Utilization of Fosphenytoin for Digoxin-Induced
... disturbance and confusion, and cardiac dysrhythmia.10 In 10-15% of cases of documented toxicity, an ectopic cardiac rhythm is the first sign of intoxication.7 Digoxin-induced arrhythmia occurs due to a depression of the sinoatrial node and its conduction which can lead to atrioventricular (AV) block ...
... disturbance and confusion, and cardiac dysrhythmia.10 In 10-15% of cases of documented toxicity, an ectopic cardiac rhythm is the first sign of intoxication.7 Digoxin-induced arrhythmia occurs due to a depression of the sinoatrial node and its conduction which can lead to atrioventricular (AV) block ...
Hypertension, Left Ventricular Hypertrophy and Sudden Cardiac
... structural heart changes which increase with age, but most cases occur in apparently healthy people and those classified as low risk.73 Health requirements for diving used by most agencies exclude subjects with severe heart disease.45 However, the average age of divers is increasing and thus the pre ...
... structural heart changes which increase with age, but most cases occur in apparently healthy people and those classified as low risk.73 Health requirements for diving used by most agencies exclude subjects with severe heart disease.45 However, the average age of divers is increasing and thus the pre ...
Interesting ECGs
... Depression or sagging of the ST segment which is concave in an upward direction; it looks as if the ST segment alone has been pulled down. These changes are more apparent in the lateral precordial leads, although they may also be seen in the limb leads. ...
... Depression or sagging of the ST segment which is concave in an upward direction; it looks as if the ST segment alone has been pulled down. These changes are more apparent in the lateral precordial leads, although they may also be seen in the limb leads. ...
Arrhythmogenic right ventricular cardiomyopathy in a dog
... signs, until acutely decompensated congestive right heart failure led to euthanasia after 4 months. Arrhythmogenic right ventricular cardiomyopathy is a well-described clinical entity in humans, and has previously been documented in 3 male dogs. The condition is characterised by progressive fibro-ad ...
... signs, until acutely decompensated congestive right heart failure led to euthanasia after 4 months. Arrhythmogenic right ventricular cardiomyopathy is a well-described clinical entity in humans, and has previously been documented in 3 male dogs. The condition is characterised by progressive fibro-ad ...
Editorial - Circulation
... agents in response to therapeutic need, in a manner that is currently only available in intravenous injection systems such as insulin pumps. Furthermore, drug delivery might be triggered automatically by the onset of an arrhythmia that is detected by an implantable device. There are a number of limi ...
... agents in response to therapeutic need, in a manner that is currently only available in intravenous injection systems such as insulin pumps. Furthermore, drug delivery might be triggered automatically by the onset of an arrhythmia that is detected by an implantable device. There are a number of limi ...
Impact of preload changes on positive and negative left ventricular
... The present study shows that the acoustic cardiography parameter EMAT reflects the changes in LV maximum dP/dt associated with acute increases in LV volume. The positive and negative LV maximum dP/dt correlated significantly, both before and after LV angiography. This relationship may result from th ...
... The present study shows that the acoustic cardiography parameter EMAT reflects the changes in LV maximum dP/dt associated with acute increases in LV volume. The positive and negative LV maximum dP/dt correlated significantly, both before and after LV angiography. This relationship may result from th ...
Managing Dysrhythmias - American Academy of Family Physicians
... post-MI or with hypokalemia or hypomagnesemia. Rate may be reduced by using IV verapamil. Differences from wandering atrial pacemaker (WAP): significantly increased rate and almost invariable association with severe pulmonary disease. ...
... post-MI or with hypokalemia or hypomagnesemia. Rate may be reduced by using IV verapamil. Differences from wandering atrial pacemaker (WAP): significantly increased rate and almost invariable association with severe pulmonary disease. ...
Title goes here (Arial Narrow 28 pt) second line
... the original resting level. Phase 3 ccorresponds to the effective/absolute refractory period. — Restoration of ionic gradients to "pre-action potential" levels requires the action of the Na+/K+ membrane ATPase-dependent transporter ...
... the original resting level. Phase 3 ccorresponds to the effective/absolute refractory period. — Restoration of ionic gradients to "pre-action potential" levels requires the action of the Na+/K+ membrane ATPase-dependent transporter ...
