FREQUENCY ANALYSIS OF THE ECG BEFORE AND DURING
... The frequency content of the ECG of patients during ventricular fibrillation (VF) has been investigated directly by Agizim (1), Nyg~rds (2) and Hulting (3) and indirectly (by filtering) by Kuo (4) in order to des ign a rel iable automated ECG monitoring system that will detect VF quickly without mis ...
... The frequency content of the ECG of patients during ventricular fibrillation (VF) has been investigated directly by Agizim (1), Nyg~rds (2) and Hulting (3) and indirectly (by filtering) by Kuo (4) in order to des ign a rel iable automated ECG monitoring system that will detect VF quickly without mis ...
ACLS Pharmacology Overview
... Because of this, priority is placed on high quality CPR, Defibrillation, airway management and lastly the use of IV drugs. During Cardiac Arrest: Establish 2 patent IVs (18 gauge or larger) or establish IO line Meds should be followed by 10cc of NS, perform 2 minutes of CPR before next interventio ...
... Because of this, priority is placed on high quality CPR, Defibrillation, airway management and lastly the use of IV drugs. During Cardiac Arrest: Establish 2 patent IVs (18 gauge or larger) or establish IO line Meds should be followed by 10cc of NS, perform 2 minutes of CPR before next interventio ...
atrial fibrillation
... occur in the atrial tissues. 3.2. In the normal heart in sinus rhythm the excitation spreading through the atrial myocardium from the sinus node stimulates contraction in myofilaments that have reached the end of their refractory period. At the normal rate of conduction the spreading wave produces c ...
... occur in the atrial tissues. 3.2. In the normal heart in sinus rhythm the excitation spreading through the atrial myocardium from the sinus node stimulates contraction in myofilaments that have reached the end of their refractory period. At the normal rate of conduction the spreading wave produces c ...
The Cardiac Cycle - Interactive Physiology
... pressure, AV valves open and ventricular filling, phase 1 begins again. ...
... pressure, AV valves open and ventricular filling, phase 1 begins again. ...
MS Word Version - Interactive Physiology
... AV valves open and ventricular filling, phase 1 begins again. ...
... AV valves open and ventricular filling, phase 1 begins again. ...
Lecture 3 + 4 - Cardiac Cycle (2012).
... beat to the beginning of the next is called the cardiac cycle. Cardiac cycle is a complete beat of the heart. Each cycle is initiated by spontaneous generation of an action potential in the sinus node. The cardiac cycle consists of a period of relaxation called ...
... beat to the beginning of the next is called the cardiac cycle. Cardiac cycle is a complete beat of the heart. Each cycle is initiated by spontaneous generation of an action potential in the sinus node. The cardiac cycle consists of a period of relaxation called ...
Patterns of Ventricular Remodeling After Myocardial Infarction
... greater LV mass, and particularly concentric hypertrophy, carry an increased risk for CV events? One possibility is that LV hypertrophy directly predisposes to all of the observed CV clinical consequences. Certainly, it may lead to HF through myocardial functional abnormalities and increased diastol ...
... greater LV mass, and particularly concentric hypertrophy, carry an increased risk for CV events? One possibility is that LV hypertrophy directly predisposes to all of the observed CV clinical consequences. Certainly, it may lead to HF through myocardial functional abnormalities and increased diastol ...
Arrhythmias During the 1st Week of Acute Myocardial Infarction: An
... About 20% of patients show non-sustained VT and only 10% shows more than one run of VT in 24 h.11 2% of patients with MI shows sustained VT within 48 and is often transient and not associated with long-term risk of sudden cardiac death.12 In our study, all the patients with VT had LV dysfunction wit ...
... About 20% of patients show non-sustained VT and only 10% shows more than one run of VT in 24 h.11 2% of patients with MI shows sustained VT within 48 and is often transient and not associated with long-term risk of sudden cardiac death.12 In our study, all the patients with VT had LV dysfunction wit ...
Chapter-20-Cardiac-Cycle
... When the rising pressure exceeds that in the aorta and pulmonary arteries, the semilunar valves are forced open and blood is ejected from the heart as the ventricle muscles shorten This phase of the heartbeat is known as This phase of the heartbeat is known as ...
... When the rising pressure exceeds that in the aorta and pulmonary arteries, the semilunar valves are forced open and blood is ejected from the heart as the ventricle muscles shorten This phase of the heartbeat is known as This phase of the heartbeat is known as ...
