Spectrum of cardiac manifestations and its relationship to outcomes in patients admitted with scrub typhus infection

Table 2 Comparison of cardiac parameters in patients with and without myocarditis

Parameter	With myocarditis (n = 10)	No myocarditis (n = 71)	P value
Electrocardiography finding, n (%)
Sinus tachycardia	3 (30)	35 (49.3)	0.25
ST-T changes	2 (20)	8 (11.3)	0.43
T wave inversion	3 (30)	5 (7)	0.0231
QRS morphology changes	5 (50)	6 (8.5)	< 0.0011
Supraventricular tachycardia	0	1 (1.4)	0.70
Atrial fibrillation	0	3 (4.2)	0.51
Wide QRS tachycardia	0	1 (1.4)	0.71
Sinus bradyarrhythmia	1 (10)	4 (5.6)	0.59
Cardiac biomarker, mean (SD)
CK-MB (ng/mL)	14.1 (18.1)	5.9 (7.1)	0.0091
Troponin T (pg/mL)	235.9 (475.2)	61.6 (136.5)	0.0141
Echocardiography finding, mean (SD)
LVEF	41.6 (8.8)	59.8 (13.3)	< 0.0011
Cardiac index	2.7 (1.1)	2.6 (0.9)	0.79
Systemic vascular resistance	2417 (1280)	2354 (891)	0.85
E/A	0.9 (0.2)	1.2 (0.4)	0.06
E/e’	9.9 (4.0)	9.8 (3.4)	0.94
CVP, cm	13.5 (5.3)	10.9±5.2	0.15

¹Significant value. SD: Standard deviation; CK-MB: Creatinine kinase muscle brain iso-enzyme; LVEF: Left ventricular ejection fraction; E/A: The ratio between heights of early and late diastolic flow velocity peaks; E/e’: The ratio between early mitral inflow velocity and mitral annular early diastolic velocity; CVP: Central venous pressure.