3-cardiac-cycle-1 - INAYA Medical College
... When ventricles begin to relax ,the AV valves close and the semilunar valves remain open. As the intra ventricular pressure decreases below the pressure in the aorta and pulmonary artery ,the blood tries to come back into the ventricles, This is prevented by closure of semilunar valve which produces ...
... When ventricles begin to relax ,the AV valves close and the semilunar valves remain open. As the intra ventricular pressure decreases below the pressure in the aorta and pulmonary artery ,the blood tries to come back into the ventricles, This is prevented by closure of semilunar valve which produces ...
Cardio II
... 3. In cardiac muscle explain the role in excitation-contraction coupling of: a. T-tubules - Extracellular calcium will enter the myocyte via the T-tubules b. Ryanodine receptor - The SR Calcium release channel c. L-type Ca++ channel (dihydropyridine receptor) - Voltage-gated Ca channel on the T-tubu ...
... 3. In cardiac muscle explain the role in excitation-contraction coupling of: a. T-tubules - Extracellular calcium will enter the myocyte via the T-tubules b. Ryanodine receptor - The SR Calcium release channel c. L-type Ca++ channel (dihydropyridine receptor) - Voltage-gated Ca channel on the T-tubu ...
Title: Physiology of the cardiovascular system /Heart and Circulation/
... (pulmonary trunk and aorta) to the ventricles c. Atrioventricular valves ( mitral and tricuspid ) prevent backflow of blood from ventricles to atria. d. The opening and closing of the heart valves is the result of pressure gradient between two sides of the valve cusps. e. Heart sounds result from th ...
... (pulmonary trunk and aorta) to the ventricles c. Atrioventricular valves ( mitral and tricuspid ) prevent backflow of blood from ventricles to atria. d. The opening and closing of the heart valves is the result of pressure gradient between two sides of the valve cusps. e. Heart sounds result from th ...
Slide 1 - AccessMedicine
... Sinus rhythm with ventricular bigeminy due to digitalis toxicity. Ventricular premature complexes follow each sinus-conducted QRS at a fixed coupling interval. ST-segment depression and T wave inversion in the sinus-conducted beats is seen in V6; however, since each sinus-conducted beat is a postext ...
... Sinus rhythm with ventricular bigeminy due to digitalis toxicity. Ventricular premature complexes follow each sinus-conducted QRS at a fixed coupling interval. ST-segment depression and T wave inversion in the sinus-conducted beats is seen in V6; however, since each sinus-conducted beat is a postext ...
The Heart
... pick up oxygen, oxygen-rich blood flows from the left ventricle to the heart and other parts of the body. ...
... pick up oxygen, oxygen-rich blood flows from the left ventricle to the heart and other parts of the body. ...
Mitral Valve Dysplasia in Dogs - Veterinary Specialty Services
... Dogs with mild forms of MVD, such as those that exhibit no symptoms (discussed further below) and have only mild changes on their chest x-rays and echocardiogram, may not require any specific therapy. For those with moderate to severe forms of MVD based on symptoms or echocardiographic abnormalities ...
... Dogs with mild forms of MVD, such as those that exhibit no symptoms (discussed further below) and have only mild changes on their chest x-rays and echocardiogram, may not require any specific therapy. For those with moderate to severe forms of MVD based on symptoms or echocardiographic abnormalities ...
Heart - KingsfieldBiology
... ventricles. important delay of about 0.1s. Ventricles contract shortly after the atria, from the bottom up, squeezing blood upwards into the arteries. The blood can't go into the atria because of the ...
... ventricles. important delay of about 0.1s. Ventricles contract shortly after the atria, from the bottom up, squeezing blood upwards into the arteries. The blood can't go into the atria because of the ...
Cardiac System - My Illinois State
... heart valves, which are made up of endocardial tissue. • Endocardial damage can be either congenital or acquired. • The usual cause of acquired valvular dysfunction is inflammation of the endocardium secondary to acute rheumatic fever or infectious endicarditis. • In valvular stenosis, the valve ori ...
... heart valves, which are made up of endocardial tissue. • Endocardial damage can be either congenital or acquired. • The usual cause of acquired valvular dysfunction is inflammation of the endocardium secondary to acute rheumatic fever or infectious endicarditis. • In valvular stenosis, the valve ori ...
Marfan`s Syndrome
... connects the left atrium and left ventricle. Marfan's Syndrome (also known as arachnodactyly) is named for Dr. Antonin Marfan, who first described this condition in 1896. It is caused by a genetic defect involving the body's connective tissue and occurs in approximately 1 of every 10,000 people. ...
