“Right Bundle Branch Block without Overt Heart Disease Predicts
... (3) Association with radiation We conducted an analysis of the association between A-bomb radiation and RBBB or pacemaker implantation, but did not observe any significant correlation. It has been reported that high-dose radiotherapy can cause cardiac conduction disturbance. In this study, however, ...
... (3) Association with radiation We conducted an analysis of the association between A-bomb radiation and RBBB or pacemaker implantation, but did not observe any significant correlation. It has been reported that high-dose radiotherapy can cause cardiac conduction disturbance. In this study, however, ...
Reduction of QRS duration following pulmonary valve replacement
... to have biased the results, as it is the change from preoperative to post-operative rather than the absolute value of the QRS that was considered. The findings of this study are, at least to some degree, different from those reported previously. Therrien et al. 6 showed no overall difference in QRS d ...
... to have biased the results, as it is the change from preoperative to post-operative rather than the absolute value of the QRS that was considered. The findings of this study are, at least to some degree, different from those reported previously. Therrien et al. 6 showed no overall difference in QRS d ...
Heart
... The Heart – Starting from the Outside • Parietal pericardium - outer layer of the pericardium – The pericardium has outer and inner coats • The outer coat is tough and thickened, loosely cloaks the heart. ...
... The Heart – Starting from the Outside • Parietal pericardium - outer layer of the pericardium – The pericardium has outer and inner coats • The outer coat is tough and thickened, loosely cloaks the heart. ...
Dynamic Analysis of Heart Rate May Predict Subsequent
... were sampled digitally and transferred to a microcomputer for analysis.9 RR intervals were edited manually and non-sinus beats were deleted. The sinus origin of the RR intervals was confirmed by printing out the questionable portions of electrocardiograms with visual confirmation. In the final analy ...
... were sampled digitally and transferred to a microcomputer for analysis.9 RR intervals were edited manually and non-sinus beats were deleted. The sinus origin of the RR intervals was confirmed by printing out the questionable portions of electrocardiograms with visual confirmation. In the final analy ...
Mitral Valve Dysplasia in Dogs - Veterinary Specialty Services
... Dogs with mild forms of MVD, such as those that exhibit no symptoms (discussed further below) and have only mild changes on their chest x-rays and echocardiogram, may not require any specific therapy. For those with moderate to severe forms of MVD based on symptoms or echocardiographic abnormalities ...
... Dogs with mild forms of MVD, such as those that exhibit no symptoms (discussed further below) and have only mild changes on their chest x-rays and echocardiogram, may not require any specific therapy. For those with moderate to severe forms of MVD based on symptoms or echocardiographic abnormalities ...
Atrial Fibrillation
... the heart’s two upper chambers to contract very fast and irregularly, or fibrillate. During an episode, blood pools in the atria and isn’t pumped completely into the heart’s two lower chambers. As a result, the heart’s upper and lower chambers don’t work together as they should and the body may not ...
... the heart’s two upper chambers to contract very fast and irregularly, or fibrillate. During an episode, blood pools in the atria and isn’t pumped completely into the heart’s two lower chambers. As a result, the heart’s upper and lower chambers don’t work together as they should and the body may not ...
Technical Editing
... and it may answer questions that patients neglect to ask during consultation. The definition is printed on an 8 1/2 x 11-inch page and folded in half for a two-page look. Analyze the document’s readers and possible uses in more depth, evaluate the document, and establish editing objectives for conte ...
... and it may answer questions that patients neglect to ask during consultation. The definition is printed on an 8 1/2 x 11-inch page and folded in half for a two-page look. Analyze the document’s readers and possible uses in more depth, evaluate the document, and establish editing objectives for conte ...
UCLA is first center in the Western United States to
... Of the more than 200,000 people who have a cardiac pacemaker or cardioverter defibrillator (ICD) implanted each year, it is estimated that up to three-fourths will face a medical situation in their lifetime that would normally call for an MRI. But MRIs have traditionally not been performed on these ...
... Of the more than 200,000 people who have a cardiac pacemaker or cardioverter defibrillator (ICD) implanted each year, it is estimated that up to three-fourths will face a medical situation in their lifetime that would normally call for an MRI. But MRIs have traditionally not been performed on these ...
Section 2: Assessment Tools and Diagnostic Testing
... In atrial tachycardia because the impulse follows the normal conduction pathway, an upright P wave occurs before every QRS complex. The PR intervals remain with the established normal range of 0.12 to 0.20 second, and the QRS complexes are less than 0.12 second. The EKG is symmetric, with all the P ...
