regulation of cardiovascular functions during acute blood loss
... stroke volume was maintained at a lower level compared to control value in 20% blood loss while an initial significant rise in stroke volume at 5 min followed by the second decrease in stroke volume at H30 and H60 was produced in 35% blood loss. (Fig. 1). There was a significant fall in right atrial ...
... stroke volume was maintained at a lower level compared to control value in 20% blood loss while an initial significant rise in stroke volume at 5 min followed by the second decrease in stroke volume at H30 and H60 was produced in 35% blood loss. (Fig. 1). There was a significant fall in right atrial ...
Diagnosis of arrhythmogenic right ventricular
... A 62-year-old woman with no prior cardiac history presented with a several-week history of recurrent palpitations and near syncope. She reported taking no medications and denied any relevant cardiac family history. Two weeks prior to her current visit, she had been seen for similar complaints and ha ...
... A 62-year-old woman with no prior cardiac history presented with a several-week history of recurrent palpitations and near syncope. She reported taking no medications and denied any relevant cardiac family history. Two weeks prior to her current visit, she had been seen for similar complaints and ha ...
Effect of Altitude on the Heart and the Lungs
... to erythropoiesis. Peripheral chemoreceptor afferent activity rises hyperbolically as hypoxia increases.4 Ventilation and sympathetic activity are augmented, as demonstrated by increased urinary and plasma concentration of catecholamines5 and skeletal muscle sympathetic activity.6 With exposure over ...
... to erythropoiesis. Peripheral chemoreceptor afferent activity rises hyperbolically as hypoxia increases.4 Ventilation and sympathetic activity are augmented, as demonstrated by increased urinary and plasma concentration of catecholamines5 and skeletal muscle sympathetic activity.6 With exposure over ...
Brain responses to cardiac electrical stimulation: a new - J
... Although cardiac sensation, such as palpitation or chest pain, is common and is sometimes a malignant sign of heart diseases, the mechanism by which the human brain responds to afferent signals from the heart remains unclear. In this study, we investigated whether electrical stimulation of the heart ...
... Although cardiac sensation, such as palpitation or chest pain, is common and is sometimes a malignant sign of heart diseases, the mechanism by which the human brain responds to afferent signals from the heart remains unclear. In this study, we investigated whether electrical stimulation of the heart ...
Neonatal Resuscitation July 2016
... venosis, ductus arteriosis and foramen ovale are no longer needed Increased pressure in right and left chambers of the heart force Structures closed Blood is diverted away from these structures. “Slam shut” Structures close and transition into ligaments ...
... venosis, ductus arteriosis and foramen ovale are no longer needed Increased pressure in right and left chambers of the heart force Structures closed Blood is diverted away from these structures. “Slam shut” Structures close and transition into ligaments ...
Tissue doppler echocardiography for evaluating left ventricular
... our study. Diastolic dysfunction characterized by prolonged IVRT is the earliest abnormality in heart in obese patients. It can be defined as an abnormality of ventricular filling with normal cardiac function and compensatory increased atrial pressure.16 In this condition, E wave depressed due to de ...
... our study. Diastolic dysfunction characterized by prolonged IVRT is the earliest abnormality in heart in obese patients. It can be defined as an abnormality of ventricular filling with normal cardiac function and compensatory increased atrial pressure.16 In this condition, E wave depressed due to de ...
Growth differentiation factor-15 (GDF
... GDF-15 positively related to atrial fibrosis in atrial fibrillation patients that GDF-15 is an independent predictor of adverse outcomes in patients with heart failure, acute coronary syndrome and acute pulmonary embolism [25, 26]. In addition, recent studies have found that inflammation may play a ...
... GDF-15 positively related to atrial fibrosis in atrial fibrillation patients that GDF-15 is an independent predictor of adverse outcomes in patients with heart failure, acute coronary syndrome and acute pulmonary embolism [25, 26]. In addition, recent studies have found that inflammation may play a ...
Understanding Ventricular Tachycardia: Towards Individualized
... were categorized as reperfused when TIMI flow grade 3 was achieved within 9 hours after onset of symptoms. Reperfused patients were subdivided into patients who had underwent primary PCI (defined as angioplasty and/or stenting without prior or concomitant fibrinolytic therapy)18 and patients who had ...
... were categorized as reperfused when TIMI flow grade 3 was achieved within 9 hours after onset of symptoms. Reperfused patients were subdivided into patients who had underwent primary PCI (defined as angioplasty and/or stenting without prior or concomitant fibrinolytic therapy)18 and patients who had ...
