Cardiac Cycle - Just In Time Medicine
... Each cardiac cycle (heart beat) consists of ventricular diastole (relaxation), followed by ventricular systole (contraction). Atrial systole (atrial contraction) occurs during ventricular diastole. Atrial contraction is initiated by atrial depolarization, which is indicated by the P wave in the ECG. ...
... Each cardiac cycle (heart beat) consists of ventricular diastole (relaxation), followed by ventricular systole (contraction). Atrial systole (atrial contraction) occurs during ventricular diastole. Atrial contraction is initiated by atrial depolarization, which is indicated by the P wave in the ECG. ...
Diseases Of Circulatory System I00-I99
... Heart failure occurs when an abnormality of cardiac function results in the inability of the heart to pump blood at a rate commensurate with the body's needs or the ability to do so only from an abnormal filling pressure. This decrease in blood supply to body tissue results in unmet needs for oxygen ...
... Heart failure occurs when an abnormality of cardiac function results in the inability of the heart to pump blood at a rate commensurate with the body's needs or the ability to do so only from an abnormal filling pressure. This decrease in blood supply to body tissue results in unmet needs for oxygen ...
The valve of the inferior vena cava‖ . Br. Heart J., 1956, July, 18 (3)
... relationship of the great cardiac vein to the circumflex artery was observed in an otherwise normal cadaver heart. Vessels originated and terminated normally, but in their midcourse they were twisted around each other such that each made one complete loop around the other. This variation did not see ...
... relationship of the great cardiac vein to the circumflex artery was observed in an otherwise normal cadaver heart. Vessels originated and terminated normally, but in their midcourse they were twisted around each other such that each made one complete loop around the other. This variation did not see ...
Chapter_009
... Systole: (cardiac contraction) valves open, allowing ventricular ejection into arteries (pulmonary artery and aorta) Diastole: valves close preventing back flow of blood into ventricles ...
... Systole: (cardiac contraction) valves open, allowing ventricular ejection into arteries (pulmonary artery and aorta) Diastole: valves close preventing back flow of blood into ventricles ...
1 - Jordan University of Science and Technology
... 4. Identify papillary muscles and describe their locations and importance. 5. Describe of the atrioventricular valves and their position and the attachment of the cusps to papillary muscles and their functional importance. 6. Explain the position of each cusp in the right and left ventricles. 7. Des ...
... 4. Identify papillary muscles and describe their locations and importance. 5. Describe of the atrioventricular valves and their position and the attachment of the cusps to papillary muscles and their functional importance. 6. Explain the position of each cusp in the right and left ventricles. 7. Des ...
ECG in STEMI - American Heart Association
... more contiguous leads (usually inferior or lateral or both) • ST morphology similar to pericarditis ...
... more contiguous leads (usually inferior or lateral or both) • ST morphology similar to pericarditis ...
Biventricular heart failure secondary to calcified
... to accommodate the blood proceeding from the venous return, being into a fixed space, delimited by the stiff pericardium. Kussmaul’s sign is also present in cases of severe right heart failure, especially in association with tricuspid regurgitation. Pulsus paradoxus is present when systolic pressure ...
... to accommodate the blood proceeding from the venous return, being into a fixed space, delimited by the stiff pericardium. Kussmaul’s sign is also present in cases of severe right heart failure, especially in association with tricuspid regurgitation. Pulsus paradoxus is present when systolic pressure ...
Hemodynamic and functional assessment of mechanical aortic
... by measuring the transvalvular Doppler gradient and aortic regurgitation. However, evaluation of disc excursion often is not possible with TTE or transesophageal echocardiography because of shadowing and artifact.1 Elevated transvalvular gradients can be caused by a highflow state because of a numbe ...
... by measuring the transvalvular Doppler gradient and aortic regurgitation. However, evaluation of disc excursion often is not possible with TTE or transesophageal echocardiography because of shadowing and artifact.1 Elevated transvalvular gradients can be caused by a highflow state because of a numbe ...
