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... – Parasympathetic stimulation - a negative chronotropic factor • Supplied by vagus nerve, decreases heart rate, acetylcholine is secreted and hyperpolarizes the heart – Sympathetic stimulation - a positive chronotropic factor • Supplied by cardiac nerves. • Innervate the SA and AV nodes, and the atr ...
... – Parasympathetic stimulation - a negative chronotropic factor • Supplied by vagus nerve, decreases heart rate, acetylcholine is secreted and hyperpolarizes the heart – Sympathetic stimulation - a positive chronotropic factor • Supplied by cardiac nerves. • Innervate the SA and AV nodes, and the atr ...
Heart
... – Parasympathetic stimulation - a negative chronotropic factor • Supplied by vagus nerve, decreases heart rate, acetylcholine is secreted and hyperpolarizes the heart – Sympathetic stimulation - a positive chronotropic factor • Supplied by cardiac nerves. • Innervate the SA and AV nodes, and the atr ...
... – Parasympathetic stimulation - a negative chronotropic factor • Supplied by vagus nerve, decreases heart rate, acetylcholine is secreted and hyperpolarizes the heart – Sympathetic stimulation - a positive chronotropic factor • Supplied by cardiac nerves. • Innervate the SA and AV nodes, and the atr ...
fibrous skeleton insulates atria from ventricles
... Stroke volume: amount ejected, 70 ml at rest SV/EDV= ejection fraction, at rest ~ 54%, during vigorous exercise as high as 90%, diseased heart < ...
... Stroke volume: amount ejected, 70 ml at rest SV/EDV= ejection fraction, at rest ~ 54%, during vigorous exercise as high as 90%, diseased heart < ...
Cardiovascular Preparticipation Sports Screening Are we
... they have: Reduced sensitivity with false positive (FP) rates up to 90% LV remodeling and changes in ECGs in young patients are a potential source of false negative ...
... they have: Reduced sensitivity with false positive (FP) rates up to 90% LV remodeling and changes in ECGs in young patients are a potential source of false negative ...
Etiology
... Etiology and Pathophysiology of Cardiogenic Shock • Etiology: Cardiogenic shock can result from primary ventricular ischemia most commonly caused by acute MI and structural problems such as congestive heart failure, intracardiac tumor, acute myocarditits, Hemorrhage, and prolonged septic shock. Oth ...
... Etiology and Pathophysiology of Cardiogenic Shock • Etiology: Cardiogenic shock can result from primary ventricular ischemia most commonly caused by acute MI and structural problems such as congestive heart failure, intracardiac tumor, acute myocarditits, Hemorrhage, and prolonged septic shock. Oth ...
Heart Failure With Normal Ejection Fraction
... in patients of hypertensive LVH who are asymptomatic. 2. LV enlargement, LV hypertrophy (LVH) & increased intravascular volume LV enlargement is a key predictor of HF regardless of EF. However,patients with isolated DHF are often thought to have small LV volumes, but when the underlying cause is myo ...
... in patients of hypertensive LVH who are asymptomatic. 2. LV enlargement, LV hypertrophy (LVH) & increased intravascular volume LV enlargement is a key predictor of HF regardless of EF. However,patients with isolated DHF are often thought to have small LV volumes, but when the underlying cause is myo ...
Mitral Valve Surgery - HeartValveSurgery.com
... high pressure in the left atrium, can lead to atrial fibrillation. That’s why a plumbing problem can actually lead to the electrical problem that patients will feel. Adam Pick: Dr. Adams, when you’re performing surgery can you treat the mitral valve disorder and the atrial fibrillation in one proced ...
... high pressure in the left atrium, can lead to atrial fibrillation. That’s why a plumbing problem can actually lead to the electrical problem that patients will feel. Adam Pick: Dr. Adams, when you’re performing surgery can you treat the mitral valve disorder and the atrial fibrillation in one proced ...
The Heart
... intestine (and small, but mostly large) Large intestine leads to internal iliac vein (hypogastric) that connects to the inferior vena cava G. The Iliac arteries branches to supply blood ...
... intestine (and small, but mostly large) Large intestine leads to internal iliac vein (hypogastric) that connects to the inferior vena cava G. The Iliac arteries branches to supply blood ...