Pacemakers - Houston Electrophysiology Associates
... then connected to the pacemaker, which is placed beneath the skin just below the collar bone. The surgery usually takes about 1 to 2 hours, and the risk of surgical complications is about 1% to 2%. Usually only a small bump in the skin is seen over the place where the pacemaker has been implanted. O ...
... then connected to the pacemaker, which is placed beneath the skin just below the collar bone. The surgery usually takes about 1 to 2 hours, and the risk of surgical complications is about 1% to 2%. Usually only a small bump in the skin is seen over the place where the pacemaker has been implanted. O ...
Loss of Epidermal Growth Factor Receptor in Vascular
... In sections, left ventricular wall thickness and left ventricular diameter were increased, confirming the echocardiography data of left ventricular hypertrophy and dilation (Figure 1D and Table S3). Cardiomyocyte diameter was increased in KO animals compared with controls (Figures 1G and 2A), albeit ...
... In sections, left ventricular wall thickness and left ventricular diameter were increased, confirming the echocardiography data of left ventricular hypertrophy and dilation (Figure 1D and Table S3). Cardiomyocyte diameter was increased in KO animals compared with controls (Figures 1G and 2A), albeit ...
BME 311: BIOMEDICAL INSTRUMENTATION I Lecturer: Ali Işın
... This causes the heart to beat in a normal rhythm again. • Similar to pacemakers, these devices typically include electrode wire(s) that pass through a vein to the right chambers of the heart, usually lodging in the apex of the right ventricle. The difference is that pacemakers are more often tempora ...
... This causes the heart to beat in a normal rhythm again. • Similar to pacemakers, these devices typically include electrode wire(s) that pass through a vein to the right chambers of the heart, usually lodging in the apex of the right ventricle. The difference is that pacemakers are more often tempora ...
Haemodynamic Effects of Continuous Positive Airway Pressure in
... 1. Continuous positive airway pressure increases intrathoracic pressure, thereby decreasing left ventricular preload and afterload. We hypothesized that there would be a dose-related alteration in cardiac and stroke volume indices in response to continuous positive airway pressure in normal subjects ...
... 1. Continuous positive airway pressure increases intrathoracic pressure, thereby decreasing left ventricular preload and afterload. We hypothesized that there would be a dose-related alteration in cardiac and stroke volume indices in response to continuous positive airway pressure in normal subjects ...
Characterization of heart and pulmonat vacular
... Mohammed Elfadhil and Mr. Abubaker Y. Elamin, who help me so much in data analysis setting and finishing of my thesis ...
... Mohammed Elfadhil and Mr. Abubaker Y. Elamin, who help me so much in data analysis setting and finishing of my thesis ...
sample - Test Bank Exam
... 18. Which drug is administered during the initial treatment of acute pulmonary edema because it blunts the sympathetic response? 1. Morphine sulfate 2. Furosemide 3. Dopamine 4. Digoxin ...
... 18. Which drug is administered during the initial treatment of acute pulmonary edema because it blunts the sympathetic response? 1. Morphine sulfate 2. Furosemide 3. Dopamine 4. Digoxin ...
Circulatory Shock
... lesion (severe aortic mitral or pulmonary stenosis) or help in providing evidence for massive pulmonary embolism. The type and cause of shock may be obvious from the medical history, physical examination, or lab investigations. For example, shock after traumatic injury is likely to be hypovolemic (d ...
... lesion (severe aortic mitral or pulmonary stenosis) or help in providing evidence for massive pulmonary embolism. The type and cause of shock may be obvious from the medical history, physical examination, or lab investigations. For example, shock after traumatic injury is likely to be hypovolemic (d ...
What is low blood pressure
... Atrial fibrillation is a disorder of the heart characterized by rapid and irregular electrical discharges from the muscle of the heart (instead of the SA node), causing the ventricles to contract irregularly and (usually) rapidly. The rapidly contracting ventricles do not have enough time to fill ma ...
... Atrial fibrillation is a disorder of the heart characterized by rapid and irregular electrical discharges from the muscle of the heart (instead of the SA node), causing the ventricles to contract irregularly and (usually) rapidly. The rapidly contracting ventricles do not have enough time to fill ma ...
standard format for s
... Turn on the computer by using the power switch on the left hand side of the computer. (Slide it back) Hook up the PASCO interface and the EKG sensor to the interface. Double click (always using left mouse button) on the Science Workshop icon. Place cursor (arrow) on analog plug on lower right. Click ...
