Table 2.
Detailed summary of CS-LA connections
| CS-LA Direction of Conduction | n, (%) | Block Cycle Length (ms) | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| None | CS→LA | LA→CS | Both | 1000 | 500 | 400 | 300 | 250 | <250 | ||
| CS 9,10 | 0 | 1 | 5 | 24 | 30 (100) | 0 | 0 | 0 | 2 | 4 | 24 |
| CS 7,8 | 21 | 1 | 5 | 3 | 9 (30) | 0 | 0 | 1 | 2 | 1 | 5 |
| CS 5,6 | 23 | 1 | 4 | 2 | 7 (23) | 0 | 0 | 0 | 2 | 0 | 5 |
| CS 3,4 | 23 | 3 | 1 | 3 | 7 (23) | 0 | 0 | 0 | 0 | 0 | 7 |
| CS 1,2 | 1 | 12 | 3 | 14 | 29 (97) | 0 | 2 | 1 | 1 | 2 | 23 |
CS: Coronary sinus; LA: Left atrium; None: No conduction between CS-LA at this site; CS→LA: Unidirectional conduction from CS to LA at this site; LA→CS: Unidirectional conduction from LA to CS at this site; Both: Bidirectional conduction between CS and LA at this site