... In atrial tachycardia because the impulse follows the normal conduction pathway, an upright P wave occurs before every QRS complex. The PR intervals remain with the established normal range of 0.12 to 0.20 second, and the QRS complexes are less than 0.12 second. The EKG is symmetric, with all the P ...
Arrhythmias: Hyperfunction
... Almost always transient and well tolerated May be a warning signal of a more serious AV conduction disturbance ...
... Almost always transient and well tolerated May be a warning signal of a more serious AV conduction disturbance ...
Presentation
... •The SA node "fires" (sends its impulse) about 60-100 times per minute for the average adult. 60-100 bmp is the normal adult heart rate. • The heart rhythm will be regular and constant, meaning that the waves will occur at regular intervals (versus being irregular, occuring at varying intervals) ...
... •The SA node "fires" (sends its impulse) about 60-100 times per minute for the average adult. 60-100 bmp is the normal adult heart rate. • The heart rhythm will be regular and constant, meaning that the waves will occur at regular intervals (versus being irregular, occuring at varying intervals) ...
Review: ACE inhibitors reduce mortality and
... for in statistical models. For example, despite apparent similarity in risk status of patients in the negative PEACE trial and the positive HOPE and EUROPA trials, the placebo group in the PEACE trial had a lower event rate than the active treatment group in the HOPE trial. It may be that the cumula ...
... for in statistical models. For example, despite apparent similarity in risk status of patients in the negative PEACE trial and the positive HOPE and EUROPA trials, the placebo group in the PEACE trial had a lower event rate than the active treatment group in the HOPE trial. It may be that the cumula ...
Programming a CRT Device When a Left Ventricular Lead is Not Used
... CRT-P Systems from Boston Scientific - INVIVE Indications The INVIVE cardiac resynchronization therapy pacemaker (CRT-Ps) is indicated for patients who have moderate to severe heart failure (NYHA Class III/IV) including left ventricular dysfunction (EF ≤ 35%) and QRS duration ≥ 120 ms and remain sym ...
... CRT-P Systems from Boston Scientific - INVIVE Indications The INVIVE cardiac resynchronization therapy pacemaker (CRT-Ps) is indicated for patients who have moderate to severe heart failure (NYHA Class III/IV) including left ventricular dysfunction (EF ≤ 35%) and QRS duration ≥ 120 ms and remain sym ...
Understanding Contractility: Cardiac Inotropy
... Resting tension (RT) and work are significantly different. lowering of systolic calcium release and diastolic Peak developed force (PDF) is not (1). calcium reuptake. These molecular changes lead to physiological (heart function/hemodynamic) alterations that heavily influence inotropy. Studies in is ...
... Resting tension (RT) and work are significantly different. lowering of systolic calcium release and diastolic Peak developed force (PDF) is not (1). calcium reuptake. These molecular changes lead to physiological (heart function/hemodynamic) alterations that heavily influence inotropy. Studies in is ...
Successful Vaginal Delivery in a Woman with Tetralogy of Fallot and
... and cardiologist with special training in adult congenital heart disease.2 Before pregnancy, a complete clinical assessment should be made, including medical history, clinical examination, oxygen saturation, ECG, chest radiography and echocardiography. Treadmill exercise testing has a significant ut ...
... and cardiologist with special training in adult congenital heart disease.2 Before pregnancy, a complete clinical assessment should be made, including medical history, clinical examination, oxygen saturation, ECG, chest radiography and echocardiography. Treadmill exercise testing has a significant ut ...
Impact of Cardiac Resynchronization Therapy Using
... the changes in aortic pulse pressure and maximal upward slope of the LV systolic pressure curve (⫹dP/dt) (2). Pacing protocol. For intra-individual comparisons of the primary end point of the trial—improvement of functional capacity (6)—patients were randomized to one month of optimized univentricul ...
... the changes in aortic pulse pressure and maximal upward slope of the LV systolic pressure curve (⫹dP/dt) (2). Pacing protocol. For intra-individual comparisons of the primary end point of the trial—improvement of functional capacity (6)—patients were randomized to one month of optimized univentricul ...
Prediction of Adverse Outcomes in Patients with Congestive Heart
... One patient had a BNP of 11,264 pg/mL upon admission (normal range is 0-100 pg/mL) that increased to 64,601 pg/mL ...
... One patient had a BNP of 11,264 pg/mL upon admission (normal range is 0-100 pg/mL) that increased to 64,601 pg/mL ...
1166-5584-2-SM - Saudi Medical Journal
... puerperants can tolerate these hemodynamic changes, those who experience cardiovascular diseases may be at risk of heart failure. Some types of central core myopathies and nemaline rod myopathies, which involve mutations of the ryanodine receptor type 1 gene, are thought to be associated with a hig ...
