Atrial remodeling due to atrial tachycardia and heart failure
... many experimental and clinical studies. It was well known from clinical practice that AF is a progressive arrhythmia in terms of duration and frequency of episodes in patients in which the arrhythmia is paroxysmal. Finally, in 14-24% of patients with paroxysmal AF persistent AF will develop, also in ...
... many experimental and clinical studies. It was well known from clinical practice that AF is a progressive arrhythmia in terms of duration and frequency of episodes in patients in which the arrhythmia is paroxysmal. Finally, in 14-24% of patients with paroxysmal AF persistent AF will develop, also in ...
Atrial Fibrillation in Children
... diagnostic accuracy greatly increased. Rarely is a neonatal invasive electrophysiological study indicated, but esophageal monitoring and pacing may be performed relatively easily. Additionally, the transition from the fetal circulation to the neonatal circulation puts added stretch and stress on the ...
... diagnostic accuracy greatly increased. Rarely is a neonatal invasive electrophysiological study indicated, but esophageal monitoring and pacing may be performed relatively easily. Additionally, the transition from the fetal circulation to the neonatal circulation puts added stretch and stress on the ...
ICD-10-CM
... With each heartbeat, blood is sent throughout the body, carrying oxygen and nutrients to all of the cells. The heart beats over 100,000 times per day at an average rate of 80 times a minute, and sends 2,000 gallons of blood through the body. It keeps blood flowing through the 60,000 miles of blood v ...
... With each heartbeat, blood is sent throughout the body, carrying oxygen and nutrients to all of the cells. The heart beats over 100,000 times per day at an average rate of 80 times a minute, and sends 2,000 gallons of blood through the body. It keeps blood flowing through the 60,000 miles of blood v ...
Cardiochirurgia universitaria
... During the critical initial hours of MI when acute ischemia progresses to true necrosis, regional systolic dysfunction is already present. However, in this particularly crucial period, measures to restore the balance between O2 demand and delivery can lead to salvage of contractile tissue. Once cell ...
... During the critical initial hours of MI when acute ischemia progresses to true necrosis, regional systolic dysfunction is already present. However, in this particularly crucial period, measures to restore the balance between O2 demand and delivery can lead to salvage of contractile tissue. Once cell ...
Atrial pressure and secretion of atrial natriuretic factor into
... were premedicated with meperidine hydrochloride, promethazine hydrochloride or diazepam before catheterization. The study group consisted of 34 patients (20 men and 14 women) with a mean age of 56 ± 2.5 years (range 18 to 79). Eighteen patients had coronary artery disease, seven had dilated cardiomy ...
... were premedicated with meperidine hydrochloride, promethazine hydrochloride or diazepam before catheterization. The study group consisted of 34 patients (20 men and 14 women) with a mean age of 56 ± 2.5 years (range 18 to 79). Eighteen patients had coronary artery disease, seven had dilated cardiomy ...
View Presentation - Society of Thoracic Radiology
... is likely to encounter. Congenital absence most commonly is partial and on the left. Complete congenital absence is rare. This is thought to be related to regression of the left common cardinal vien, which in turn devascularizes the pleuropericardial membrane, resulting in loss of that portion of th ...
... is likely to encounter. Congenital absence most commonly is partial and on the left. Complete congenital absence is rare. This is thought to be related to regression of the left common cardinal vien, which in turn devascularizes the pleuropericardial membrane, resulting in loss of that portion of th ...
Echocardiography in the Management of Patients with Left
... Recent guidelines endorse the important role of echocardiography in the clinical care of LVAD patients at several stages, including preoperative patient selection, perioperative imaging, postoperative surveillance, optimization of LVAD function, troubleshooting of LVAD alarms, and evaluation of nati ...
... Recent guidelines endorse the important role of echocardiography in the clinical care of LVAD patients at several stages, including preoperative patient selection, perioperative imaging, postoperative surveillance, optimization of LVAD function, troubleshooting of LVAD alarms, and evaluation of nati ...
Temporary epicardial pacing after cardiac surgery
... in the atrium that has been conducted to the ventricle. As this endogenous rhythm is likely to be mechanically more efficient than pacing, the timing cycle is reset, delaying the next atrial spike and allowing the possibility of ongoing conducted endogenous atrial depolarisations completely inhibiti ...
... in the atrium that has been conducted to the ventricle. As this endogenous rhythm is likely to be mechanically more efficient than pacing, the timing cycle is reset, delaying the next atrial spike and allowing the possibility of ongoing conducted endogenous atrial depolarisations completely inhibiti ...
