5 Precordial Pulsations
... The heart is essentially a pump connected to the aorta and the pulmonary artery, both of which are conduits of fluid (blood). Therefore, pure physical principles of hydrodynamics should be sufficient to explain the mechanism of the apical impulse formation with one important anatomical consideration ...
... The heart is essentially a pump connected to the aorta and the pulmonary artery, both of which are conduits of fluid (blood). Therefore, pure physical principles of hydrodynamics should be sufficient to explain the mechanism of the apical impulse formation with one important anatomical consideration ...
EHRA/HRS/APHRS Expert Consensus on Ventricular Arrhythmias
... arrhythmia morphology suggests such a specific aetiology, valvular and right heart morphology and function should be assessed. IIa LOE B (2) Repeat 12-lead ECGs should be considered whenever an inherited arrhythmia syndrome with varying electrocardiographic manifestations or a transient condition (e. ...
... arrhythmia morphology suggests such a specific aetiology, valvular and right heart morphology and function should be assessed. IIa LOE B (2) Repeat 12-lead ECGs should be considered whenever an inherited arrhythmia syndrome with varying electrocardiographic manifestations or a transient condition (e. ...
System into Left Innominate Vein
... venal cava (fig. 1). Keith and associates in aI survey of reported cases found 43 per cent to be of this type. Embryologically the lungs are derived from the foregut with which they share a common Mlood supply. In early stages the pulmonary veitis are derived from the splanchnic plexus and have mult ...
... venal cava (fig. 1). Keith and associates in aI survey of reported cases found 43 per cent to be of this type. Embryologically the lungs are derived from the foregut with which they share a common Mlood supply. In early stages the pulmonary veitis are derived from the splanchnic plexus and have mult ...
cpr + aed programme - Singapore General Hospital
... the body, only about 5% of the oxygen is utilised and hence exhaled air contains approximately 16% oxygen. When mouth to mouth ventilation is done during CPR, there is just sufficient oxygen in the exhaled air to keep the victim alive. Chest compression squeezes the heart between the breastbone and ...
... the body, only about 5% of the oxygen is utilised and hence exhaled air contains approximately 16% oxygen. When mouth to mouth ventilation is done during CPR, there is just sufficient oxygen in the exhaled air to keep the victim alive. Chest compression squeezes the heart between the breastbone and ...
Systolic and Diastolic Abnormalities Reduce the Cardiac Response
... that a small group of men with T2DM had shorter diastolic duration and an increased reliance on late diastolic filling that accompanied smaller end-diastolic and stroke volumes. However, resting measurements may be misleading because they do not represent the loading conditions during exercise, when ...
... that a small group of men with T2DM had shorter diastolic duration and an increased reliance on late diastolic filling that accompanied smaller end-diastolic and stroke volumes. However, resting measurements may be misleading because they do not represent the loading conditions during exercise, when ...
Association between collagen cross
... LVFS while positively correlated with LVEDD and LVESD in FZ group. Conclusion: Increased collagen cross-linking is linked with reduced left ventricular dysfunction and aggravated left ventricular remodeling in this FZ-induced DCM rat model. Keywords: Dilated cardiomyopathy, furazolidone, collagen re ...
... LVFS while positively correlated with LVEDD and LVESD in FZ group. Conclusion: Increased collagen cross-linking is linked with reduced left ventricular dysfunction and aggravated left ventricular remodeling in this FZ-induced DCM rat model. Keywords: Dilated cardiomyopathy, furazolidone, collagen re ...
Several of the cells have drop down menus with them – if you see an
... Last follow-up transplant status: Status at last follow-up Number of hospitalizations in the last year, or since BiV placement if < yr: Number of hospitalizations for any reason in the last year if BiV implanted more than 1 year ago, or since BiV placement in placed < 1 year ago Exclude any follow-u ...
... Last follow-up transplant status: Status at last follow-up Number of hospitalizations in the last year, or since BiV placement if < yr: Number of hospitalizations for any reason in the last year if BiV implanted more than 1 year ago, or since BiV placement in placed < 1 year ago Exclude any follow-u ...
