Valve-sparing transseptal excision of a large left atrial myxoma rapidly reversed functional mitral stenosis, reducing the mean transmitral gradient from 9 mmHg to 1.3-1.4 mmHg.
Case Report (n=1)
No
Valve-sparing transseptal excision of a large left atrial myxoma rapidly reverses functional mitral stenosis and normalizes transmitral hemodynamics.
Absolute Event Rate: 1.35% vs 9%
Left atrial myxomas are rare, potentially life-threatening benign cardiac tumors. Early surgical excision is recommended to prevent embolic events, obstruction, and sudden death. A 72-year-old Turkish woman presented with exertional dyspnea and palpitations. Transthoracic echocardiography demonstrated a 4.7 cm × 2.7 cm mobile left atrial mass attached to the interatrial septum and prolapsing into the mitral orifice with a mean transmitral gradient of 9 mmHg and no evidence of embolization. Elective median sternotomy under cardiopulmonary bypass via a right atriotomy–transseptal approach enabled en bloc excision with primary septal closure. Postoperative transesophageal echocardiography confirmed complete resection with preserved mitral valve function, and the mean transmitral gradient fell immediately to ~1.3–1.4 mmHg, indicating prompt hemodynamic normalization. Recovery was uneventful, and the patient was discharged on postoperative day 8. This case demonstrates the rapid reversal of myxoma-related functional mitral stenosis following valve-sparing transseptal excision, with immediate normalization of the mean transmitral gradient.
Bozkurt et al. (Thu,) conducted a case report in Left atrial myxoma with functional mitral stenosis (n=1). Valve-sparing transseptal excision vs. Preoperative baseline was evaluated on Mean transmitral gradient. Valve-sparing transseptal excision of a large left atrial myxoma rapidly reversed functional mitral stenosis, reducing the mean transmitral gradient from 9 mmHg to 1.3-1.4 mmHg.