Evaluation of right and left ventricular function using speckle tracking
... strain 1.6 percentage points (PP) (COV = 8.2%), the same in various locations of the heart. The inter-individual error was, as expected, greater, 2.5 PP (COV = 12.7%), with 2D strain error in the mid level of the RV being significantly greater expressed in absolute but not in relative terms (3.94 PP ...
... strain 1.6 percentage points (PP) (COV = 8.2%), the same in various locations of the heart. The inter-individual error was, as expected, greater, 2.5 PP (COV = 12.7%), with 2D strain error in the mid level of the RV being significantly greater expressed in absolute but not in relative terms (3.94 PP ...
Clustering Heart Rate Dynamics Is Associated with b
... daytime, and participants were asked to avoid smoking or drinking alcoholic beverages and to stay in a resting state while being monitored. Valid DNA samples were obtained in 221 subjects by drawing blood or by buccal swabs. The final study sample therefore consisted of 221 healthy adult subjects (5 ...
... daytime, and participants were asked to avoid smoking or drinking alcoholic beverages and to stay in a resting state while being monitored. Valid DNA samples were obtained in 221 subjects by drawing blood or by buccal swabs. The final study sample therefore consisted of 221 healthy adult subjects (5 ...
2010 Left ventricular assist device management in patients
... (RAAS) and sympathetic nervous system (SNS). The RAAS and SNS not only play critical roles in adverse myocardial remodeling that may impact long-term left ventricular and right ventricular performance; they also drive fluid retention and increase systemic afterload. Hydralazine and nitrate combinati ...
... (RAAS) and sympathetic nervous system (SNS). The RAAS and SNS not only play critical roles in adverse myocardial remodeling that may impact long-term left ventricular and right ventricular performance; they also drive fluid retention and increase systemic afterload. Hydralazine and nitrate combinati ...
Heart Blocks and Pacemakers - Calgary Emergency Medicine
... the need for oxygenated blood increases, the pacemaker ensures that the heart rate increases to provide additional cardiac output Adjusting Heart Rate to Activity Normal Heart Rate Rate Responsive Pacing Fixed-Rate Pacing ...
... the need for oxygenated blood increases, the pacemaker ensures that the heart rate increases to provide additional cardiac output Adjusting Heart Rate to Activity Normal Heart Rate Rate Responsive Pacing Fixed-Rate Pacing ...
PULMONARY ATRESIA WITH INTACT VENTRICULAR SEPTUM
... The systolic murmur, noted to the right of the lower part of the sternum in our case, and the large "v9" wave in the pressure curve from the right atrium (Fig. 4) indicate retrograde movement of blood through the tricuspid valve (Wood, 1956). Thus tricuspid regurgitation may also occur in cases with ...
... The systolic murmur, noted to the right of the lower part of the sternum in our case, and the large "v9" wave in the pressure curve from the right atrium (Fig. 4) indicate retrograde movement of blood through the tricuspid valve (Wood, 1956). Thus tricuspid regurgitation may also occur in cases with ...
Nobel Prizes: Contributions to Cardiology
... for organ cryopreservation and transplantation1-3,8. In 1935, he created a system for sterile oxygen supply and preservation of organs removed from the body. He also cooperated with other researchers for the development of cardiac valvotomy surgery and sarcoma cell culture. He published the books “T ...
... for organ cryopreservation and transplantation1-3,8. In 1935, he created a system for sterile oxygen supply and preservation of organs removed from the body. He also cooperated with other researchers for the development of cardiac valvotomy surgery and sarcoma cell culture. He published the books “T ...
Lethal Arrhythmias
... Rationale: Since the polarized or resting cell has the negative charge at rest, depolarization occurs when sodium moves across the cell membrane into the cell, positively charged. As depolarization occurs the change in membrane voltage triggers contraction of the cell. The Cardiac Conduction System ...
... Rationale: Since the polarized or resting cell has the negative charge at rest, depolarization occurs when sodium moves across the cell membrane into the cell, positively charged. As depolarization occurs the change in membrane voltage triggers contraction of the cell. The Cardiac Conduction System ...
aortic arch in eisenmenger`s complex
... demonstrated this by bronchography. It has also been demonstrated by dissection at necropsy. The lung is usually of less than normal volume but clinically appears to ventilate well; on fluoroscopy there is no mediastinal swing with Maier (1954) described a case in respiration. which the avascular lu ...