Pulmonary artery intimal sarcoma: poor 18F
... reported a pulmonary intimal sarcoma with a lack of uptake of FDG in PET. It also revealed highly malignant cells, but its cellularity was low with marked interstitial myxoid tissue. Also in our patient, the FDG uptake was not significant, and we decided that the mass was a thrombus with distal embo ...
... reported a pulmonary intimal sarcoma with a lack of uptake of FDG in PET. It also revealed highly malignant cells, but its cellularity was low with marked interstitial myxoid tissue. Also in our patient, the FDG uptake was not significant, and we decided that the mass was a thrombus with distal embo ...
PowerPoint Presentation: An Overview of Ventricular Assist
... of the heart’s ventricles to augment or replace native ventricular function Can be used for the left (L VAD), right (R VAD), or both ventricles (Bi VAD) Are powered by external power sources that connect to the implanted pump via a percutaneous lead (driveline) that exits the body on the right a ...
... of the heart’s ventricles to augment or replace native ventricular function Can be used for the left (L VAD), right (R VAD), or both ventricles (Bi VAD) Are powered by external power sources that connect to the implanted pump via a percutaneous lead (driveline) that exits the body on the right a ...
Mechanism of Ventricular Fibrillation in Hypothermia
... 05 per cent 0 ; , and 5 per cent CO.,. The muscle ...
... 05 per cent 0 ; , and 5 per cent CO.,. The muscle ...
Scientech 2138A AT Manual
... A healthy ECG shows a normal sinus rhythm. This is when each depolarization of the cardiac conduction system creates a P wave, followed by a QRS complex, followed by a T wave. During a normal sinus rhythm, the atria are contracting first (around the time of the P wave), and the ventricles contract s ...
... A healthy ECG shows a normal sinus rhythm. This is when each depolarization of the cardiac conduction system creates a P wave, followed by a QRS complex, followed by a T wave. During a normal sinus rhythm, the atria are contracting first (around the time of the P wave), and the ventricles contract s ...
nt-pro brain natriuretic peptide: new diagnostic tool for heart failure
... significantly higher in patients with heartfailure-associated pleural effusion, compared to others. Our results were in accordance with the recent studies that explored the diagnostic value of BNP and NT-proBNP in the etiology of pleural effusions (2-10). Porcel et al retrospectively examined 117 pa ...
... significantly higher in patients with heartfailure-associated pleural effusion, compared to others. Our results were in accordance with the recent studies that explored the diagnostic value of BNP and NT-proBNP in the etiology of pleural effusions (2-10). Porcel et al retrospectively examined 117 pa ...
The Wenckebach Phenomenon: A Salute and Comment on the
... over the top” of the previous ventricular pulse wave (for example, the 5th and 12th atrial pulse waves), indicating that the atrioventricular pulse interval is longer than the ventricular pulse interval (Marriott HJ. Personal communication). This may be the first time that this phenomenon was docume ...
... over the top” of the previous ventricular pulse wave (for example, the 5th and 12th atrial pulse waves), indicating that the atrioventricular pulse interval is longer than the ventricular pulse interval (Marriott HJ. Personal communication). This may be the first time that this phenomenon was docume ...
Pericarditis in Bovines- A Review - Open Access Journals
... reticular areas with the animals in dorsal or lateral recumbency are indicated to know the presence and position of foreign body. The cardiac shadow may increase with disappearance of phrenicocardiac-pulmonary triangle in positive cases [33]. D. Ultrasonography Reasonable cardiac images can be obtai ...
... reticular areas with the animals in dorsal or lateral recumbency are indicated to know the presence and position of foreign body. The cardiac shadow may increase with disappearance of phrenicocardiac-pulmonary triangle in positive cases [33]. D. Ultrasonography Reasonable cardiac images can be obtai ...
Chapter 6
... mitral valve. The atrial margin of the AVN is apposed to the myocardialized vestibular spine, containing the tendon of Todaro, while the ventricular margin of the AVN is continuous with the bundle of His. The slow pathway of the AVN (green) is a myocardial inferior extension of the compact part of t ...
... mitral valve. The atrial margin of the AVN is apposed to the myocardialized vestibular spine, containing the tendon of Todaro, while the ventricular margin of the AVN is continuous with the bundle of His. The slow pathway of the AVN (green) is a myocardial inferior extension of the compact part of t ...