... puerperants can tolerate these hemodynamic changes, those who experience cardiovascular diseases may be at risk of heart failure. Some types of central core myopathies and nemaline rod myopathies, which involve mutations of the ryanodine receptor type 1 gene, are thought to be associated with a hig ...
Capture and fusion beats during atrial fibrillation and ventricular
... QRS beats, resembling sinus QRS complex, were then observed (fig 2). Discussion These cases illustrate two uncommon findings, initiation of idiopathic VT during AF and the occurrence of fusion and capture beats following atrioventricular (AV) conduction, during simultaneous VT and AF. AF provides ra ...
... QRS beats, resembling sinus QRS complex, were then observed (fig 2). Discussion These cases illustrate two uncommon findings, initiation of idiopathic VT during AF and the occurrence of fusion and capture beats following atrioventricular (AV) conduction, during simultaneous VT and AF. AF provides ra ...
Impact of preload changes on positive and negative left ventricular
... cardiography parameter EMAT provides an accurate, convenient, and cost-effective way to assess alterations in LV function, and therefore, augments the well understood third heart sound.19 This is especially important in the assessment of HF patients, where biomarkers are primarily used in the acute ...
... cardiography parameter EMAT provides an accurate, convenient, and cost-effective way to assess alterations in LV function, and therefore, augments the well understood third heart sound.19 This is especially important in the assessment of HF patients, where biomarkers are primarily used in the acute ...
A transcatheter intracardiac shunt device for heart failure with
... Hasenfuß, G. et al. (2016) A transcatheter intracardiac shunt device for heart failure with preserved ejection fraction (REDUCE LAP-HF): a multicentre, open-label, ...
... Hasenfuß, G. et al. (2016) A transcatheter intracardiac shunt device for heart failure with preserved ejection fraction (REDUCE LAP-HF): a multicentre, open-label, ...
itive sports that pose a danger of bodily collision because such
... Recommendations: 1. Athletes with a structurally normal heart and normal cardiac function, with no history of syncope or near syncope, a narrow QRS complex, ventricular rates at rest greater than 40 to 50 beats/min increasing appropriately with exertion, no or only occasional premature ventricular c ...
... Recommendations: 1. Athletes with a structurally normal heart and normal cardiac function, with no history of syncope or near syncope, a narrow QRS complex, ventricular rates at rest greater than 40 to 50 beats/min increasing appropriately with exertion, no or only occasional premature ventricular c ...
ECG (Electro Cardio Gram)
... potential on the body surface near the heart and also gets carried all over the body. By some sensitive equipment the electrical potential can be recorded graphically which is known as electro cardiogram. In an ECG normally upward movement of line represents depolarisation and downward movement repr ...
... potential on the body surface near the heart and also gets carried all over the body. By some sensitive equipment the electrical potential can be recorded graphically which is known as electro cardiogram. In an ECG normally upward movement of line represents depolarisation and downward movement repr ...
Cardiac contractility modulation
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Cardiac contractility modulation (CCM) is a treatment for patients with moderate to severe left ventricular systolic heart failure (NYHA class II–IV). The short- and long-term use of this therapy enhances both the strength of ventricular contraction and the heart’s pumping capacity. The CCM mechanism is based on stimulation of the cardiac muscle by non-excitatory electrical signals (NES). CCM treatment is delivered by a pacemaker-like device that applies the NES, adjusted to and synchronized with the electrical action in the cardiac cycle.In CCM therapy, electrical stimulation is applied to the cardiac muscle during the absolute refractory period. In this phase of the cardiac cycle, electrical signals cannot trigger new cardiac muscle contractions, hence this type of stimulation is known as a non-excitatory stimulation. However, the electrical CCM signals increase the influx of calcium ions into the cardiac muscle cells (cardiomyocytes). In contrast to other electrical stimulation treatments for heart failure, such as pacemaker therapy or implantable cardioverter defibrillators (ICD), CCM does not affect the cardiac rhythm directly. Rather, the aim is to enhance the heart’s natural contraction (the native cardiac contractility) sustainably over long periods of time. Furthermore, unlike most interventions that increase cardiac contractility, CCM is not associated with an unfavorable increase in oxygen demand by the heart (measured in terms of Myocardial Oxygen Consumption or MVO2). This may be explained by the beneficial effect CCM has in improving cardiac efficiency. A meta-analysis in 2014 and an overview of device-based treatment options in heart failure in 2013 concluded that CCM treatment is safe, that it is generally beneficial to patients and that CCM treatment increases the exercise tolerance (ET) and quality of life (QoL) of patients. Furthermore, preliminary long-term survival data shows that CCM is associated with lower long-term mortality in heart failure patients when compared with expected rates among similar patients not treated with CCM.