33rd ADVANCED ECHO CONFERENCE
... for no-shows. In the unlikely event the program is cancelled, a full refund of the registration fee will be given, but program hosts are not responsible for any travel or hotel costs you may incur. ...
... for no-shows. In the unlikely event the program is cancelled, a full refund of the registration fee will be given, but program hosts are not responsible for any travel or hotel costs you may incur. ...
Screening for undiagnosed atrial fibrillation in the community
... systemic embolism. The feasibility of screening for silent atrial fibrillation has been demonstrated in a number of populations and many new technologies for atrial fibrillation detection exist, which could improve the efficiency and cost-effectiveness of this process. ...
... systemic embolism. The feasibility of screening for silent atrial fibrillation has been demonstrated in a number of populations and many new technologies for atrial fibrillation detection exist, which could improve the efficiency and cost-effectiveness of this process. ...
Module 3 - Cardiac Arrhythmias-Mechanisms of Arrhythmias
... caffeine or nicotine can lead to arrhythmia in some people. A heart attack or an underlying condition that damages the heart's electrical system also can cause an arrhythmia. These conditions include high blood pressure (hypertension), coronary artery disease, heart failure, overactive or underactiv ...
... caffeine or nicotine can lead to arrhythmia in some people. A heart attack or an underlying condition that damages the heart's electrical system also can cause an arrhythmia. These conditions include high blood pressure (hypertension), coronary artery disease, heart failure, overactive or underactiv ...
Suction Detection And Feedback Control For The Rotary
... adjust the amount of blood flowing through the LVAD. One important challenge in using such a device is the desire to provide the patient with as close to a normal lifestyle as possible until a donor heart becomes available. The development of an appropriate feedback controller that is capable of aut ...
... adjust the amount of blood flowing through the LVAD. One important challenge in using such a device is the desire to provide the patient with as close to a normal lifestyle as possible until a donor heart becomes available. The development of an appropriate feedback controller that is capable of aut ...
Practical diastology André Y Denault, Pierre Couture CITATION
... deceleration time, and a reduction of the E/A ratio. The PVF PW Doppler signal will show an increased S/D ratio. Tissue Doppler of the mitral annulus will demonstrate an Em/Am ratio < 1 while on color M-mode, propagation velocity (Vp) will be decreased. The delayed relaxation abnormality is the most ...
... deceleration time, and a reduction of the E/A ratio. The PVF PW Doppler signal will show an increased S/D ratio. Tissue Doppler of the mitral annulus will demonstrate an Em/Am ratio < 1 while on color M-mode, propagation velocity (Vp) will be decreased. The delayed relaxation abnormality is the most ...
Thesis, Emmanuel Moss 20110625 Final
... 136±28bpm, p<0.002) and atrial isointegral repolarization changes (REPOL∆). In the antegrade group, response was suppressed by vagal decentralization (n=1), Ao/SVC plexi ablation (n=4), and RAGP ablation (n=5). Changes persisted throughout in 2 canines. Surface area of REPOL∆ diminished with success ...
... 136±28bpm, p<0.002) and atrial isointegral repolarization changes (REPOL∆). In the antegrade group, response was suppressed by vagal decentralization (n=1), Ao/SVC plexi ablation (n=4), and RAGP ablation (n=5). Changes persisted throughout in 2 canines. Surface area of REPOL∆ diminished with success ...
Transvenous Temporary Cardiac Pacing
... A more effective and safe, albeit a bit more time consuming, approach utilizes the pacing bipolar electrode catheter as an ECG lead to monitor the advancement and correct endocardial placement of the pacing lead by observing the changes in the endocardial electrogram pattern during passage of the ca ...
... A more effective and safe, albeit a bit more time consuming, approach utilizes the pacing bipolar electrode catheter as an ECG lead to monitor the advancement and correct endocardial placement of the pacing lead by observing the changes in the endocardial electrogram pattern during passage of the ca ...
Determination of Inadvertent Atrial Capture During Para
... from retrograde conduction. Nonetheless, a simple additional maneuver, such as withdrawing the pacing catheter slightly to obtain deliberate atrial capture, invariably shortens the stimatrial interval unless atrial capture was already inadvertently present. A minimum 20-ms change in stim-atrial inte ...
... from retrograde conduction. Nonetheless, a simple additional maneuver, such as withdrawing the pacing catheter slightly to obtain deliberate atrial capture, invariably shortens the stimatrial interval unless atrial capture was already inadvertently present. A minimum 20-ms change in stim-atrial inte ...