ID_3651_Internal medicine_Module4_ CM1_English_sem_12
... Readministration of a different fibrinolytic agent Administration of GP IIb/IIIa inhibitor Immediate coronary angiography and rescue PCI Symptomatic relief of angina and heart failure Medical therapy and PCI at a later date An 80-year old woman with chest discomfort for the last 15 hours and progres ...
... Readministration of a different fibrinolytic agent Administration of GP IIb/IIIa inhibitor Immediate coronary angiography and rescue PCI Symptomatic relief of angina and heart failure Medical therapy and PCI at a later date An 80-year old woman with chest discomfort for the last 15 hours and progres ...
Restoration of Regional Wall Motion by
... revascularization. Areas of asynergy may have pronounced influence on left ventricular fun~tion,4.~ and yet traditional hemodynamic techniques measure the integrated response of the left ventricle as though all segments made a uniform contribution to total function. Previous investigations show that ...
... revascularization. Areas of asynergy may have pronounced influence on left ventricular fun~tion,4.~ and yet traditional hemodynamic techniques measure the integrated response of the left ventricle as though all segments made a uniform contribution to total function. Previous investigations show that ...
Severe left anterior descending artery stenosis
... angioplasty with covered stent. Covered stent has been well-documented for the exclusion of various aneurysms, treatment in coronary artery rupture and treatment of coronary aneurysm.(8,9) The long-term outcome of patients treated with a covered stent for aneurysmal disease is not known. There are s ...
... angioplasty with covered stent. Covered stent has been well-documented for the exclusion of various aneurysms, treatment in coronary artery rupture and treatment of coronary aneurysm.(8,9) The long-term outcome of patients treated with a covered stent for aneurysmal disease is not known. There are s ...
LWW PPT Slide Template Master
... The development of fatty, fibrous patches (plaques) in the lining of arteries, causing narrowing of the lumen and hardening of the vessel wall. The most common form of arteriosclerosis (hardening of the arteries). The root ather/o means “porridge” or “gruel.” ...
... The development of fatty, fibrous patches (plaques) in the lining of arteries, causing narrowing of the lumen and hardening of the vessel wall. The most common form of arteriosclerosis (hardening of the arteries). The root ather/o means “porridge” or “gruel.” ...
Improved Regional Myocardial Blood Flow, Left Ventricular Assist
... injected in a volume of 1 ml through the left atrial catheter over 30 seconds, followed by 10 ml of normal saline. During the microsphere injection, arterial blood was continuously withdrawn from the ascending aorta for a period of 2 minutes with the use of a Harvard pump. After baseline control mea ...
... injected in a volume of 1 ml through the left atrial catheter over 30 seconds, followed by 10 ml of normal saline. During the microsphere injection, arterial blood was continuously withdrawn from the ascending aorta for a period of 2 minutes with the use of a Harvard pump. After baseline control mea ...
LETHAL CARDIAC ANAPHYLAXIS IN THE RABBIT
... of variable extent. Stimulation of the cut surfaces of the ventricles is sometimes feebly successful on, the left side, but only rarely on the right. The right ventricular muscle shows, as a rule, a peculiar soft, paper-like stiffness as it folds when the fluid blood is removed; its color is gray an ...
... of variable extent. Stimulation of the cut surfaces of the ventricles is sometimes feebly successful on, the left side, but only rarely on the right. The right ventricular muscle shows, as a rule, a peculiar soft, paper-like stiffness as it folds when the fluid blood is removed; its color is gray an ...
Transcatheter Heart Valve Procedures
... The mitral valve directs blood flow from the left atrium into the left ventricle. Mitral regurgitation (MR) occurs when the mitral valve does not close properly, allowing blood to flow backwards from the ventricle to the atrium. MR is sometimes referred to as mitral incompetence or mitral insufficie ...
... The mitral valve directs blood flow from the left atrium into the left ventricle. Mitral regurgitation (MR) occurs when the mitral valve does not close properly, allowing blood to flow backwards from the ventricle to the atrium. MR is sometimes referred to as mitral incompetence or mitral insufficie ...
