5- Normal electrocardiogram
... 3-State the relationship between the direction of cardiac vector with the direction (-ve, +ve) and amplitude of an ECG waves. 4-Draw diagram indicting the axes of limb leads. The electrocardiogram: Because the body fluid is good conductors, algebraic sum of the action potentials of myocardial fibers ...
... 3-State the relationship between the direction of cardiac vector with the direction (-ve, +ve) and amplitude of an ECG waves. 4-Draw diagram indicting the axes of limb leads. The electrocardiogram: Because the body fluid is good conductors, algebraic sum of the action potentials of myocardial fibers ...
Pacing the Heart: The Evolution of the Pacemaker
... Is the sound “lub-Dub, lub-Dub, lub-Dub” familiar to you? Sure it is, for that‟s the natural sound of our very own hearts‟ valves opening and closing as they pump blood through our bodies to keep us supplied with vital oxygen. Our bodies contain about 5.6 Liters of blood, which are pumped at an aver ...
... Is the sound “lub-Dub, lub-Dub, lub-Dub” familiar to you? Sure it is, for that‟s the natural sound of our very own hearts‟ valves opening and closing as they pump blood through our bodies to keep us supplied with vital oxygen. Our bodies contain about 5.6 Liters of blood, which are pumped at an aver ...
Introductory Program
... These low frequency diastolic filling sounds are best heard with the bell of the stethoscope. The S3 is related to the acceleration and deceleration of blood during early passive filling of the ventricle. It can be normal in children and young adults (enhanced acceleration during filling) but may a ...
... These low frequency diastolic filling sounds are best heard with the bell of the stethoscope. The S3 is related to the acceleration and deceleration of blood during early passive filling of the ventricle. It can be normal in children and young adults (enhanced acceleration during filling) but may a ...
Original Article
... Previous literature of infants with structurally normal hearts surviving VF is sparse. The most common cause is long-QT syndrome, with most of these infants having significant QT prolongation.6–8 Among infants with normal resting ECGs, Brugada or Brugada-like syndrome seems to be the most common cau ...
... Previous literature of infants with structurally normal hearts surviving VF is sparse. The most common cause is long-QT syndrome, with most of these infants having significant QT prolongation.6–8 Among infants with normal resting ECGs, Brugada or Brugada-like syndrome seems to be the most common cau ...
blood/heart
... ˃ Synthesized in red marrow ˃ Not cells, composed of fragments of cells ˃ Necessary for the initiation of the blood clotting ...
... ˃ Synthesized in red marrow ˃ Not cells, composed of fragments of cells ˃ Necessary for the initiation of the blood clotting ...
Effect of Low-Energy Diets Differing in Fiber, Red Meat, and Coffee
... stopped 3 days before the assessments. During the intervention, participants received individually calculated daily diet sheets providing a median 1,198 kJ (interquartile range [IQR] 694 kJ) reduction in total daily energy intake and a constant macronutrient distribution (50% of energy from carbohyd ...
... stopped 3 days before the assessments. During the intervention, participants received individually calculated daily diet sheets providing a median 1,198 kJ (interquartile range [IQR] 694 kJ) reduction in total daily energy intake and a constant macronutrient distribution (50% of energy from carbohyd ...
Oxygen Supplementation and Cardiac
... Study objectives: Patients with COPD have an increased sympathetic modulation and reduced baroreflex sensitivity (BRS). Therefore, we studied the effects of breathing 31% supplemental oxygen (SuppO2) on autonomic modulation in a group of COPD patients. Design: We measured autonomic modulation before ...
... Study objectives: Patients with COPD have an increased sympathetic modulation and reduced baroreflex sensitivity (BRS). Therefore, we studied the effects of breathing 31% supplemental oxygen (SuppO2) on autonomic modulation in a group of COPD patients. Design: We measured autonomic modulation before ...