Cardiac MRI: Standardized Right and Left Ventricular Quantification
... contour tracing the LV and RV. Existing RV protocols show high intra- and interobserver variability (up to 60%) for the two most basal endocardial and epicardial contours and RV wall mass is especially difficult to reproduce (R2 equalling ...
... contour tracing the LV and RV. Existing RV protocols show high intra- and interobserver variability (up to 60%) for the two most basal endocardial and epicardial contours and RV wall mass is especially difficult to reproduce (R2 equalling ...
HEART RATE AND BLOOD PRESSURE
... such as fibrillar stretching, anisotropy, and triggered activity due to late potentials, depending on activation of slow calcium channels. Heart rate variability is a powerful predictor of arrhythmia-related complications in patients surviving the acute phase of myocardial infarction. The predictive ...
... such as fibrillar stretching, anisotropy, and triggered activity due to late potentials, depending on activation of slow calcium channels. Heart rate variability is a powerful predictor of arrhythmia-related complications in patients surviving the acute phase of myocardial infarction. The predictive ...
Intrinsic Conduction System
... c. Delays the action potential while the AV Bundle atria contract. d. Links the SA node to the AV node, distributing the action potential to the contractile cells of the atria. e. Electrically connects the atria and the ventricles, connecting the AV node to the Bundle Branches. f. Conveys the action ...
... c. Delays the action potential while the AV Bundle atria contract. d. Links the SA node to the AV node, distributing the action potential to the contractile cells of the atria. e. Electrically connects the atria and the ventricles, connecting the AV node to the Bundle Branches. f. Conveys the action ...
Tachyarrhythmias, Diagnosis and Management
... Atrial tachycardia • P wave upright lead V1 and negative in aVL consistent with left atrial focus. • P wave negative in V1 and upright in aVL consistent with right atrial focus. • Adenosine may help with diagnosis if AV block occurs and continued arrhythmia likely atrial tachycardia • 70-80% will a ...
... Atrial tachycardia • P wave upright lead V1 and negative in aVL consistent with left atrial focus. • P wave negative in V1 and upright in aVL consistent with right atrial focus. • Adenosine may help with diagnosis if AV block occurs and continued arrhythmia likely atrial tachycardia • 70-80% will a ...
ECG - Wsimg.com
... ST-segment monitoring software has been developed to analyze all 12 leads and to sound an alarm for ST-segment changes. Therefore, if lead II is being displayed but the patient has a transient ischemic event involving lead V5, an ST alarm would be triggered. ...
... ST-segment monitoring software has been developed to analyze all 12 leads and to sound an alarm for ST-segment changes. Therefore, if lead II is being displayed but the patient has a transient ischemic event involving lead V5, an ST alarm would be triggered. ...
Neonatal Cardiac Arrhythmias
... Complete atrioventricular block -Regular P-P intervals -Atrial rate > ventricular rate -P which occur after T have no effect on ...
... Complete atrioventricular block -Regular P-P intervals -Atrial rate > ventricular rate -P which occur after T have no effect on ...
The Heart
... of an action potential in the S-A node. It involves repeated contraction and relaxation of heart muscle – contraction is termed systole and relaxation diastole. Atrial diastole: The atria are relaxed and blood normally flows from the great veins into the atria. As blood continues to fill the atria, ...
... of an action potential in the S-A node. It involves repeated contraction and relaxation of heart muscle – contraction is termed systole and relaxation diastole. Atrial diastole: The atria are relaxed and blood normally flows from the great veins into the atria. As blood continues to fill the atria, ...
Inter-ventricular septum: New observations on the structure and
... septa. The orientation of connective tissue structures was also observed in rat and rabbit hearts. The inter-ventricular septum is not separated into gross anatomical parts by connective tissue septa. Perimysial connective tissue septa run base-to-apex within the inter-ventricular septum following s ...
... septa. The orientation of connective tissue structures was also observed in rat and rabbit hearts. The inter-ventricular septum is not separated into gross anatomical parts by connective tissue septa. Perimysial connective tissue septa run base-to-apex within the inter-ventricular septum following s ...
Gender differences in cardiac electrophysiology and arrhythmias
... SVT – Supraventricular tachycardia, VT – Ventricular tachycardia, VF – Ventricular fibrillation, CNS – Central nervous system, AF – Atrial fibrillation, HTN – Hypertension, ...
