• Study Resource
  • Explore Categories
    • Arts & Humanities
    • Business
    • Engineering & Technology
    • Foreign Language
    • History
    • Math
    • Science
    • Social Science

    Top subcategories

    • Advanced Math
    • Algebra
    • Basic Math
    • Calculus
    • Geometry
    • Linear Algebra
    • Pre-Algebra
    • Pre-Calculus
    • Statistics And Probability
    • Trigonometry
    • other →

    Top subcategories

    • Astronomy
    • Astrophysics
    • Biology
    • Chemistry
    • Earth Science
    • Environmental Science
    • Health Science
    • Physics
    • other →

    Top subcategories

    • Anthropology
    • Law
    • Political Science
    • Psychology
    • Sociology
    • other →

    Top subcategories

    • Accounting
    • Economics
    • Finance
    • Management
    • other →

    Top subcategories

    • Aerospace Engineering
    • Bioengineering
    • Chemical Engineering
    • Civil Engineering
    • Computer Science
    • Electrical Engineering
    • Industrial Engineering
    • Mechanical Engineering
    • Web Design
    • other →

    Top subcategories

    • Architecture
    • Communications
    • English
    • Gender Studies
    • Music
    • Performing Arts
    • Philosophy
    • Religious Studies
    • Writing
    • other →

    Top subcategories

    • Ancient History
    • European History
    • US History
    • World History
    • other →

    Top subcategories

    • Croatian
    • Czech
    • Finnish
    • Greek
    • Hindi
    • Japanese
    • Korean
    • Persian
    • Swedish
    • Turkish
    • other →
 
Profile Documents Logout
Upload
The right ventricle, outflow tract, and ventricular
The right ventricle, outflow tract, and ventricular

... dent lacZ reporter mice (Soriano, 1999), we show that the outflow tract, right ventricle, and the ventricular septum are marked by the activity of the mef2c-AHF-Cre transgene. In addition, the studies presented here demonstrate that cells marked by the mef2c-AHF-Cre transgene contribute to the endoc ...
Pectus excavatum
Pectus excavatum

... The authors who have carried out these investiDeBakey, 1939; Ochsner and Ochsner, 1966) are pseudonyms describing the same deformity of gations blame their abnormal findings on the dewhich the aetiology remains unknown and open to formity of the chest wall, but we believe that a speculation. Brodkin ...
Ischemic Mitral Valve Disease: Repair, Replace or Ignore?
Ischemic Mitral Valve Disease: Repair, Replace or Ignore?

... • IMR is caused by altered left ventricular geometry and function • Chronic IMR is present in 10%-20% of pts with CAD • Chronic IMR is associated with a markedly worse prognosis after AMI • IMR 2X more heart failure and mortality after AMI • Chronic IMR has been called the “last frontier” in MV repa ...
Cardio81-ECGPt2
Cardio81-ECGPt2

...  detected on ECG with: large negative wave in limb lead I axial deviation to the right eg/ left ventricle hypertrophy o due to hypertension (greater pressure in aorta) o left ventricle must generate greater pressure for output o detected on ECG with: left axis deviation 2. Ischemia Ischemia’s effec ...
thrombosis of the main pulmonary arteries - Heart
thrombosis of the main pulmonary arteries - Heart

... pulmonary hypertension. A skiagram at this time showed an apparent mass in the region of the left pulmonary artery and a diagnosis of neoplasm of the lung was considered. In early December she had evidence of consolidation in the left upper lobe with a slight fever; in late December she experienced ...
original article
original article

... This also explains the relatively few and small haemorrhage in the atrial and ventriclar musculature where the density of vascular supply is less. The absence of structural changes in 20% of cases may be due to the trivial nature of structural changes which could not have been detected by the serial ...
App For Improving Heart Rate Monitor Based Endurance
App For Improving Heart Rate Monitor Based Endurance

... until it gives a good reading. This depends heavily on the individual, but a set of guidelines can be found on Zephyr technologies website. Then they run for 10 minutes without sonification, followed by 10 more minutes with sonification. Every time the heart rate monitor sends a packet, the heart ra ...
Transthoracic Echocardiography (TTE) Policy
Transthoracic Echocardiography (TTE) Policy

... Covered indications for TTE are consistent with CMS LCD and may include, but are not limited to: • Congenital heart disease Covered indications for 2D TTE are consistent with CMS LCD and may include, but are not limited to: • Abnormalities of the great vessels • Hypertensive cardiovascular disease • ...
Table 2 - JACC: Heart Failure
Table 2 - JACC: Heart Failure

... observed increase in peak VO2 among women (þ2.7 ml/kg/ min) that paralleled the increase observed among men. Finally, a study of 123 patients with CHF randomized to supervised exercise training versus control status found that after 10 years of training, the training group had higher quality of life ...
A simple method of weighing the heart
A simple method of weighing the heart

... 3 Pulmonary disease excluding hypostatic pneumonia or single attack of lobar pneumonia Conditions which might reasonably be expected to give rise to pulmonary hypertension such as mitral stenosis were included. When systemic hypertension was also present, the case was placed in group 2. Figure 4 sho ...
Document
Document

... (growth failure due to heart failure caused by excessive pulmonary blood flow is uncommon) ...
Valentin Fuster and Sidney C. Smith, Jr Joseph S. Alpert, Gabriel
Valentin Fuster and Sidney C. Smith, Jr Joseph S. Alpert, Gabriel

