No Slide Title
... Aims • Introduction to the heart. • Heart contraction and electrical conduction. ...
... Aims • Introduction to the heart. • Heart contraction and electrical conduction. ...
danny smith heart model
... 5 quarts per minute and 300 quarts per hour. These amounts are greatly increased during exercise. In a lifetime of 70 years, the heart would beat over 2Y2billion times and would pump over 50 million gallons of blood. If the heart were to stop for even a short time, irreversible changes would occur a ...
... 5 quarts per minute and 300 quarts per hour. These amounts are greatly increased during exercise. In a lifetime of 70 years, the heart would beat over 2Y2billion times and would pump over 50 million gallons of blood. If the heart were to stop for even a short time, irreversible changes would occur a ...
Arrhythmia - PACT
... Single-lead monitoring may make detection of ECG components (such as the P wave) difficult if axis/rhythm alters Single-lead monitoring may not demonstrate changes in ST-segments in an (unmonitored) ischaemic zone Monitoring patients nursed in the prone position Arrhythmia detection software may lac ...
... Single-lead monitoring may make detection of ECG components (such as the P wave) difficult if axis/rhythm alters Single-lead monitoring may not demonstrate changes in ST-segments in an (unmonitored) ischaemic zone Monitoring patients nursed in the prone position Arrhythmia detection software may lac ...
Balloon Inflation
... • Examined the role of the IABP in anterior ST-segment elevation-acute coronary syndrome without cardiogenic shock • Multicenter randomized trial, including 337 patients, who were randomized in a 1:1 ratio to either IABP before PCI or PCI alone • There was no difference in the infarct size assessed ...
... • Examined the role of the IABP in anterior ST-segment elevation-acute coronary syndrome without cardiogenic shock • Multicenter randomized trial, including 337 patients, who were randomized in a 1:1 ratio to either IABP before PCI or PCI alone • There was no difference in the infarct size assessed ...
ACVIM Consensus Statement Guidelines for the
... causes clinical signs with routine daily activities or mild exercise. Class IV describes patients with heart disease that causes severe clinical signs even at rest. Functional classification systems share a common problem in that they are based on relatively subjective assessments of clinical signs ...
... causes clinical signs with routine daily activities or mild exercise. Class IV describes patients with heart disease that causes severe clinical signs even at rest. Functional classification systems share a common problem in that they are based on relatively subjective assessments of clinical signs ...
VeriCor, left ventricular end diastolic pressure
... composite score at a visit had a 2.5 times greater likelihood of a near-term event, and those with a lowrisk score had a 70% lower likelihood when compared to ones at intermediate risk. However, the impact of use of these results on clinical outcomes is not known.In a sub-analysis of 170 subjects fr ...
... composite score at a visit had a 2.5 times greater likelihood of a near-term event, and those with a lowrisk score had a 70% lower likelihood when compared to ones at intermediate risk. However, the impact of use of these results on clinical outcomes is not known.In a sub-analysis of 170 subjects fr ...
Role of Hypoxia in the Evolution and Development of
... reduces energy expenditure by limiting motility, feeding, and metabolism (70, 71) .This strategy of energy conservation in the setting of reduced O2 availability is used by worms and even some lower vertebrates that are termed “hypoxia tolerant.” This may be viewed as analogous to hibernation in mor ...
... reduces energy expenditure by limiting motility, feeding, and metabolism (70, 71) .This strategy of energy conservation in the setting of reduced O2 availability is used by worms and even some lower vertebrates that are termed “hypoxia tolerant.” This may be viewed as analogous to hibernation in mor ...
Antiarrythmic drugs
... Shortening of the repolarization period will ensure that QT prolongation does not occur These drug act selectively on diseased or ischemic tissue where they are thought to promote conduction block thereby interrupting reentry circuits ...
... Shortening of the repolarization period will ensure that QT prolongation does not occur These drug act selectively on diseased or ischemic tissue where they are thought to promote conduction block thereby interrupting reentry circuits ...
Print this article
... after accelerated ventricular response, there was spontaneous slowing of heart rate, with some evidence of atrial premature complexes (bold arrow), before the patient regained normal sinus rhythm (thin arrows indicate P waves) at a heart rate of 93 beats per minute. Adenosine was likely responsible ...
... after accelerated ventricular response, there was spontaneous slowing of heart rate, with some evidence of atrial premature complexes (bold arrow), before the patient regained normal sinus rhythm (thin arrows indicate P waves) at a heart rate of 93 beats per minute. Adenosine was likely responsible ...
Surgical Heart Valve Portfolio
... Warnings/Precautions/Adverse Events: Only physicians who have received proper training in valve repair should use this device. Adverse events can include: thromboembolic events, dehiscence, hemolysis, stenosis, residual incompetence, heart block, endocarditis, right ventricular outflow tract obstruc ...
... Warnings/Precautions/Adverse Events: Only physicians who have received proper training in valve repair should use this device. Adverse events can include: thromboembolic events, dehiscence, hemolysis, stenosis, residual incompetence, heart block, endocarditis, right ventricular outflow tract obstruc ...
introduction
... the fatty matter into the artery wall and stretch the artery open to increase the blood flow to the heart2. PTCA has been used as a treatment modality of coronary artery disease in case of 1/3 rd of patients3.Primary angioplasty may be the preferred approach in patients with extensive ...
