Table 1.

Patient characteristics

		n (177)	(%)
Gender
	Male	100	56.5
	Female	77	43.5
Age range
	<20	7	4.0
	20 – 30	5	2.8
	30 – 40	9	5.1
	40 – 50	16	9.0
	50 – 60	31	17.5
	60 – 70	33	18.6
	70 – 80	24	13.6
	80 – 90	35	19.8
	>90	17	9.6
Comorbidities
	None	14	7.9
	Systemic arterial hypertension	43	24.3
	Diabetes mellitus	37	20.9
	Cerebrovascular accident	22	12.4
	Chronic obstructive pulmonary disease	20	11.3
	Chronic renal insufficiency	19	10.7
	Liver cirrhosis	19	10.7
	Hypothyroidism	16	9.0
	Dementia (Alzheimer/Vascular)	14	7.9
Immunocompromised
	Yes	62	35.0
	No	115	65.0
Institutionalized
	Yes	5	2.8
	No	172	97.2
Hospital stay less than 30 days
	Yes	54	30.5
	No	123	69.5
Previous antibiotic treatment
	Yes	110	62.1
	No	67	37.9
Clinical signs of SIRS
	Hypo or hyperthermia	40	22.6
	Tachycardia	102	57.6
	Tachypnea	137	77.4
Devices
	Only indwelling urinary catheter	15	8.5
	Only central venous catheter	26	14.7
	Central venous catheter and indwelling urinary catheter	53	29.9
Surgery within past 7 days
	Abdominal	13	7.3
	Neurosurgery	14	7.9
	Orthopedic	2	1.1
	Thoracic	3	1.7
	Thoracic-abdominal	1	0.6
	Liver transplant	5	2.8
Organ dysfunction
	None	39	22
	One	65	36.7
	Two	35	19.8
	Three	19	10.7
	Four	12	6.8
	≥5	7	4.0
Change in therapy regimen upon culture result
	Yes	29	16.4
	Respiratory culture	12	6.8
	Urine culture	8	4.5
	Blood culture	5	2.8
	Other	4	2.2

SIRS – Systemic Inflammatory Response Syndrome