Results and conclusions: The perceived exertion differed
... Overall it is agreed that more may be learned about complex systems by trying to understand the important patterns of interaction and association across different elements and dimensions of such systems [89]. It appears that the stepping stone for the understanding the complex systems is to start to ...
... Overall it is agreed that more may be learned about complex systems by trying to understand the important patterns of interaction and association across different elements and dimensions of such systems [89]. It appears that the stepping stone for the understanding the complex systems is to start to ...
Isovolumetric Relaxation?
... Several studies have been performed in patients with a variety of myocardial diseases that have identified a prolongation of r. However, it is not clear whether prolongation of represents abnormal myocardial physiology or the effect of excessive load associated with a particular disease process. Acc ...
... Several studies have been performed in patients with a variety of myocardial diseases that have identified a prolongation of r. However, it is not clear whether prolongation of represents abnormal myocardial physiology or the effect of excessive load associated with a particular disease process. Acc ...
Impact of ejection on magnitude and time course of ventricular
... mainly on how loading conditions influence peak contractile strength with less attention given to understanding how load impacts on the dynamics of contraction under the same conditions. Several studies have also indicated that there are differences in features of the contraction time course between ...
... mainly on how loading conditions influence peak contractile strength with less attention given to understanding how load impacts on the dynamics of contraction under the same conditions. Several studies have also indicated that there are differences in features of the contraction time course between ...
Why, where, and when do cardiac myocytes express - AJP
... evidence for InsP3Rs being modulators of cardiomyocyte signaling. The central message of the study by Domeier et al. (5a) is that InsP3R activation underlies the positive inotropic action of endothelin-1 (ET-1) on ventricular myocytes. ET-1 is a potent vasoconstrictor hormone that has been shown to ...
... evidence for InsP3Rs being modulators of cardiomyocyte signaling. The central message of the study by Domeier et al. (5a) is that InsP3R activation underlies the positive inotropic action of endothelin-1 (ET-1) on ventricular myocytes. ET-1 is a potent vasoconstrictor hormone that has been shown to ...
Frequently Asked Questions About AEDs
... Is an AED safe to use? An AED is safe to use by anyone who's been trained to operate it. Studies have shown the devices to be 90% sensitive (able 90% of the time to detect a rhythm that should be defibrillated) and 99% specific (able 99% of the time to recommend not shocking when defibrillation is n ...
... Is an AED safe to use? An AED is safe to use by anyone who's been trained to operate it. Studies have shown the devices to be 90% sensitive (able 90% of the time to detect a rhythm that should be defibrillated) and 99% specific (able 99% of the time to recommend not shocking when defibrillation is n ...
The Hypertrophic Cardiomyopathy Program
... it usually affects the left ventricle (the main pumping chamber). The muscle fibers of the heart thicken, making it harder for the heart to relax and let new blood into the chambers. Because the heart can’t fill completely, it cannot send enough blood to the rest of the body during exercise. ...
... it usually affects the left ventricle (the main pumping chamber). The muscle fibers of the heart thicken, making it harder for the heart to relax and let new blood into the chambers. Because the heart can’t fill completely, it cannot send enough blood to the rest of the body during exercise. ...
Health Technology Assessment Report 6 the Use of B Type
... Table 11 - 1 All BNP studies – patient characteristics ................................110 Table 11 - 2 B-type natriuretic peptide studies – results and comments ....112 Table 11 - 3 All NT-proBNP studies – patient characteristics .....................113 Table 11 - 4 NT-proBNP studies – results and ...
... Table 11 - 1 All BNP studies – patient characteristics ................................110 Table 11 - 2 B-type natriuretic peptide studies – results and comments ....112 Table 11 - 3 All NT-proBNP studies – patient characteristics .....................113 Table 11 - 4 NT-proBNP studies – results and ...
IOSR Journal of Dental and Medical Sciences (IOSR-JDMS)
... Idiopathic dilatation of the pulmonary artery is a rare diseasefirst described byWessler and Jaches [1]. The incidence of this disease is 6 cases per 1000 cases of congenital cardiac disorders [2]. Greene et al In 1949 [3] proposed thefollowing diagnostic criteria for this condition: (1) simple dila ...
