Eurasian Journal of Chemical, Medicinal and Petroleum Research

Abstract Introduction: Femoral implant surgery is frequently complicated by early inflammatory reactions that may be difficult to distinguish from normal postoperative responses. Because C-reactive protein reflects systemic inflammatory activity, preoperative measurement may help identify patients at greater risk of acute pathologic inflammation after surgery. The aim of this study was to evaluate the diagnostic value of preoperative CRP in predicting acute inflammation following femoral implant placement.

Material and methods: This descriptive cross-sectional study was conducted at Shahid Madani Hospital in Tabriz, Iran. Using Cochran’s formula, the sample size was estimated at 73 patients, who were enrolled through convenience sampling. Data were extracted from medical records on demographic characteristics, comorbidities, preoperative CRP and other laboratory findings, operative details, and early postoperative inflammatory outcomes to assess the diagnostic value of preoperative CRP.

Results: Among 73 patients, acute postoperative inflammation occurred in 21.9%. Affected patients had higher preoperative CRP (24.18 vs 12.32 mg/L, P < 0.001), ESR (34.50 vs 25.98 mm/h, P = 0.009), and WBC (9.96 vs 8.40 x10³/muL, P = 0.015), but lower hemoglobin (11.28 vs 12.34 g/dL, P = 0.021) and albumin (3.29 vs 3.70 g/dL, P = 0.003). CRP showed good diagnostic performance (AUC = 0.812, sensitivity 78.9%, specificity 73.6%, NPV 95.1%).

Conclusion: Preoperative CRP appears to be a clinically useful marker for identifying patients at risk of acute inflammation after femoral implant placement. Its strong discriminatory capacity and high negative predictive value suggest particular value in perioperative risk stratification, especially when interpreted alongside comorbidity burden, nutritional status, and operative complexity.

Abstract Introduction: Chronic post-mastectomy pain is a common and disabling survivorship problem, and growing evidence suggests that early postoperative inflammation may contribute to its development. C-reactive protein is an accessible biomarker of surgical inflammatory response. This study aimed to evaluate whether first-postoperative-day C-reactive protein levels are associated with subsequent chronic post-mastectomy pain.

Material and methods: This descriptive cross-sectional study was conducted at Tabriz University of Medical Sciences in 2022 on 50 women undergoing mastectomy, selected by convenience sampling. Sample size was estimated using the Cochran single-group formula. The main variables included first-postoperative-day serum C-reactive protein level and chronic post-mastectomy pain at follow-up, alongside demographic, clinical, surgical, oncologic, and postoperative variables potentially related to pain development.

Results: Among 50 women undergoing mastectomy, 19 (38.0%) developed chronic post-mastectomy pain. Mean first-postoperative-day CRP was significantly higher in patients with chronic pain than in those without pain (36.2 ± 11.6 vs 23.9 ± 8.7 mg/L, P < 0.001). Axillary lymph node dissection (84.2% vs 54.8%, P = 0.034), longer operative time (127.9 ± 25.1 vs 109.8 ± 21.6 minutes, P = 0.011), and early postoperative complications (36.8% vs 12.9%, P = 0.046) were also associated with pain development.

Conclusion: Elevated first-postoperative-day CRP was independently associated with chronic post-mastectomy pain, suggesting that an intensified early postoperative inflammatory response may play an important role in pain chronification after breast cancer surgery.

Abstract Introduction: Early postoperative inflammation after lumpectomy may be influenced by tumor biology, particularly estrogen receptor expression, which modulates immune signaling and cytokine activity. However, its relationship with surgical inflammation remains unclear. This study aimed to evaluate the association between estrogen receptor expression and inflammatory responses during the first 24-hour postoperative period.

Material and methods: This descriptive cross-sectional study was conducted at Tabriz University of Medical Sciences in 2026 on 45 women undergoing lumpectomy, selected by convenience sampling. Estrogen receptor expression was assessed immunohistochemically in surgical specimens, while early postoperative inflammation was evaluated by 24-hour serum C-reactive protein measurement. Additional variables included age, body mass index, menopausal status, tumor characteristics, operative duration, white blood cell count, temperature, drainage volume, and pain score.

Results: Our study demonstrated that ER-negative patients exhibited a more pronounced inflammatory response post-lumpectomy. The ER-negative group showed significantly higher 24-hour CRP (16.83 vs. 12.46 mg/L; p=0.001) and WBC counts (10.08 vs. 8.71 × 10³/µL; p=0.017) than ER-positive patients. Regression analysis confirmed an independent inverse association between ER expression and postoperative CRP levels (adjusted β=3.92; p=0.003), underscoring a distinct link between molecular phenotype and acute systemic inflammatory intensity.

Conclusion: ER-negative status in breast cancer patients significantly exacerbates the systemic inflammatory response during the first 24 hours after lumpectomy. This association suggests that ER expression serves as a critical molecular biomarker for early postoperative recovery. Consequently, patients with ER-negative tumors may require heightened clinical surveillance and targeted anti-inflammatory interventions to manage the observed surge in acute inflammatory markers following surgical resection.