K channel blockers
... Red = drug effect on action potential. Blue = normal action potential. (Purkinje fiber) ...
... Red = drug effect on action potential. Blue = normal action potential. (Purkinje fiber) ...
The Management of Patients with Premature Ventricular Contractions
... arrhythmias, without reducing mortality The patients in these studies were always a good-risk population with a low mortality in the control groups. In addition, when arrhythmias were recog nized in the control groups, they were treated. More recently, Lie and co-workers 1 0 in a double-blind random ...
... arrhythmias, without reducing mortality The patients in these studies were always a good-risk population with a low mortality in the control groups. In addition, when arrhythmias were recog nized in the control groups, they were treated. More recently, Lie and co-workers 1 0 in a double-blind random ...
Atrial Fibrillation
... digoxin, and to some degree amiodarone are effective. In general, beta blockers are more effective during exercise compared to at rest. Digoxin is more effective at rest compared to exercise. Ca channel blockers maybe effective in both situations Co-existing conditions often dictate use- i.e. pts wi ...
... digoxin, and to some degree amiodarone are effective. In general, beta blockers are more effective during exercise compared to at rest. Digoxin is more effective at rest compared to exercise. Ca channel blockers maybe effective in both situations Co-existing conditions often dictate use- i.e. pts wi ...
Age-related normal structural and functional ventricular values in
... Abstract: BACKGROUND: The heart is subject to structural and functional changes with advancing age. However, the magnitude of cardiac age-dependent transformation has not been conclusively elucidated. METHODS: This retrospective cardiac magnetic resonance (CMR) study included 183 subjects with norma ...
... Abstract: BACKGROUND: The heart is subject to structural and functional changes with advancing age. However, the magnitude of cardiac age-dependent transformation has not been conclusively elucidated. METHODS: This retrospective cardiac magnetic resonance (CMR) study included 183 subjects with norma ...
CoffinLowry syndrome and left ventricular noncompaction
... Young, 2002]. To date, RPS6KA3 is the only gene associated with CLS; a mutation can be identified in 90–95% of cases [Hunter and Abidi, 2009; Pereira et al., 2010]. Because CLS is an X-linked disorder, its expression differs between the sexes: the syndrome is more severe in males, who share similar c ...
... Young, 2002]. To date, RPS6KA3 is the only gene associated with CLS; a mutation can be identified in 90–95% of cases [Hunter and Abidi, 2009; Pereira et al., 2010]. Because CLS is an X-linked disorder, its expression differs between the sexes: the syndrome is more severe in males, who share similar c ...
to the entire presentation in format - Amiodarone-IV
... • Considered within “standard of care”: reasonably prudent physicians can use. • Considered optional or alternative interventions by majority of experts (versus an intervention of choice for IIa recommendation) Circulation 2000 (Aug 22), 102:I-147 ...
... • Considered within “standard of care”: reasonably prudent physicians can use. • Considered optional or alternative interventions by majority of experts (versus an intervention of choice for IIa recommendation) Circulation 2000 (Aug 22), 102:I-147 ...
PAJ-6370-Clinical-Brief
... It is widely accepted that regular aerobic exercise reduces cardiovascular risk (Li et al., 2010). Many health care providers harp on the importance of exercise and diet, but many patients hear this without listening. While exercise seems to be avoided at all costs by much of the population, other p ...
... It is widely accepted that regular aerobic exercise reduces cardiovascular risk (Li et al., 2010). Many health care providers harp on the importance of exercise and diet, but many patients hear this without listening. While exercise seems to be avoided at all costs by much of the population, other p ...
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 ...
What is atrial fibrillation? Why has my cat got atrial fibrillation? How
... heart is divided into a left and right side and there are 2 chambers on each side (one atrium and one ventricle, linked together through a valve). In the normal heart the upper chambers (the atria) contract first squeezing the blood out of the atria and into the main pumping chambers, the ventricles ...
... heart is divided into a left and right side and there are 2 chambers on each side (one atrium and one ventricle, linked together through a valve). In the normal heart the upper chambers (the atria) contract first squeezing the blood out of the atria and into the main pumping chambers, the ventricles ...
