Exercise-induced torsades de pointes as an unusual presentation of cardiac sarcoidosis: A case report and review of literature

Table 1 Laboratory work-up on presentation

Test	Results	Reference range
Hematology
White blood cells	6.6	4.2-11.4 × 103/mm3
Hemoglobin	12.7	11.8-15.6 g/dL
Hematocrit	40.5	35.3%-46.1%
Platelets	275	174-402 × 103/mm3
Biochemistry
Sodium	140	132-145 mmol/L
Potassium	4.3	3.5-5.1 mmol/L
Magnesium	0.94	0.6-1.1 mmol/L
Calcium	2.27	2.1-2.55 mmol/L
Urea	25	15-50 mg/dL
Creatinine	0.68	0.2-1.2 mg/dL
HbA1c	6.7	4.0%-6.0%
Angiotensin converting enzyme	35	20-70 U/L
Cardiac markers
Creatinine kinase MB	2.8	0.0-5.0 ng/mL
Troponin I (HS)	3	0-15 pg/mL
Cytometry markers
CD4/CD8 ratio	2.78	1.20-2.40
CD3-16+56+ lymphocytes	8.3	5%-15%
CD19 (pan B) lymphocytes	13.40	5%-20%
Thyroid panel
TSH	1.45	0.35-4.95 mU/L
Free T4	1.03	0.70-1.48 ng/dL

HbA1c: Glycated hemoglobin; HS: High sensitivity; MB: Myocardial band; MDRD: Modification of diet in renal disease; TSH: Thyroid stimulating hormone.