Early trabeculation and closure of the interventricular foramen in
... The muscular part of the interventricular septum in human embryos begins to develop early in the 5th week (stages 11 and 12) [26]. In our study this part of the interventricular septum was well marked in embryos at stage 13. Genes Hand1 and Hand2 play an essential role in the formation of the interv ...
... The muscular part of the interventricular septum in human embryos begins to develop early in the 5th week (stages 11 and 12) [26]. In our study this part of the interventricular septum was well marked in embryos at stage 13. Genes Hand1 and Hand2 play an essential role in the formation of the interv ...
This educational slide module includes notes and diagrams of slides
... the most common causes of RV dysfunction. RV function is most commonly threatened by an increase in impedance to ejection (RV afterload -PVR). The thin RV free wall limits this ventricle’s ability to respond to acute changes in resistance (PVR). So in response to an acute increase in pressure or res ...
... the most common causes of RV dysfunction. RV function is most commonly threatened by an increase in impedance to ejection (RV afterload -PVR). The thin RV free wall limits this ventricle’s ability to respond to acute changes in resistance (PVR). So in response to an acute increase in pressure or res ...
PDF - Circulation
... In view of the high pulmonary resistances (ratio of pulmonary to systemic resistances equal to 0.78) this child was not considered a suitable candidate for corrective surgery. ...
... In view of the high pulmonary resistances (ratio of pulmonary to systemic resistances equal to 0.78) this child was not considered a suitable candidate for corrective surgery. ...
Congenital absence of pericardium revisited
... enlarged in approximately 50% of cases, which may be partially due to the slight rotation of the heart into the left chest [3, 11]. This coupled with the presence of a strong and displaced apical impulse, tends to give the impression of an enlarged heart on physical examination and on chest radiogra ...
... enlarged in approximately 50% of cases, which may be partially due to the slight rotation of the heart into the left chest [3, 11]. This coupled with the presence of a strong and displaced apical impulse, tends to give the impression of an enlarged heart on physical examination and on chest radiogra ...
Systolic Longitudinal Function of the Left Ventricle Assessed by
... Methods: In this study, 126 patients with HFNEF and diastolic dysfunction and 60 normal subjects on conventional echocardiography underwent STE evaluations, including LV end-diastolic and end-systolic dimensions; interventricular septal thickness; posterior wall thickness; LV volume; LV ejection fra ...
... Methods: In this study, 126 patients with HFNEF and diastolic dysfunction and 60 normal subjects on conventional echocardiography underwent STE evaluations, including LV end-diastolic and end-systolic dimensions; interventricular septal thickness; posterior wall thickness; LV volume; LV ejection fra ...
Electrocardiography for Healthcare Professionals Chapter 6: Atrial
... PR interval – cannot be identified QRS duration – 0.06-0.10 second ...
... PR interval – cannot be identified QRS duration – 0.06-0.10 second ...
Constrictive Pericarditis: A Case Study
... work-up a diagnosis of liver disease. As central diastolic pressures increase and symptoms of dyspnea, orthopnea, and occasionally platypnea become more prominent, clinicians can erroneously diagnose CHF. As seen with patient 1, failure to recognize the significance of elevations in jugular venous p ...
... work-up a diagnosis of liver disease. As central diastolic pressures increase and symptoms of dyspnea, orthopnea, and occasionally platypnea become more prominent, clinicians can erroneously diagnose CHF. As seen with patient 1, failure to recognize the significance of elevations in jugular venous p ...
Ch. 20
... • SL valves open with ventricular contraction – allow blood to flow into pulmonary trunk and aorta • SL valves close with ventricular relaxation – prevents blood from returning to ventricles, blood fills valve cusps, tightly closing the SL valves Principles of Human Anatomy and Physiology, 11e ...
... • SL valves open with ventricular contraction – allow blood to flow into pulmonary trunk and aorta • SL valves close with ventricular relaxation – prevents blood from returning to ventricles, blood fills valve cusps, tightly closing the SL valves Principles of Human Anatomy and Physiology, 11e ...