Echocardiographic assessment of diastolic function
... cardiac cycle. TDI works by bypassing the high-pass filter which will otherwise displace blood flow while the low frequency Doppler shift of myocardial motion were input directly into an autocorrelator; so that the high-amplitude, low frequency movement of myocardium is detected. It allows detailed ...
... cardiac cycle. TDI works by bypassing the high-pass filter which will otherwise displace blood flow while the low frequency Doppler shift of myocardial motion were input directly into an autocorrelator; so that the high-amplitude, low frequency movement of myocardium is detected. It allows detailed ...
Evaluation of Native Left Ventricular Function During Mechanical
... Various tools have been used to treat patients with profound cardiogenic shock. Fig. 1 shows the current pathway of treatment. Such patients have been treated recently with heart transplantation, sometimes following a period of mechanical circulatory support. A small number of patients recover enoug ...
... Various tools have been used to treat patients with profound cardiogenic shock. Fig. 1 shows the current pathway of treatment. Such patients have been treated recently with heart transplantation, sometimes following a period of mechanical circulatory support. A small number of patients recover enoug ...
Arrhythmias: Hyperfunction
... Fig. 32-4. A, Conduction system of the heart. AV, Atrioventricular; SA, sinoatrial. B, The normal electrocardiogram (ECG) pattern. The P wave represents depolarization of the atria. The QRS complex indicates depolarization of the ventricles. The T wave represents repolarization of the ventricles. Th ...
... Fig. 32-4. A, Conduction system of the heart. AV, Atrioventricular; SA, sinoatrial. B, The normal electrocardiogram (ECG) pattern. The P wave represents depolarization of the atria. The QRS complex indicates depolarization of the ventricles. The T wave represents repolarization of the ventricles. Th ...
Managing Acute Dysrhythmias ALS Guideline 11.9
... of the heart when the patient is in cardiac arrest. Slow rhythms of the heart may be treated with drugs to increase the heart rate such as atropine (anti-cholinergic) or adrenergic agents. Alternately, an electrical impulse may be applied to the heart either internally (internal pacemaker) by cardia ...
... of the heart when the patient is in cardiac arrest. Slow rhythms of the heart may be treated with drugs to increase the heart rate such as atropine (anti-cholinergic) or adrenergic agents. Alternately, an electrical impulse may be applied to the heart either internally (internal pacemaker) by cardia ...
PDF - Circulation: Arrhythmia and Electrophysiology
... to the surrounding tissues by an area of depressed excitability producing entrance conduction disturbances while allowing the impulses to exit is subject to some degree of modulation by electrotonic depolarizations arising in the surrounding tissues, that is, depolarization of the surrounding field ...
... to the surrounding tissues by an area of depressed excitability producing entrance conduction disturbances while allowing the impulses to exit is subject to some degree of modulation by electrotonic depolarizations arising in the surrounding tissues, that is, depolarization of the surrounding field ...
rhytmcen
... The heart may go right back into the rhythm Chemical conversion is slower, but leads to conditions more likely to allow permanent conversion. However the drugs used (class 1a and 3) can all cause major dysrhythmias and cardiodepression. Digoxin is slower but won’t cause cardiodepression ...
... The heart may go right back into the rhythm Chemical conversion is slower, but leads to conditions more likely to allow permanent conversion. However the drugs used (class 1a and 3) can all cause major dysrhythmias and cardiodepression. Digoxin is slower but won’t cause cardiodepression ...
Sudden cardiac death
... In hypertrophic cardiomyopathy, sudden death often occurs in young adults who usually have had no prior cardiac symptoms. Polymorphic ventricular tachycardia or primary ventricular fibrillation appear to be the initial arrhythmia at the time of cardiac arrest. Patients with hypertrophic cardiomyopat ...
... In hypertrophic cardiomyopathy, sudden death often occurs in young adults who usually have had no prior cardiac symptoms. Polymorphic ventricular tachycardia or primary ventricular fibrillation appear to be the initial arrhythmia at the time of cardiac arrest. Patients with hypertrophic cardiomyopat ...
The prevalence and long-term outcomes of extreme right ventricular
... 6.7% in Chinese HCM patients . Patients with extreme RVH tended to be younger（p=0.02）and more women involved（p=0.01）. The 10 years probability of cardiovascular mortality was significantly greater in extreme RVH group(log-rank, P= 0.017) Nevertheless cardiovascular morbidity were similar（p=0.07）,amo ...
