General Questions about AEDs 1. What does AED stand for? AED
... advise a shock only to ventricular fibrillation and fast ventricular tachycardia. The electric current is delivered through the victim's chest wall through adhesive electrode pads. 4. Why are AEDs important? AEDs are important because they strengthen the Chain of Survival. They can restore a n ...
... advise a shock only to ventricular fibrillation and fast ventricular tachycardia. The electric current is delivered through the victim's chest wall through adhesive electrode pads. 4. Why are AEDs important? AEDs are important because they strengthen the Chain of Survival. They can restore a n ...
Assessment of wasted myocardial work: a novel method - AJP
... In the invasive LVP group, LVP was measured by a micromanometer-tipped catheter (Microtip, Millar Instruments), and a fluid-filled catheter connected to an external pressure transducer served as absolute pressure reference. Pressure and strain data were recorded in a synchronized fashion and stored ...
... In the invasive LVP group, LVP was measured by a micromanometer-tipped catheter (Microtip, Millar Instruments), and a fluid-filled catheter connected to an external pressure transducer served as absolute pressure reference. Pressure and strain data were recorded in a synchronized fashion and stored ...
Delaying shock for cardiopulmonary resuscitation
... for determining why performance of CPR would be beneficial during the circulatory phase prior to defibrillation. Does it work in practice? Several studies of animals have shown significant benefit for the CPR first idea. Yakaitis [5] reported that after 5 minutes of VF, dogs that received 1 minute o ...
... for determining why performance of CPR would be beneficial during the circulatory phase prior to defibrillation. Does it work in practice? Several studies of animals have shown significant benefit for the CPR first idea. Yakaitis [5] reported that after 5 minutes of VF, dogs that received 1 minute o ...
Acute Effects of Cardiac Glycosides on Aldosterone Secretion in
... were measured at frequent intervals with a water manometer attached to a polyethylene catheter which was inserted via the femoral vein into the right atrium. All pressures were referred to a level 6 cm. above the table surface. Aldosterone and corticosterone secretion rates were determined by a meth ...
... were measured at frequent intervals with a water manometer attached to a polyethylene catheter which was inserted via the femoral vein into the right atrium. All pressures were referred to a level 6 cm. above the table surface. Aldosterone and corticosterone secretion rates were determined by a meth ...
All About Your Heart Failure Device
... If you have just learned that you need a heart failure device, or you have just had your device implanted, you probably have many questions and a lot of different emotions. Many people who get a heart failure device get the news that they need a device suddenly, before they ever realized they had he ...
... If you have just learned that you need a heart failure device, or you have just had your device implanted, you probably have many questions and a lot of different emotions. Many people who get a heart failure device get the news that they need a device suddenly, before they ever realized they had he ...
Pacemaker Therapy - Boston Scientific
... lead(s). Some risks encountered during the implant procedure may include infection, tissue damage, bleeding, and an irregular heart rhythm. Complications do not happen very often. However, it is important that you talk with your doctor about the risks of having a pacemaker implanted, as well as the ...
... lead(s). Some risks encountered during the implant procedure may include infection, tissue damage, bleeding, and an irregular heart rhythm. Complications do not happen very often. However, it is important that you talk with your doctor about the risks of having a pacemaker implanted, as well as the ...
Temporary epicardial pacing after cardiac surgery
... situations where synchronous modes are contra-indicated. This rarely means anything other than during use of electrocautery, which can interfere with sensing. Limitations • Contra-indicated in atrial tachycardia, atrial fibrillation ⁄ flutter (due to inability to capture the atrium), and AV node blo ...
... situations where synchronous modes are contra-indicated. This rarely means anything other than during use of electrocautery, which can interfere with sensing. Limitations • Contra-indicated in atrial tachycardia, atrial fibrillation ⁄ flutter (due to inability to capture the atrium), and AV node blo ...
M-Mode Echocardiography
... with 2D imaging, is its superior temporal resolution. In the current 2D-directed M-mode, data is acquired at a rate up to 1000 frames per second, compared with 15 to 100 frames per second for 2D echocardiography, depending on sector width and heart rate.1,2 Thus M-mode echocardiography remains impor ...
... with 2D imaging, is its superior temporal resolution. In the current 2D-directed M-mode, data is acquired at a rate up to 1000 frames per second, compared with 15 to 100 frames per second for 2D echocardiography, depending on sector width and heart rate.1,2 Thus M-mode echocardiography remains impor ...
Coronary Artery Spasm is a Nightmare: a Rare Case of Multi Vessel
... spasm [1,2]. Patients with coronary artery spasm typically describe chest pain symptoms, usually occurring in the early hours of the morning with ST-segment elevation on ECG. In severe cases, such as multivessel coronary artery spasm associated arrhythmias may be present ranging from heart block to ...
