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Intracardiac thrombus (ICT) is a multifactorial condition that can occur after major vascular surgeries. ICT is uncommon after liver transplantation (LT), and mortality is high. Activation of coagulation system, stasis-induced inferior vena cava and portal vein clamping, massive blood transfusion, and venovenous bypass predispose to thrombus formation after reperfusion. In the current study, we present a patient who underwent cardiac surgery because of right atrium thrombus after LT.
A 49-year-old, 65 kg female patient admitted to our hospital with dyspnea, which was received a live donor. A thrombus was detected in the right atrium, right main pulmonary artery, left main pulmonary artery bifurcation, and the distal of vena cava inferior starting from the main iliac vein which was allowing to flow in chest computed tomography [Figure 1a]. Transthoracic echocardiography after LT that is done 6 months ago was normal. The patient was taken to the operating room. Anesthesia induction was included. Cardiopulmonary bypass time was 135 min and thrombus in size 2 cm × 1.5 cm was removed [Figure 1b]. No complications were observed during the operation. The patient was taken to the intensive care unit and died due to deterioration of overall situation 4 days later.
Anesthetic management of a patient who has ICT during or after LT is extremely important. ICT can lead to many complications that can cause to intraoperative death. Peiris et al. have reported that venous thrombosis, atrial fibrillation, and transjugular intrahepatic portosystemic shunt for portal hypertension (TIPS) are responsible for ICT during LT. Many studies revealed that atrial fibrillation and development of TIPS are risk factors for ICT.
There is not an accepted standard method of hemodynamic monitoring in this patient. Systemic arterial pressure, central venous pressure, pulmonary artery catheterization (PAC), and TEE are the parts of hemodynamic monitorization. PAC can be helpful during monitoring of hemodynamic changes, but Gwak et al. reported that incidence of arrhythmia was 70% during PAC, 37% of those were benign, and 33% were severe arrhythmia. The catheter slides can be passed without touching the thrombus during PAC or having more thrombus moved can cause death. TEE is now accepted as a gold standard noninvasive method according to PAC. Anesthetists must be careful about hemodynamic parameter changes due to the localization of thrombus and position changes. TEE also provides very valuable information about evaluating the thrombus formation, extent and response to treatment at real time evaluation. Mutlak et al. reported a liver transplant case that had to be canceled due to ICT detected by TEE immediately after induction of anesthesia. Anesthetists should be more careful for cardiac surgery of cardiac thrombus during or after LT.
In this case report, development of ICT after LT was highlighted. We believe that control echocardiography before surgery in liver-transplanted patients can be useful. Although the formation of ICT is rare after LT, anesthetists should be careful in anesthetic management because of high mortality and preoperative examination should be done in detail.
There are no conflicts of interest.