Conducting Pathways of the Human Heart
... persists, and the views of the 19th century investigators though modified, have not been eclipsed by time. It may, therefore, be appropriate to preface thfs clinicopharmacological seminar on arrhythmias by a brief review of the cardiac conducting pathways whose existence is generally accepted today ...
... persists, and the views of the 19th century investigators though modified, have not been eclipsed by time. It may, therefore, be appropriate to preface thfs clinicopharmacological seminar on arrhythmias by a brief review of the cardiac conducting pathways whose existence is generally accepted today ...
BIOLOGY 2060 LECTURE NOTES
... a. 1st heart sound (LUB) = Caused by the shutting of the atrioventricular valves i. Occurs at the onset of ventricular contraction (i.e. end of ventricular relaxation). b. 2nd heart sound (DUP) = Caused by the shutting of the semilunar valves i. Occurs at the end of ventricular contraction ...
... a. 1st heart sound (LUB) = Caused by the shutting of the atrioventricular valves i. Occurs at the onset of ventricular contraction (i.e. end of ventricular relaxation). b. 2nd heart sound (DUP) = Caused by the shutting of the semilunar valves i. Occurs at the end of ventricular contraction ...
Physiology – Biology 219
... Understand the principles and practice of measuring arterial blood pressure. What is the name of the device used to measure blood pressure? What sounds or changes in sound are associated with the systolic pressure reading and with the diastolic pressure reading? What are normal values and units of b ...
... Understand the principles and practice of measuring arterial blood pressure. What is the name of the device used to measure blood pressure? What sounds or changes in sound are associated with the systolic pressure reading and with the diastolic pressure reading? What are normal values and units of b ...
tone during exercise. The normal straight line relationships between
... Investigations were carried out with the aid of a bicycle ergometer with the aim of studying changes in heart rate, stroke volume and cardiac sympathetic tone during exercise. The normal straight line relationships between work load, cardiac output, heart rate and oxygen uptake were compared with th ...
... Investigations were carried out with the aid of a bicycle ergometer with the aim of studying changes in heart rate, stroke volume and cardiac sympathetic tone during exercise. The normal straight line relationships between work load, cardiac output, heart rate and oxygen uptake were compared with th ...
SESSION 10: TRANSPORT SYSTEMS IN MAMMALS (HUMAN) 2
... A stroke is a disturbance in the brain function due to either a blockage in a blood vessel supplying the brain (80%) or the bleeding out by a ruptured blood vessel causing a haemorrhage (20%). An obstacle in the brain’s blood supply prevents oxygen and nutrients from being carried to the nerve cells ...
... A stroke is a disturbance in the brain function due to either a blockage in a blood vessel supplying the brain (80%) or the bleeding out by a ruptured blood vessel causing a haemorrhage (20%). An obstacle in the brain’s blood supply prevents oxygen and nutrients from being carried to the nerve cells ...
Pulmonary artery ruPture in a Patient receiving artificial heart exPlant
... complications2,3. PA rupture is probably the most disastrous complication associated with the use of PAC. The incidence of PA rupture is 0.01-0.47%, but the mortality rate is 50-75%4. The initial presentation may be massive pulmonary hemorrhage, subtle cough with minimal hemoptysis, or may even be t ...
... complications2,3. PA rupture is probably the most disastrous complication associated with the use of PAC. The incidence of PA rupture is 0.01-0.47%, but the mortality rate is 50-75%4. The initial presentation may be massive pulmonary hemorrhage, subtle cough with minimal hemoptysis, or may even be t ...
Heart Presentation
... The arteries of the heart carry blood away from the heart. The veins of the heart carry blood to the heart. The largest artery in the body is the aorta. ...
... The arteries of the heart carry blood away from the heart. The veins of the heart carry blood to the heart. The largest artery in the body is the aorta. ...
6 Human physiology
... muscular tube with an opening at both ends (mouth and anus). Mechanical digestion is brought about by the teeth and the churning actions of the gut wall. Chemical digestion is brought about by enzymes that are secreted onto the broken up food in particular regions of the gut, under carefully control ...
... muscular tube with an opening at both ends (mouth and anus). Mechanical digestion is brought about by the teeth and the churning actions of the gut wall. Chemical digestion is brought about by enzymes that are secreted onto the broken up food in particular regions of the gut, under carefully control ...
Heart and blood ppt
... 6.2.U9 The sinoatrial node acts as a pacemaker. AND 6.2.U10 The sinoatrial node sends out an electrical signal that stimulates contraction as it is propagated through the walls of the atria and then the walls of the ventricles. ...