Pulmonary Hypertension Advances in Hypertension and
... to the pulmonary circulation and adaptation to high altitude,” added Dr. Krugman. For many years Dr Reeves was a senior member of the Cardiovascular Pulmonary Laboratory of the School of Medicine within the Department of Medicine and most recently played a significant role in the establishment of th ...
... to the pulmonary circulation and adaptation to high altitude,” added Dr. Krugman. For many years Dr Reeves was a senior member of the Cardiovascular Pulmonary Laboratory of the School of Medicine within the Department of Medicine and most recently played a significant role in the establishment of th ...
Catheter Ablation as Treatment for Atrial Fibrillation
... one year. However, most patients who are AF-free at one year remain AF-free at five to six years. Multiple RCTs comparing cryoablation and RFA have found that cryoablation is noninferior to RFA for AF control. RFA and cryoablation differ in adverse effect profiles; for example, cryoablation is assoc ...
... one year. However, most patients who are AF-free at one year remain AF-free at five to six years. Multiple RCTs comparing cryoablation and RFA have found that cryoablation is noninferior to RFA for AF control. RFA and cryoablation differ in adverse effect profiles; for example, cryoablation is assoc ...
Chapter 19
... • Can contract by itself, independent of any signals or stimulation from body • Contracts in response to an electrical current conveyed by a conduction system • Specialized cells in sinoatrial (SA) node, near superior vena cava initiate an electrical impulse ...
... • Can contract by itself, independent of any signals or stimulation from body • Contracts in response to an electrical current conveyed by a conduction system • Specialized cells in sinoatrial (SA) node, near superior vena cava initiate an electrical impulse ...
Gallop Rhythm of the Heart
... left side of the heart in essential hypertension and aortic stenosis, and on the right side in pulmonary hypertension of varied etiology and in pulmonic stenosis. When atrial gallop is present in essential hypertension, there is invariably evidence of left ventricular hypertrophy, either from physic ...
... left side of the heart in essential hypertension and aortic stenosis, and on the right side in pulmonary hypertension of varied etiology and in pulmonic stenosis. When atrial gallop is present in essential hypertension, there is invariably evidence of left ventricular hypertrophy, either from physic ...
PACES/HRS Expert Consensus Statement on the Recognition and
... absolute incidence of these devastating events remains relatively low, at approximately 0.1% per year. A tabular representation of approximate expected risks for atrial arrhythmia, ventricular arrhythmia, AV block, and ventricular dyssynchrony are summarized in Figure 3.2. The prevalence and mechani ...
... absolute incidence of these devastating events remains relatively low, at approximately 0.1% per year. A tabular representation of approximate expected risks for atrial arrhythmia, ventricular arrhythmia, AV block, and ventricular dyssynchrony are summarized in Figure 3.2. The prevalence and mechani ...
PACES/HRS Expert Consensus Statement on the Recognition and
... absolute incidence of these devastating events remains relatively low, at approximately 0.1% per year. A tabular representation of approximate expected risks for atrial arrhythmia, ventricular arrhythmia, AV block, and ventricular dyssynchrony are summarized in Figure 3.2. The prevalence and mechani ...
... absolute incidence of these devastating events remains relatively low, at approximately 0.1% per year. A tabular representation of approximate expected risks for atrial arrhythmia, ventricular arrhythmia, AV block, and ventricular dyssynchrony are summarized in Figure 3.2. The prevalence and mechani ...
All About Your ICD
... Why do I need an ICD? You need an ICD because your physician has determined that you have an electrical problem in your heart that keeps it from functioning properly—a problem that could even be lifethreatening. This electrical problem causes or could cause your heart to beat too rapidly. If your h ...
... Why do I need an ICD? You need an ICD because your physician has determined that you have an electrical problem in your heart that keeps it from functioning properly—a problem that could even be lifethreatening. This electrical problem causes or could cause your heart to beat too rapidly. If your h ...
Pericardial Cyst : A Rare Cause of Pericardial Effusion
... inflammation. It is believed that the patient had developed pericarditis that later caused inflammation of the cyst. The inflammed cyst which abutted the parietal surface of the pleura, led to pleural effusion. Inflammatory process resulted in progression of both the pericardial and pleural effusion ...
... inflammation. It is believed that the patient had developed pericarditis that later caused inflammation of the cyst. The inflammed cyst which abutted the parietal surface of the pleura, led to pleural effusion. Inflammatory process resulted in progression of both the pericardial and pleural effusion ...