... connects the left atrium and left ventricle. Marfan's Syndrome (also known as arachnodactyly) is named for Dr. Antonin Marfan, who first described this condition in 1896. It is caused by a genetic defect involving the body's connective tissue and occurs in approximately 1 of every 10,000 people. ...
Heart - Cloudfront.net
... • AV bundle (Bundle of His) • bundle branches Purkinje fibers • apex and up- then ventricles contract ...
... • AV bundle (Bundle of His) • bundle branches Purkinje fibers • apex and up- then ventricles contract ...
Sudden Cardiac Arrest Forms (2)
... A Sudden Cardiac Arrest Information Sheet for Athletes and Parents/Guardians What is sudden cardiac arrest? Sudden cardiac arrest (SCA) is when the heart stops beating, suddenly and unexpectedly. When this happens blood stops flowing to the brain and other vital organs. SCA is NOT a heart attack. A ...
... A Sudden Cardiac Arrest Information Sheet for Athletes and Parents/Guardians What is sudden cardiac arrest? Sudden cardiac arrest (SCA) is when the heart stops beating, suddenly and unexpectedly. When this happens blood stops flowing to the brain and other vital organs. SCA is NOT a heart attack. A ...
Heart failure and anaesthesia
... used, having understood the pathophysiology of cardiac failure, there are clear haemodynamic goals for the perioperative period. These are aimed at preserving cardiac output and minimising myocardial work. 1. Preserving cardiac output: There are three factors that influence cardiac output. These are ...
... used, having understood the pathophysiology of cardiac failure, there are clear haemodynamic goals for the perioperative period. These are aimed at preserving cardiac output and minimising myocardial work. 1. Preserving cardiac output: There are three factors that influence cardiac output. These are ...
Overview of Human Anatomy and Physiology: Cardiac Cycle
... sufficient amount of blood to the rest of the body. If these conditions are severe enough, heart failure can result. When valve damage is very severe, surgery is required to replace the diseased valve. ...
... sufficient amount of blood to the rest of the body. If these conditions are severe enough, heart failure can result. When valve damage is very severe, surgery is required to replace the diseased valve. ...
Ignatavicius: Medical-Surgical Nursing, 7th Edition
... Chapter 35: Assessment of the Cardiovascular System Key Points - Print ...
... Chapter 35: Assessment of the Cardiovascular System Key Points - Print ...
Transposition of the great arteries associated with a - Heart
... shunt was performed when the child was 4 years old, with subsequent improvement in oxygen saturation and fall in haematocrit. Recatheterisation at 52 years confirmed the previous diagnoses. A systolic gradient of 41 mmHg was measured across the pulmonary outflow tract and the systemic oxygen saturat ...
... shunt was performed when the child was 4 years old, with subsequent improvement in oxygen saturation and fall in haematocrit. Recatheterisation at 52 years confirmed the previous diagnoses. A systolic gradient of 41 mmHg was measured across the pulmonary outflow tract and the systemic oxygen saturat ...
Pharmacologic Treatment of Chronic Systolic Heart Failure
... Pharmacologic Treatment of Chronic Systolic Heart Failure John N. Hamaty D.O. FACC, FACOI ...
... Pharmacologic Treatment of Chronic Systolic Heart Failure John N. Hamaty D.O. FACC, FACOI ...
The normal ECG Cardiac cycle and cardiac sounds/ Pressure
... Regulation of conduction Regulation of pacemaker activity Cardiac cycle and cardiac sounds/ Pressure changes in atria and ventricles Atrial systole Isovolumetric ventricular contraction Ventricular Ejection Isovolumetric ventricular relaxation Ventricular filling Wiggers diagram - ECG - Heart sounds ...
... Regulation of conduction Regulation of pacemaker activity Cardiac cycle and cardiac sounds/ Pressure changes in atria and ventricles Atrial systole Isovolumetric ventricular contraction Ventricular Ejection Isovolumetric ventricular relaxation Ventricular filling Wiggers diagram - ECG - Heart sounds ...
CARDIAC EXAMINATION MINI-QUIZ 1. Sitting bolt upright, your
... S2: Aortic and pulmonic valves (semilunar) closing Loudest at base (top of heart is base) Usually splits with inspiration; this is audible only in pulmonic area Combines sounds of closing Aortic (A2) and Pulmonic (P2) valves Aortic is louder; can distinguish Pulmonic (P2) at LUSB - its area Pulmonic ...