... 6.2.U9 The sinoatrial node acts as a pacemaker. AND 6.2.U10 The sinoatrial node sends out an electrical signal that stimulates contraction as it is propagated through the walls of the atria and then the walls of the ventricles. ...
ACHA Q and A: Congenitally Corrected Transposition of the Great
... age with no or few problems. On the other hand, some babies born with CCTGA die in infancy. Many people diagnosed with CCTGA have no or few symptoms as children and young adults, but develop more problems as they age. There are three common problem areas: • Heart rhythm problems Almost everyone born ...
... age with no or few problems. On the other hand, some babies born with CCTGA die in infancy. Many people diagnosed with CCTGA have no or few symptoms as children and young adults, but develop more problems as they age. There are three common problem areas: • Heart rhythm problems Almost everyone born ...
Class: XI Subject: Biology Topic: Body fluids and circulation No. of
... Allergy occurs when the antigen and antibody reaction takes place inside the tissues. The agent, which causes the allergy is known as an allergen. Allergens trigger the formation of antibodies in the body. If the body’s immune system is weak, then enough antibodies are no produced. This makes the bo ...
... Allergy occurs when the antigen and antibody reaction takes place inside the tissues. The agent, which causes the allergy is known as an allergen. Allergens trigger the formation of antibodies in the body. If the body’s immune system is weak, then enough antibodies are no produced. This makes the bo ...
Circulatory Systems
... • Atrioventricular (AV) valve – between atrium & ventricle – keeps blood from flowing back into atria when ventricles contract ...
... • Atrioventricular (AV) valve – between atrium & ventricle – keeps blood from flowing back into atria when ventricles contract ...
First-Ever Presentation on Abiomed`s Impella® Quality (IQ
... FDA medical device reporting ("MDR") database, which draws from seven years of U.S. experience with Impella. In addition, the Company also provided a benchmark analysis of Impella patients in the real-world Impella cVAD registry vs. these same patient groups in the Abiomed AB5000/BVS 5000 Registry. ...
... FDA medical device reporting ("MDR") database, which draws from seven years of U.S. experience with Impella. In addition, the Company also provided a benchmark analysis of Impella patients in the real-world Impella cVAD registry vs. these same patient groups in the Abiomed AB5000/BVS 5000 Registry. ...
Otavio_Renato_BRIDGEACS
... Multifaceted Quality Improvement Intervention Algorithm for risk stratification and recommendation of evidence-based therapies for each risk category “Chest Pain” Label ...
... Multifaceted Quality Improvement Intervention Algorithm for risk stratification and recommendation of evidence-based therapies for each risk category “Chest Pain” Label ...
The main features of the animal circulatory system are
... • In an open circulatory system, as seen in arthropods, a heart circulates fluid within an open body cavity. • In a closed circulatory system, as seen in vertebrates, a heart circulates blood in a closed loop made up of blood vessels. • Three types of blood vessels: • Arteries move blood away from t ...
... • In an open circulatory system, as seen in arthropods, a heart circulates fluid within an open body cavity. • In a closed circulatory system, as seen in vertebrates, a heart circulates blood in a closed loop made up of blood vessels. • Three types of blood vessels: • Arteries move blood away from t ...
Pressure Wave Reflection
... — Conclusion: Increasing arterial stiffness independently increases the risk of all three major cardiovascular ...
... — Conclusion: Increasing arterial stiffness independently increases the risk of all three major cardiovascular ...
D7-1 UNIT 7. DISSECTION: HEART STRUCTURES TO IDENTIFY
... in the anterior and posterior walls of the atrium. The posterior wall is smooth; this is the sinus venarum and is continuous with the two venae cava. The anterior wall is rough with the pectinate muscles, which contribute to its strength in contraction. The two walls are joined at a ridge, the cris ...
... in the anterior and posterior walls of the atrium. The posterior wall is smooth; this is the sinus venarum and is continuous with the two venae cava. The anterior wall is rough with the pectinate muscles, which contribute to its strength in contraction. The two walls are joined at a ridge, the cris ...
SIGN 94: Cardiac arrhythmias in coronary heart disease
... witnessed cardiac arrests and immediately following two minutes of CPR for unwitnessed out-of-hospital cardiac arrests. (B) ...
... witnessed cardiac arrests and immediately following two minutes of CPR for unwitnessed out-of-hospital cardiac arrests. (B) ...
