High-output heart failure secondary to iatrogenic arteriovenous fistula: A case report

Figure 2 Comparison of preoperative and 4-month postoperative transthoracic Echocardiograms. A: The diameter of the right atrium (RA) is 84 mm, there is severe tricuspid regurgitation, the maximum flow velocity is 4.4 mL/s, and the estimated pulmonary hypertension is 73 mmHg; B: The diameter of the RA is 35 mm, there is only mild tricuspid regurgitation, and the maximum flow velocity is 2.0 mL/s (the orange arrow represents the tricuspid regurgitation jet).