Advances in Genetics - Circulation: Cardiovascular Genetics
... 2-fold higher in athletes compared with nonathletes, with ARVC being the most common cause.20 Data from a large study in the United States identified a total of 1866 athletes over a period of 27 years who died suddenly (or were resuscitated) during exercise, equating to an incidence of <100 per year ...
... 2-fold higher in athletes compared with nonathletes, with ARVC being the most common cause.20 Data from a large study in the United States identified a total of 1866 athletes over a period of 27 years who died suddenly (or were resuscitated) during exercise, equating to an incidence of <100 per year ...
Chapter 9 Exercise Prescription for Patients with Cardiovascular and
... When patients whose β-blocker dose has been altered exercise without a new exercise test, signs and symptoms should be monitored, and RPE and HR responses should be recorded at previously performed workloads. These new HRs may serve as the patient’s new exercise target HR (THR) range. Patients on di ...
... When patients whose β-blocker dose has been altered exercise without a new exercise test, signs and symptoms should be monitored, and RPE and HR responses should be recorded at previously performed workloads. These new HRs may serve as the patient’s new exercise target HR (THR) range. Patients on di ...
English
... Some authors have proposed a multifactorial origin for QT prolongation and TdP4. An increase in the QT interval may be reached by multiple mechanisms that in conjunction alter the normal capacity or repolarization reserve with subsequent arrhythmias. The acting mechanisms for the abnormal increase o ...
... Some authors have proposed a multifactorial origin for QT prolongation and TdP4. An increase in the QT interval may be reached by multiple mechanisms that in conjunction alter the normal capacity or repolarization reserve with subsequent arrhythmias. The acting mechanisms for the abnormal increase o ...
Adrenal Insufficiency - Circulation Research
... Cardiac function was evaluated by ventricular function curves during the cardiovascular collapse observed in acute and chronic adrenal insufficiency. A progressive decline in peak cardiac work was observed in the acutely adrenalectomized cat (303; decrease at 1.8 hours and 50% at 3.5 hours after adr ...
... Cardiac function was evaluated by ventricular function curves during the cardiovascular collapse observed in acute and chronic adrenal insufficiency. A progressive decline in peak cardiac work was observed in the acutely adrenalectomized cat (303; decrease at 1.8 hours and 50% at 3.5 hours after adr ...
21 January 2015
... per minute. These are most commonly narrow complex supraventricular tachycardia but also ventricular tachycardia, long QT syndrome, ventricular fibrillation and sinoatrial node dysfunction (4). Bradyarrhythmias - where heart rate is usually less than 100 beats per minute and include congenital hea ...
... per minute. These are most commonly narrow complex supraventricular tachycardia but also ventricular tachycardia, long QT syndrome, ventricular fibrillation and sinoatrial node dysfunction (4). Bradyarrhythmias - where heart rate is usually less than 100 beats per minute and include congenital hea ...
Aortic Valve Replacement for Moderate Aortic Stenosis with Severe
... 135 patients who only had AVR, valve replacement within 90 days of index echocardiogram in the setting of moderate aortic stenosis and LV dysfunction (defined as <50%, 108 patients with EF<35%) conferred a significant long-term mortality benefit of 42% compared to those who did not undergo surgery ( ...
... 135 patients who only had AVR, valve replacement within 90 days of index echocardiogram in the setting of moderate aortic stenosis and LV dysfunction (defined as <50%, 108 patients with EF<35%) conferred a significant long-term mortality benefit of 42% compared to those who did not undergo surgery ( ...
When Diabetic Patients Need Compression Socks
... how to best take care of your health with an important emphasis on your legs and feet. You have been told to inspect your feet and legs daily and you may even need to wear special shoes and socks specifically designed for diabetic patients. People with diabetes often have circulation problems that c ...
... how to best take care of your health with an important emphasis on your legs and feet. You have been told to inspect your feet and legs daily and you may even need to wear special shoes and socks specifically designed for diabetic patients. People with diabetes often have circulation problems that c ...
Feedback_to_aerobic_capacity_questions._New
... increased cardiac output. You needed to add Scott that more oxygenated blood is delivered. 1 mark here Increased red blood cell count: increased red blood cell count is caused because endurance training increases tidal volume so more oxygen is taken in each breath so there is a greater number of re ...
