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Data on the feasibility of an ultrasound‑guided venous access (USGVA) for catheter ablation (CA) and electrophysiological studies (EPS) in large cohorts are scarce. The impact of the Valsalva maneuver (VM), which can increase the diameter of the femoral vein (FV), on the USGVA is unknown.

Ultrasound‑guided venous access facilitated by the Valsalva maneuver during invasive electrophysiological procedures