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Laterality and tip position of the catheters.
| Tip position | Right | Left | Total |
| SVC (Zone 1) | 4 (6.8%) | 1 (1.7%) | 5 (8.5%) |
| CAJ (Zone 2) | 42 (71.1%) | 4 (6.8%) | 46 (77.9%) |
| RA (Zone 3) | 5 (8.5%) | 3 (5.1%) | 8 (13.6%) |
| Total | 51 (86.4%) | 8 (13.6%) | 59 (100%) |
CAJ = cavoatrial junction, RA = right atrium, SVC = superior vena cava.
