Early initiation of continuous renal replacement therapy improves patient survival in severe progressive septic acute kidney injury.
OBJECTIVE
The definition of "early" in terms of continuous renal replacement therapy (CRRT) initiation has not been uniformly used. Therefore, we tried to elucidate whether the timing of CRRT application, based on the interval between the start time of vasopressors infusion and CRRT initiation, was an independent predictor of mortality in the patients with septic acute kidney injury (AKI).


METHODS
Progressive septic AKI patients, in whom the infusion doses of vasopressors were increased compared with the initial dose during the first 6 hours of vasopressor treatment and CRRT was performed, between 2009 and 2011, were collected and divided into 2 groups based on the median interval between the 2 points.


RESULTS
A total of 210 patients were included. The mean age was 62.4 years, and 126 patients (60.0%) were male. The most common comorbid disease was malignancy (53.8%), followed by hypertension (35.7%) and diabetes mellitus (29.0%). The median interval between the start time of vasopressor infusion and CRRT commencement was 2.0 days. During the study period, 156 patients (74.3%) died within 28 days of CRRT application. The interval between 2 points was significantly shorter in the survivor compared with the death group (P < .001). Moreover, 28-day overall mortality rates in the early CRRT group were significantly lower than those in the late CRRT group (P = .034). Furthermore, early CRRT treatment was independently associated with a lower mortality rate even after adjustment for age, sex, causative organisms, and infection sites (P = .032).


CONCLUSIONS
This retrospective cohort study suggests that early initiation of CRRT may be of benefit. Given the complex nature of this intervention, the ongoing controversies regarding early vs late initiation of therapy in acute and chronic situation, there is an urgent need to develop well-designed clinical trials to answer the question definitely.
Department of Internal Medicine, College of Medicine, Brain Korea 21, Severance Biomedical Science Institute, Yonsei University, Seoul 120-752, Korea.
Hyung Jung
HJ
Oh
Dong Ho
DH
Shin
Mi Jung
MJ
Lee
Hyang Mo
HM
Koo
Fa Mee
FM
Doh
Hyoung Rae
HR
Kim
Jae Hyun
JH
Han
Jung Tak
JT
Park
Seung Hyeok
SH
Han
Tae-Hyun
TH
Yoo
Kyu Hun
KH
Choi
Shin-Wook
SW
Kang
D058186:Acute Kidney Injury / Q000401:mortality / Q000628:therapy*; D000367:Age Factors; D000368:Aged; D015897:Comorbidity; D005260:Female; D006305:Health Status Indicators; D006801:Humans; D007362:Intensive Care Units; D053208:Kaplan-Meier Estimate; D008297:Male; D008875:Middle Aged; D017582:Renal Replacement Therapy / Q000379:methods*; D012189:Retrospective Studies; D018805:Sepsis / Q000401:mortality / Q000628:therapy*; D012737:Sex Factors; D018746:Systemic Inflammatory Response Syndrome / Q000401:mortality / Q000628:therapy; D013997:Time Factors; D014662:Vasoconstrictor Agents / Q000627:therapeutic use
D014662:Vasoconstrictor Agents