... demonstrated this by bronchography. It has also been demonstrated by dissection at necropsy. The lung is usually of less than normal volume but clinically appears to ventilate well; on fluoroscopy there is no mediastinal swing with Maier (1954) described a case in respiration. which the avascular lu ...
Cardiology - 12DaysinMarch
... Cardiac Tamponade • When to suspect? – Pulsus Paradoxus Definition: a drop in systolic BP of > 10 mmHg with inspiration Implied: there is some degree of BP drop associated with inspiration (increased venous return) at baseline. To understand why this happens, is to understand tamponade? ...
... Cardiac Tamponade • When to suspect? – Pulsus Paradoxus Definition: a drop in systolic BP of > 10 mmHg with inspiration Implied: there is some degree of BP drop associated with inspiration (increased venous return) at baseline. To understand why this happens, is to understand tamponade? ...
Cardiovascular Assessment of Infants and Children INTRODUCTION
... of the infundibulum of the right ventricular outflow tract and ventricular septal defect, classically known as tetralogy of Fallot. A typical spell is characterized by a sudden increase in intensity of the cyanosis, at times associated with loss of consciousness. This clinical phenomenon is caused b ...
... of the infundibulum of the right ventricular outflow tract and ventricular septal defect, classically known as tetralogy of Fallot. A typical spell is characterized by a sudden increase in intensity of the cyanosis, at times associated with loss of consciousness. This clinical phenomenon is caused b ...
Understanding cardiac “echo” reports
... Q: Mitral valve prolapse was reported for previous echocardiography but not now. Which test was wrong? A: Probably neither. Echocardiographic criteria for diagnosing mitral valve prolapse are more stringent now than they were in the past. Q: Is this patient fit for surgery? A: The TTE evaluates only ...
... Q: Mitral valve prolapse was reported for previous echocardiography but not now. Which test was wrong? A: Probably neither. Echocardiographic criteria for diagnosing mitral valve prolapse are more stringent now than they were in the past. Q: Is this patient fit for surgery? A: The TTE evaluates only ...
Full PDF - American Journal of Physiology
... limbs as cycle ergometer intensity increases, but rather, somewhat large oscillations in flow whereby blood is dragged in both directions across the cell membranes. Simplistically, we assumed that this might represent a greater stimulus to endothelial NO production or bioavailability than a simple i ...
... limbs as cycle ergometer intensity increases, but rather, somewhat large oscillations in flow whereby blood is dragged in both directions across the cell membranes. Simplistically, we assumed that this might represent a greater stimulus to endothelial NO production or bioavailability than a simple i ...
Ischemic Nucleotide Breakdown Increases During Cardiac
... Nucleoside phosphorylase activity in adult heart was somewhat lower than in neonatal heart (Fig. 3). This finding is in agreement with published data [27j. Neonatal myocytes contained half the activity observed in heart homogenates. The adult ventricular and cellular preparations showed comparable a ...
... Nucleoside phosphorylase activity in adult heart was somewhat lower than in neonatal heart (Fig. 3). This finding is in agreement with published data [27j. Neonatal myocytes contained half the activity observed in heart homogenates. The adult ventricular and cellular preparations showed comparable a ...
High-Intensity Interval Training
... 82% are aware of their condition 75% use anti-hypertensive meds Only 53% have condition controlled to target levels 1 in 5 US adults with HTN do not know they have it 1 in 3 have pre-hypertension ...
... 82% are aware of their condition 75% use anti-hypertensive meds Only 53% have condition controlled to target levels 1 in 5 US adults with HTN do not know they have it 1 in 3 have pre-hypertension ...
Mixed and Central Venous Oxygen Saturation
... and co-workers performed the earliest comparison of ScvO2 and SvO2 in both hemodynamically stable and shocked patients [12]. In stable critically ill patients, ScvO2 was similar to SvO2 (ScvO2 54.7% SD Ô 19.92% vs SvO2 56.9% SDÔ21.16%, p > 0.1). In patients with heart failure, ScvO2 was slightly hig ...
