[Risk factors of post-renal biopsy bleeding].
OBJECTIVE
To evaluate the risk factors of post-renal biopsy bleeding (PBB).


METHODS
We retrospectively analyzed the clinical data of 1 262 patients who received ultrasound-guided biopsy of native kidney at our hospital from January 2005 to December 2006.


RESULTS
The overall incidence of PBB was 30.3% (383/1,262), among which the incidence of hematoma was 29.4% (371/1,262) (the percentages of less and more than 5cm were 73.9% and 26.1%, respectively) while that of gross hematuria was only 1.3% (17/1,262). The incidences of minor, intermediate, and major bleeding complications were 21.4% (270/1,262), 8.4% (106/1,262), and 0.6% (7/1,262), respectively. In seven patients with major bleeding complications, six had renal disease secondary to rheumatic disease (lupus nephritis, n = 5; scleroderma crisis, n = 1), while the other one had IgA nephropathy (Lee's classification V). The risk of PBB was relatively higher in women and younger patients.


CONCLUSIONS
Patients with chronic connective tissue diseases are vulnerable to severe PBB complications. A close monitoring of these patients is necessary.
Tao
Jian-Ling
JL
Department of Nephrology, PUMC Hospital, CAMS and PUMC, Beijing 100730, China.
Li
Hang
H
Li
Chao
C
Xu
Xin-Wei
XW
Li
Ji-Fang
JF
Yi
Na
N
Liu
Dong-Yan
DY
Qin
Yan
Y
Cai
Jian-Fang
JF
Liu
Bing-Yan
BY
Xu
Hong
H
Gao
Rui-Tong
RT
Ye
Wen-Ling
WL
Ye
Wei
W
Li
Xue-Mei
XM
Li
Xue-Wang
XW
D000293:Adolescent; D000328:Adult; D000368:Aged; D001706:Biopsy / Q000009:adverse effects*; D005260:Female; D006801:Humans; D007668:Kidney / Q000000981:diagnostic imaging / Q000473:pathology* / Q000601:surgery*; D008297:Male; D008875:Middle Aged; D019106:Postoperative Hemorrhage / Q000209:etiology*; D012189:Retrospective Studies; D012307:Risk Factors; D014463:Ultrasonography; D055815:Young Adult