Table 1.

Baseline demographic and clinical characteristics of the study population.

	Group A (n = 87, 46%)		Group B (n = 43, 22,8%)		Group C (n = 59,31,2%)
Mean Age ± SD (years)	68.37 ± 11.55		67.30 ± 14.94		62.42 ± 10.46
Sex	n	%	n	%	n	%
Female	53	60.9	20	46.5	29	49.1
Male	34	39.1	23	53.5	30	50.9
Symptoms	n	%	n	%
Cough	27	31.0	14	32.6
Chest pain	42	48.3	17	39.5
Dyspnea	77	88.5	35	81.4
Hemoptysis	8	9.2	4	9.3
Syncope	18	20.7	5	11.6
Symptoms of DVT	7	8.0	1	2.3
Asymptomatic	3	3.4	1	2.3
Clinical signs	Mean ± SD		Mean ± SD
Heart rate	104.74 ± 23.56		103.88 ± 23.02
Respiratory rate	27.53 ± 6.26		25.65 ± 7.77
Fever	36.75 ± 0.79		36.92 ± 0.78
Systolic BP	113.39 ± 35.57		122.86 ± 28.99
Diastolic BP	72.44 ± 19.88		75.63 ± 17.85
Chest X-ray signs	n	%	n	%
Pleural effusion	28	32.2	21	48.8
Atalectasis	26	29.9	11	25.6
Diaphragm elevation	26	29,8	11	25.6
Hampton's sign	4	4.6	0
Westermach sign	1	1.1	0
Pulmonary artery dilatation	10	11.5	2	4.7
ECG signs	n	%	n	%
S1Q3T3	16	18.4	1	2.3
Sinusal tachycardia	42	48.3	18	41.9
Atrial fibrillation	14	16.1	8	18.6
T negativity	9	10.3	3	7.0
RBBB	2	2.3	0
Risk factors for VTE	n	%	n	%
Previous DVT	11	12.64	2	4.65
Previous PE	4	4.59	1	2.32
Varicose veins	8	9.19	2	4.65
Chronic venous insuffficiency	7	8.04	1	2.32
Previous stroke	12	13.79	4	9.30
COPD	18	20.68	13	30.23
CHF	27	31.03	20	46.51
Cancer	9	10.34	2	4.65
Recent surgery	22	25.28	3	6.97
Recent trauma	8	9.19	1	2.32
Immobilization	57	65.51	21	48.83
Pregnancy	2	2.29	1	2.32
Post-partum period	0		1	2.32
Obesity	10	11.49	0
Long bone fracture	5	5.74	0