... spasm [1,2]. Patients with coronary artery spasm typically describe chest pain symptoms, usually occurring in the early hours of the morning with ST-segment elevation on ECG. In severe cases, such as multivessel coronary artery spasm associated arrhythmias may be present ranging from heart block to ...
REVIEW ARTICLE CARDIOVASCULAR SENSORY RECEPTORS
... located in the two atria and veno-atrial junctions, which are stimulated by atrial filling are believed to play an important role in the regulation of body fluid volume and heart rate. Heart rate is influenced also by other sensory receptors e.g. arterial baroreceptors, ventricular receptors, pulmon ...
... located in the two atria and veno-atrial junctions, which are stimulated by atrial filling are believed to play an important role in the regulation of body fluid volume and heart rate. Heart rate is influenced also by other sensory receptors e.g. arterial baroreceptors, ventricular receptors, pulmon ...
PDF-1 - RUcore - Rutgers University
... evidence has shown that such an event is more prevalent in ADHD stimulant users than nonusers. Winterstein et al. echoed the same sentiments in a smaller study performed in 2007. Examining cardiac hospital admissions, her group stated that available case studies of SCD were not representative of the ...
... evidence has shown that such an event is more prevalent in ADHD stimulant users than nonusers. Winterstein et al. echoed the same sentiments in a smaller study performed in 2007. Examining cardiac hospital admissions, her group stated that available case studies of SCD were not representative of the ...
Exercise–based cardiac rehabilitation for heart failure
... The European Society of Cardiology heart failure guidelines firmly recommend regular physical activity and structured exercise training (ET), but this recommendation is still poorly implemented in daily clinical practice outside specialized centres and in the real world of heart failure clinics. The ...
... The European Society of Cardiology heart failure guidelines firmly recommend regular physical activity and structured exercise training (ET), but this recommendation is still poorly implemented in daily clinical practice outside specialized centres and in the real world of heart failure clinics. The ...
Left ventricular function: time-varying elastance and left
... start with ventricular function curves and show how these curves are generated by underlying ventricular pressure–volume characteristics. Understanding ventricular function from a pressure–volume perspective leads to consideration of concepts such as time-varying ventricular elastance and the connec ...
... start with ventricular function curves and show how these curves are generated by underlying ventricular pressure–volume characteristics. Understanding ventricular function from a pressure–volume perspective leads to consideration of concepts such as time-varying ventricular elastance and the connec ...
The outcomes of operations for 539 patients with Ebstein anomaly
... conduction pathways, cryoablation of atrioventricular nodal re-entry tachycardia, or the right-sided maze procedure; (5) consideration of plication of the atrialized right ventricle; (6) reconstruction of the TV when feasible or valve replacement; and (7) excision of redundant right atrial wall (rig ...
... conduction pathways, cryoablation of atrioventricular nodal re-entry tachycardia, or the right-sided maze procedure; (5) consideration of plication of the atrialized right ventricle; (6) reconstruction of the TV when feasible or valve replacement; and (7) excision of redundant right atrial wall (rig ...
Minimally Invasive Cardiac Surgery Current Status and Trends
... much smaller than a sternotomy and more cosmetic within the right infra-mammary fold, particularly in the female patient, but it may also be more painful in the early postoperative period. When the left atrium is small, this more direct right thoracotomy approach gives much better visibility of both ...
... much smaller than a sternotomy and more cosmetic within the right infra-mammary fold, particularly in the female patient, but it may also be more painful in the early postoperative period. When the left atrium is small, this more direct right thoracotomy approach gives much better visibility of both ...
TITLE The effect of caffeine on heart rate OBJECTIVES To
... Caffeine is now a common ingredient of soft drinks such as cola, originally prepared from kola nuts. Research which was carried out shows that soft drinks typically contain about 10 to 15 milligrams of caffeine per serving. Besides, chocolate bars have a high percentage of caffeine content especial ...
... Caffeine is now a common ingredient of soft drinks such as cola, originally prepared from kola nuts. Research which was carried out shows that soft drinks typically contain about 10 to 15 milligrams of caffeine per serving. Besides, chocolate bars have a high percentage of caffeine content especial ...
Regulation of Ventricular Contraction
... by ganglionic blockade with tetraethylammonium chloride. An observation of interest was that, as found by Shipley and Gregg,12 left stellate ganglion stimulation sometimes did not cause an appreciable change in heart rate. In such animals, observations on myocardial contractility were made with and ...
