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Case 5 Chest
Case 5 Chest

... Physician 2007, 76: 987-994. Kumar et al. Robbins and Cotran Pathologic Basis of Disease, 8th ed. Philadelphia: ...
PFO case study
PFO case study

... Prevalent in about 1 in 1,500 live births ...
Lab 03: Heart Anatomy (10 points)
Lab 03: Heart Anatomy (10 points)

... Lab Outcome 4: Identify superficial and deep structures of the heart, including the conduction system, on various heart models, diagrams, and by sheep heart dissection. Lab Outcome 5: Describe and demonstrate patterns of blood circulation throughout the human body, including systemic, pulmonary, cer ...
Cavity of right ventricle
Cavity of right ventricle

... • Its function is to ensure that the chambers of the heart contract in the proper rhythm and sequence. • The main center is the sinoatrial (SA) node, located in the right atrium • The atrioventricular (AV) node is located at the junction of the atria and the ventricles ...
the cardiac cycle - Annammal College of Nursing
the cardiac cycle - Annammal College of Nursing

... • The electrical impulse propagates from the AV node through the His bundle and Purkinje system to allow the ventricles to contract from the apex of the heart towards the base. • The QRS complex is due to ventricular depolarization, and it marks the beginning of ventricular systole. It is so large t ...
Microsoft Word - Sheep Heart Dissection
Microsoft Word - Sheep Heart Dissection

... Blood is carried away from the heart by blood vessels called arteries and carried back toward the heart by blood vessels called veins. Arteries and veins are connected by capillaries. Arteries have muscular, elastic walls to help move the blood through the body. Veins have one-way valves to prevent ...
Mitral Valve Obstruction and Pulmonary Hypertension
Mitral Valve Obstruction and Pulmonary Hypertension

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rat_cow
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Imaging Post-Fontan: Why I Do It
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Communication Associated with
Communication Associated with

... maintained in an atmosphere of humidified oxygen. Tachypnea without objective evidence of congestive heart failure persisted. Cardiac catheterization was performed at 5 days of age. The catheter passed from the right ventricle through a ventricular septal defect into the aorta. The pulmonary artery ...
Chap 23 — CV System, Part 1
Chap 23 — CV System, Part 1

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circulatory systems
circulatory systems

... – exchange gases, and – remove wastes. ...
Chronic thromboembolic pulmonary hypertension
Chronic thromboembolic pulmonary hypertension

... hypertension is present but the subject exhibits few symptoms, if any. It is during this time that compensatory hypertrophy of the right ventricle occurs in an effort to maintain cardiac output in the presence of increased pulmonary vascular resistance (PVR). ...
pulmonary circulation
pulmonary circulation

... Ebstein „Endocardial cushion defects“ Important for the development of AV region, lower part of atrial and upper part of ventricular septum Abnormal developent is responsible for cca 5% of congenital heart defects, in m. Down even in 50 % - some ASD, VSD, valvular abnormalities Ebstein – abnormal t ...
Poodle Update - Beaucaniche Standard Poodles
Poodle Update - Beaucaniche Standard Poodles

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Congenital_Heart_Dz
Congenital_Heart_Dz

... When the stenosis is severe, dyspnea on exertion or fatigability may occur Less often may have chest pain or syncope with exertion Eventually, right ventricular failure may develop, with peripheral edema and abdominal swelling If the foramen ovale patent, shunting of blood from the right to the left ...
Congenital Heart Defects Spring 2015 student copy
Congenital Heart Defects Spring 2015 student copy

...  An obstruction is a narrowing that partly or completely blocks the flow of blood.  Obstructions called stenoses can occur in heart valves, arteries or veins.  The three most common forms are pulmonary stenosis, aortic stenosis and coarctation of the aorta. ...
Name of presentation
Name of presentation

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Heart Dissection Solutions
Heart Dissection Solutions

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Pericardium
Pericardium

... *continue with the lining of the large blood vessels — myocardium *2 kinds: the ordinary cardiac muscles the specially m. — epicardium • Septum interatrial septum ----Oval fossa interventricular septum ----Membranous part ...
CARDIAC EXAMINATION MINI-QUIZ 1. Sitting bolt upright, your
CARDIAC EXAMINATION MINI-QUIZ 1. Sitting bolt upright, your

... Aortic or RSB: right 2nd intercostal space (just under and right of angle of Louis) Pulmonic or LUSB: left second intercostal space, just left of sternum Tricuspid or LLSB: left fourth intercostal space Mitral or Apex: 5th intercostal space in midclavicular line Optional: left 3rd intercostal space ...
Cardiac Disease in Pregnancy
Cardiac Disease in Pregnancy

... – Physiologic increase in HR allows less time for regurgitant backflow ...
Chapter 8
Chapter 8

... passively with blood through the open AV valves. The semilunar valves are closed, and the atria remain relaxed. © 2014 Pearson Education, Inc. ...
anomalous pulmonary venous return with stenosis in
anomalous pulmonary venous return with stenosis in

... transformed into the right sinus venosus, from which the right vena cava superior is formed (R-SVC) and the vena azygos, and the left-hand side evolves into the left sinus venosus, from which the left vena cava superior and coronary sinus are formed, and from the umbilical and vitilline system the i ...
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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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