The Heart and Lungs at Work
... The sinus node generates an electrical charge called an action potential. The action potential causes the muscle walls of the heart to contract. This action potential travels through the two atria and the two ventricles via the a-v node and the Purkinje fibers. ...
... The sinus node generates an electrical charge called an action potential. The action potential causes the muscle walls of the heart to contract. This action potential travels through the two atria and the two ventricles via the a-v node and the Purkinje fibers. ...
Complete atrioventricular block in an adult with congenitally
... relatively smooth. So, probability of dislodgment of pacing lead is high using passive fixation lead. In fact, epicardial lead used to be chosen for providing long-term stable lodgment of electrode. Screw fixation lead can overcome this instability. So, a screw fixation lead was chosen in a morpholo ...
... relatively smooth. So, probability of dislodgment of pacing lead is high using passive fixation lead. In fact, epicardial lead used to be chosen for providing long-term stable lodgment of electrode. Screw fixation lead can overcome this instability. So, a screw fixation lead was chosen in a morpholo ...
Heart Anatomy
... Pulmonary Valve The pulmonary valve separates the right ventricle from the pulmonary artery. As the ventricles contract, it opens to allow the de-oxygenated blood collected in the right ventricle to flow to the lungs. It closes as the ventricles relax, preventing blood from returning to the heart. ...
... Pulmonary Valve The pulmonary valve separates the right ventricle from the pulmonary artery. As the ventricles contract, it opens to allow the de-oxygenated blood collected in the right ventricle to flow to the lungs. It closes as the ventricles relax, preventing blood from returning to the heart. ...
When Oxygen Goes Bad or How Not to Kill a Small Child with O2
... Our Clues for Caution The Cath Report If a pt has a complex cardiac lesion, they have probably either had an echocardiogram or gone to the cath lab The cath report will describe systemic and pulmonary resistences in Woods units, and even give you the Qp:Qs ...
... Our Clues for Caution The Cath Report If a pt has a complex cardiac lesion, they have probably either had an echocardiogram or gone to the cath lab The cath report will describe systemic and pulmonary resistences in Woods units, and even give you the Qp:Qs ...
Circulatory System
... Left Heart Oxygenated blood flows from lungs via pulmonary veins lt. atrium mitral valve left ventricle aortic semilunar valve aorta general circulation (to deliver O2 ) ...
... Left Heart Oxygenated blood flows from lungs via pulmonary veins lt. atrium mitral valve left ventricle aortic semilunar valve aorta general circulation (to deliver O2 ) ...
Aortopulmonary window- A rare presentation in
... the separation of the great vessels, which explains anomalous position of the coronary arteries. The associated cardiovascular conditions seen in our case are hypoplastic right pulmonary artery with hypoplasia of right lung and relatively higher origin of left coronary artery. Recently echocardiogra ...
... the separation of the great vessels, which explains anomalous position of the coronary arteries. The associated cardiovascular conditions seen in our case are hypoplastic right pulmonary artery with hypoplasia of right lung and relatively higher origin of left coronary artery. Recently echocardiogra ...
1. RIGHT CORONARY 2. LEFT ANTERIOR DESCENDING 3. LEFT
... Pulmonary Valve The pulmonary valve separates the right ventricle from the pulmonary artery. As the ventricles contract, it opens to allow the deoxygenated blood collected in the right ventricle to flow to the lungs. It closes as the ventricles relax, preventing blood from returning to ...
... Pulmonary Valve The pulmonary valve separates the right ventricle from the pulmonary artery. As the ventricles contract, it opens to allow the deoxygenated blood collected in the right ventricle to flow to the lungs. It closes as the ventricles relax, preventing blood from returning to ...
Mammalian Heart Dissection and Cardiovascular Slides lab
... chambers. The upper chambers are called atria. The lower chambers are called ventricles. Between each chamber, there are valves that prevent the backflow of blood. Blood is carried away from the heart by blood vessels called veins. Arteries and veins are connected by capillaries. Arteries have muscu ...
