Group 1 (n = 9) | Group 2 (n = 5) | Group 3 (n = 10) | |
---|---|---|---|
ERPA (ms) | |||
Basal | 240 (25) | 260 (36) | 280 (64) |
Isoprenaline | 250 (25) | 245 (24) | 260 (75) |
AntERPFP (ms) | |||
Basal | 335 (34) | 324 (52) | 395 (76) |
Isoprenaline | 405 (31)1-150 | 308 (57)† | 346 (85)1-150 |
AntERPSP (ms) | |||
Basal | 269 (11) | 274 (50) | 290 (63) |
Isoprenaline | 297 (11) | No duality | 322 (64) |
Min A2–H2SP (ms) | |||
Basal | 267 (25) | 280 (38) | 274 (34) |
Isoprenaline | 210 (24)1-150 | No duality | 331 (34)1-150 |
Max A2–H2SP (ms) | |||
Basal | 328 (25) | 335 (45) | 351 (33) |
Isoprenaline | 275 (25)1-150 | No duality | 407 (33)1-150 |
ERPV (ms) | |||
Basal | 376 (61) | 340 (25) | 370 (58) |
Isoprenaline | 360 (48) | 325 (45) | 276 (46)1-150 |
Max V2–A2 (ms) | |||
Basal | 365 (40) | 324 (27) | 385 (33) |
Isoprenaline | 348 (32) | 318 (18) | 335 (44)1-150 |
Min V2–A2 (ms) | |||
Basal | 288 (25) | 295 (20) | 320 (35) |
Isoprenaline | 274 (11) | 280 (14) | 255 (11)1-150 |
Mean (SD) values of the refractory periods are given at 500 ms basic pacing cycle length.
↵1-150 p < 0.001; †p < 0.005.
A, atrium; Ant, anterograde; ERP, effective refractory period; FP, fast pathway; Max, maximal, Min, minimal; SP, slow pathway; V, ventricle.