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  2. Atrial septal defect - Wikipedia

    en.wikipedia.org/wiki/Atrial_septal_defect

    Atrial septal defect (ASD) is a congenital heart defect in which blood flows between the atria (upper chambers) of the heart.Some flow is a normal condition both pre-birth and immediately post-birth via the foramen ovale; however, when this does not naturally close after birth it is referred to as a patent (open) foramen ovale (PFO).

  3. Cardiac shunt - Wikipedia

    en.wikipedia.org/wiki/Cardiac_shunt

    The left and right sides of the heart are named from a dorsal view, i.e., looking at the heart from the back or from the perspective of the person whose heart it is. There are four chambers in a heart: an atrium (upper) and a ventricle (lower) on both the left and right sides. [1] In mammals and birds, blood from the body goes to the right side ...

  4. Paradoxical embolism - Wikipedia

    en.wikipedia.org/wiki/Paradoxical_embolism

    These routes include moving through a patent foramen ovale (a congenital hole connecting the right and left atria of the heart), a ventricular septal defect (a congenital hole connecting the ventricles), or a pulmonary arteriovenous fistula, where arteries in the lungs connect directly to veins without capillaries in between.

  5. Right-to-left shunt - Wikipedia

    en.wikipedia.org/wiki/Right-to-left_shunt

    right heart pressure is higher than left heart pressure and/or the shunt has a one-way valvular opening. Small physiological, or "normal", shunts are seen due to the return of bronchial artery blood and coronary blood through the Thebesian veins , which are deoxygenated, to the left side of the heart.

  6. Heart murmur - Wikipedia

    en.wikipedia.org/wiki/Heart_murmur

    The VSD allows deoxygenated blood to flow from the right to left side of the heart. This blood bypasses the lungs. The lack of oxygenation in the pulmonary circulation results in cyanosis. Widely split fixed S 2 and systolic ejection murmur at the left upper sternal border Classic for a patent foramen ovale (PFO) or atrial septal defect (ASD).

  7. Platypnea-orthodeoxia syndrome - Wikipedia

    en.wikipedia.org/wiki/Platypnea-orthodeoxia_syndrome

    Platypnea–orthodeoxia syndrome is a rare medical condition in which a person has shortness of breath and low oxygen saturations when upright (platypnea and orthodeoxia), but no symptoms when lying down. It can be caused by ventilation-perfusion mismatch, intracardiac shunting, or pulmonary shunting. In some cases, the cause is multifactorial ...

  8. Eisenmenger syndrome - Wikipedia

    en.wikipedia.org/wiki/Eisenmenger_syndrome

    Eisenmenger syndrome or Eisenmenger's syndrome is defined as the process in which a long-standing left-to-right cardiac shunt caused by a congenital heart defect (typically by a ventricular septal defect, atrial septal defect, or less commonly, patent ductus arteriosus) causes pulmonary hypertension [1] [2] and eventual reversal of the shunt into a cyanotic right-to-left shunt.

  9. Tetralogy of Fallot - Wikipedia

    en.wikipedia.org/wiki/Tetralogy_of_Fallot

    Right and left ventricular end-systolic and end-diastolic volume indices, ejection fractions, and the existence of aneurysm generating obstructive outflow are all parameters seen in this research. Exercise intolerance, heart failure signs and symptoms, syncope, and prolonged ventricular tachycardia are all possible symptoms.