006328:Cardiac Catheterization; D003287:Contrast Media / Q000009:adverse effects*; D003404:Creatinine / Q000097:blood; D005260:Female; D006801:Humans; D015994:Incidence; D007674:Kidney Diseases / Q000139:chemically induced / Q000517:prevention & control*; D008297:Male; D008875:Middle Aged; D006435:Renal Dialysis; D051436:Renal Insufficiency, Chronic / Q000628:therapy*; D012189:Retrospective Studies
chemical_list: D003287:Contrast Media; D003404:Creatinine