Periappendiceal fluid collection on preoperative computed tomography can be an indication for interval appendectomy: a retrospective study

Table 1 Patient characteristics and results

	PAFC ( +) (n = 170)			PAFC ( −) (n = 606)			p Value
	EA(n = 116)	IA(n = 54)	p Value	EA(n = 509)	IA(n = 97)	p Value	p Value
Age	47.6 ± 18.6	50.1 ± 17.2	0.42	37.2 ± 16.0	40.2 ± 15.4	0.08
Sex (M: F)	73:43	26:28	0.07	269:240	42:55	0.08
BMI	22.5 ± 3.6	22.7 ± 2.9	0.79	22.1 ± 3.6	22.2 ± 4.7	0.9
Comorbidities
DM (%)	12	7.1	0.63	3	4.8	0.67
HT (%)	20	21.4	0.92	4.2	19	0.027**
Preoperative blood test
WBC (*10³)	12.7 ± 4.4	8.8 ± 4.4	0.002**	12.5 ± 4.6	7.5 ± 4.2	< 0.001**
CRP	8.7 ± 8.0	8.7 ± 9.4	0.98	3.0 ± 4.5	2.1 ± 3.3	0.2
T-Bil	1.2 ± 0.7	0.7 ± 0.3	0.003**	0.9 ± 0.5	0.8 ± 0.3	0.13
Fecalith on CT (%)	38.2	40	0.86	46.2	24.7	< 0.001**
Laparoscopy (%)	66.7	94.2	< 0.001**	84.3	94.8	0.01**
Stump inversion (%)	23.8	8.3	0.02**	15.7	3.4	0.003**
Drain insertion (%)	50	25	0.005**	4.7	1.1	0.12
Time (min)	95.4 ± 46.2	81.8 ± 45.5	0.07	66.1 ± 29.9	65.5 ± 35.1	0.87
Blood (ml)	46.4 ± 103.5	19.8 ± 76.1	0.06	7.2 ± 14	5.5 ± 4.7	0.03**
Complication (CD ≧ 2) (%)	40.5	24	0.037**	5.3	6.2	0.73
Postoperative hospital stays (days)	9.4 ± 5.8	6.2 ± 4.8	< 0.001**	5.0 ± 2.9	3.7 ± 2.7	< 0.001**
Neoplasm (%)	7.6			1.5			< 0.001**
Malignancy + (%)	2.4			0.17			0.002**

Data are shown as mean ± standard deviation, number of patients, or number (percentage)
**p < 0.05
PAFC ( +) positive for periappendiceal fluid collection, PAFC ( −) negative for periappendiceal fluid collection, EA emergency appendectomy, IA interval appendectomy, M male, F female, BMI body mass index, DM diabetes mellitus, HT hypertension, WBC white blood cells, CRP C-reactive protein, T-Bil total bilirubin, CT computed tomography, Laparoscopy laparoscopic surgery, CD Clavien–Dindo

ISSN: 1749-7922