Clinical and electrophysiological differences in patients with high- and low-risk intermittent ventricular preexcitation
| . | High-risk IVP (46) . | Low-risk IVP (21) . | P value . |
|---|---|---|---|
| Age (years) | 14 [13–16] | 15 [12–16] | 0.914 |
| Male | 29 (63) | 14 (67) | 0.992 |
| Symptoms | 16 (35) | 7 (33) | 0.873 |
| AP location: | 0.65 | ||
| LPS | 7 (15) | 4 (19) | |
| LL | 10 (22) | 4 (19) | |
| PH/RS | 18 (39) | 7 (33) | |
| RL | 10 (22) | 6 (29) | |
| RL + LL | 1 (2) | 0 (0) | 0.956 |
| Only left APs | 17 (37) | 8 (38) | |
| AVN ERP | |||
| Baseline | 250 [230–280] | 260 [230–290] | 0.662 |
| ISO or ET | 190 [180–210] | 180 [160–200] | 0.190 |
| AP ERP | |||
| Baseline | 300 [280–320] | 310 [270–440] | 0.227 |
| ISO or ET | 230 [220–240] | 280 [270–280] | <0.001 |
| SPERRI or 1:1 AP conduction | |||
| Baseline | 305 [290–360] | 380 [340–420] | 0.09 |
| ISO or ET | 230 [220–240] | 340 [270–410] | <0.001 |
| AF inducibility | |||
| Baseline | 7 (15) | 3 (15) | 0.726 |
| ISO or ET | 5 (12) | 2 (11) | 0.702 |
| AVRT inducibility | |||
| Baseline | 11 (24) | 5 (24) | 0.765 |
| ISO or ET | 16 (37) | 7 (39) | 0.868 |
| . | High-risk IVP (46) . | Low-risk IVP (21) . | P value . |
|---|---|---|---|
| Age (years) | 14 [13–16] | 15 [12–16] | 0.914 |
| Male | 29 (63) | 14 (67) | 0.992 |
| Symptoms | 16 (35) | 7 (33) | 0.873 |
| AP location: | 0.65 | ||
| LPS | 7 (15) | 4 (19) | |
| LL | 10 (22) | 4 (19) | |
| PH/RS | 18 (39) | 7 (33) | |
| RL | 10 (22) | 6 (29) | |
| RL + LL | 1 (2) | 0 (0) | 0.956 |
| Only left APs | 17 (37) | 8 (38) | |
| AVN ERP | |||
| Baseline | 250 [230–280] | 260 [230–290] | 0.662 |
| ISO or ET | 190 [180–210] | 180 [160–200] | 0.190 |
| AP ERP | |||
| Baseline | 300 [280–320] | 310 [270–440] | 0.227 |
| ISO or ET | 230 [220–240] | 280 [270–280] | <0.001 |
| SPERRI or 1:1 AP conduction | |||
| Baseline | 305 [290–360] | 380 [340–420] | 0.09 |
| ISO or ET | 230 [220–240] | 340 [270–410] | <0.001 |
| AF inducibility | |||
| Baseline | 7 (15) | 3 (15) | 0.726 |
| ISO or ET | 5 (12) | 2 (11) | 0.702 |
| AVRT inducibility | |||
| Baseline | 11 (24) | 5 (24) | 0.765 |
| ISO or ET | 16 (37) | 7 (39) | 0.868 |
Legend: AF, Atrial fibrillation; AP, Accessory pathway; AVRT, Atrioventricular re-entrant tachycardia; ERP, Effective refractory period; ET, exercise testing; ISO, Isoproterenol infusion; LL, Left lateral; LPS, Left posteroseptal; PH, Para-Hissian; RL, Right lateral; RS, Right anterior septal.
Values are expressed as number (%) or median [IQR].
Clinical and electrophysiological differences in patients with high- and low-risk intermittent ventricular preexcitation
| . | High-risk IVP (46) . | Low-risk IVP (21) . | P value . |
|---|---|---|---|
| Age (years) | 14 [13–16] | 15 [12–16] | 0.914 |
| Male | 29 (63) | 14 (67) | 0.992 |
| Symptoms | 16 (35) | 7 (33) | 0.873 |
| AP location: | 0.65 | ||
| LPS | 7 (15) | 4 (19) | |
| LL | 10 (22) | 4 (19) | |
| PH/RS | 18 (39) | 7 (33) | |
| RL | 10 (22) | 6 (29) | |
| RL + LL | 1 (2) | 0 (0) | 0.956 |
| Only left APs | 17 (37) | 8 (38) | |
| AVN ERP | |||
| Baseline | 250 [230–280] | 260 [230–290] | 0.662 |
| ISO or ET | 190 [180–210] | 180 [160–200] | 0.190 |
| AP ERP | |||
| Baseline | 300 [280–320] | 310 [270–440] | 0.227 |
| ISO or ET | 230 [220–240] | 280 [270–280] | <0.001 |
| SPERRI or 1:1 AP conduction | |||
| Baseline | 305 [290–360] | 380 [340–420] | 0.09 |
| ISO or ET | 230 [220–240] | 340 [270–410] | <0.001 |
| AF inducibility | |||
| Baseline | 7 (15) | 3 (15) | 0.726 |
| ISO or ET | 5 (12) | 2 (11) | 0.702 |
| AVRT inducibility | |||
| Baseline | 11 (24) | 5 (24) | 0.765 |
| ISO or ET | 16 (37) | 7 (39) | 0.868 |
| . | High-risk IVP (46) . | Low-risk IVP (21) . | P value . |
|---|---|---|---|
| Age (years) | 14 [13–16] | 15 [12–16] | 0.914 |
| Male | 29 (63) | 14 (67) | 0.992 |
| Symptoms | 16 (35) | 7 (33) | 0.873 |
| AP location: | 0.65 | ||
| LPS | 7 (15) | 4 (19) | |
| LL | 10 (22) | 4 (19) | |
| PH/RS | 18 (39) | 7 (33) | |
| RL | 10 (22) | 6 (29) | |
| RL + LL | 1 (2) | 0 (0) | 0.956 |
| Only left APs | 17 (37) | 8 (38) | |
| AVN ERP | |||
| Baseline | 250 [230–280] | 260 [230–290] | 0.662 |
| ISO or ET | 190 [180–210] | 180 [160–200] | 0.190 |
| AP ERP | |||
| Baseline | 300 [280–320] | 310 [270–440] | 0.227 |
| ISO or ET | 230 [220–240] | 280 [270–280] | <0.001 |
| SPERRI or 1:1 AP conduction | |||
| Baseline | 305 [290–360] | 380 [340–420] | 0.09 |
| ISO or ET | 230 [220–240] | 340 [270–410] | <0.001 |
| AF inducibility | |||
| Baseline | 7 (15) | 3 (15) | 0.726 |
| ISO or ET | 5 (12) | 2 (11) | 0.702 |
| AVRT inducibility | |||
| Baseline | 11 (24) | 5 (24) | 0.765 |
| ISO or ET | 16 (37) | 7 (39) | 0.868 |
Legend: AF, Atrial fibrillation; AP, Accessory pathway; AVRT, Atrioventricular re-entrant tachycardia; ERP, Effective refractory period; ET, exercise testing; ISO, Isoproterenol infusion; LL, Left lateral; LPS, Left posteroseptal; PH, Para-Hissian; RL, Right lateral; RS, Right anterior septal.
Values are expressed as number (%) or median [IQR].
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