The Monophasic Action Potential in Clinical Cardiology
... Fig. 4 Rate-dependent EAD formation in humans. Tracings are ECG lead V4, bipolar right atrial electrogram (RA), and a monophasic action potential recording (MAP) from the right ventricular outflow tract. The MAP recording was obtained using a contact electrode as described by Franz.2 (A) A single si ...
... Fig. 4 Rate-dependent EAD formation in humans. Tracings are ECG lead V4, bipolar right atrial electrogram (RA), and a monophasic action potential recording (MAP) from the right ventricular outflow tract. The MAP recording was obtained using a contact electrode as described by Franz.2 (A) A single si ...
Atrial Ejection Force in Systemic Autoimmune Diseases
... [1–7]. From these studies it was concluded that abnormalities in the diastolic filling pattern of the left ventricle represent one of the earliest indicators of cardiac involvement in systemic autoimmune disease: in most of the patients analyzed, an alteration in left ventricular diastolic function ...
... [1–7]. From these studies it was concluded that abnormalities in the diastolic filling pattern of the left ventricle represent one of the earliest indicators of cardiac involvement in systemic autoimmune disease: in most of the patients analyzed, an alteration in left ventricular diastolic function ...
Feline Cardiomyopathies - Acapulco-Vet
... advanced disease; many felines will remain without clinical signs for a long time. When they show clinical signs, dyspnoea is the most common complaint, but often nonspecific signs like anorexia and lethargy are the only indicators for the presence of heart failure. One has to be aware that in cats ...
... advanced disease; many felines will remain without clinical signs for a long time. When they show clinical signs, dyspnoea is the most common complaint, but often nonspecific signs like anorexia and lethargy are the only indicators for the presence of heart failure. One has to be aware that in cats ...
PDF
... cardiovascular system responds to various pathologies [1, 2]. Thus, it is an important noninvasive marker which can be computed either by time domain or frequency domain analysis of instantaneous heart rate (IHR). In the clinical setting, the IHR is measured using the heart rate in beats/min and is ...
... cardiovascular system responds to various pathologies [1, 2]. Thus, it is an important noninvasive marker which can be computed either by time domain or frequency domain analysis of instantaneous heart rate (IHR). In the clinical setting, the IHR is measured using the heart rate in beats/min and is ...
DOC
... cardiovascular system responds to various pathologies [1, 2]. Thus, it is an important noninvasive marker which can be computed either by time domain or frequency domain analysis of instantaneous heart rate (IHR). In the clinical setting, the IHR is measured using the heart rate in beats/min and is ...
... cardiovascular system responds to various pathologies [1, 2]. Thus, it is an important noninvasive marker which can be computed either by time domain or frequency domain analysis of instantaneous heart rate (IHR). In the clinical setting, the IHR is measured using the heart rate in beats/min and is ...
Cardiac arrhythmias in IHD as detected by Holter monitoring
... group so there is significant correlation between IHD and AF [p value less than 0.05], some author describe that IHD is most common cause of atrial fibrillation (2) , mechanism behind that ventricular ischemia cause increased intra-atrial pressure and cause AF or less commonly due to atrial ischemia ...
... group so there is significant correlation between IHD and AF [p value less than 0.05], some author describe that IHD is most common cause of atrial fibrillation (2) , mechanism behind that ventricular ischemia cause increased intra-atrial pressure and cause AF or less commonly due to atrial ischemia ...
Dispersion of QT interval in premature ventricular beats
... premature beats on standard 12-lead ECG, the QTd-V was calculated as a difference between maximum and minimum QT interval in premature ventricular beats. During follow-up for 26f 19 months the arrhythmic events (sustained ventricular tachycardia, ventricular fibrillation or sudden cardiac death) wer ...
... premature beats on standard 12-lead ECG, the QTd-V was calculated as a difference between maximum and minimum QT interval in premature ventricular beats. During follow-up for 26f 19 months the arrhythmic events (sustained ventricular tachycardia, ventricular fibrillation or sudden cardiac death) wer ...
Comparison of the Force-Velocity Relation
... during the control state was ± 0.38 cm/sec and ± 34.8 g, respectively. 2. Effects of norepinephrine. In the seven experiments in which norepinephrine was infused, Po always increased; these increases ranged from 20.4* to 45.1%, and averaged 32.7?. In addition, maximum VCE was always augmented, the i ...
... during the control state was ± 0.38 cm/sec and ± 34.8 g, respectively. 2. Effects of norepinephrine. In the seven experiments in which norepinephrine was infused, Po always increased; these increases ranged from 20.4* to 45.1%, and averaged 32.7?. In addition, maximum VCE was always augmented, the i ...