... increased cardiac output. You needed to add Scott that more oxygenated blood is delivered. 1 mark here Increased red blood cell count: increased red blood cell count is caused because endurance training increases tidal volume so more oxygen is taken in each breath so there is a greater number of re ...
Bipolar Limb Leads
... – Signals onset of atrial contraction QRS complex: ventricular depolarization – Signals onset of ventricular contraction.. T wave: repolarization of ventricles PR interval or PQ interval: 0.16 sec – Extends from start of atrial depolarization to start of ventricular depolarization (QRS complex) cont ...
... – Signals onset of atrial contraction QRS complex: ventricular depolarization – Signals onset of ventricular contraction.. T wave: repolarization of ventricles PR interval or PQ interval: 0.16 sec – Extends from start of atrial depolarization to start of ventricular depolarization (QRS complex) cont ...
Exercise, the Athlete`s Heart, and Sudden Cardiac Death
... the LV and on forms of adaptation that enabled it to generate such a sustained increase in workload for a prolonged time period. Morganroth et al23 demonstrated, with echocardiographic assessments of 56 athletes, that those athletes in predominantly endurance training sports had increased LV mass wi ...
... the LV and on forms of adaptation that enabled it to generate such a sustained increase in workload for a prolonged time period. Morganroth et al23 demonstrated, with echocardiographic assessments of 56 athletes, that those athletes in predominantly endurance training sports had increased LV mass wi ...
Guidelines for the Prevention of Postoperative Atrial Fibrillation
... need for reintubation, double the rate of perioperative myocardial infarction, cerebrovascular accidents, hemodynamic compromise, pulmonary edema, ventricular arrhythmias, and/or need for a permanent pacemaker. Although these complications are well recognized, the etiology is not as well defined. It ...
... need for reintubation, double the rate of perioperative myocardial infarction, cerebrovascular accidents, hemodynamic compromise, pulmonary edema, ventricular arrhythmias, and/or need for a permanent pacemaker. Although these complications are well recognized, the etiology is not as well defined. It ...
Syncope and The Older Patient
... Passive testing: sensitivity of 70%, specificity of 90-100% Isoproterenol: only 55% specificity Overall little to add to history and PE; lack of sensitivity with passive testing and lack of specificity with induced testing limits usefulness of test… ...
... Passive testing: sensitivity of 70%, specificity of 90-100% Isoproterenol: only 55% specificity Overall little to add to history and PE; lack of sensitivity with passive testing and lack of specificity with induced testing limits usefulness of test… ...
Four-dimensional ultrasonography of the fetal heart with
... a recent advance that allows dynamic multiplanar slicing and surface rendering of heart anatomy. Fetal heart volumes are acquired with a single automated sweep of the transducer. Spatial and temporal information are combined to display dynamic images that can be extracted from volume datasets. Stand ...
... a recent advance that allows dynamic multiplanar slicing and surface rendering of heart anatomy. Fetal heart volumes are acquired with a single automated sweep of the transducer. Spatial and temporal information are combined to display dynamic images that can be extracted from volume datasets. Stand ...
- Gemini Graphic Design
... occur which will result in an imbalance between myocardial oxygen supply and demand. With cardiac failure, cardiac output falls which will reduce myocardial oxygen supply. In an attempt to compensate, preload, afterload and heart rate increase. This will result in an increase in myocardial oxygen de ...
... occur which will result in an imbalance between myocardial oxygen supply and demand. With cardiac failure, cardiac output falls which will reduce myocardial oxygen supply. In an attempt to compensate, preload, afterload and heart rate increase. This will result in an increase in myocardial oxygen de ...
it`s all about compressions― and defibrillation!
... reducing CPP.6 CPP, hemodynamic function and survival are adversely affected by even short pauses in compressions. The impact of pauses from 3 to 20 seconds on CPP during the initial 3 minutes of CPR are shown in the figure 3 representing Yu’s research.7 During CPR, blood flow to the lungs is substa ...
... reducing CPP.6 CPP, hemodynamic function and survival are adversely affected by even short pauses in compressions. The impact of pauses from 3 to 20 seconds on CPP during the initial 3 minutes of CPR are shown in the figure 3 representing Yu’s research.7 During CPR, blood flow to the lungs is substa ...