Ventricular Dysrhythmias Learning Outcomes 9.1 Describe the various
... If patient is unresponsive, issue Code Blue, begin CPR, use emergency equipment Save ECG strips and put in medical record If patient is responsive, licensed practitioner may initiate treatment plan of medications and electrical treatments ...
... If patient is unresponsive, issue Code Blue, begin CPR, use emergency equipment Save ECG strips and put in medical record If patient is responsive, licensed practitioner may initiate treatment plan of medications and electrical treatments ...
The Conducting System - Cardiac and Stroke Networks in
... Bundle Branches divide further - small, dense network conducting tissue Endocardial → Epicardial Entire musculature depolarizes quickly IDR - 20 bpm Nervous stimulation - minor effect only No dedicated blood supply ...
... Bundle Branches divide further - small, dense network conducting tissue Endocardial → Epicardial Entire musculature depolarizes quickly IDR - 20 bpm Nervous stimulation - minor effect only No dedicated blood supply ...
The Cardiac Cycle
... • Blood flows passively into the atria, through open AV valves, and into the ventricles, where the pressure is lower. Page 6. Ventricular Filling: Atrial Contraction • Atria contract, forcing the remaining blood into the ventricles. • Blood flows through both sides of the heart at the same time. Pag ...
... • Blood flows passively into the atria, through open AV valves, and into the ventricles, where the pressure is lower. Page 6. Ventricular Filling: Atrial Contraction • Atria contract, forcing the remaining blood into the ventricles. • Blood flows through both sides of the heart at the same time. Pag ...
Study of left ventricular diastolic dysfunction in ischemic heart
... Till the recent past, all the importance was being given to the systolic function of the heart even in the genesis of congestive heart failure, the role of systolic ventricular has been well recognized and stressed upon, time and again in the current literature. But it is in this last ten years that ...
... Till the recent past, all the importance was being given to the systolic function of the heart even in the genesis of congestive heart failure, the role of systolic ventricular has been well recognized and stressed upon, time and again in the current literature. But it is in this last ten years that ...
05_Instrumental methods of examination of cardiovascular system
... not vary more than 1-2 beats per minute.Exercise, change of position, breath-holding, carotid sinus massage, or induced gagging or vomiting either has no effect or promptly abolishes the attack. Patient sare asymptomatic except for awareness of rapid heart action unless there is underlying heart dis ...
... not vary more than 1-2 beats per minute.Exercise, change of position, breath-holding, carotid sinus massage, or induced gagging or vomiting either has no effect or promptly abolishes the attack. Patient sare asymptomatic except for awareness of rapid heart action unless there is underlying heart dis ...
Echocardiographic assessment of systemic cardiac
... conduct the contrasting process. It was formed by supposedly healthy children of age and weight similar to the patients with PAIVS. They had been sent to the hospital’s outpatient echocardiography laboratory for assessment, due to clinical symptoms of innocent murmurs. In order to ensure an adequate ...
... conduct the contrasting process. It was formed by supposedly healthy children of age and weight similar to the patients with PAIVS. They had been sent to the hospital’s outpatient echocardiography laboratory for assessment, due to clinical symptoms of innocent murmurs. In order to ensure an adequate ...
Rhythm Control in Atrial Fibrillation — One Setback
... is poor ventricular function, neurohormonal activation, or inflammation, with no independent effect of atrial fibrillation on outcome. Finally, the results of the AF-CHF study are concordant with those from other studies that also did not show superiority of a rhythm-control strategy dependent on th ...
... is poor ventricular function, neurohormonal activation, or inflammation, with no independent effect of atrial fibrillation on outcome. Finally, the results of the AF-CHF study are concordant with those from other studies that also did not show superiority of a rhythm-control strategy dependent on th ...
The Cardiac Cycle - Dr. Salah A. Martin
... • Blood flows passively into the atria, through open AV valves, and into the ventricles, where the pressure is lower. Page 6. Ventricular Filling: Atrial Contraction • Atria contract, forcing the remaining blood into the ventricles. •6Blood flows through both sides of the heart at the same time. Pag ...
