Table 1.

Primary screening: abnormal findings and final diagnosis.

Participant	HHE	Medical history and physical examination	ECG	Final diagnosis
1	N	↑BP	N	↑BP
2	N	↑BP	N	↑BP
3	N	↑BP	N	↑BP
4	N	N	↑QT	IVR RBBB
5	N	D CP	↑QT	N
6	N	N	TWI V1–V3	N
7	N	FH	Partial RBBB	Partial RBBB
8	N	D Irreg.HB	Bradycardia	Bradycardia
9	TR and RVD	D	N	TR
10	AR	N	N	AR
11	LVD	N	N	N
12	SD	CP	N	SD
13	N	D CP	N	N
14	N	D CP Irreg.HB	N	N
15	N	D CP	N	N
16	N	D CP	N	N
17	N	D CP	N	N
18	N	D	N	N
19	N	D	N	N
20	N	D	N	N
21	N	D	N	N
22	N	D CP	N	N
23	N	CP	N	N
24	N	D	N	N
25	N	D	N	N
26	N	CP Irreg.HB	N	N
27	N	D Irreg.HB	N	N
28	N	FH D	N	N
29	N	CP	N	N
30	N	CP Irreg.HB	N	N
31	N	D	N	N
32	N	CP	N	N
33	N	CP	N	N
34	INAD V	D CP	N	N
35	N	D	N	N
36	N	D CP Irreg.HB	N	N

↑BP, blood pressure exceeding the 90th percentile; MR, mitral regurgitation; AR, aortic regurgitation; RV, right ventricle; LV, left ventricle; RBBB, right bundle branch block; HHE, hand-held echocardiogram; RVD, right ventricular dilatation; LVD, left ventricular dilatation; TWI V1–V3, T-wave inversion in leads V1 to V3; FH, family history of cardiac problem at less than 50 years; D, dizziness during or after exercise; Irreg.HB, irregular heartbeat/skipped beats/palpitations; CP, chest pain during exercise; TR, tricuspid regurgitation; N, normal; INAD V, inadequate views; SD, septal dyskinesis; IVD, idioventricular rhythm.