... SVT – Supraventricular tachycardia, VT – Ventricular tachycardia, VF – Ventricular fibrillation, CNS – Central nervous system, AF – Atrial fibrillation, HTN – Hypertension, ...
SVT
... RF Ablation of Atrial Flutter • Atrial flutter involves a macro-reentry circuit within the right atrium. • Critical areas of conduction within the right atrium are necessary to sustain atrial flutter. • RF ablation of conduction within such critical sites (most commonly the inferior vena cava-tricu ...
... RF Ablation of Atrial Flutter • Atrial flutter involves a macro-reentry circuit within the right atrium. • Critical areas of conduction within the right atrium are necessary to sustain atrial flutter. • RF ablation of conduction within such critical sites (most commonly the inferior vena cava-tricu ...
Non-Compaction Cardiomyopathy. Risk Stratification of Sudden
... In 1932 it was initially reported by Bellet et al. as “LV hypertrabeculation”, associated with congenital cardiac defects (1) and afterwards in 1984 it was reported by Engberding and Bender as “isolated persistence of myocardial sinusoids”, (2) noncompaction cardiomyopathy of left ventricular was of ...
... In 1932 it was initially reported by Bellet et al. as “LV hypertrabeculation”, associated with congenital cardiac defects (1) and afterwards in 1984 it was reported by Engberding and Bender as “isolated persistence of myocardial sinusoids”, (2) noncompaction cardiomyopathy of left ventricular was of ...
Pacemaker Lead Perforation during Right Ventricular Outflow Tract
... et al., demonstrated that septal RV outflow tract stimulation did not always lead to a negative complex in lead I [9]. It was not possible to develop an algorithm that correlates ECG parameters with lead position because QRS morphology of RV outflow tract pacing sites may be due to variations in bas ...
... et al., demonstrated that septal RV outflow tract stimulation did not always lead to a negative complex in lead I [9]. It was not possible to develop an algorithm that correlates ECG parameters with lead position because QRS morphology of RV outflow tract pacing sites may be due to variations in bas ...
Clinical significance of matrix metalloproteinases activity in acute
... ABSTRACT. Matrix metalloproteinases (MMP) degrade myocardial fibrillar collagen in acute myocardial infarction (MI) patients. Their activity is tightly controlled in normal myocardium by a family of closely related tissue inhibitors known as TIMP. An imbalance in their activity might contribute to p ...
... ABSTRACT. Matrix metalloproteinases (MMP) degrade myocardial fibrillar collagen in acute myocardial infarction (MI) patients. Their activity is tightly controlled in normal myocardium by a family of closely related tissue inhibitors known as TIMP. An imbalance in their activity might contribute to p ...
Intrinsic Conduction System
... c. Delays the action potential while the AV Bundle atria contract. d. Links the SA node to the AV node, distributing the action potential to the contractile cells of the atria. e. Electrically connects the atria and the ventricles, connecting the AV node to the Bundle Branches. f. Conveys the action ...
... c. Delays the action potential while the AV Bundle atria contract. d. Links the SA node to the AV node, distributing the action potential to the contractile cells of the atria. e. Electrically connects the atria and the ventricles, connecting the AV node to the Bundle Branches. f. Conveys the action ...
Intrinsic Conduction System
... d. Links the SA node to the AV node, distributing the action potential to the contractile cells of the atria. e. Electrically connects the atria and the ventricles, connecting the AV node to the Bundle Branches. f. Conveys the action potential down the interventricular septum. 6. (Page 4.) Explain t ...
... d. Links the SA node to the AV node, distributing the action potential to the contractile cells of the atria. e. Electrically connects the atria and the ventricles, connecting the AV node to the Bundle Branches. f. Conveys the action potential down the interventricular septum. 6. (Page 4.) Explain t ...
Effect of milrinone on short-term outcome of patients with myocardial
... treated with milrinone, which agrees with the report by Levy et al. [22] which suggested that milrinone is an alternative to other inotropic drugs. In our study, pre-operative LVEF was significantly lower in the milrinone group, while there was no difference between post-operative LVEFs in the two g ...
... treated with milrinone, which agrees with the report by Levy et al. [22] which suggested that milrinone is an alternative to other inotropic drugs. In our study, pre-operative LVEF was significantly lower in the milrinone group, while there was no difference between post-operative LVEFs in the two g ...
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.