Effects of close intra-arterial injections of angiotensins I and II on changes in renal blood flow and renal vascular resistance were studied in dogs anesthetized with pentobarbital sodium. In the first series of experiments, angiotensin I (0.375 fig) or angiotensin II (0.13 fig) decreased renal blood flow and pressures in a small renal cortical vein and the renal vein. Although renal vascular ...

Consumption of calorie-containing sugars elicits appetitive behavioral responses and dopamine release in the ventral striatum, even in the absence of sweet-taste transduction machinery. However, it is unclear if such reward-related postingestive effects reflect preabsorptive or postabsorptive events. In support of the importance of postabsorptive glucose detection, we found that, in rat behavio...

Collateral damage to esophagus with ablative therapies for atrial fibrillation (AF) remains a major concern with percutaneous catheter based therapies. Endoscopically documented thermal injuries to the esophageal mucosa such as ulcerations or hemorrhages are seen in a significant percentage of patients undergoing AF ablation. [1,2] The reporting of occurrence of a fatal left atrio-oesophageal f...

UNLABELLED A 37-year-old female presented to our facility suffering from exertional dyspnea for 2-3 months. Her chest x-ray showed a nodular shadow in the right lower lung, and chest CT revealed a pulmonary arteriovenous fistula (PAVF). Subsequent echocardiographic examination detected no intra-cardiac shunt but did indicate pulmonary hypertension as evidenced by a tricuspid regurgitation flow ...

Objective: We studied finder needle use in Internal Jugular Vein (IJV) catheterization and complications rate in adult cardiac surgery. Methods: A prospective study was carried out for 3 month period from august to November 2007 and all patients older than 18 years who underwent elective cardiac surgery were studied. Data were collected about using finder needle, patient position, success rate,...

BACKGROUND High incidences of silent cerebral ischemia (SCI) have been revealed by diffusion-weighted magnetic resonance imaging (DW MRI) after pulmonary vein isolation (PVI) for atrial fibrillation. A high number of mostly gaseous micro-embolic signals (MESs) was detected by transcranial Doppler (TCD) during PVI. In this investigation the possible relationship between MESs detected intraoperat...

budd-chiari syndrome is caused by the obstruction of the hepatic venous, with high mortality rate in nontreated cases. because the clinical presentation of this syndrome is nonspecific, is very important. contrast enhanced multiphase computed tomography (ct) and magnetic resonance (mr) angiography permits morphologic and functional assessment of liver changes in suspicious clinical setting. the...

Purkayastha et al reported 3 cases of proatlantal intersegmental arteries of external carotid artery origin associated with Galen’s vein malformation; however, because of their configuration, I believe that the 3 cases do not demonstrate this rare arterial variation, but rather show collateral blood flow from the occipital artery (OA) to the vertebral artery (VA). In patients with a vein of Gal...

We assessed the hemodynamic effects induced by the thoracic pump in the intra- and extracranial veins of the cerebral venous system on healthy volunteers. Activation of the thoracic pump was standardized among subjects by setting the deep inspiration at 70% of individual vital capacity. Peak velocity (PV), time average velocity (TAV), vein area (VA), and flow quantification (Q) were assessed by...

Purkayastha et al reported 3 cases of proatlantal intersegmental arteries of external carotid artery origin associated with Galen’s vein malformation; however, because of their configuration, I believe that the 3 cases do not demonstrate this rare arterial variation, but rather show collateral blood flow from the occipital artery (OA) to the vertebral artery (VA). In patients with a vein of Gal...