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The Genetics of Laterality Defects
The Genetics of Laterality Defects

... condition: isomerism sequence, asplenia syndrome, Ivemark syndrome, polysplenia syndrome, situs ambiguous, heterotaxia, partial situs inversus and laterality sequence! The particular type and severity of heart defect that can result will depend on the particular laterality disturbance condition, and ...
Human Circulatory System 1
Human Circulatory System 1

... Impulse is picked up by the AV node (atrioventricular) Split-second delay then both ventricles contract, pumping blood out of the heart ...
12-Development_of_Heart
12-Development_of_Heart

... • Foramen secundum: formed by fusion of many perforations appearing in the central part of septum primum • Septum secundum: a crescent-shaped septum arises from the roof of atrium to the right of septum primum & overlaps foramen secundum ...
Lab #6: Animal Circulation
Lab #6: Animal Circulation

... In this Lab exercise, we will examine the anatomy and physiology of animal circulation. You by now have read and heard about animal circulation, and the lab activities here will help add to your knowledge. As we link the circulatory and respiratory function together, we focus on the role of the circ ...
Fetal_abnormalities
Fetal_abnormalities

... – Upper portion – left atrium – Lower portion – left ventricle and IVC ...
奇美醫學中心胸腔內,外,放射科臨床病例綜合討論會
奇美醫學中心胸腔內,外,放射科臨床病例綜合討論會

... echocardiography and transesophageal echocardiography, TEE). Evaluation of the arterial and venous supply to the right lung via angiography provides the definitive diagnosis. One case report suggests TEE to be a promising way to evaluate the anomalous vein, especially if surgery is considered becaus ...
奇美醫學中心胸腔內,外,放射科臨床病例綜合討論會
奇美醫學中心胸腔內,外,放射科臨床病例綜合討論會

... evaluate the hypoplastic lung) and ultrasound (transthoracic echocardiography and transesophageal echocardiography, TEE). Evaluation of the arterial and venous supply to the right lung via angiography provides the definitive diagnosis. One case report suggests TEE to be a promising way to evaluate t ...
Location of the heart
Location of the heart

... The degree of ventricular stretching during ventricular diastole ...
Sheep Heart Dissection
Sheep Heart Dissection

... to the heart. The thicker-walled aorta, which branches almost immediately, is located just beneath the pulmonary trunk. The first branch of the sheep aorta, the brachiocephalic artery, can be identified unless the aorta has been cut immediately as it leaves the heart. The brachiocephalic artery spli ...
the heart and blood flow
the heart and blood flow

... Humans and other mammals have two-circuit circulatory systems: one circuit is for pulmonary circulation (circulation to the lungs; pulmo = lungs), and the other circuit is for systemic circulation (the rest of the body). As each atrium and ventricle contract, blood is pumped into certain major blood ...
Sequential Segmental Analysis of the Heart: A Malformation
Sequential Segmental Analysis of the Heart: A Malformation

... When both atria, irrespective of their arrangement, connect to the same ventricle, the term used is double inlet ventricle. There are usually two chambers in the ventricular mass, the second chamber being rudimentary. The other types of univentricular atrioventricular connection occur when one of th ...
Heart and Circulatio..
Heart and Circulatio..

... the pulmonary veins. • The blood then moves into the left ventricle where it is pumped out through the aorta to the various tissues and organs of the body (systemic circulation). ...
Familial atrial septal defect in a single - Heart
Familial atrial septal defect in a single - Heart

... dyspnoea. The physical examination revealed a widely split and fixed second heart sound, an ejection murmur at the left sternal border, and a short early diastolic rumble. The electrocardiogram showed right axis deviation. The chest x-ray revealed cardiomegaly, a prominent pulmonary artery, and incr ...
Electrical Conductivity System of the Heart
Electrical Conductivity System of the Heart

... oxygenated blood around the vascular network of the body. It is a four-chamber pump, with the right side receiving deoxygenated blood from the body at low pressure and pumping it to the lungs (the pulmonary circulation) and the left side receiving oxygenated blood from the lungs and pumping it at hi ...
Pressures Within the Heart Factsheet
Pressures Within the Heart Factsheet

... The pressure of blood flow within the heart affects the direction and force of the blood as it moves within the body. If the pressure is not as normally expected, it can affect the function of the heart and the circulation of blood. To understand how the blood flows in and out of the heart, it is im ...
Why Dissect?
Why Dissect?

