Contrast TEE performed at the end of the procedure revealed residual right-to-left shunt
in 26% of patients: it was mild in 85% of cases and moderate in 15%.
Paradoxical air emboli related to a physiological cardiac right-to-left shunt
Major Finding: Patients who have migraine with aura and a heart with a large right-to-left shunt
showed significant deficits in verbal learning and memory, compared with patients with no right-to-left shunting.
A TTE with ASCT was repeated and performed in reversed Trendelenburg position demonstrating a strongly and obvious right-to-left shunt
through a PFO (Figure 1).
Jackson, "Pulmonary arteriovenous malformations: effect of embolization on right-to-left shunt
, hypoxemia, and exercise tolerance in 66 patients," American Journal of Roentgenology, vol.
Unusual collaterals established between systemic and pulmonary veins presumably due to increased venous pressures causing a right-to-left shunt
In total anomalous pulmonary venous return (TAPVR), the pulmonary veins make an abnormal connection to the right atrium, with coronary sinus or systemic veins resulting physiologically in an extracardiac right-to-left shunt
. This anomaly is accompanied by an intracardiac left-to-right shunt through a patent foramen ovale or an atrial septal defect.
Fentanyl helped to blunt catecholamine surges which can lead to an increased right ventricular outflow tract obstruction and right-to-left shunt
. Care was taken to avoid hypoxaemia during induction and maintenance in our patient by adjusting inspired oxygen concentration, ensuring adequate hydration, maintenance of systemic arterial blood pressure and avoidance of sudden increases in systemic oxygen demand by maintaining adequate depth of anaesthesia.
(14.) Gas exchange detection of right-to-left shunt
in dyspneic patients: Report of three cases Chuang ML, Int J Cardiol.
MIST strengthened the hypothesis that PFO and migraine are linked: More than 60% of the 432 migraineurs screened for the study had a right-to-left shunt
. Of those, almost 40% had a moderate or large PFO.
Although results are not finalized, enrollment data show 60% of 370 participants having a right-to-left shunt
(versus 27% of the general population) and 38% having a large PFO (versus 7% of the general population).
We present one such case of treatable dyspnea due to patent foramen ovale (PFO) related right-to-left shunt
(RLS) in setting of right hemidiaphragm paralysis.