Catheter-related infection in gastrointestinal fistula patients

Table 1 Organisms present in 88 catheters

	No. of bacteria	Percent (%)
Gram-negative bacteria		56.8
Enterobacteriaceae
Enterobacter cloacae	6	6.3
Escherichia coli	5	5.3
Non- identified Gram-negative bacteria	4	4.2
Klebsiella pneumoniae	1	1.1
Non-ferment gram negative rods
Pseudomonas	20	21.1
Acinetobacter baumannii	7	7.3
Bacterium aeruginosa	5	5.3
Corynebacterium diphtheriae	4	4.2
Acinetobacter lwoffii	2	2.1
Gram-positive bacteria		36.8
Staphylococcus epidermidis	9	9.4
Staphylococcus haemolyticus	7	7.3
Tetrads	4	4.2
Staphylococcus aureus	4	4.2
Enterococcus sp.	4	4.2
Streptococcus viridans	2	2.1
Staphylococcus hominis	2	2.1
Staphylococcus warneri	2	2.1
Staphylococcus simulans	1	1.1
Fungus		6.4
Candida	5	5.3
Saccharomyces	1	1.1
Total	95	100

Table 2 Drug sensitivity test of 48 Gram-negative bacteria (%S)

Species of bacteria	n	AMK	AMP	CFP	CSL	PIP	CAZ	CRO	CXA	CIP	IPM
Pseudomonas	20	75	12.5	0	25	25	70	45	0	70.5	75
Acinetobacter baumannii	7	100	16.7	0	100	0	60	60	0	85.7	100
Enterobacter cloacae	6	75	0	100	75	50	75	80	33.3	50	100
Escherichia coli	5	0	0	0	100	0	0	0	0	0	100
Bacterium aeruginosa	5	40	0	20	80	20	60	20	0	60	80
Corynebacterium diphtheriae	4	75	0	50	100	0	75	50	25	75	100
Klebsiella pneumoniae	1	0	0	0	0	100	0	0	100	100	100
Summary	48	80	7.5	30	69.2	21.1	70.3	55.6	8.9	75.6	90

%S indicates drug sensitivity. AMK: Amikacin; AMP: Ampicillin; CFP: Cefoperazone; CSL: Cefoperazone/Sulbactam; PIP: Piperacillin; CAZ: Ceftazidime; CRO: Ceftriaxone; CXA: Cefuroxime axetil; CIP: Ciprofloxacin; IPM: Imipenem.

Table 3 Drug sensitivity test of 29 Gram-positive bacteria (%S)

Species of bacteria	n	AMK	AMP	SAM	CEP	CIP	ERY	NOR	PEN	PIP	VAN
Staphylococcus epidermidis	9	0	0	0	0	66.7	0	66.7	0	0	100
S. haemolyticus	7	50	0	20	25	50	16.7	60	0	0	100
S. aureus	4	100	0	0	0	25	33.3	75	0	0	100
Enterococcus sp.	4	0	0	0	0	100	0	0	0	0	100
S. hominis	2	0	0	0	0	50	0	0	0	60	100
S. warneri	2	0	0	100	0	100	100	0	0	100	100
S. simulans	1	0	0	100	100	0	0	0	0	0	100
Summary	29	50	0	18.2	16.7	56.2	21.4	66.7	11.8	10.2	100

%S indicates drug sensitivity. AMK: Amikacin; AMP: Ampicillin; SAM: Ampicillin/Sulbactam; CEP: cephalothin; CIP: Ciprofloxacin; ERY: Erythromycin; NOR: Norfloxacin; PEN: Penicillin; PIP: Piperacillin; VAN: Vancomycin.