Final Written Report - Research
... HLHS is a collection of lesions and each case is unique in the extent to which the heart is malformed. Of all HLHS patients, 85% have some combination of atresia (congenital absence of normal opening or lumen) or stenosis (narrowing of any canal or orifice) of the aortic and mitral valves [9]. The ...
... HLHS is a collection of lesions and each case is unique in the extent to which the heart is malformed. Of all HLHS patients, 85% have some combination of atresia (congenital absence of normal opening or lumen) or stenosis (narrowing of any canal or orifice) of the aortic and mitral valves [9]. The ...
Paediatric ECG Interpretation
... Myocardial infarction (e.g. in children with anomalous coronary arteries / post-cardiac surgery / thrombophilia). Hypo/hypercalcaemia. Hypo/hyperkalaemia. Wolff-Parkinson-White syndrome (see “Abnormal Rhythms” section below) Pericarditis Pericardial effusion may produce QRS voltages less than 5 mm i ...
... Myocardial infarction (e.g. in children with anomalous coronary arteries / post-cardiac surgery / thrombophilia). Hypo/hypercalcaemia. Hypo/hyperkalaemia. Wolff-Parkinson-White syndrome (see “Abnormal Rhythms” section below) Pericarditis Pericardial effusion may produce QRS voltages less than 5 mm i ...
5 rIGHt VentrIcular PacInG ImProVes rIGHt Heart FunctIon In
... to depolarization of the LV myocardium that is earlier than would occur by conduction of an impulse through the AV node (in this case LV depolarization triggered by artificial pacing of the RV free wall), and is known to be detrimental for LV function in the long-term.23 This phenomenon can be reco ...
... to depolarization of the LV myocardium that is earlier than would occur by conduction of an impulse through the AV node (in this case LV depolarization triggered by artificial pacing of the RV free wall), and is known to be detrimental for LV function in the long-term.23 This phenomenon can be reco ...
Natriuretic peptides and atrial fibrillation
... of 5% over 65 year old and up to 8% in elderly population (over 80 year old)1. AF is associated with an increased total and cardiovascular mortality, as well as cardiovascular morbidity, including stroke and hearth failure2. Particularly, the incidence of ischemic stroke patients with permanent, non ...
... of 5% over 65 year old and up to 8% in elderly population (over 80 year old)1. AF is associated with an increased total and cardiovascular mortality, as well as cardiovascular morbidity, including stroke and hearth failure2. Particularly, the incidence of ischemic stroke patients with permanent, non ...
Electrocardiography in horses – part 1
... ambulatory and during prolonged periods at rest or even during exercise. The know-how of a good quality recording is mandatory for a correct diagnosis. The basic equipment consists of electrodes, a recorder and a way to display the trace. Self-adhesive electrodes should be used, and positioned along ...
... ambulatory and during prolonged periods at rest or even during exercise. The know-how of a good quality recording is mandatory for a correct diagnosis. The basic equipment consists of electrodes, a recorder and a way to display the trace. Self-adhesive electrodes should be used, and positioned along ...
- DigitalCommons@Cedarville
... brain would cause the blood vessels in the brain and eyes to rupture if it were not for the rete mirabile or “marvelous net” (Pittman, 2011). According to Pittman (2011), “When the head is lowered, special shunts in the arteries supplying the head restrict blood flow to the brain, diverting it into ...
... brain would cause the blood vessels in the brain and eyes to rupture if it were not for the rete mirabile or “marvelous net” (Pittman, 2011). According to Pittman (2011), “When the head is lowered, special shunts in the arteries supplying the head restrict blood flow to the brain, diverting it into ...
causes of right ventricular failure
... overshadowing the importance of RV function. Before the 1970s, the RV was viewed as little more than a passive conduit for blood[2]; and the RV was thought to play a minor, sub-serviant role to the LV[3]. More recently, the importance of the RV in maintaining haemodynamic stability and organ functio ...
... overshadowing the importance of RV function. Before the 1970s, the RV was viewed as little more than a passive conduit for blood[2]; and the RV was thought to play a minor, sub-serviant role to the LV[3]. More recently, the importance of the RV in maintaining haemodynamic stability and organ functio ...
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.