... of the heart. On one side of the heart you will see a diagonal line of blood vessels that divide the heart. • The half that includes all of the apex (pointed end) of the heart is the left side. • Confirm this by squeezing each half of the heart. The left half will feel much firmer and more muscular ...
عرض تقديمي من PowerPoint
عرض تقديمي من PowerPoint

... (contacts connective chest tissues wall of between valves 5th as a single ...
LECTURE EXAM 2 -
LECTURE EXAM 2 -

... a. is the primary source of oxygenated blood to the thoracic wall b. serves primarily to return thoracic blood to the inferior vena cava c. receives three lymph ducts from the upper right side of the body d. drains into the cisterna chyli e. receives blood from intercostal veins 23. When you throw a ...
Pulmonary Valve Stenosis and Regurgitation
Pulmonary Valve Stenosis and Regurgitation

... Note: before reading the specific defect information and the image associated with it, it will be helpful to review normal heart function.) What is it? The pulmonary valve opens to let blood flow from the right ventricle to the lungs. Narrowing of the pulmonary valve, known as valvular pulmonary ste ...
RR _106-Defects - Multiples of America
RR _106-Defects - Multiples of America

... were found in utero (22%) or in the first 6 weeks (23%). Very few were discovered after age 1, with one having the defect discovered at age 5. ...
Atrioventricular Canal Defect
Atrioventricular Canal Defect

... the lower chambers (ventricles). This septal defect involves both upper and lower chambers. Also, the tricuspid and mitral valves that normally separate the heart’s upper and lower chambers aren’t formed as individual valves. Instead, a single large valve forms that crosses the defect in the wall be ...
Surgery for Congenital Heart Diseases
Surgery for Congenital Heart Diseases

... • Small VSDs (Qp/Qs < 1.5) : not indicated, risk of bacterial endocarditis • Subarterial type : early repair is indicated before ...
Pulmonary Artery Catheters
Pulmonary Artery Catheters

... - disadvantages: requires insertion of PAC, mixing with venous blood may be incomplete, PA blood flow varies greatly with respiration - causes of inaccuracies: catheter malposition, injection mistakes (volume, speed, temperature), inaccurate thermister, TR, intra-cardiac shunts, wrong computation co ...
Changes in the Circulatory and Respiratory Systems at Birth
Changes in the Circulatory and Respiratory Systems at Birth

... blood would continuously spill to the left side via the foramen ovale. 2. Blood of the pulmonary arch would miss the lung and go to the aorta, mixing there. 3. This would result in hypoxia – lack of adequate oxygen in arterial blood. 4. Lungs would be bypassed continuously, deteriorating quickly. ...
Document
Document

... on the LEFT side and the arch of the aorta (also on the left side). 2nd: The FORAMEN OVALE is a hole between the right and left atria, allowing blood to pass from the right side to the left and not ever get pumped to the lungs. ...
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Atrial septal defect



Atrial septal defect (ASD) is a congenital heart defect in which blood flows between the atria (upper chambers) of the heart. Normally, the atria are separated by a dividing wall, the interatrial septum. If this septum is defective or absent, then oxygen-rich blood can flow directly from the left side of the heart to mix with the oxygen-poor blood in the right side of the heart, or vice versa. This can lead to lower-than-normal oxygen levels in the arterial blood that supplies the brain, organs, and tissues. However, an ASD may not produce noticeable signs or symptoms, especially if the defect is small.A ""shunt"" is the presence of a net flow of blood through the defect, either from left to right or right to left. The amount of shunting present, if any, determines the hemodynamic significance of the ASD. A ""right-to-left-shunt"" typically poses the more dangerous scenario.During development of the fetus, the interatrial septum develops to separate the left and right atria. However, a hole in the septum called the foramen ovale, allows blood from the right atrium to enter the left atrium during fetal development. This opening allows blood to bypass the nonfunctional fetal lungs while the fetus obtains its oxygen from the placenta. A layer of tissue called the septum primum acts as a valve over the foramen ovale during fetal development. After birth, the pressure in the right side of the heart drops as the lungs open and begin working, causing the foramen ovale to close entirely. In approximately 25% of adults, the foramen ovale does not entirely seal. In these cases, any elevation of the pressure in the pulmonary circulatory system (due to pulmonary hypertension, temporarily while coughing, etc.) can cause the foramen ovale to remain open. This is known as a patent foramen ovale (PFO), which is a type of atrial septal defect.
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