PMC8754445_01
Preoperative right venogram showing stenosis of right subclavian and mid superior Ven cava.
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A 37-year-old female on regular dialysis with previous right subclavian vein stent and SVC angioplasty was admitted with SVC syndrome (Fig. 1A). Transthoracic echocardiography showed a 1.9 cm circumferential pericardial effusion with a foreign body projecting into the right atrial wall (Fig. 1B). SVC with contrast extravasation into the pericardial cavity (Fig. 1D) and pleural effusion. She was discussed in a multidisciplinary meeting and decided to perform preoperative pericardiocentesis to achieve hemodynamic stabilisation and scheduled her later for emergency cardiac surgery.
Preoperative transthoracic echocardiography demonstrating the presence of entrapped stent in right atrium with pericardial effusion. 1B1 Preoperative transthoracic echocardiography demonstrating the presence of entrapped stent in right atrium (broad white arrow). 1B2 Preoperative transthoracic echocardiography demonstrating the pericardial effusion with compression of right heart.
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The stent was crushed out of the SVC opening into the right atrium to prevent the possibility of airlock during CPB (Fig. 2).