... S2: Aortic and pulmonic valves (semilunar) closing Loudest at base (top of heart is base) Usually splits with inspiration; this is audible only in pulmonic area Combines sounds of closing Aortic (A2) and Pulmonic (P2) valves Aortic is louder; can distinguish Pulmonic (P2) at LUSB - its area Pulmonic ...
Sudden Cardiac Arrest Information Sheet
... How Common is Sudden Cardiac Arrest in the United States? As the leading cause of death in the U.S., there are more than 300,000 cardiac arrests outside hospitals each year, with nine out of 10 resulting in death. Thousands of sudden cardiac arrests occur among youth, as it is the #2 cause of death ...
... How Common is Sudden Cardiac Arrest in the United States? As the leading cause of death in the U.S., there are more than 300,000 cardiac arrests outside hospitals each year, with nine out of 10 resulting in death. Thousands of sudden cardiac arrests occur among youth, as it is the #2 cause of death ...
Atrial Arrhythmias Atrial fibrillation
... heart rates including; weakness, fatigue, dizziness, or palpitations. • Sinus tachycardia is often temporary, occurring under stresses from exercise, strong emotions, fever, dehydration, thyrotoxicosis, anemia and heart failure. • If necessary, beta-blockers may be used to slow the sinus rate, e.g. ...
... heart rates including; weakness, fatigue, dizziness, or palpitations. • Sinus tachycardia is often temporary, occurring under stresses from exercise, strong emotions, fever, dehydration, thyrotoxicosis, anemia and heart failure. • If necessary, beta-blockers may be used to slow the sinus rate, e.g. ...
Unstable Angina and Non–ST Elevation Myocardial Infarction
... A2:Aspirin use within the past 7 days; Age over 65 T: Two or more episodes of CP within 2 hours ...
... A2:Aspirin use within the past 7 days; Age over 65 T: Two or more episodes of CP within 2 hours ...
3 fetal chest and heart
... Ebstein’s Anomaly • Septal and posterior leaflets of tricuspid valve prolapse and are integrated into RV wall • Atrialisation of RV • Large RA due to massive regurg • Maternal lithium is a risk factor ...
... Ebstein’s Anomaly • Septal and posterior leaflets of tricuspid valve prolapse and are integrated into RV wall • Atrialisation of RV • Large RA due to massive regurg • Maternal lithium is a risk factor ...
Heart Quiz Revamp
... a. right atrium, tricuspid valve, right ventricle, pulmonary semilunar valve b. pulmonary semilunar valve, right atrium, tricuspid valve, right ventricle c. right atrium, bicuspid valve, right ventricle, pulmonary semilunar valve d. right atrium, pulmonary semilunar valve, right ventricle, tricuspid ...
... a. right atrium, tricuspid valve, right ventricle, pulmonary semilunar valve b. pulmonary semilunar valve, right atrium, tricuspid valve, right ventricle c. right atrium, bicuspid valve, right ventricle, pulmonary semilunar valve d. right atrium, pulmonary semilunar valve, right ventricle, tricuspid ...
Hypertrophic cardiomyopathy
Hypertrophic cardiomyopathy (HCM) is a primary disease of the myocardium (the muscle of the heart) in which a portion of the myocardium is hypertrophied (thickened) without any obvious cause, creating functional impairment of the cardiac muscle. It is a leading cause of sudden cardiac death in young athletes.The occurrence of hypertrophic cardiomyopathy is a significant cause of sudden unexpected cardiac death in any age group and as a cause of disabling cardiac symptoms. Younger people are likely to have a more severe form of hypertrophic cardiomyopathy.HCM is frequently asymptomatic until sudden cardiac death, and for this reason some suggest routinely screening certain populations for this disease.A cardiomyopathy is a disease that affects the muscle of the heart. With HCM, the myocytes (cardiac contractile cells) in the heart increase in size, which results in the thickening of the heart muscle. In addition, the normal alignment of muscle cells is disrupted, a phenomenon known as myocardial disarray. HCM also causes disruptions of the electrical functions of the heart. HCM is most commonly due to a mutation in one of nine sarcomeric genes that results in a mutated protein in the sarcomere, the primary component of the myocyte (the muscle cell of the heart). These are predominantly single-point missense mutations in the genes for beta-myosin heavy chain (MHC), myosin-binding protein C, cardiac troponinT, or tropomyosin. These mutations cause myofibril and myocyte structural abnormalities and possible deficiencies in force generation. Not to be confused with dilated cardiomyopathy or any other cardiomyopathy.While most literature so far focuses on European, American, and Japanese populations, HCM appears in all ethnic groups. The prevalence of HCM is about 0.2% to 0.5% of the general population.