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Cardiovascular system
Published in A Stewart Whitley, Jan Dodgeon, Angela Meadows, Jane Cullingworth, Ken Holmes, Marcus Jackson, Graham Hoadley, Randeep Kumar Kulshrestha, Clark’s Procedures in Diagnostic Imaging: A System-Based Approach, 2020
A Stewart Whitley, Jan Dodgeon, Angela Meadows, Jane Cullingworth, Ken Holmes, Marcus Jackson, Graham Hoadley, Randeep Kumar Kulshrestha
Cardiac arrhythmia (irregular heart rhythm) is a common cause of the sensation of palpitation and may cause dizziness if the cardiac output is affected. There are many other possible causes including psychological causes that must be excluded by careful history and examination. If arrhythmia is confirmed on ECG (standard or ambulatory monitoring) it may be managed medically but increasingly is managed by radiofrequency ablation of abnormal or malfunctioning areas of the cardiac nerve conduction pathways [27].
Electrocardiogram
Published in Kayvan Najarian, Robert Splinter, Biomedical Signal and Image Processing, 2016
Kayvan Najarian, Robert Splinter
AF is one of the most common arrhythmias that occur as a result of rheumatic disease, infections (such as pericarditis), atherosclerotic disease, or hyperthyroidism. These conditions caused by AF are not as life threatening as some of the ventricular arrhythmias but provide an increased risk for stroke. Physical symptoms include palpitations, dizziness, and shortness of breath. Some people having AF never notice any sign of discomfort.
Societal Impact
Published in John D. Cressler, Silicon Earth, 2017
Okay, blood pressure check. Deeeepppp-breath-in. Hold it. Now slowly let it out. Feeling relaxed? Good. Now, repeat after me: “CLIMATE CHANGE.” Any temple throbbing? Heart palpitations? Facial tics? Cold sweat? Welcome to Contentious Issues 101. Global warming is a fact. Yep, Mama Earth is most definitely getting hotter (by perhaps 3°C this century—Figure 15.28). No one argues this fact. Very bad things are going to happen as a result (think melting polar ice caps, rising sea level [poor Venice], decreasing snow melt for irrigation of the world’s breadbaskets, shifting weather patterns, BAD storms, drought, lousy skiing, etc.). However, people do argue, heatedly (pun intended, sorry), about the role humans are actually playing in creating this observed planetary warming and whether we have a responsibility as a global community in trying to help Ma Earth out by cutting back on our greenhouse gas emissions. This is a big deal and highly contentious because there is a strong coupling between the world’s economic engine and greenhouse gas production. The United Nations Intergovernmental Panel on Climate Change (IPCC), a collection of the world’s leading climate scientists, has concluded that [21]: (1) “Warming of the climate system is unequivocal, and since the 1950s, many of the observed changes are unprecedented over decades to millennia. The atmosphere and ocean have warmed, the amounts of snow and ice have diminished, and sea level has risen; and (2) “Human influence on the climate system is clear, and recent anthropogenic emissions of greenhouse gases are the highest in history. Recent climate changes have had widespread impact on human and natural systems.” No mincing of words there. Something like 97% of the world’s climate scientists (thousands of folks who got a PhD and make their living doing this sort of thing) agree with the IPCC. Yet, the debate continues, especially between science (which is in the best position to know using data and climate models), and BIG BUSINESS (which clearly has a vested interest in the outcome), politicians (ditto), and even a depressingly large fraction of John Q. Public (aka, the populous). Many in-the-know no longer simply refer to such folks euphemistically as “climate change skeptics,” but rather as “climate change deniers.” An important distinction, I think. Sadly, the debate continues, the predictable result being that no political will exists to make any sort of rational changes. Read: Congress sits on its hands (I can think of more apt descriptive phrases). Sigh … Meanwhile, the planet just keeps on warming. As Voltaire famously said, “Men argue, nature acts.” Intuitively, the inertia of the Earth’s climate is not small (major understatement alert!), so when it turns out in the end that we are indeed a Titanic headed right for the iceberg, our options for last-minute sidestepping are depressingly limited. Read: this is a REALLY important issue to wrestle with, by any reckoning.
Data Analytics for Risk of Hospitalization of Cardiac Patients
Published in IETE Journal of Research, 2023
M. Chandralekha, N. Shenbagavadivu
The onset of chronic disease especially in patients with heart disease is mostly influenced by the lifestyle and predicting heart disease early could save cost and life. Heart disease refers to problems that are associated with blood vessels, circulatory system, disease related to tissues and structural units. The symptoms of heart disease vary for men and women. Men experience chest pain while women experience shortness of breath, chest discomfort. However, the common symptom includes chest pain, breathlessness and palpitations. Other symptoms include that pain that migrates from chest towards arm, back, jaw, heavy sweating, nausea, dizziness. Abnormal heartbeats or arrhythmia have symptoms like fluttering feeling in the chest, high heart beat, low heart beat, dizziness, shortness of breath and dizziness. There are number of factors that can cause heart disease such as genetic factors, heart muscle damages, heart valve disorders, pumping conditions and life style. The main risk factors for developing heart disease are age, sex, family history, smoking, diet that have high salt, fat, sugar, high blood pressure, diabetes, high cholesterol levels, stress and anxiety.
Context-aware system for cardiac condition monitoring and management: a survey
Published in Behaviour & Information Technology, 2022
Godwin Okechukwu Ogbuabor, Juan Carlos Augusto, Ralph Moseley, Aléchia van Wyk
Though there are different examples of cardiac diseases, such as cardiac arrhythmias, atherosclerotic disease, and cerebrovascular disease; Celermajer et al. (2012) stated that most of the cardiovascular challenges in the world is due to atherosclerosis. Atherosclerosis is a condition where arteries become blocked with fatty substances called plaques which can result to stroke or heart attack (Stanner 2008). Its symptoms include pain or discomfort in the chest, shortness of breath (Dyspnea), fatigue and nausea. In 2014, Bhatnagar et al. (2015) conducted research and discovered that 46% of cardiovascular disease death in UK is as a result of atherosclerosis. Another cardiac disease that worth looking into is arrhythmia. Cardiac arrhythmia occurs when the electrical impulses that coordinate the heartbeats do not work properly, causing the heart to beat too fast, too slow or irregularly (Stanner 2008). Its symptoms include palpitation, weakness and chest pain.
Automatic atrial fibrillation detection from short ECG signals: A hybrid deep learning approach
Published in IISE Transactions on Healthcare Systems Engineering, 2022
Xiaodan Wu, Zeyu Sui, Chao-Hsien Chu, Guanjie Huang
Atrial fibrillation (AF) is one of the most common arrhythmias which affect millions of people worldwide (Naccarelli et al., 2009). The onset of early AF is relatively short, and the symptoms are not obvious, making it difficult for patients to detect. Without timely treatment, patients may experience symptoms such as palpitations, shortness of breath, and complications such as stroke and heart failure (Camm et al., 2010; Oster & Clifford, 2015). Therefore, the research on early detection and auxiliary diagnosis of AF is of great significance for improving treatment efficiency and quality.