Archivos de cardiología de México
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Persistent left superior vena cava (PLSVC) is a structural, asymptomatic and infrequent anomaly, present in 0.5% of the general population. Typically the diagnosis reveals itself unexpectedly at the time of pacemaker implantation, when it acquires anatomic relevancy. Several techniques are used for the transvenous approach to enter the central venous circulation; the left subclavian vein has become a common access site for electrode implantation and, occasionally, one can find an anomalous venous structure such as a PLSVC. Placement of electrodes through this anomalous venous structure can prove challenging, if not impossible. The present report tries to explore aspects of transimplantation diagnosis from a practical point of view. It also address the knowledge of anatomy, implant technique and radiographic orientation. ⋯ Today, the preferred approach for pacemaker lead implantation is via the left subclavian vein and the operator must be aware of this venous anomaly that may technically complicate the electrode positioning. This kowledge may be useful for other medical specialties that require the implant of left sided transvenous subclavian catheters, like in critical care settings, nephrology, onco-hematology, and anesthesiology.
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Randomized Controlled Trial Comparative Study
[Impact of the intra-aortic balloon pump in the mortality due to cardiogenic shock secondary to acute myocardial infarction].
To determine the impact of the intra-aortic balloon pump in the mortality due to cardiogenic shock post-acute myocardial infarction. ⋯ The use of the intra-aortic balloon pump in the treatment of cardiogenic shock post acute myocardial infarction reduces the mortality when associated with the use of inotropics and reperfusion.
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Case Reports
[Hemorrhagic pericarditis and cardiac tamponade in systemic lupus erythematosus. A case report].
Systemic lupus erythematosus is a chronic inflammatory autoimmune disorder that can affect any organ or system. Although pericarditis is the most frequent cardiac manifestation of this entity, usually is not a life threatening situation. ⋯ We report a case of pericardial tamponade due to SLE with severe hemodynamic involvement in a 21-year-old woman associated to rapidly progressive glomerulonephritis, acute pancreatitis, acute acalculous cholecystitis, pleural effusion, hematologic, cutaneous and neurologic lupus activity. Recognition of this rare manifestation of SLE may be life saving.