... Idiopathic dilatation of the pulmonary artery is a rare diseasefirst described byWessler and Jaches [1]. The incidence of this disease is 6 cases per 1000 cases of congenital cardiac disorders [2]. Greene et al In 1949 [3] proposed thefollowing diagnostic criteria for this condition: (1) simple dila ...
PDF
... wall myocardial infarction (Brice and Stone, 1986). Propranolol was given intravenously (cephalic vein) as a bolus injection 3 min before the onset of exercise. A partially counter-balanced design was used: some dogs (6/16) were first exercise-tested under the influence of this β-adrenoceptor antago ...
... wall myocardial infarction (Brice and Stone, 1986). Propranolol was given intravenously (cephalic vein) as a bolus injection 3 min before the onset of exercise. A partially counter-balanced design was used: some dogs (6/16) were first exercise-tested under the influence of this β-adrenoceptor antago ...
contrast echocardiography
... produces no echo, but because the ultrasound scattered by red blood cells at conventional imaging frequencies is very weak—several thousand times weaker than myocardium—and so lies below the displayed dynamic range. Contrast ultrasound results principally from the scattering of incident ultrasound a ...
... produces no echo, but because the ultrasound scattered by red blood cells at conventional imaging frequencies is very weak—several thousand times weaker than myocardium—and so lies below the displayed dynamic range. Contrast ultrasound results principally from the scattering of incident ultrasound a ...
Heart failure
Heart failure (HF), often referred to as congestive heart failure (CHF), occurs when the heart is unable to pump sufficiently to maintain blood flow to meet the body's needs. The terms chronic heart failure (CHF) or congestive cardiac failure (CCF) are often used interchangeably with congestive heart failure. Signs and symptoms commonly include shortness of breath, excessive tiredness, and leg swelling. The shortness of breath is usually worse with exercise, while lying down, and may wake the person at night. A limited ability to exercise is also a common feature.Common causes of heart failure include coronary artery disease including a previous myocardial infarction (heart attack), high blood pressure, atrial fibrillation, valvular heart disease, excess alcohol use, infection, and cardiomyopathy of an unknown cause. These cause heart failure by changing either the structure or the functioning of the heart. There are two main types of heart failure: heart failure due to left ventricular dysfunction and heart failure with normal ejection fraction depending on if the ability of the left ventricle to contract is affected, or the heart's ability to relax. The severity of disease is usually graded by the degree of problems with exercise. Heart failure is not the same as myocardial infarction (in which part of the heart muscle dies) or cardiac arrest (in which blood flow stops altogether). Other diseases that may have symptoms similar to heart failure include obesity, kidney failure, liver problems, anemia and thyroid disease.The condition is diagnosed based on the history of the symptoms and a physical examination with confirmation by echocardiography. Blood tests, electrocardiography, and chest radiography may be useful to determine the underlying cause. Treatment depends on the severity and cause of the disease. In people with chronic stable mild heart failure, treatment commonly consists of lifestyle modifications such as stopping smoking, physical exercise, and dietary changes, as well as medications. In those with heart failure due to left ventricular dysfunction, angiotensin converting enzyme inhibitors or angiotensin receptor blockers along with beta blockers are recommended. For those with severe disease, aldosterone antagonists, or hydralazine plus a nitrate may be used. Diuretics are useful for preventing fluid retention. Sometimes, depending on the cause, an implanted device such as a pacemaker or an implantable cardiac defibrillator may be recommended. In some moderate or severe cases cardiac resynchronization therapy (CRT) may be suggested or cardiac contractility modulation may be of benefit. A ventricular assist device or occasionally a heart transplant may be recommended in those with severe disease despite all other measures.Heart failure is a common, costly, and potentially fatal condition. In developed countries, around 2% of adults have heart failure and in those over the age of 65, this increases to 6–10%. In the year after diagnosis the risk of death is about 35% after which it decreases to below 10% each year. This is similar to the risks with a number of types of cancer. In the United Kingdom the disease is the reason for 5% of emergency hospital admissions. Heart failure has been known since ancient times with the Ebers papyrus commenting on it around 1550 BCE.