... by ganglionic blockade with tetraethylammonium chloride. An observation of interest was that, as found by Shipley and Gregg,12 left stellate ganglion stimulation sometimes did not cause an appreciable change in heart rate. In such animals, observations on myocardial contractility were made with and ...
Effects of myocardial ischemia on the release of cardiac troponin i in
... cardiac troponin I in human heart tissue. The cytosol fraction was 3% and the myofibril fraction was 97%. Similar percentages of cardiac troponin I were measured in the fractions of cows and dogs. Cardiac troponin I shows a prolonged biphasic release pattern, which is probably the result of the los ...
... cardiac troponin I in human heart tissue. The cytosol fraction was 3% and the myofibril fraction was 97%. Similar percentages of cardiac troponin I were measured in the fractions of cows and dogs. Cardiac troponin I shows a prolonged biphasic release pattern, which is probably the result of the los ...
Maximum Heart Rate during exercise: Reliability of the 220
... for improving its reliability and proposing corrections that increase its precision (4). A well-known and much used formula is the 220-age. The origin of the formula is a superficial estimation based on the observation in a data set collected in 1968 (5). This formula is used, along with other formu ...
... for improving its reliability and proposing corrections that increase its precision (4). A well-known and much used formula is the 220-age. The origin of the formula is a superficial estimation based on the observation in a data set collected in 1968 (5). This formula is used, along with other formu ...
TOC
... Copyright © 2013 American Heart Association, Inc. All rights reserved. Print ISSN: 1941-7640. Online ISSN: 1941-7632 ...
... Copyright © 2013 American Heart Association, Inc. All rights reserved. Print ISSN: 1941-7640. Online ISSN: 1941-7632 ...
Cardiac metabolism measured noninvasively by hyperpolarized
... The chemical shift images were calculated using in-housedeveloped software. The spectroscopic dataset contained one FID from each voxel. The FIDs were exponentially filtered with a signal decay constant of 25 ms and subsequently zero-filled to 1024 points. The corresponding spectra were phase-correcte ...
... The chemical shift images were calculated using in-housedeveloped software. The spectroscopic dataset contained one FID from each voxel. The FIDs were exponentially filtered with a signal decay constant of 25 ms and subsequently zero-filled to 1024 points. The corresponding spectra were phase-correcte ...
Myocardial ischemia
... collateral vessels may begin to carry a greater proportion of blood and provide an alternate means of perfusion for an area of myocardium. These collateral blood vessels may run parallel to the larger coronary arteries and be connected to other small coronary vessels by vascular connections called a ...
... collateral vessels may begin to carry a greater proportion of blood and provide an alternate means of perfusion for an area of myocardium. These collateral blood vessels may run parallel to the larger coronary arteries and be connected to other small coronary vessels by vascular connections called a ...
Left Ventricular Mass in Normal Children and its
... SUMMARY: Echocardiographic measurement of left ventricular mass (LVM) is being used for the diagnosis of left ventricular hypertrophy in children with various cardiovascular diseases. The purposes of this study was to establish normal values of LVM according to weight, height and body surface area ( ...
... SUMMARY: Echocardiographic measurement of left ventricular mass (LVM) is being used for the diagnosis of left ventricular hypertrophy in children with various cardiovascular diseases. The purposes of this study was to establish normal values of LVM according to weight, height and body surface area ( ...
Electrocardiography
Electrocardiography (ECG or EKG*) is the process of recording the electrical activity of the heart over a period of time using electrodes placed on a patient's body. These electrodes detect the tiny electrical changes on the skin that arise from the heart muscle depolarizing during each heartbeat.In a conventional 12 lead ECG, ten electrodes are placed on the patient's limbs and on the surface of the chest. The overall magnitude of the heart's electrical potential is then measured from twelve different angles (""leads"") and is recorded over a period of time (usually 10 seconds). In this way, the overall magnitude and direction of the heart's electrical depolarization is captured at each moment throughout the cardiac cycle. The graph of voltage versus time produced by this noninvasive medical procedure is referred to as an electrocardiogram (abbreviated ECG or EKG).During each heartbeat, a healthy heart will have an orderly progression of depolarization that starts with pacemaker cells in the sinoatrial node, spreads out through the atrium, passes through the atrioventricular node down into the bundle of His and into the Purkinje fibers spreading down and to the left throughout the ventricles. This orderly pattern of depolarization gives rise to the characteristic ECG tracing. To the trained clinician, an ECG conveys a large amount of information about the structure of the heart and the function of its electrical conduction system. Among other things, an ECG can be used to measure the rate and rhythm of heartbeats, the size and position of the heart chambers, the presence of any damage to the heart's muscle cells or conduction system, the effects of cardiac drugs, and the function of implanted pacemakers.