... a device presume the absence of inciting causes that may be eliminated without detriment to the patient (eg, nonessential drug therapy). (6) The committee endeavored to maintain consistency of recommendations in this and other previously published guidelines. In the section on atrioventricular (AV) ...
Changes in the cardiac autonomic regulation in children with
Changes in the cardiac autonomic regulation in children with

... Methods: Eighteen children with ADHD admitted to the Department of Children and Adolescent Psychiatry, Clinic of Psychiatry, University Hospital in Martin, Slovak Republic between January and September 2006 and 18 matched healthy subjects were recruited. HRV analysis was carried out in three positio ...
The physiology of cardiac auscultation
The physiology of cardiac auscultation

... enables diagnosis in the majority of pediatric cases referred for evaluation of a cardiac murmur. In childhood the great majority of cardiac murmurs are innocent [5,6]. Although the ECG may rule out significant anatomic structural heart disease, the only definitive way of diagnosing an innocent hear ...
Heterogeneous responses of systolic and diastolic left ventricular
Heterogeneous responses of systolic and diastolic left ventricular

... exercise intolerance despite preserved ejection fraction (EF) without evidence of left ventricular (LV) hypertrophy or left atrial (LA) dilatation and with borderline echocardiographic Doppler diastolic filling parameters (e.g. E/E′ between 8 and 15). The presence and nature of cardiac dysfunction or ...
Comorbidities and Physical and Cognitive Impairments in Elderly
Comorbidities and Physical and Cognitive Impairments in Elderly

... hospitalizations and mortality were chronic obstructive pulmonary disease and bronchiectasis, renal failure, diabetes mellitus, depression, and other lower respiratory disease 11. Substantial variation exists in the reported impact of comorbidities on the outcome of elderly patients with HF. This va ...
Relationship between right ventricular ejection fraction and
Relationship between right ventricular ejection fraction and

... fraction and maximum exercise oxygen consumption: A methodological study in chronic heart failure patients Marcus Hacker, MD,a Stefan Störk, MD, MSc,b Diana Stratakis, MD,c Christiane E. Angermann, MD,b Rudolf Huber, MD,c Klaus Hahn, MD,a and Andreas Tausig, MDa Background. Peak oxygen consumption ...
Prolonged Diastolic Time Fraction Protects Myocardial
Prolonged Diastolic Time Fraction Protects Myocardial

... ,25% of the range between its minimal and maximal values. Estimating DTF as the period between minimal and maximal LV dP/dt or as the period between minimal LV dP/dt and opening of the aortic valve for 1 pressure step in each dog3,4,9,12 resulted in values of DTF that were 0.1160.02 and 0.1060.03 hi ...
Evaluation And Treatment Of Common But Non
Evaluation And Treatment Of Common But Non

... May be conducted or non-conducted to ventricles PACs with “aberrancy” may look like PVCs Early beats with pause or non-conducted both lead to irregular heart rate Common in otherwise structurally and functionally normal hearts; rarely occur with underlying cardiomyopathy or atrial tumor PACs may be ...
Mihajlo Lojpur, M.D., Ph.D. - Adult basic life support 1 ADULT BASIC
Mihajlo Lojpur, M.D., Ph.D. - Adult basic life support 1 ADULT BASIC

... This maneuver will lift the patient’s tongue away from the back of the throat and provide an adequate airway. NOTE : The jaw thrust technique is not recommended for lay rescuers because it is difficult to learn and perform. Therefore, the lay rescuer should open the airway using a head-tilt, chin-li ...
Ventricular fibrillation: evolution of the multiple
Ventricular fibrillation: evolution of the multiple

... than in two dimensions (Pan­ lov & Hogeweg 1995, 1996). The critical mass for ­ brillation in a cube was found to be about one wavelength (the size of one side). It was also shown that for certain parameter values, the breakup occurs only in three dimensions, but not at all in two dimensions. The br ...
Patients With Clinical Diagnosis of Dilated
Patients With Clinical Diagnosis of Dilated

... Fifty-eight patients had mild or no symptoms (NYHA class I or II) and 43 had moderate or severe symptoms (NYHA class III or IV). In one patient, functional class could not be determined from the medical record. As shown in Table 3, patients with severe symptoms had higher heart rates and larger left ...
PDF - Circulation
PDF - Circulation

... Fifty-eight patients had mild or no symptoms (NYHA class I or II) and 43 had moderate or severe symptoms (NYHA class III or IV). In one patient, functional class could not be determined from the medical record. As shown in Table 3, patients with severe symptoms had higher heart rates and larger left ...
Electrocardiographic interpretation in athletes: the
Electrocardiographic interpretation in athletes: the

... of sudden cardiac death (SCD), such as cardiomyopathies and primary electrical diseases, are suggested by abnormal findings present on a 12-lead ECG. ECG interpretation in athletes requires careful analysis to properly distinguish physiological changes related to athletic training from findings sugges ...
Cardiac Surgery: Heart Valve Disease
Cardiac Surgery: Heart Valve Disease

... the three leaflets of the aortic valve fuse together before birth. This creates a two-leaflet valve, instead of the normal three-leaflet valve (Figure 12). BAV also affects the thoracic aorta, the largest artery in the body that carries blood from the heart to the rest of the body. A heart with BAV ...
< 1 ... 98 99 100 101 102 103 104 105 106 ... 562 >

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.
  • studyres.com © 2025
  • DMCA
  • Privacy
  • Terms
  • Report