Lutembacher's syndrome
Lutembacher's syndrome is a form of congenital heart disease. Lutembacher's syndrome was first described by a French cardiologist by the name of Rene' Lutembacher (1884–1968) of Paris, France in 1916. Lutembacher syndrome is a rare disease that affects one of the chambers of the heart as well as a valve of the heart. Lutembacher's syndrome is known to affect females more often than males. Lutembacher is an extremely rare disease. Lutembacher's can affect children or adults; the person can either be born with the disorder or develop it later in life.Lutembacher affects more specifically the atria of the heart and the mitral or biscupid valve. The disorder itself is known more specifically as both congenital atrial septal defect (ASD) and acquired mitral stenosis (MS). Congenital (at birth) atrial septal defect refers to a hole being in the septum or wall that separates the two atria; this condition is usually seen in fetuses and infants. Mitral stenosis refers to mitral valve leaflets (or valve flaps) sticking to each other making the opening for blood to pass from the atrium to the ventricles very small. With the valve being so small, blood has difficulty passing through the left atrium into the left ventricle. There are several types of septal defects that may occur with Lutembacher's syndrome: ASD Ostium Secundum or ASD (Primium); Ostium Secundum is the most prevalent.Lutembacher is caused indirectly as the result of heart damage or disorders and not something that is necessarily infectious. Lutembacher's syndrome is caused by either birth defects where the heart fails to close all holes in the walls between the atria or from an episode of rheumatic fever where damage is done to the heart valves such as the mitral valve and resultant in an opening of heart wall between atria. With Lutembacher's syndrome, a fetus or infant is usually seen to have a hole in their heart wall (interatrial) separating their right and left atria. Normally during fetal development, blood bypasses the lungs and is oxygenated from the placenta. Blood passes from the umbilical cord and flows into the left atrium through an opening called the foramen ovale; the formaen ovale is a hole between the two atria. Once a baby is born and the lungs begin to fill with air and the blood flow of the heart changes, a tissue flap (somewhat like a trap door) called the septum primium closes the foramen ovale or hole between the two atria and becomes part of the atrial wall. The failure of the hole between the two atria to close after birth leads to a disorder called ASD primium. The most common problems with an opening found in the heart with Lutembacher's syndrome is Ostium Secundum. Ostium Secundum is a hole that is found within the flap of tissue (septum primium) that will eventually close the hole between the two atria after birth. With either type of ASD, ASD will usually cause the blood flow from the right atrium to skip going to the right ventricle and instead flow to the left atrium. If mitral stenosis (the hardening of flap of tissue known as a valve which opens and closes between the left atrium and ventricle to control blood flow) is also present, blood will flow into the right atrium through the hole between the atria wall instead of flowing into the left ventricle and systemic circulation. Eventually this leads to other problems such as the right ventricle failing and a reduced blood flow to the left ventricle.In addition to the ASD, acquired MS can be present either from an episode of rheumatic fever (the mother has or had rheumatic fever during the pregnancy) or the child being born with the disorder (congenital MS). With the combination of both ASD and MS, the heart can be under severe strain as it tries to move blood throughout the heart and lungs. To correct Lutembacher's syndrome, surgery is often done. There are several types of surgeries depending on the cause of Lutembacher's syndrome(ASD Primium or ASD Ostium Secundum with Mitral Stenosis): Suturing (stitching) or placing a patch of tissue (similar to skin grafting) over the hole to completely close the opening Reconstructing of the mitral and tricuspid valve while patching any holes in the heart Device closure of ASD (e.g. Amplatzer umbrella or CardioSEAL to seal the hole Percutaneous transcatheter therapy Transcatheter therapy of balloon valvuloplasty to correct MS↑ ↑ 2.0 2.1 2.2 2.3 2.4 ↑ 3.0 3.1 3.2 3.3 3.4 ↑ ↑ ↑ 6.0 6.1 6.2 6.3 ↑