... the fatty matter into the artery wall and stretch the artery open to increase the blood flow to the heart2. PTCA has been used as a treatment modality of coronary artery disease in case of 1/3 rd of patients3.Primary angioplasty may be the preferred approach in patients with extensive ...
End-Stage Heart Disease in the Elderly
... (stage C), and finally to the stage in which there are symptoms that are resistant to treatment (stage D).10 A high percentage of patients with HF die from cardiac causes, but very often the patient, their family or caretakers are not told the prognosis, nor is this done at the time of diagnosis or ...
... (stage C), and finally to the stage in which there are symptoms that are resistant to treatment (stage D).10 A high percentage of patients with HF die from cardiac causes, but very often the patient, their family or caretakers are not told the prognosis, nor is this done at the time of diagnosis or ...
Second degree AV block and severely impaired contractility in
... The heart is a major target organ for thyroid hormone action. Severe overt hypothyroidism can result in diastolic hypertension, lowered cardiac output, impaired left ventricular contractility and diastolic relaxation, pericardial effusion and bradycardia. However, the function of the atrial pacemake ...
... The heart is a major target organ for thyroid hormone action. Severe overt hypothyroidism can result in diastolic hypertension, lowered cardiac output, impaired left ventricular contractility and diastolic relaxation, pericardial effusion and bradycardia. However, the function of the atrial pacemake ...
Agriculture, Ecosystems and Environment Full length
... Arterial stiffness increases with age [1], but also hypertension [2], atherosclerosis [3] and diabetes mellitus [4] are conditions associated with increased vessel wall stiffness. Several studies have suggested that subjects with cardiovascular disease have increased arterial stiffness compared to s ...
... Arterial stiffness increases with age [1], but also hypertension [2], atherosclerosis [3] and diabetes mellitus [4] are conditions associated with increased vessel wall stiffness. Several studies have suggested that subjects with cardiovascular disease have increased arterial stiffness compared to s ...
regional distribution of blood flow during swimming in the tufted duck
... velocity could be varied between 0 and 1-Orris"1 and was measured by a Braystoke BFM002 current flow meter. Training lasted for at least a week, by which time the birds could hold station in the test section and swim continuously for at least 20 min at approximately 0-7 m s " ' . Each duck was then ...
... velocity could be varied between 0 and 1-Orris"1 and was measured by a Braystoke BFM002 current flow meter. Training lasted for at least a week, by which time the birds could hold station in the test section and swim continuously for at least 20 min at approximately 0-7 m s " ' . Each duck was then ...
PATENT DUCTUS ARTERIOSUS (PDA)
... in blood flow to occur after delivery. What happens if this blood vessel stays open? If the ductus arteriosus remains open after birth it may allow blood to flow from the aorta back towards the lungs. Over time (days to weeks) a Patent Ductus Arteriosus, also referred to as a PDA, can allow too much ...
... in blood flow to occur after delivery. What happens if this blood vessel stays open? If the ductus arteriosus remains open after birth it may allow blood to flow from the aorta back towards the lungs. Over time (days to weeks) a Patent Ductus Arteriosus, also referred to as a PDA, can allow too much ...
Usefulness of One-stage Coronary Artery Bypass Grafting on the
... evaluation included an abdominal computed tomographic scan, aortograpic, and coronary angiography (CAG). Significant coronary stenosis on the CAG (more than 75% stenosis on New York Heart Association [NYHA] coronary classification) was an indication for coronary revascularization. Patients of AAA wi ...
... evaluation included an abdominal computed tomographic scan, aortograpic, and coronary angiography (CAG). Significant coronary stenosis on the CAG (more than 75% stenosis on New York Heart Association [NYHA] coronary classification) was an indication for coronary revascularization. Patients of AAA wi ...
Exercise training improves conduit vessel function in patients with
... vascular NO bioactivity. Furthermore, interventions ...
... vascular NO bioactivity. Furthermore, interventions ...
Anesthesia-Related Cardiac Arrest in Children with Heart Disease
... ventricular outflow obstruction, pacemaker failure, right-to-left shunt, severe valvular dysfunction, vagal response, acidosis, pulmonary hypertensive crisis, myocardial dysfunction, and severe coronary artery disease. b One case each: epinephrine-induced ventricular fibrillation, prostacyclin effec ...
... ventricular outflow obstruction, pacemaker failure, right-to-left shunt, severe valvular dysfunction, vagal response, acidosis, pulmonary hypertensive crisis, myocardial dysfunction, and severe coronary artery disease. b One case each: epinephrine-induced ventricular fibrillation, prostacyclin effec ...
Ventricles - science-b
... Blood is pumped out of right side through the pulmonary trunk, which splits into pulmonary arteries and takes oxygen-poor blood to lungs Oxygen-rich blood returns to the heart from the lungs via pulmonary veins ...
... Blood is pumped out of right side through the pulmonary trunk, which splits into pulmonary arteries and takes oxygen-poor blood to lungs Oxygen-rich blood returns to the heart from the lungs via pulmonary veins ...
Attention Deficit Hyperactivity Disorder
... Sudden deaths, stroke, and myocardial infarction have been ...
... Sudden deaths, stroke, and myocardial infarction have been ...
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.