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Suggested Flowchart Through Integrated C-Reactive Protein and White Blood Cell Count Analysis for Screening for Early
Hung-Chieh Lo1,2,3, Shih-Chang Hsu4,5
1Division of Trauma and Emergency Surgery, Department of Surgery, Wan Fang Hospital, Taipei Medical University, Taipei, Taiwan. carfishcat@yahoo.com.tw.
Insights
Early detection of complications after Roux-en-Y gastric bypass (RYGB) is vital. Postoperative day 1 C-reactive protein (CRP) and white blood cell (WBC) levels, alongside individualized thresholds, help identify at-risk patients, considering chronic inflammation.
Area of Science:
- Bariatric Surgery
- Surgical Complications
- Inflammatory Markers
Background:
- Early detection of anastomotic leakage after bariatric surgery is critical for patient outcomes.
- A standardized method for evaluating early postoperative complications following Roux-en-Y gastric bypass (RYGB) is currently lacking.
- Obesity-related chronic inflammation can influence inflammatory markers, complicating interpretation.
Purpose of the Study:
- To validate the utility of postoperative day 1 (POD1) C-reactive protein (CRP) levels and white blood cell (WBC) counts in identifying patients at risk for complications after RYGB.
- To assess the impact of obesity-related chronic inflammation on these inflammatory markers in the postoperative period.
Main Methods:
- Retrospective analysis of 261 patients (BMI 32.5-50 kg/m²) undergoing primary RYGB between 2017 and 2022.
- Sequential measurement of CRP and WBC counts 48 hours preoperatively and on POD1 morning.
- Comparison of marker levels between patients with and without complications, stratified by preoperative CRP.
Main Results:
- Patients with complications exhibited significantly higher WBC counts (>14,000/μl in 77.8% vs. 25.4%; p<0.001).
- Higher baseline CRP levels (≥0.3 mg/dl), longer operative time, and greater blood loss were associated with elevated postoperative WBC counts.
- A reasonable range of change in WBC count (∆WBC) showed a positive correlation with postoperative WBC count (r=0.6695), suggesting its potential as a complementary indicator.
Conclusions:
- Individualized CRP thresholds and integrated interpretation of WBC counts offer a more nuanced approach than static criteria for risk stratification after RYGB.
- Further research is necessary to confirm these findings and establish their generalizability across diverse patient populations.
Introduction:
Early leakage detection following bariatric procedures is crucial, but a standardized evaluation method is lacking. The aim was to validate the potential benefits of postoperative day 1 (POD1) C-reactive protein (CRP) levels and white blood cell (WBC) counts in distinguishing at-risk patients following Roux-en-Y gastric bypass (RYGB) while considering the impact of obesity-related chronic inflammation.
Methods:
Retrospective analysis of 261 consecutive patients aged 18-65 years with a body mass index (BMI) of 32.5-50 kg/m2 who underwent primary RYGB between 2017 and 2022. Sequential changes in CRP levels and WBC counts measured 48 h preoperatively and on POD1 morning were collected and compared between patients with/without complications and in patients without complications stratified by preoperative CRP levels.
Results:
Female patients and those with a higher BMI tended to have higher baseline CRP levels, which were positively related to postoperative CRP. Patients experiencing complications had higher WBC counts and a higher prevalence of WBC counts >14,000/μl (77.8% vs. 25.4%; p<0.001) than those without complications. Baseline CRP ≥ 0.3 mg/dl, a longer operative time, and blood loss >10 ml were significantly more common with WBC counts above 14,000/μl; a reasonable range of change in WBC count (∆WBC) derived from its positive correlation to postoperative WBC count (r=0.6695) may serve as a useful complementary indicator.
Conclusion:
An individualized CRP threshold setting and integrated interpretation of the WBC count can be more appropriate than using static criteria for differentiating at-risk patients after RYGB. Further studies are needed to validate these findings and determine their generalizability.