About this Book
... underlying physiologic mechanisms, and treatments for diseases of the heart. The busy bioengineer working on cardiac devices will find here the complete critical background needed to understand cardiac pacing, defibrillation, cardiac repair using stem cell therapy, robotics, less invasive cardiac su ...
... underlying physiologic mechanisms, and treatments for diseases of the heart. The busy bioengineer working on cardiac devices will find here the complete critical background needed to understand cardiac pacing, defibrillation, cardiac repair using stem cell therapy, robotics, less invasive cardiac su ...
Trans-Catheter Pulmonary Valve Implantation: Procedure
... discovered in patients with previous trans-annular patch (TAP) repair or in dilated native RVOTs. Patch-repaired pulmonary arteries may be less expandable (dependent on the implanted patch size) and the stent apposition area may be narrow. This is why anatomy after RVOT patch repair is often conside ...
... discovered in patients with previous trans-annular patch (TAP) repair or in dilated native RVOTs. Patch-repaired pulmonary arteries may be less expandable (dependent on the implanted patch size) and the stent apposition area may be narrow. This is why anatomy after RVOT patch repair is often conside ...
look - Weebly
... left, upper sternal border is where the closing sound of the pulmonic valve is heard the best. Since Martha's murmur is heard best in this area, it is most likely due to pulmonic valve stenosis. Since the pulmonic valve leaflets are not fully opening, there is resistance to the forward flow of blood ...
... left, upper sternal border is where the closing sound of the pulmonic valve is heard the best. Since Martha's murmur is heard best in this area, it is most likely due to pulmonic valve stenosis. Since the pulmonic valve leaflets are not fully opening, there is resistance to the forward flow of blood ...
Tetralogy of Fallot (TOF) - University of Maryland School of Medicine
... to get oxygen before they are born, they don’t need to send much blood to their lungs. After birth, the symptoms that the baby has will depend on how much obstruction there is to getting blood to the lungs. Since there is a large VSD, blood from the right and left ventricles can go to either side of ...
... to get oxygen before they are born, they don’t need to send much blood to their lungs. After birth, the symptoms that the baby has will depend on how much obstruction there is to getting blood to the lungs. Since there is a large VSD, blood from the right and left ventricles can go to either side of ...
Valvular Stenosis - Grand Valley State University
... Continuity equation valve areas: well validated in comparison with Gorlin formula Continuous wave Doppler needed d/t high velocities ...
... Continuity equation valve areas: well validated in comparison with Gorlin formula Continuous wave Doppler needed d/t high velocities ...
KEY CHAPTER 15 OBJECTIVES: CARDIOVASCULAR SYSTEM 1
... The heart is located in the mediastinum, behind the sternum, with the apex slightly to the left of center above the diaphragm. ...
... The heart is located in the mediastinum, behind the sternum, with the apex slightly to the left of center above the diaphragm. ...
Electrocardiogram findings
... Seen in conditions in which the heart is dilated or ischemic. It is also seen in healthy individuals. Right Axis Deviation, Left Axis Deviation, Clockwise Rotation, Counterclockwise Rotation, S1S2S3 Pattern ...
... Seen in conditions in which the heart is dilated or ischemic. It is also seen in healthy individuals. Right Axis Deviation, Left Axis Deviation, Clockwise Rotation, Counterclockwise Rotation, S1S2S3 Pattern ...
1 2 Heart, circulation and cardiac cycle
... the left atrium to the right atrium. 3b The blood in the right atrium of a person with a hole in the heart is different in its oxygen concentration from the blood in the right atrium of a healthy person. i. In what way is it different? ii. Explain what causes this difference. 3c The blood pressure i ...
... the left atrium to the right atrium. 3b The blood in the right atrium of a person with a hole in the heart is different in its oxygen concentration from the blood in the right atrium of a healthy person. i. In what way is it different? ii. Explain what causes this difference. 3c The blood pressure i ...
With right → left shunt
... Valve of sinus venosus (L): part of atrial septum Common atrium: rough part of right and left atria and the auricles Embryonic pulmonary vein: large part of the left atrial wall Septum primum: left side of the atrial septum Septum secundum: right side of the atrial septum Foramen secundum: dimple in ...