Cardiovascular_System - walker2015
... Diastolic—pressure when ventricles relax Write systolic pressure first and diastolic last (120/80 mm Hg) mm Hg (millimeters of mercury) – unit of pressure ...
... Diastolic—pressure when ventricles relax Write systolic pressure first and diastolic last (120/80 mm Hg) mm Hg (millimeters of mercury) – unit of pressure ...
Cardiovascular System
... 1. Purkinje fibers join to form internodal pathways. 2. Transmission of impulses and subsequent depolarization is facilitated by intercalated discs interposed between muscle fibers. 3. Impulse conduction by internodal pathways is received by the AV node, which is located at a point between the atria ...
... 1. Purkinje fibers join to form internodal pathways. 2. Transmission of impulses and subsequent depolarization is facilitated by intercalated discs interposed between muscle fibers. 3. Impulse conduction by internodal pathways is received by the AV node, which is located at a point between the atria ...
General Medical Officer (GMO) Manual: Clinical Section
... almost indistinguishable from PSVT, and so treatment should be followed as described as noted in paragraph (c). WPW may also precipitate atrial fibrillation, often with very rapid ventricular responses (see below). Patients with WPW should not be treated with maintenance dose verapamil or digoxin, r ...
... almost indistinguishable from PSVT, and so treatment should be followed as described as noted in paragraph (c). WPW may also precipitate atrial fibrillation, often with very rapid ventricular responses (see below). Patients with WPW should not be treated with maintenance dose verapamil or digoxin, r ...
Arrhythmias - The Brookside Associates
... almost indistinguishable from PSVT, and so treatment should be followed as described as noted in paragraph (c). WPW may also precipitate atrial fibrillation, often with very rapid ventricular responses (see below). Patients with WPW should not be treated with maintenance dose verapamil or digoxin, r ...
... almost indistinguishable from PSVT, and so treatment should be followed as described as noted in paragraph (c). WPW may also precipitate atrial fibrillation, often with very rapid ventricular responses (see below). Patients with WPW should not be treated with maintenance dose verapamil or digoxin, r ...
Myocardial infarction
Myocardial infarction (MI) or acute myocardial infarction (AMI), commonly known as a heart attack, occurs when blood flow stops to a part of the heart causing damage to the heart muscle. The most common symptom is chest pain or discomfort which may travel into the shoulder, arm, back, neck, or jaw. Often it is in the center or left side of the chest and lasts for more than a few minutes. The discomfort may occasionally feel like heartburn. Other symptoms may include shortness of breath, nausea, feeling faint, a cold sweat, or feeling tired. About 30% of people have atypical symptoms, with women more likely than men to present atypically. Among those over 75 years old, about 5% have had an MI with little or no history of symptoms. An MI may cause heart failure, an irregular heartbeat, or cardiac arrest.Most MIs occur due to coronary artery disease. Risk factors include high blood pressure, smoking, diabetes, lack of exercise, obesity, high blood cholesterol, poor diet, and excessive alcohol intake, among others. The mechanism of an MI often involves the rupture of an atherosclerotic plaque, leading to complete blockage of a coronary artery. MIs are less commonly caused by coronary artery spasms, which may be due to cocaine, significant emotional stress, and extreme cold, among others. A number of tests are useful to help with diagnosis, including electrocardiograms (ECGs), blood tests, and coronary angiography. An ECG may confirm an ST elevation MI if ST elevation is present. Commonly used blood tests include troponin and less often creatine kinase MB.Aspirin is an appropriate immediate treatment for a suspected MI. Nitroglycerin or opioids may be used to help with chest pain; however, they do not improve overall outcomes. Supplemental oxygen should be used in those with low oxygen levels or shortness of breath. In ST elevation MIs treatments which attempt to restore blood flow to the heart are typically recommended and include angioplasty, where the arteries are pushed open, or thrombolysis, where the blockage is removed using medications. People who have a non-ST elevation myocardial infarction (NSTEMI) are often managed with the blood thinner heparin, with the additional use angioplasty in those at high risk. In people with blockages of multiple coronary arteries and diabetes, bypass surgery (CABG) may be recommended rather than angioplasty. After an MI, lifestyle modifications, along with long term treatment with aspirin, beta blockers, and statins, are typically recommended.Worldwide, more than 3 million people have ST elevation MIs and 4 million have NSTEMIs each year. STEMIs occur about twice as often in men as women. About one million people have an MI each year in the United States. In the developed world the risk of death in those who have had an STEMI is about 10%. Rates of MI for a given age have decreased globally between 1990 and 2010.