Table 3. Number of Tests Performed During First Admission in the 207 (35%) Patients Where the Etiological Diagnosis was Made During Admission.

Test	Number (%)	Abnormal test (%)	Definite diagnosis. Diagnostic yield of test during admission (%)
Laboratory and blood results	207 (100)	NA	NA
ECG	207 (100)	83 (40)	17 (8)
Telemetry	144 (70)	44 (31)	16 (11)
Echocardiogram	72 (35)	33 (46)	7 (10)
Stress ECG	7 (3)	1 (14)	1 (14)
Orthostatic hypotension test	32 (16)	20 (63)	15 (47)
Electrophysiological study	5 (2)	1 (20)	1 (20)
Carotid sinus massage	10 (5)	2 (20)	2 (20)
CT cerebrum	29 (14)	9 (31)	3 (10)*

*These 3 patients received another definitive diagnosis than syncope and were ultimately classified wrongly by the physician.