... Turn on the computer by using the power switch on the left hand side of the computer. (Slide it back) Hook up the PASCO interface and the EKG sensor to the interface. Double click (always using left mouse button) on the Science Workshop icon. Place cursor (arrow) on analog plug on lower right. Click ...
Arrhythmogenic Right Ventricular
... 77% of newly diagnosed probands or affected family members received this therapy.19 Although it is well documented from other studies that the majority of probands who had ICDs will have appropriate antitachycardia pacing or shock therapy for VT or ventricular fibrillation, the actual number of live ...
... 77% of newly diagnosed probands or affected family members received this therapy.19 Although it is well documented from other studies that the majority of probands who had ICDs will have appropriate antitachycardia pacing or shock therapy for VT or ventricular fibrillation, the actual number of live ...
Influence of ejection fraction on outcomes and efficacy of
... NYHA functional class did not differ by EF. Patients with higher EF were more likely to have reduced diastolic blood pressure, although systolic blood pressure did not differ. Patients with higher ejection fraction were less likely to be on angiotensin converting enzyme inhibitor/angiotensin recepto ...
... NYHA functional class did not differ by EF. Patients with higher EF were more likely to have reduced diastolic blood pressure, although systolic blood pressure did not differ. Patients with higher ejection fraction were less likely to be on angiotensin converting enzyme inhibitor/angiotensin recepto ...
Manuscript - Journal of Cardiothoracic Surgery
... characterized by avoidance of ischemia-reperfusion injury and cardioplegia [13–19]. It may benefit to patients with ruptured aneurysms of the sinus of Valsalva. In our study, all operations were performed on a beating heart. There was no postoperative low cardiac output syndrome or serious arrhythmi ...
... characterized by avoidance of ischemia-reperfusion injury and cardioplegia [13–19]. It may benefit to patients with ruptured aneurysms of the sinus of Valsalva. In our study, all operations were performed on a beating heart. There was no postoperative low cardiac output syndrome or serious arrhythmi ...
Clinical Information
... signal distortion. If ECG signal distortion is severe it may be necessary to select another lead or reposition the ECG electrodes. Once you have done all things possible to reduce the interference, adjust the current until capture is recognized. Monitoring the externally paced patient Patients who a ...
... signal distortion. If ECG signal distortion is severe it may be necessary to select another lead or reposition the ECG electrodes. Once you have done all things possible to reduce the interference, adjust the current until capture is recognized. Monitoring the externally paced patient Patients who a ...
The Normal ECG and its (Normal) Variants
... This chapter is not divided in two sections because the knowledge of the normal ECG and its normal variants is as essential for those readers choosing to glance as for those preferring the full picture. This chapter can be used as a dictionary by both types of readers. When we interpret an ECG we co ...
... This chapter is not divided in two sections because the knowledge of the normal ECG and its normal variants is as essential for those readers choosing to glance as for those preferring the full picture. This chapter can be used as a dictionary by both types of readers. When we interpret an ECG we co ...
Cardiac output and peripheral resistance during larval development
... increase in proportion to body mass. We found that heart rate declined in larval Xenopus during development at a much slower rate than would be predicted from allometric equations based on interspecific comparisons in adult vertebrates. Arterial blood pressure increased continuously from larvae to t ...
... increase in proportion to body mass. We found that heart rate declined in larval Xenopus during development at a much slower rate than would be predicted from allometric equations based on interspecific comparisons in adult vertebrates. Arterial blood pressure increased continuously from larvae to t ...
Echocardiographic evaluation of cardiac function response to
... if left untreated, with a potential high risk of sudden death 3. Surgical aortic valve replacement (SAVR) used to be the only effective treatment for severe AS, being the second indication for open heart surgery after coronary artery bypass grafting (CABG) 4. Trans-catheter aortic valve implantation ...
... if left untreated, with a potential high risk of sudden death 3. Surgical aortic valve replacement (SAVR) used to be the only effective treatment for severe AS, being the second indication for open heart surgery after coronary artery bypass grafting (CABG) 4. Trans-catheter aortic valve implantation ...
heart rate changes during different phases of menstrual cycle
... phases of the menstrual cycle. The aim of the research work was to study heart rate changes during different phases of normal menstrual cycle using group of tests and to establish the validity of such conflicting results. Methods: Heart rate changes were evaluated in 30 female students of J.S.S. Med ...
... phases of the menstrual cycle. The aim of the research work was to study heart rate changes during different phases of normal menstrual cycle using group of tests and to establish the validity of such conflicting results. Methods: Heart rate changes were evaluated in 30 female students of J.S.S. Med ...
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.