CECORP – Ribeirão Preto, BIOCOR – Belo Horizonte and Medical School of Ribeirão Preto USP Mailing address: Paulo Roberto B. Evora Rua Rui Barbosa, 367/15 Cep 14015-120 Ribeirão Preto, SP, Brazil E-mail: [email protected] Received for publication: 07/01/2004 Accepted for publication: 07/29/2004 The Wolff-Parkinson-White syndrome (WPW) and sinus venosus atrial septal defect (ASD) association...

Transvenous pacemaker and/or defibrillator lead placement into the left heart chambers is rarely done. Approximately a third of such cases reported in the literature presented with signs of thromboembolism, mostly neurological deficits. We describe a patient who presented with a cerebrovascular accident three months after inadvertent and unrecognized lead placement into the left atrium and vent...

We read the article published by Laguna et al with interest. However, in the wake of that reading, we would like to make a few comments that we believe to be important. The sinus venosus forms part of the right atrium during embryonic development. Over the course of this period, the left cusp of the sinus venosus valve is incorporated into the septum secundum, whereas the right cusp gives rise ...

The effects of sympathetic nerve stimulation on beat rate, force, intracellular Ca2+ concentration ([Ca2+]i) measured using fura 2, and membrane potential were recorded from the spontaneously beating toad sinus venosus. Short trains of stimuli evoked an increase in the beat rate and force. During this tachycardia the amplitude of pacemaker action potentials was not changed, but there was an inc...

Transmembrane action potentials were recorded from embryonic rat hearts at ages between 10& days of gestation and birth (21 to 22 days). The resting potential averaged 30 to 40 mv at IOJ2 days and increased to around 80 mv by birth. Two periods of rapid increase in resting potential were noted: 1) from 10^ to 13& days and 2) from 19M days of gestation to birth. The maximal upstroke velocity of ...

Left hepatic vein (LHV) that drains blood into a coronary sinus (CS) is an extremely rare congenital anomaly of systemic vein drainage with only single reports published. In most of these cases the unusual venous connection was found incidentally during diagnostics or surgery. The case of a two-year-old boy in whom the anomaly was discovered during open heart surgery for partial anomalous pulmo...