... chambers. The upper chambers are called atria. The lower chambers are called ventricles. Between each chamber, there are valves that prevent the backflow of blood. Blood is carried away from the heart by blood vessels called veins. Arteries and veins are connected by capillaries. Arteries have muscu ...
Exam 1 and Key
... A. isovolumetric ventricular relaxation---atrial contraction---ventricular filling--isovolumetric ventricular contraction---ventricular ejection B. atrial contraction---ventricular filling---isovolumetric ventricular contraction--ventricular ejection---isovolumetric ventricular relaxation C. ventric ...
... A. isovolumetric ventricular relaxation---atrial contraction---ventricular filling--isovolumetric ventricular contraction---ventricular ejection B. atrial contraction---ventricular filling---isovolumetric ventricular contraction--ventricular ejection---isovolumetric ventricular relaxation C. ventric ...
Circulatory System
... The 2 left images show the tricuspid and mitral valves (above) and aortic and mitral valves (below). http://www.heart-valve-surgery.com/heart-surgery-blog/2008/03/21/what-do-normal-heart-valves-look-like/ ...
... The 2 left images show the tricuspid and mitral valves (above) and aortic and mitral valves (below). http://www.heart-valve-surgery.com/heart-surgery-blog/2008/03/21/what-do-normal-heart-valves-look-like/ ...
How should I treat a perimembranous
... Michele Coceani et al describe a case of a symptomatic iatrogenic perimembranous ventricular septal defect (pmVSD) after surgical aortic valve replacement. In general, this complication is rare but not completely uncommon. In the present case, the occurrence of a pmVSD after implantation of a suture ...
... Michele Coceani et al describe a case of a symptomatic iatrogenic perimembranous ventricular septal defect (pmVSD) after surgical aortic valve replacement. In general, this complication is rare but not completely uncommon. In the present case, the occurrence of a pmVSD after implantation of a suture ...
Heart Notes Handout
... • ______________________________________________________ dump blood into the right atrium • From _______________________, through the _______________________, blood travels to the right ventricle • From the ________________________, blood leaves the heart as it passes through the ___________ _______ ...
... • ______________________________________________________ dump blood into the right atrium • From _______________________, through the _______________________, blood travels to the right ventricle • From the ________________________, blood leaves the heart as it passes through the ___________ _______ ...
CASE 9. Twisted heart with the left ventricle superiorly - IMIB-CHD
... displaced rightward (9A, 9B). The right and left relationship between the inlet and outlet of the right ventricle is reversed. The ventriculoarterial connection is concordant (9A-D). The right and left ventricular outflow tracts demonstrate an exaggerated spiraling or intertwined relationship. The ...
... displaced rightward (9A, 9B). The right and left relationship between the inlet and outlet of the right ventricle is reversed. The ventriculoarterial connection is concordant (9A-D). The right and left ventricular outflow tracts demonstrate an exaggerated spiraling or intertwined relationship. The ...
independent work of the students
... the femoral pulses), distended neck veins, peripheral cyanosis, edema, blood pressure, and respiratory status. Palpation. Palpation is useful in determining the size of the heart by feeling for the point of maximum impulse, which ordinarily corresponds to the apex. The apex is usually at a lower int ...
... the femoral pulses), distended neck veins, peripheral cyanosis, edema, blood pressure, and respiratory status. Palpation. Palpation is useful in determining the size of the heart by feeling for the point of maximum impulse, which ordinarily corresponds to the apex. The apex is usually at a lower int ...
Ventricular Septal Defect (VSD)
... Diagnosing VSD usually begins with a physical examination. Typically, a VSD is accompanied by a systolic heart murmur heard on both sides of the chest. The murmur is usually loudest on the right, but this can vary. With a very large defect, a murmur is not always heard. A palpable cardiac thrill is ...
... Diagnosing VSD usually begins with a physical examination. Typically, a VSD is accompanied by a systolic heart murmur heard on both sides of the chest. The murmur is usually loudest on the right, but this can vary. With a very large defect, a murmur is not always heard. A palpable cardiac thrill is ...