Lecture 7 Chapter 13:Therapeutic/Prosthetic
... 6. Draw the 2 possible of paddles placement in the case of external electrodes. 7. Can one use a defibrillator with a patient on a OR table? Why? ...
... 6. Draw the 2 possible of paddles placement in the case of external electrodes. 7. Can one use a defibrillator with a patient on a OR table? Why? ...
English - SciELO México
... cardiac activity, described by the English A. Keith and M.W. Flack in 1907.1 It is located in the sulcus terminalis and extends from the recess of the right atrial appendage to the intercaval band.2 The atrioventricular conduction system originates in the homonymous node (atrioventricular node) iden ...
... cardiac activity, described by the English A. Keith and M.W. Flack in 1907.1 It is located in the sulcus terminalis and extends from the recess of the right atrial appendage to the intercaval band.2 The atrioventricular conduction system originates in the homonymous node (atrioventricular node) iden ...
Jake - wendyblount.com
... Potassium supplementation is often necessary Untreated hypokalemia can predispose to arrhythmia, especially if on digitalis ...
... Potassium supplementation is often necessary Untreated hypokalemia can predispose to arrhythmia, especially if on digitalis ...
GE EK-Pro Arrhythmia Algorithm
... A multi-lead arrhythmia algorithm uses more than one ECG lead for detection and analysis of cardiac arrhythmias. The performance of a multi-lead algorithm, in general, may exceed that of a single-lead algorithm. In noisy situations, there might be noise present on some leads, while the signal in oth ...
... A multi-lead arrhythmia algorithm uses more than one ECG lead for detection and analysis of cardiac arrhythmias. The performance of a multi-lead algorithm, in general, may exceed that of a single-lead algorithm. In noisy situations, there might be noise present on some leads, while the signal in oth ...
External Cardiac Defibrillators for the Prevention of Sudden Death
... perform the same tasks as an AICD, without requiring any invasive procedures. It consists of a vest that is worn continuously underneath the patient’s clothing. Part of this vest is the ‘electrode belt’ that contains the cardiac monitoring electrodes, and the therapy electrodes that deliver a counte ...
... perform the same tasks as an AICD, without requiring any invasive procedures. It consists of a vest that is worn continuously underneath the patient’s clothing. Part of this vest is the ‘electrode belt’ that contains the cardiac monitoring electrodes, and the therapy electrodes that deliver a counte ...
5- Normal electrocardiogram
... 3-State the relationship between the direction of cardiac vector with the direction (-ve, +ve) and amplitude of an ECG waves. 4-Draw diagram indicting the axes of limb leads. The electrocardiogram: Because the body fluid is good conductors, algebraic sum of the action potentials of myocardial fibers ...
... 3-State the relationship between the direction of cardiac vector with the direction (-ve, +ve) and amplitude of an ECG waves. 4-Draw diagram indicting the axes of limb leads. The electrocardiogram: Because the body fluid is good conductors, algebraic sum of the action potentials of myocardial fibers ...
Document
... Physical examination findings can vary enormously; one patient may be comfortable in bed, with normal examination results, while another may be in severe pain with significant respiratory distress requiring ventilatory support. •Pallor associated with cool, clammy skin and diaphoresis occur commonly ...
... Physical examination findings can vary enormously; one patient may be comfortable in bed, with normal examination results, while another may be in severe pain with significant respiratory distress requiring ventilatory support. •Pallor associated with cool, clammy skin and diaphoresis occur commonly ...
Historical Review Accelerated Idioventricular Rhythm: History and
... Osmancik et al [42], confirmed that the value of AIVR alone as a criteria for reperfusion is low, but in addition to normalization of the ST-segment, the probability of successful reperfusion is higher. Conclusions This intriguing arrhythmia could manifest in several different clinical scenarios. Th ...
... Osmancik et al [42], confirmed that the value of AIVR alone as a criteria for reperfusion is low, but in addition to normalization of the ST-segment, the probability of successful reperfusion is higher. Conclusions This intriguing arrhythmia could manifest in several different clinical scenarios. Th ...
Pressure Events of the Cardiac Cycle in the Dog
... atrium and ventricle appear to be practically equal, but in some records a brief reversal of the atrioventricular pressure gradient can be detected following the a wave. Ventricular systole begins at B as the pressure starts to rise, slowly at first then more rapidly. The c wave of the atrial pulse ...
... atrium and ventricle appear to be practically equal, but in some records a brief reversal of the atrioventricular pressure gradient can be detected following the a wave. Ventricular systole begins at B as the pressure starts to rise, slowly at first then more rapidly. The c wave of the atrial pulse ...
Ventricular Remodeling
... extent systolic strain are reduced. Global systolic function is typically normal or supra-normal until endstage disease, and diastolic dysfunction develops early in the process. LV remodeling seen in the setting of aortic stenosis or sub-aortic membrane (fixed outlet obstructions) is similar to that ...
