Multidrug-Resistant Acinetobacter baumannii – The Modern Menace: A Retrospective Study in a Tertiary Hospital in Mangalore

Figures & data

Table 1 Frequency of Multidrug Resistant Isolates Obtained from Various Sources (N=100)

	Frequency	Percent
Sputum	13	13.0
ET suction	21	21.0
ET aspirate	14	14.0
BAL	8	8.0
Wound swab	3	3.0
Surgical site	1	1.0
Central line	3	3.0
Urine	9	9.0
Deep tissue	4	4.0
Bone tissue	2	2.0
Catheter tip	1	1.0
Pus	4	4.0
Foot blister	1	1.0
Tracheostomy suction tip	3	3.0
Abdominal drain swab	2	2.0
Swab	11	11.0
Total	100	100.0

Abbreviations: ET, endotracheal tube; BAL, bronchoalveolar lavage.

Table 2 Number of Antibiotics to Which Isolates from Various Sections of the Hospital Showed Resistance (N=100) (p=0.023)

			Section				Total
			ICU	Post-Op Ward	Ward	OT
Number of antibiotics to which isolate is resistant	1–5	Count	1	0	4	0	5
		%	1.4%	0.0%	19.0%	0.0%	5.0%
	6−7	Count	9	1	5	0	15
		%	12.5%	50.0%	23.8%	0.0%	15.0%
	8−9	Count	16	0	6	4	26
		%	22.2%	0.0%	28.6%	80.0%	26.0%
	10–11	Count	10	1	0	0	11
		%	13.9%	50.0%	0.0%	0.0%	11.0%
	12−13	Count	19	0	4	0	23
		%	26.4%	0.0%	19.0%	0.0%	23.0%
	14−15	Count	12	0	1	1	14
		%	16.7%	0.0%	4.8%	20.0%	14.0%
	≥16	Count	5	0	1	0	6
		%	6.9%	0.0%	4.8%	0.0%	6.0%
Total		Count	72	2	21	5	100
		%	100.0%	100.0%	100.0%	100.0%	100.0%

Abbreviations: ICU, intensive care unit; Post-op ward, post operative ward; OT, operation theatre.

Table 3 Clinical Outcome v/s the Number of Antibiotics the Isolate Showed Resistance to (N=100) (p=0.317)

			Outcome			Total
			Discharged	Death	Shifted
Number of antibiotics to which isolate is resistant	1–5	Count	4	1	0	5
		%	4.6%	8.3%	0.0%	5.0%
	6−7	Count	15	0	0	15
		%	17.2%	0.0%	0.0%	15.0%
	8−9	Count	23	3	0	26
		%	26.4%	25.0%	0.0%	26.0%
	10–11	Count	7	3	1	11
		%	8.0%	25.0%	100.0%	11.0%
	12−13	Count	21	2	0	23
		%	24.1%	16.7%	0.0%	23.0%
	14−15	Count	12	2	0	14
		%	13.8%	16.7%	0.0%	14.0%
	≥16	Count	5	1	0	6
		%	5.7%	8.3%	0.0%	6.0%
Total		Count	87	12	1	100
		%	100.0%	100.0%	100.0%	100.0%

Figure 1 (N = 100): Percentage of multidrug resistant isolates obtained based on the section of the hospital where the patient was when the sample was collected.

Figure 2 (N = 100): Percentage of isolates showing resistance to particular antibiotics.

Figure 3 (N = 100): Percentage of coinfecting pathogens.