#ColorectalCancer #AKI #Surgery #OperativeRisk
#RiskFactors
#PostoperativeCare
Postoperative acute kidney injury (AKI) is a
common complication, particularly following
major surgeries such as those
performed in digestive oncology. It is associated with
increased mortality,
prolonged hospital stays, higher
readmission rates, and
delayed discharge. In
the context of
colorectal cancer—one of the most prevalent and deadliest
cancers worldwide—AKI remains an underestimated issue.
Although often transient, postoperative AKI can
progress to
chronic kidney disease, with long-term consequences on both
quality
of life and overall prognosis. The reported incidence of AKI after colorectal
surgery varies widely in the literature, ranging from
1% to over 20%, depending
on the definitions used and the populations studied. This variability reflects
a
lack of consensus on specific risk factors, making it difficult to implement
effective prevention strategies.
In this context,
a meta-analysis was conducted
to
identify and assess the most frequently associated risk factors for
postoperative AKI in patients undergoing surgery for colorectal cancer. The
goal is to
improve preoperative detection of at-risk patients, optimize
perioperative management, and
reduce postoperative morbidity related to this
renal complication.
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Which patients are most at risk for aki after
surgery?
Twenty-three studies involving a total of 167,904 patients who underwent
surgery for colorectal cancer were included. To be eligible, studies had to
clearly define AKI using KDIGO or AKIN criteria and provide usable data in the
form of odds ratios (OR). The methodological quality of the studies was
assessed using the Newcastle–Ottawa Scale to ensure reliable results.
This research highlights several
significant
KI risk factors,postoperative A grouped into three major categories. From a
demographic perspective,
male sex, advanced age, and a
body mass index (BMI) ≥
25 kg/m² were associated with increased risk. Medically, a history of
hypertension,
diabetes,
chronic kidney disease, or preoperative
hypoalbuminemia
also raised the risk. Regarding surgical characteristics,
emergency surgery,
open
surgical approach,
prolonged operative time, an
ASA score ≥ 3, and
intraoperative blood transfusion were all significantly linked to a higher
incidence of AKI.
In contrast,
preoperative anemia and
elevated
baseline creatinine levels did
not appear to be significantly associated with
postoperative AKI. Similarly,
open surgery and blood transfusion were shown to
clearly increase the risk of AKI after colorectal surgery. These findings
demonstrate that AKI risk is
multifactorial, involving both modifiable and
non-modifiable factors that must be considered to improve the management of
colorectal cancer surgery patients.
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Preventing AKI: mission possible?
Acute kidney injury after colorectal surgery is a common and serious
complication that can worsen a patient’s condition and slow recovery. The key
challenge is to quickly identify patients at risk, in order to adjust care and
prevent AKI—especially in individuals already weakened by cancer and
comorbidities. This study was initiated to identify and quantify the main risk
factors for AKI following colorectal cancer surgery, with the aim of guiding
clinical practices toward more targeted and preventive management.
The results confirm that AKI risk is
multifactorial, influenced by the
patient's profile,
nutritional and renal
status, and
procedure-related factors. These findings provide
several
intervention points to help reduce the risk.
Prospective, multicenter, and
better-standardized studies are needed to refine these conclusions. Ultimately,
improved risk stratification would allow for the
integration of renal
evaluation into preoperative pathways, enabling
targeted AKI prevention—an
essential step toward enhancing the quality of care in
digestive oncology.
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