... Valve of sinus venosus (L): part of atrial septum Common atrium: rough part of right and left atria and the auricles Embryonic pulmonary vein: large part of the left atrial wall Septum primum: left side of the atrial septum Septum secundum: right side of the atrial septum Foramen secundum: dimple in ...
CRRM1.11 - Embryology of the Heart
... The primary septum forms between the developing atria from proliferating cells of the atrioventricular septum Highly oxygenated blood flowing from the placenta into the IVC enters the right atrium and flows against the primary septum creating a hole called the foramen ovale A secondary septum forms ...
... The primary septum forms between the developing atria from proliferating cells of the atrioventricular septum Highly oxygenated blood flowing from the placenta into the IVC enters the right atrium and flows against the primary septum creating a hole called the foramen ovale A secondary septum forms ...
One and a half ventricular repair as an alternative
... Since the original contributions of Billingsley et al. [1] to the one and a half ventricle concept in patients with hypoplastic right ventricle, the indications for this type of repair have expanded to cover a variety of anomalies that feature a functionally abnormal right ventricle that would not b ...
... Since the original contributions of Billingsley et al. [1] to the one and a half ventricle concept in patients with hypoplastic right ventricle, the indications for this type of repair have expanded to cover a variety of anomalies that feature a functionally abnormal right ventricle that would not b ...
Heart rhythm 101
... As a diligent LPN, you check her pulse and her blood pressure Her BP is 88/60, her pulse is 160 and feels thready. Her temperature is 99.9, her oxygen saturation is 91% but it is difficult to get a good ...
... As a diligent LPN, you check her pulse and her blood pressure Her BP is 88/60, her pulse is 160 and feels thready. Her temperature is 99.9, her oxygen saturation is 91% but it is difficult to get a good ...
Impact of isolated tricuspid valve repair on right ventricular
... Survival rate has been investigated with a mean clinical follow-up (FU) of 3.7 ± 2.3 years, whereas the mean echocardiographic FU was 2.9 ± 1.8 years. The clinical and functional status of patients showed a statistically significant improvement after the surgical repair in terms of New York Heart As ...
... Survival rate has been investigated with a mean clinical follow-up (FU) of 3.7 ± 2.3 years, whereas the mean echocardiographic FU was 2.9 ± 1.8 years. The clinical and functional status of patients showed a statistically significant improvement after the surgical repair in terms of New York Heart As ...
Tachycardia-Induced Cardiomyopathy
... How common is it? Tachycardia-induced cardiomyopathy can occur at any age. The incidence of tachycardia-induced cardiomyopathy is unknown. In selected studies of patients with atrial fibrillation, approximately 25% to 50% of those with LV dysfunction had some degree of tachycardiainduced cardiomyopa ...
... How common is it? Tachycardia-induced cardiomyopathy can occur at any age. The incidence of tachycardia-induced cardiomyopathy is unknown. In selected studies of patients with atrial fibrillation, approximately 25% to 50% of those with LV dysfunction had some degree of tachycardiainduced cardiomyopa ...
Pulmonic Stenosis Explained - New
... severity. This is done with the use of the ultrasound and measures the pressure gradient across the pulmonic valve. If the pressure gradient is less than 40 millimeters of mercury (mm of Hg) than no treatment is required. A gradient of 80mm of Hg or more is at risk of sudden death and therapy should ...
... severity. This is done with the use of the ultrasound and measures the pressure gradient across the pulmonic valve. If the pressure gradient is less than 40 millimeters of mercury (mm of Hg) than no treatment is required. A gradient of 80mm of Hg or more is at risk of sudden death and therapy should ...
Mitral insufficiency
Mitral insufficiency (MI), mitral regurgitation or mitral incompetence is a disorder of the heart in which the mitral valve does not close properly when the heart pumps out blood. It is the abnormal leaking of blood backwards from the left ventricle, through the mitral valve, into the left atrium, when the left ventricle contracts, i.e. there is regurgitation of blood back into the left atrium. MI is the most common form of valvular heart disease.