... extent systolic strain are reduced. Global systolic function is typically normal or supra-normal until endstage disease, and diastolic dysfunction develops early in the process. LV remodeling seen in the setting of aortic stenosis or sub-aortic membrane (fixed outlet obstructions) is similar to that ...
Adam, Jagdish Butany and Jean L. Rouleau
... Methods and Results—Ligation of a coronary artery was used to create an MI in rats (n⫽266). Survivors were then randomized 20 days after MI to either probucol 61 mg · kg⫺1 · d⫺1 or vehicle and followed up for a total of 100 days after MI. Studies of cardiac hemodynamics, LV remodeling, cardiac apopt ...
... Methods and Results—Ligation of a coronary artery was used to create an MI in rats (n⫽266). Survivors were then randomized 20 days after MI to either probucol 61 mg · kg⫺1 · d⫺1 or vehicle and followed up for a total of 100 days after MI. Studies of cardiac hemodynamics, LV remodeling, cardiac apopt ...
View Full Page PDF - AJP - Regulatory, Integrative and Comparative
... reflex with afferent fibers running through the dorsal roots. It is important to note, however, that surrogate endpoints for VF, such as the absolute number of ectopic beats, may be misleading because spontaneous ventricular ectopy can be suppressed by drugs without subsequent suppression of VF (2). ...
... reflex with afferent fibers running through the dorsal roots. It is important to note, however, that surrogate endpoints for VF, such as the absolute number of ectopic beats, may be misleading because spontaneous ventricular ectopy can be suppressed by drugs without subsequent suppression of VF (2). ...
Wolff-Parkinson-White Syndrome: An Uncommon Cause of
... often caused by ventricular tachycardia and should usually be considered as such until proven otherwise.1,2 As this case illustrates, other causes of wide complex tachycardia that must be considered in the differential diagnosis are PSVT with underlying bundle branch block or aberrancy and preexcita ...
... often caused by ventricular tachycardia and should usually be considered as such until proven otherwise.1,2 As this case illustrates, other causes of wide complex tachycardia that must be considered in the differential diagnosis are PSVT with underlying bundle branch block or aberrancy and preexcita ...
Full Text:PDF - The Turkish Journal of Pediatrics
... patch without ventricular dysfunction (Fig. 1). There was a thinned endomyocardial border surrounding the cavitary defect. Ventricular myocardium was identified in the regions outside the cystic areas. Neither atrioventricular valves nor ventricular outflow tracts were obstructed by the mass. These ...
... patch without ventricular dysfunction (Fig. 1). There was a thinned endomyocardial border surrounding the cavitary defect. Ventricular myocardium was identified in the regions outside the cystic areas. Neither atrioventricular valves nor ventricular outflow tracts were obstructed by the mass. These ...
HERE - Boxer Breed Council
... looked at RV, IVS & LV myocardium from normal dogs and ARVC boxers and found that cardiac ryanodine receptor (RyR2) protein & RNA expression (implicated in ARVC2 in people) were lowest in the RV of normal dogs and were reduced in all chambers in ARVC dogs. This might explain the apparently increased ...
... looked at RV, IVS & LV myocardium from normal dogs and ARVC boxers and found that cardiac ryanodine receptor (RyR2) protein & RNA expression (implicated in ARVC2 in people) were lowest in the RV of normal dogs and were reduced in all chambers in ARVC dogs. This might explain the apparently increased ...
Atrial Fibrillation To Cardiovert or not to Cardiovert ?
... Spontaneous Cardioversion occurs in proportion of pts with short duration AF ...
... Spontaneous Cardioversion occurs in proportion of pts with short duration AF ...
Ventricular fibrillation
Ventricular fibrillation (V-fib or VF) is a condition in which there is uncoordinated contraction of the cardiac muscle of the ventricles in the heart, making them quiver rather than contract properly. Ventricular fibrillation is the most commonly identified arrhythmia in cardiac arrest patients. While there is some activity, the lay person is usually unable to detect it by palpating (feeling) the major pulse points of the carotid and femoral arteries. Such an arrhythmia is only confirmed by electrocardiography. Ventricular fibrillation is a medical emergency that requires prompt Advanced Life Support interventions. If this arrhythmia continues for more than a few seconds, it will likely degenerate further into asystole (""flatline""). This condition results in cardiogenic shock and cessation of effective blood circulation. As a consequence, sudden cardiac death (SCD) will result in a matter of minutes. If the patient is not revived after a sufficient period (within roughly 5 minutes at room temperature), the patient could sustain irreversible brain damage and possibly become brain-dead, due to the effects of cerebral hypoxia. On the other hand, death often occurs if sinus rhythm is not restored within 90 seconds of the onset of VF, especially if it has degenerated further into asystole.