Certain Mechanical Peculiarities of the Human Cardiac
... to the peculiarities of the mechanical The human heart is irregular in shape, but nature of the human heart as a pump, for clarity and simplicity, it will be assumed the importance of these functional peculiarities in these discussions that the intraventricular is usually disregarded by those who di ...
... to the peculiarities of the mechanical The human heart is irregular in shape, but nature of the human heart as a pump, for clarity and simplicity, it will be assumed the importance of these functional peculiarities in these discussions that the intraventricular is usually disregarded by those who di ...
The Effects of Maternal Systemic Lupus Erythematosus on the
... the definition of lupus flares and how disease activity is assessed within each study (Mok and Wong 2001). Common characteristics exhibited during pregnancy may be misread as lupus flares. These lupus-like symptoms include palmar erythema (reddening of the palms), temporary facial blush, increase in ...
... the definition of lupus flares and how disease activity is assessed within each study (Mok and Wong 2001). Common characteristics exhibited during pregnancy may be misread as lupus flares. These lupus-like symptoms include palmar erythema (reddening of the palms), temporary facial blush, increase in ...
Right-Sided Implantation of a Cardiac Resynchronization Therapy
... efficacy of a right-sided implantable defibrillator system, taking into account the altered shock vector.7 For that reason a defibrillation test during implantation is imperative in order to exclude a particularly high threshold. A recent study showed that defibrillation thresholds and mortality wer ...
... efficacy of a right-sided implantable defibrillator system, taking into account the altered shock vector.7 For that reason a defibrillation test during implantation is imperative in order to exclude a particularly high threshold. A recent study showed that defibrillation thresholds and mortality wer ...
Safety of Asynchronous Ventricular Pacemaker - DGK
... which in some circumstances can result in circus movement excitations. Pre-conditions are, however, the occurrence of unidirectional pathway blocks and a sufficient conduction delay. In particular, patients with prior myocardial infarction, reduced left ventricular function and frequent spontaneous ...
... which in some circumstances can result in circus movement excitations. Pre-conditions are, however, the occurrence of unidirectional pathway blocks and a sufficient conduction delay. In particular, patients with prior myocardial infarction, reduced left ventricular function and frequent spontaneous ...
Circulatory and Gas Exchange Systems
... Leading causes of death in the USA (~ 1 million people each yr) Hypertension (high blood pressure), often caused by constriction of the arteries and arterioles, can strain the heart Hypertension often results from plaque buildup ...
... Leading causes of death in the USA (~ 1 million people each yr) Hypertension (high blood pressure), often caused by constriction of the arteries and arterioles, can strain the heart Hypertension often results from plaque buildup ...
1/2014 - Repatriation Medical Authority
... operational service under the VEA; peacekeeping service under the VEA; hazardous service under the VEA; British nuclear test defence service under the VEA; warlike service under the MRCA; or non-warlike service under the MRCA; ...
... operational service under the VEA; peacekeeping service under the VEA; hazardous service under the VEA; British nuclear test defence service under the VEA; warlike service under the MRCA; or non-warlike service under the MRCA; ...
Ectopic Fat Depots and Cardiovascular Disease
... infiltration of the adipose tissue by macrophages and upregulation of inflammatory adipokines.27 Consistent with this finding, epicardial fat harvested at the time of coronary artery bypass surgery was found to have higher levels of proinflammatory mediators in comparison with subcutaneous fat.29 Po ...
... infiltration of the adipose tissue by macrophages and upregulation of inflammatory adipokines.27 Consistent with this finding, epicardial fat harvested at the time of coronary artery bypass surgery was found to have higher levels of proinflammatory mediators in comparison with subcutaneous fat.29 Po ...
The Cardiovascular System: The Heart
... during diastole ESV = amount of blood remaining in a ventricle after contraction ...
... during diastole ESV = amount of blood remaining in a ventricle after contraction ...
CorePace #5 - Pacemaker Basics
... accompanying leads should not receive diathermy treatment. The interaction between the implant and diathermy can cause tissue damage, fibrillation, or damage to the device components, which could result in serious injury, loss of therapy, or the need to reprogram or replace the device. • For the Sel ...