Study of the cholinergic system in the heart and its potential
... conclusion: The highest AChE activity was determined in the atria, the lowest activity in the left ventricle and septum. In all compartments, PRiMA AChE and ColQ AChE were observed. Both anchored forms were distributed epicardially on the heart base, colocalized with intracardiac neurons. PRiMA AChE ...
... conclusion: The highest AChE activity was determined in the atria, the lowest activity in the left ventricle and septum. In all compartments, PRiMA AChE and ColQ AChE were observed. Both anchored forms were distributed epicardially on the heart base, colocalized with intracardiac neurons. PRiMA AChE ...
Lutembacher's syndrome
Lutembacher's syndrome is a form of congenital heart disease. Lutembacher's syndrome was first described by a French cardiologist by the name of Rene' Lutembacher (1884–1968) of Paris, France in 1916. Lutembacher syndrome is a rare disease that affects one of the chambers of the heart as well as a valve of the heart. Lutembacher's syndrome is known to affect females more often than males. Lutembacher is an extremely rare disease. Lutembacher's can affect children or adults; the person can either be born with the disorder or develop it later in life.Lutembacher affects more specifically the atria of the heart and the mitral or biscupid valve. The disorder itself is known more specifically as both congenital atrial septal defect (ASD) and acquired mitral stenosis (MS). Congenital (at birth) atrial septal defect refers to a hole being in the septum or wall that separates the two atria; this condition is usually seen in fetuses and infants. Mitral stenosis refers to mitral valve leaflets (or valve flaps) sticking to each other making the opening for blood to pass from the atrium to the ventricles very small. With the valve being so small, blood has difficulty passing through the left atrium into the left ventricle. There are several types of septal defects that may occur with Lutembacher's syndrome: ASD Ostium Secundum or ASD (Primium); Ostium Secundum is the most prevalent.Lutembacher is caused indirectly as the result of heart damage or disorders and not something that is necessarily infectious. Lutembacher's syndrome is caused by either birth defects where the heart fails to close all holes in the walls between the atria or from an episode of rheumatic fever where damage is done to the heart valves such as the mitral valve and resultant in an opening of heart wall between atria. With Lutembacher's syndrome, a fetus or infant is usually seen to have a hole in their heart wall (interatrial) separating their right and left atria. Normally during fetal development, blood bypasses the lungs and is oxygenated from the placenta. Blood passes from the umbilical cord and flows into the left atrium through an opening called the foramen ovale; the formaen ovale is a hole between the two atria. Once a baby is born and the lungs begin to fill with air and the blood flow of the heart changes, a tissue flap (somewhat like a trap door) called the septum primium closes the foramen ovale or hole between the two atria and becomes part of the atrial wall. The failure of the hole between the two atria to close after birth leads to a disorder called ASD primium. The most common problems with an opening found in the heart with Lutembacher's syndrome is Ostium Secundum. Ostium Secundum is a hole that is found within the flap of tissue (septum primium) that will eventually close the hole between the two atria after birth. With either type of ASD, ASD will usually cause the blood flow from the right atrium to skip going to the right ventricle and instead flow to the left atrium. If mitral stenosis (the hardening of flap of tissue known as a valve which opens and closes between the left atrium and ventricle to control blood flow) is also present, blood will flow into the right atrium through the hole between the atria wall instead of flowing into the left ventricle and systemic circulation. Eventually this leads to other problems such as the right ventricle failing and a reduced blood flow to the left ventricle.In addition to the ASD, acquired MS can be present either from an episode of rheumatic fever (the mother has or had rheumatic fever during the pregnancy) or the child being born with the disorder (congenital MS). With the combination of both ASD and MS, the heart can be under severe strain as it tries to move blood throughout the heart and lungs. To correct Lutembacher's syndrome, surgery is often done. There are several types of surgeries depending on the cause of Lutembacher's syndrome(ASD Primium or ASD Ostium Secundum with Mitral Stenosis): Suturing (stitching) or placing a patch of tissue (similar to skin grafting) over the hole to completely close the opening Reconstructing of the mitral and tricuspid valve while patching any holes in the heart Device closure of ASD (e.g. Amplatzer umbrella or CardioSEAL to seal the hole Percutaneous transcatheter therapy Transcatheter therapy of balloon valvuloplasty to correct MS↑ ↑ 2.0 2.1 2.2 2.3 2.4 ↑ 3.0 3.1 3.2 3.3 3.4 ↑ ↑ ↑ 6.0 6.1 6.2 6.3 ↑