Preoperative neutrophil-to-lymphocyte ratio may contribute to the prediction of postoperative infectious complications in patients with acute appendicitis: a retrospective study

Table 1 Characteristics of 181 patients with acute appendicitis

Variable	n = 181
Sex, male/female	111/70
Age, years	44 (15−92)
BMI, kg/m²	21.8 (15.6−33.6)
ASA-PS classification, IE/IIE/IIIE	72/103/6
pBT, ℃	37.2 (35.3−39.5)
pWBC, × 10⁹/L	13.5 (4.1−24.8)
pPLT, × 10⁹/L	231 (106−480)
pNTC, × 10⁹/L	11.2 (2.8−21.7)
pLPC, × 10⁹/L	1.2 (0.3−5.2)
pNLR	10.2 (1.8−38.2)
pPLR	202.0 (51.2−941.9)
pCRP, mg/L	47.6 (0.1−334.7)
Maximum diameter of the appendix, mm	9.8 (5.7−20.8)
Fecalith (+ /−)	95/86
Periappendiceal effusion (+ /−)	124/57
Periappendiceal abscess (+ /−)	13/168
Ascites (+ /−)	35/146
Time to operation, < 6/6−12/13−24/25−48 h	108/59/6/8
Type of appendectomy, open/laparoscopic	31/150
Operative time, minutes	50 (23−160)
Estimated blood loss, mL	1 (1−300)
Type of acute appendicitis, uncomplicated/complicated	93/88
Postoperative complications, C−D grade ≥ II (+ /−)	28 /153

Data are presented as n or median (range). BMI, body mass index; ASA-PS, American Society of Anesthesiologists physical status; pBT, preoperative body temperature; pWBC, preoperative white blood cell count; pPLT, preoperative platelet count; pNTC, preoperative neutrophil count; pLPC, preoperative lymphocyte count; pNLR, preoperative neutrophil-to-lymphocyte ratio; pPLR, preoperative platelet-to-lymphocyte ratio; pCRP, preoperative C-reactive protein level, C-D, Clavien-Dindo classification

ISSN: 1471-2482