Table 1.

Demographic, clinical, and laboratory characteristics of five dengue fever patients with thrombotic events, Brazil^*

Patient/age (years)/sex	Platelets (× 109/L)†	Hematocrit, %‡	Antibodies against phospholipid§	Imaging	Manifestations	Thrombotic event	Illness day of thrombosis diagnosis
1/89/F	113	33	IgG 4.5, IgM 17.6	Doppler US	Leg pain and edema	DVT	2
2/41/F	112	32.9	IgG 7.9, IgM 1.9	Doppler US	Leg pain and edema	DVT	3
3/89/F	52	45	IgG 32.8, IgM 14.2	CTA	Dyspnea	PTE	1
4/51/F	45	41	IgG 0.6, IgM 12.0	CTA	Dyspnea	PTE	2
5/61/M	37	42	IgG 6.1, IgM 11.3	C-MRI	SIRS	MVT	5

^*US = ultrasound; DVT = deep vein thrombosis; CTA = computed tomography angiography; PTE = pulmonary thromboembolism; C-MRI = cholangio-magnetic resonance imaging; SIRS = systemic inflammatory response syndrome; MVT = mesenteric vein thrombosis.

^†Reference value = 140–400 × 10⁹ /L (sample obtained on hospital day 1).

^‡Reference values: males = 41–53%; females = 36–46% (sample obtained on hospital day 1).

^§Reference value < 10 IgMPL/IgGPL (IgM phospholipid units, 1 IgMPL unit = 1 μg of IgM); IgGPL (IgG phospholipid units, 1 GPL unit = 1 μg of IgG).