... and co-workers performed the earliest comparison of ScvO2 and SvO2 in both hemodynamically stable and shocked patients [12]. In stable critically ill patients, ScvO2 was similar to SvO2 (ScvO2 54.7% SD Ô 19.92% vs SvO2 56.9% SDÔ21.16%, p > 0.1). In patients with heart failure, ScvO2 was slightly hig ...
Preview this chapter!
... lie behind the flaps of the aortic SL valve. During ventricular diastole, blood in the aorta that backs up behind the aortic SL valve can flow into the coronary arteries. In both coronary thrombosis and coronary embolism (EM-boh-liz-em), a blood clot occludes or plugs up some part of a coronary arte ...
... lie behind the flaps of the aortic SL valve. During ventricular diastole, blood in the aorta that backs up behind the aortic SL valve can flow into the coronary arteries. In both coronary thrombosis and coronary embolism (EM-boh-liz-em), a blood clot occludes or plugs up some part of a coronary arte ...
Dynamics of Left Ventricular Diastolic Filling During Exercise*
... measures of mitral flow velocities, subjects returned 1 week later for an identical test performed at the same time of day. Subjects were asked to duplicate the endurance time achieved on the first test. At the follow-up session, staff members were not aware of the results of the first test. Heart r ...
... measures of mitral flow velocities, subjects returned 1 week later for an identical test performed at the same time of day. Subjects were asked to duplicate the endurance time achieved on the first test. At the follow-up session, staff members were not aware of the results of the first test. Heart r ...
The Heart - Napa Valley College
... Pressures and Their Effect on Capillaries At the arterial end of the capillaries blood pressure forces fluid out of the capillary and into the tissue At the venous end, osmotic pressure draws fluid back into the vessel from the tissue Diffusion is the pressure that draws gasses across the cap ...
... Pressures and Their Effect on Capillaries At the arterial end of the capillaries blood pressure forces fluid out of the capillary and into the tissue At the venous end, osmotic pressure draws fluid back into the vessel from the tissue Diffusion is the pressure that draws gasses across the cap ...
- American Heart Journal
... CKD increased (Table II, all P < .05). Atherothrombotic disease screening was not systematically performed among all these high-risk patients; as CKD severity increased, there was a stepwise decrease in the evaluation of ABI (not done in 58.7% vs 59.2% vs 60.1% vs 61.0% among patients with CrCl ≥90 ...
... CKD increased (Table II, all P < .05). Atherothrombotic disease screening was not systematically performed among all these high-risk patients; as CKD severity increased, there was a stepwise decrease in the evaluation of ABI (not done in 58.7% vs 59.2% vs 60.1% vs 61.0% among patients with CrCl ≥90 ...
Dynamics of Left Ventricular Diastolic Filling
... measures of mitral flow velocities, subjects returned 1 week later for an identical test performed at the same time of day. Subjects were asked to duplicate the endurance time achieved on the first test. At the follow-up session, staff members were not aware of the results of the first test. Heart r ...
... measures of mitral flow velocities, subjects returned 1 week later for an identical test performed at the same time of day. Subjects were asked to duplicate the endurance time achieved on the first test. At the follow-up session, staff members were not aware of the results of the first test. Heart r ...
EKG Workshop – Beyond the Basics - AAIM
... the lead is the coronary sinus or 3) the lead is epicardial rather than transvenous. The supplementary slide for this case shows reliable ventricular pacing with a LBBB pattern as a result of the pacing catheter being in its proper location in the RV apex. 55 year old male – past history of possible ...
... the lead is the coronary sinus or 3) the lead is epicardial rather than transvenous. The supplementary slide for this case shows reliable ventricular pacing with a LBBB pattern as a result of the pacing catheter being in its proper location in the RV apex. 55 year old male – past history of possible ...
Whole Grape Intake Impacts Cardiac Peroxisome
... Abstract—Prolonged hypertension is the leading cause of heart failure. Failing hearts show reduced peroxisome proliferator-activating receptor (PPAR) activity and enhanced nuclear factor B (NF-B) activity, which together modify cardiac inflammation and fibrosis. In vitro studies suggest that phyto ...
... Abstract—Prolonged hypertension is the leading cause of heart failure. Failing hearts show reduced peroxisome proliferator-activating receptor (PPAR) activity and enhanced nuclear factor B (NF-B) activity, which together modify cardiac inflammation and fibrosis. In vitro studies suggest that phyto ...
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.