... • Blood flows passively into the atria, through open AV valves, and into the ventricles, where the pressure is lower. Page 6. Ventricular Filling: Atrial Contraction • Atria contract, forcing the remaining blood into the ventricles. •6Blood flows through both sides of the heart at the same time. Pag ...
Non-invasive Visualization of the Complete Cardiac Conduction
... contractions [1]. Thus, detailed insight into the anatomy of the conduction system is essential to understand the coordinated contractile behavior arising from atrial depolarization. Furthermore, this information will be useful in investigations of cardiac function and morphology in both normal and ...
... contractions [1]. Thus, detailed insight into the anatomy of the conduction system is essential to understand the coordinated contractile behavior arising from atrial depolarization. Furthermore, this information will be useful in investigations of cardiac function and morphology in both normal and ...
Measure #198 (NQF 0079): Heart Failure: Left Ventricular Ejection
... Evaluation of LVEF in patients with heart failure provides important information that is required to appropriately direct treatment. Several pharmacologic therapies have demonstrated efficacy in slowing disease progression and improving outcomes in patients with left ventricular systolic dysfunction ...
... Evaluation of LVEF in patients with heart failure provides important information that is required to appropriately direct treatment. Several pharmacologic therapies have demonstrated efficacy in slowing disease progression and improving outcomes in patients with left ventricular systolic dysfunction ...
Silent and Malignant Early Repolarization Syndrome Mimicking
... into three categories which are characterized by the location of the early repolarization pattern. Type 1 mainly manifests in the lateral precordial leads, often occurs in healthy athletes, and is associated with a lowest risk of arrhythmia. Type 2 simultaneously manifests in the inferior and inferi ...
... into three categories which are characterized by the location of the early repolarization pattern. Type 1 mainly manifests in the lateral precordial leads, often occurs in healthy athletes, and is associated with a lowest risk of arrhythmia. Type 2 simultaneously manifests in the inferior and inferi ...
Progress in Developing a Noninvasive Load-Independent
... al. (4) were performed in normal dog hearts. Underestimation of true myocardial stroke work may occur in patients with severely dilated cardiomyopathies, where the denominator term is EDV2 or EDV3/2. Third, a noninvasive surrogate of central arterial pressure is highly preferable to an invasive meas ...
... al. (4) were performed in normal dog hearts. Underestimation of true myocardial stroke work may occur in patients with severely dilated cardiomyopathies, where the denominator term is EDV2 or EDV3/2. Third, a noninvasive surrogate of central arterial pressure is highly preferable to an invasive meas ...
Out-of-Hospital Cardiac Arrest
... in highly trafficked areas such as malls and airports, and rapid emergency medical services activation and time to initiation of resuscitation efforts.9 Despite these advances in out-of-hospital cardiopulmonary resuscitation, survival to hospital discharge after cardiac arrest in most major metropol ...
... in highly trafficked areas such as malls and airports, and rapid emergency medical services activation and time to initiation of resuscitation efforts.9 Despite these advances in out-of-hospital cardiopulmonary resuscitation, survival to hospital discharge after cardiac arrest in most major metropol ...
ventricular tachycardia: recognition and Management for the internist
... arrhythmia rather than its actual nature. Thus the first step is the assessment of the vital signs, to differentiate between tachycardia with or without hemodynamic instability. The arrhythmia may be the primary cause of hemodynamic instability, or a concomitant symptom of another serious condition. ...
... arrhythmia rather than its actual nature. Thus the first step is the assessment of the vital signs, to differentiate between tachycardia with or without hemodynamic instability. The arrhythmia may be the primary cause of hemodynamic instability, or a concomitant symptom of another serious condition. ...
The Effects of External Electric Currents on the Heart
... effective circulation was maintained contiluously without ill effect for many hours by the external electric pacemaker. In the presence of myo(ardial depression from drugs, shock, anoxia, or myocardial ischemia, an effectiv e myocardial contraction may not always followv every electrocardiographi( v ...
... effective circulation was maintained contiluously without ill effect for many hours by the external electric pacemaker. In the presence of myo(ardial depression from drugs, shock, anoxia, or myocardial ischemia, an effectiv e myocardial contraction may not always followv every electrocardiographi( v ...
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.