... accompanying leads should not receive diathermy treatment. The interaction between the implant and diathermy can cause tissue damage, fibrillation, or damage to the device components, which could result in serious injury, loss of therapy, or the need to reprogram or replace the device. • For the Sel ...
CARDIAC PROPERTIES LECTURE – 4
... quickly from -60mV to -40mV [increases the slope of Prepotential] and when it reaches the threshold level, AP starts. ...
... quickly from -60mV to -40mV [increases the slope of Prepotential] and when it reaches the threshold level, AP starts. ...
PDF - Cardio
... the dynamic pacing protocol yielded significant differences in restitution kinetics between patients with and patients without structural heart disease, but no significant difference was observed using the S2 pacing protocol. The authors speculated that the dynamic protocol may improve the predictiv ...
... the dynamic pacing protocol yielded significant differences in restitution kinetics between patients with and patients without structural heart disease, but no significant difference was observed using the S2 pacing protocol. The authors speculated that the dynamic protocol may improve the predictiv ...
Palpitations Arrhythmia from a GP Perspective
... How should I assess someone who has palpitations? ...
... How should I assess someone who has palpitations? ...
Variable phenotype expression with a frameshift mutation of the
... performed because he had no coronary risk, lack of ST-T changes on ECG, and no asynergy or anomalous coronary artery origin on echocardiography. The patient recovered consciousness without any cerebral disorder after being rewarmed. He had no family history of sudden cardiac death. His 12-lead ECG a ...
... performed because he had no coronary risk, lack of ST-T changes on ECG, and no asynergy or anomalous coronary artery origin on echocardiography. The patient recovered consciousness without any cerebral disorder after being rewarmed. He had no family history of sudden cardiac death. His 12-lead ECG a ...
Heart muscle engineering: An update on cardiac muscle
... Nevertheless, stem cells seem to be the only meaningful cell source to allocate enough myocytes for clinically relevant cardiac muscle engineering in the future. One gram of adult myocardium contains an estimated number of 20– 40 million myocytes [47] and a typical myocardial infarction that induces ...
... Nevertheless, stem cells seem to be the only meaningful cell source to allocate enough myocytes for clinically relevant cardiac muscle engineering in the future. One gram of adult myocardium contains an estimated number of 20– 40 million myocytes [47] and a typical myocardial infarction that induces ...
Unit 23.1: The Circulatory System
... contains many dissolved substances and blood cells. Types of blood cells in plasma include red blood cells, white blood cells, and platelets (see Figure below). Cells in blood include red blood cells, white blood cells, and platelets. • The trillions of red blood cells in blood plasma carry oxygen. ...
... contains many dissolved substances and blood cells. Types of blood cells in plasma include red blood cells, white blood cells, and platelets (see Figure below). Cells in blood include red blood cells, white blood cells, and platelets. • The trillions of red blood cells in blood plasma carry oxygen. ...
Returning to Work after Myocardial Infarction
... (CR) program is to support the patient in returning to work: strong economic and quality of life arguments exist. It has been stated that patients after an acute myocardial infarction (MI) without complications such as left ventricular dysfunction or exercise-induced myocardial ischemia may safely r ...
... (CR) program is to support the patient in returning to work: strong economic and quality of life arguments exist. It has been stated that patients after an acute myocardial infarction (MI) without complications such as left ventricular dysfunction or exercise-induced myocardial ischemia may safely r ...
Pacific Coast Society of Orthodontists
... Diphenhydramine is sedating: do not drive Monitor: Breathing/Blood pressure ½ - 1 hour Antihistamine (eg. Benadryl) will not stop anaphylaxis! Harrison’s Principles of Internal Medicine 15th ed, 2002 ...
... Diphenhydramine is sedating: do not drive Monitor: Breathing/Blood pressure ½ - 1 hour Antihistamine (eg. Benadryl) will not stop anaphylaxis! Harrison’s Principles of Internal Medicine 15th ed, 2002 ...
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.