Project description:We experienced a case of lead-related SVC syndrome, which was successfully treated using unique transvenous lead extraction technique and endovascular stenting. This case also suggests that intravascular ultrasound facilitates decision-making on whether the interventionist should perform TLE alone or add stenting in case of a lead-related venous obstruction.

| S-EPMC10549838 | biostudies-literature

Pacemaker Placement in Persistent Left Superior Vena Cava.

Project description:Persistent left superior vena cava (PLSVC) is a rare disorder which is asymptomatic and hence is usually discovered while performing interventions through the left subclavian vein. We present a case of a 78-year-old male who was undergoing elective placement of a permanent pacemaker for tachycardia - bradycardia syndrome with post-conversion pauses of up to nine seconds. After achieving access through the left subclavian vein the wire kept on going on the left side of the chest instead of crossing the midline to the right side. The wire was removed and contrast venography was done, PLSVC with dilated coronary sinus emptying into the right atrium was confirmed. There was some difficulty in passing the lead to the right ventricle even with the acute curve in the stylet. The sheath size was increased and a longer deflectable sheath was used and with the tip of the lead anteriorly the right ventricle was cannulated and the lead was affixed. There were good sensing and pacing parameters. Post procedure chest x-ray was done and the patient was discharged without any complications.

| S-EPMC5498123 | biostudies-other

Open reconstruction of severe superior vena cava syndrome with right internal jugular-Superior vena cava bypass using femoral vein.

Project description: Not available

| S-EPMC10547727 | biostudies-literature

An Ectopic Primary Pacemaker in Association with Isolated Persistent Left Superior Vena Cava.

Project description:We are reporting a case of a young Nepalese man, who was not known to have any past medical history, and who presented with palpitations. An electrocardiogram showed negative P-waves atrial rhythm in II, III, arteriovenous fistula, and V3-V6 with a variable block at 90-130 bpm. No positive "normal" P-waves were demonstrated in any tracing. He was found to have a congenital absence of the right superior vena cava (RSVC) along with persistent left superior vena cava (PLSVC) a condition also called isolated PLSVC (IPLSC). He underwent a treadmill stress test for further evaluation which showed a normal chronotropic response and the same persistent negative P-waves morphology. An invasive electroanatomical and activation mapping showed an absence of RSVC, the earliest atrial activation site in the anterior side of the inferior vena cava (IVC), and the absence of normal (positive) P-waves/normal sinus node (SN) activation. Considering all the available clinical data together, we believe that the patient was living with an ectopic pacemaker node that acts as a primary node and originated in the IVC/right atrium instead of the normal expected SN position. Given the high risk of complete sinoatrial nodal block in case of radiofrequency ablation, the patient was kept on medical treatment with a beta-blocker which was effective in controlling his symptoms and atrial arrhythmia.

| S-EPMC9542964 | biostudies-literature

A STUDY OF SUPERIOR VENA CAVA OBSTRUCTION SYNDROME.

Project description:Superior vena cava obstruction syndrome was studied in 22 patients with a view to assess the etiological pattern and clinical profile. It was found that 4 patients (18.1%) had benign disease and the remaining 18 (81.9%) patients had malignancy. In 13 patients (59.9%) obstruction occurred due to bronchogenic carinoma. No complications occurred with invasive diagnostic procedures. All heavy smokers (59.9%) were found to have malignancy. Normal lung fields on chest radiography and CT scan with superior vena obstruction syndrome suggested benign disease in 2 cases.

| S-EPMC5530844 | biostudies-other

A transudative chylothorax associated with superior vena cava syndrome.

Project description:The chylothorax is a lymphocyte predominant protein-discordant exudative pleural effusions with low lactate dehydrogenase and elevated triglyceride levels. Transudative chylothoraces associated with Superior Cava syndrome (SVC) are an extremely rare clinical entity. In this manuscript, we describe a case of transudative chylothorax due to SVC obstruction secondary to thrombosis of a peripheral inserted central venous catheter, which ultimately resolved after endovascular intervention. In our review of the literature, only five cases of transudative chylothorax associated with SVC syndrome were identified with 60% of cases associated with thrombosis and complications due to catheters in the central venous circulation. Treatment of the underlying cause is key to resolution of the chylothorax. Thoracentesis is an initial intervention for diagnostic and therapeutic purposes. Endovascular intervention is the primary mode of treatment for SVC thrombosis and stenting is preferred for malignant causes, however anticoagulation alone has been reported in the resolution of chylothorax. In patients with recurrent chylothorax despite of relief of SVC obstruction, a medium-chain triglyceride diet and octreotide can be prescribed in order to decrease the chyle flow in the thoracic duct. Surgical ligation of the thoracic duct can be considered if medical management and endovascular treatment fails.

| S-EPMC6626116 | biostudies-literature

Absent right superior vena cava and persistent left superior vena cava: An incidental finding.

Project description:A patient with Marfan syndrome undergoing Bentall operation was found to have an absent right superior vena cava and persistent left superior vena cava. The dilation of coronary sinus raised the suspicion of persistent left superior vena cava. The diagnosis was confirmed by agitated saline contrast echocardiography and computed tomography of the chest.

| S-EPMC10691572 | biostudies-literature

Biatrial drainage of right superior vena cava with left superior vena cava: A diagnostic conundrum.

Project description: Not available

| S-EPMC9366530 | biostudies-literature