Table 3. Incidence of Induced Incompetence of the Internal Jugular Vein Valve and Cross-sectional Area of the Internal Jugular Vein in 18 Patients with Valvular Incompetence after Removal of the Catheter and Follow-up after 8–27 Months
Data are number of patients (%) or mean ± SD.
* Based on a semiquantitative five-grade scale, diagnosis of induced valvular incompetence was made if regurgitation grades during Valsalva maneuvers increased by > 1 grade at T2, T3, and T4, compared with the baseline finding at T1.
† AreaIJVsignificantly larger than at baseline (P < 0.01).
‡ AreaIJVsignificantly smaller than at T3 (P < 0.05).
IJV = internal jugular vein; Preop = preoperative study; Postop = postoperative study.