Hospital of Cirie
... We report a new technique to reproduce circumferential ablation of pulmonary veins (PV`s) with a new system (LocaLisa, Medtronic Inc.) for real-time 3D localization of intracardiac electrodes. This method uses an externally applied electrical field that is detected via standard catheter electrodes. ...
... We report a new technique to reproduce circumferential ablation of pulmonary veins (PV`s) with a new system (LocaLisa, Medtronic Inc.) for real-time 3D localization of intracardiac electrodes. This method uses an externally applied electrical field that is detected via standard catheter electrodes. ...
Biology Blood Circulation
... the types of blood vessels (arteries, capillaries, veins) and the connections formed between these elements. The images illustrating the positioning of the sinoatrial node and the functioning of the heart due to contractions generated by the SA node are analyzed. Finally, the teacher draws attention ...
... the types of blood vessels (arteries, capillaries, veins) and the connections formed between these elements. The images illustrating the positioning of the sinoatrial node and the functioning of the heart due to contractions generated by the SA node are analyzed. Finally, the teacher draws attention ...
CT Anatomy of the Heart
... • The tricuspid valve is contained within the anterior atrioventricular ring between the RA and RV. • Right Ventricle: resides immediately posterior to the sternum. The right ventricular surface of the interventricular septum is irregular. The septomarginal trabeculation has papillary muscles extend ...
... • The tricuspid valve is contained within the anterior atrioventricular ring between the RA and RV. • Right Ventricle: resides immediately posterior to the sternum. The right ventricular surface of the interventricular septum is irregular. The septomarginal trabeculation has papillary muscles extend ...
Cardiovascular system Embryology 2009 Blood and blood vessels
... Umbilical arteries – paired branches of dorsal aorta – to placenta (allantois) in embryonic stalk or later in umbilical cord It persist as internal iliac and superior vesical arteries (medial umbilical ligaments) ...
... Umbilical arteries – paired branches of dorsal aorta – to placenta (allantois) in embryonic stalk or later in umbilical cord It persist as internal iliac and superior vesical arteries (medial umbilical ligaments) ...
Biology 232
... the same until pressure is less than atrial pressure AV valves open – ventricular filling begins Blood Pressure – pressure in systemic circulation (pulmonary pressure is lower) systolic pressure – due to maximum left ventricular contraction diastolic pressure – during ventricular relaxation, pressur ...
... the same until pressure is less than atrial pressure AV valves open – ventricular filling begins Blood Pressure – pressure in systemic circulation (pulmonary pressure is lower) systolic pressure – due to maximum left ventricular contraction diastolic pressure – during ventricular relaxation, pressur ...
Cardiovascular system Embryology
... Umbilical arteries – paired branches of dorsal aorta – to placenta (allantois) in embryonic stalk or later in umbilical cord It persist as internal iliac and superior vesical arteries (medial umbilical ligaments) ...
... Umbilical arteries – paired branches of dorsal aorta – to placenta (allantois) in embryonic stalk or later in umbilical cord It persist as internal iliac and superior vesical arteries (medial umbilical ligaments) ...
CONGENITAL HEART DISEASE
... heart and of the pulmonary arteries. Pulmonary hypertension and shunt reversal (Eisenmenger’s syndrome) sometimes complicate atrial septal defect, but are less common and tend to occur later in life than with other types of left-to-right shunt. Clinical features: Most children are free of symptoms f ...
... heart and of the pulmonary arteries. Pulmonary hypertension and shunt reversal (Eisenmenger’s syndrome) sometimes complicate atrial septal defect, but are less common and tend to occur later in life than with other types of left-to-right shunt. Clinical features: Most children are free of symptoms f ...
Tetralogy of Fallot
... .Truncus arteriosus type I is characterized by origin of a single pulmonary trunk from the left lateral aspect of the common trunk, with branching of the left and right pulmonary arteries from the pulmonary trunk . .Truncus arteriosus type II is characterized by separate but proximate origins of ...
... .Truncus arteriosus type I is characterized by origin of a single pulmonary trunk from the left lateral aspect of the common trunk, with branching of the left and right pulmonary arteries from the pulmonary trunk . .Truncus arteriosus type II is characterized by separate but proximate origins of ...
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.