... 6.7% in Chinese HCM patients . Patients with extreme RVH tended to be younger（p=0.02）and more women involved（p=0.01）. The 10 years probability of cardiovascular mortality was significantly greater in extreme RVH group(log-rank, P= 0.017) Nevertheless cardiovascular morbidity were similar（p=0.07）,amo ...
Arrhythmogenic Right Ventricular Dysplasia / Cardiomyopathy : A
... arrhythmias which may lead to sudden death, most often in young people and athletes. ARVD/C is difficult to diagnose, although standardized diagnostic criteria have been proposed, based on the presence of major and minor criteria encompassing electrocardiographic, arrhythmic, morphofunctional, histo ...
... arrhythmias which may lead to sudden death, most often in young people and athletes. ARVD/C is difficult to diagnose, although standardized diagnostic criteria have been proposed, based on the presence of major and minor criteria encompassing electrocardiographic, arrhythmic, morphofunctional, histo ...
EKG Update
... node, has narrow complex. Associated with inferior MI. Look for group beating due to shortening of RR interval. Non-conducted P wave is < 2 RR. 2nd strip: Mobitz 2. PR unchanged with dropped QRS. Block is in His and may have wide complex. Associated with anterior MI. atropine 3rd strip: 2:1. Could b ...
... node, has narrow complex. Associated with inferior MI. Look for group beating due to shortening of RR interval. Non-conducted P wave is < 2 RR. 2nd strip: Mobitz 2. PR unchanged with dropped QRS. Block is in His and may have wide complex. Associated with anterior MI. atropine 3rd strip: 2:1. Could b ...
Coronary Sinus Dissection during Left Ventricular Pacing Electrode
... threshold and infection,3) but occurrence is rare. Alonso et al.3) reported that CS dissection resulted in two patients who had increasing stimulation thresholds because of the removal of a chronically implanted CS pacing lead. Therefore there was no clinical impact on either of these patients, and ...
... threshold and infection,3) but occurrence is rare. Alonso et al.3) reported that CS dissection resulted in two patients who had increasing stimulation thresholds because of the removal of a chronically implanted CS pacing lead. Therefore there was no clinical impact on either of these patients, and ...
Anger, ventricular arrhythmias and sudden death
... Indirect and circumstantial evidence has strongly suggested that psychological stress may be an important factor in the development of malignant ventricular arrhythmias and sudden death (1013). Sympathetic arousal can trigger arrhythmic events (10). Ventricular tachycardia, like sudden death, occurs ...
... Indirect and circumstantial evidence has strongly suggested that psychological stress may be an important factor in the development of malignant ventricular arrhythmias and sudden death (1013). Sympathetic arousal can trigger arrhythmic events (10). Ventricular tachycardia, like sudden death, occurs ...
Left ventricular wall mechanics in hypertension
... This study was undertaken to define the relationship between the extent of left ventricular hypertrophy and left ventricular systolic performance in hypertensive patients. Left ventricular cavity measurements and wall thickness at the end diastole and end systole and shortening fraction were obtaine ...
... This study was undertaken to define the relationship between the extent of left ventricular hypertrophy and left ventricular systolic performance in hypertensive patients. Left ventricular cavity measurements and wall thickness at the end diastole and end systole and shortening fraction were obtaine ...
Domperidone: ventricular arrhythmia and sudden death (continued)
... of gastroesophageal reflux disease, despite its uncertain efficacy. The intravenous form was withdrawn from the market in the 1980s following deaths due to cardiac arrhythmias. QT prolongation leading to cardiac arrhythmias, including life-threatening torsades de pointes, has also been attributed to ...
... of gastroesophageal reflux disease, despite its uncertain efficacy. The intravenous form was withdrawn from the market in the 1980s following deaths due to cardiac arrhythmias. QT prolongation leading to cardiac arrhythmias, including life-threatening torsades de pointes, has also been attributed to ...
Idiopathic Ventricular Tachycardia: Transcatheter Ablation
... chronically. Side effects and specific contraindications may limit the use of pharmacologic treatment without reducing the patients’ symptoms. Furthermore, some drugs could induce significant adverse effects that includes negative inotropism and extra-cardiac toxicities, especially harmful if used i ...
... chronically. Side effects and specific contraindications may limit the use of pharmacologic treatment without reducing the patients’ symptoms. Furthermore, some drugs could induce significant adverse effects that includes negative inotropism and extra-cardiac toxicities, especially harmful if used i ...
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.