Agenesis of the intrapulmonary and extrapulmonary veins of the right lung was found by angiography and histological examination in a three year old boy. Blood supplied by the intersegmental arteries drained via the pulmonary arteries of the right lung into main and left pulmonary arteries. This caused a shunt between the aorta and pulmonary artery. Agenesis of the pulmonary venous system as a c...

WHITE, FRED N., AND GORDON Ross. Circulatory changes during experimental diving in the turtle. Am. J. Physiol. 2 I I ( I) : I 518. I g66.-Blood flow (electromagnetic flowmeters) and pressures in pulmonary and systemic circuits were studied in intact, unanesthetized turtles (Pseudemys scripta) in both nondiving and diving states. Cardiac output (combined pulmonary, left and right arch flows) in ...

The pulsed Doppler technique was used to record the flow velocity patterns in the ductus arteriosus and the pulmonary artery in 26 patients with either isolated or complicated patent ductus arteriosus (PDA). In all patients, abnormal Doppler signals indicating left-to-right (L-R) or right-to-left shunt flow or both could be obtained at the site of the ductus arteriosus. These Doppler flow patte...

Purpose: To investigatge right-to-left shunt determination in dog lungs under inhalantion anesthesia with non-rebreathing and rebreathing systems and fraction of inspired oxygen (FIO2) of 0.9 and 0.4, respectively. Methods: Two groups of 10 dogs each under inhalation anesthesia with sevoflurane: GI in which it was utilized non-rebreathing semiclosed system and FIO2 = 0.9, and GII in which it wa...

A quantitative radionuclide angiogram technique using an intravenous injection of technetium99m (Tc-99m) pertechnetate is described for quantitation of left-to-right shunts in the central circulation. Data analysis assumes exponential indicator clearance from normal cardiac chambers by dilution. A late prolongation of tracer disappearance compared to the initial clearance rate indicates an abno...

The presence of a large right-to-left shunt is associated with neurological decompression illness after non-provocative dives, as a result of paradoxical gas embolism. A small number of observations suggest that cutaneous decompression illness is also associated with a right-to-left shunt, although an embolic aetiology of a diffuse rash is more difficult to explain. We performed a retrospective...

A 52-year-old man was admitted with a brain abscess in the left basal ganglia. He had a paradoxical brain embolic mechanism owing to a pulmonary arteriovenous fistula (PAVF) and was diagnosed as having a right-to-left shunt by transesophageal echocardiography (TEE) and transcranial color Doppler (TCD) with saline contrast medium. We determined that the brain abscess was caused by the PAVFs with...

We report an infant with left eye blinking seizures accompanying a left (ipsilateral) fronto-temporal scalp EEG ictal pattern. The epileptogenic lesion was a left frontal encephalomalacia along the ventriculo-peritoneal shunt tract. The shunt was inserted for treatment of communicating hydrocephalus. This case illustrates the lateralizing value of the ictal blinking. Review of the literature su...

WHITE, FRED N., AND GORDON Ross. Circulatory changes during experimental diving in the turtle. Am. J. Physiol. 2 I I ( I) : I 518. I g66.-Blood flow (electromagnetic flowmeters) and pressures in pulmonary and systemic circuits were studied in intact, unanesthetized turtles (Pseudemys scripta) in both nondiving and diving states. Cardiac output (combined pulmonary, left and right arch flows) in ...

PURPOSE To report a clinical case of optic nerve compression by supraclinoidal internal carotid artery associated with optociliary shunt vessels. METHODS A 78-year-old woman with the clinical triad of left visual loss, ipsilateral optic disc pallor, and retinochoroidal (optociliary) shunt vessels is reported. She complained of loss of vision in the left eye of 2 years'' duration. RESULTS A ...