Slow and deep respiration suppresses steady
... been diverse findings about respiratory influences on steadystate sympathetic nerve activity. However, these studies included healthy or mildly hypertensive subjects with relatively lower sympathetic nerve activity at rest or during handgrip exercise or lower body negative pressure (8, 18). The magn ...
... been diverse findings about respiratory influences on steadystate sympathetic nerve activity. However, these studies included healthy or mildly hypertensive subjects with relatively lower sympathetic nerve activity at rest or during handgrip exercise or lower body negative pressure (8, 18). The magn ...
The Duckett-Jones Criteria
... Rheumatic Fever – This is an acquired disease and is thought to be an autoimmune consequence of Lancefield Streptococcus (group A) infection. Traditionally, this has been a leading cause of valvular heart disease but with the advent of antibiotics it is becoming less common. The various valvular les ...
... Rheumatic Fever – This is an acquired disease and is thought to be an autoimmune consequence of Lancefield Streptococcus (group A) infection. Traditionally, this has been a leading cause of valvular heart disease but with the advent of antibiotics it is becoming less common. The various valvular les ...
Analysis of left ventricular diastolic function using magnetic
... coronary disease. In an acute myocardial infarction there are anomalies of the myocardial metabolism, of ATP consumption and calcium transportation in the myocyte, all causing a delay in contraction.13,14 The influence of other factors that might be present in these patients such as the asynchronici ...
... coronary disease. In an acute myocardial infarction there are anomalies of the myocardial metabolism, of ATP consumption and calcium transportation in the myocyte, all causing a delay in contraction.13,14 The influence of other factors that might be present in these patients such as the asynchronici ...
Assessment of the Rapid Shallow Breathing Index
... criteria for successful liberation of a patient from mechanical ventilation and extubation may be highly dependent on the clinical situation. Different criteria were used for ventilator weaning. We designed a clinical trial to determine the usefulness of rapid shallow breathing index (RSBI) as a pre ...
... criteria for successful liberation of a patient from mechanical ventilation and extubation may be highly dependent on the clinical situation. Different criteria were used for ventilator weaning. We designed a clinical trial to determine the usefulness of rapid shallow breathing index (RSBI) as a pre ...
Ribose Supplementation Alone or with Elevated Creatine
... Background: Reduced levels of creatine and total adenine nucleotides (sum of ATP, ADP and AMP) are hallmarks of chronic heart failure and restoring these pools is predicted to be beneficial by maintaining the diseased heart in a more favourable energy state. Ribose supplementation is thought to supp ...
... Background: Reduced levels of creatine and total adenine nucleotides (sum of ATP, ADP and AMP) are hallmarks of chronic heart failure and restoring these pools is predicted to be beneficial by maintaining the diseased heart in a more favourable energy state. Ribose supplementation is thought to supp ...
Correlation between P Wave Dispersion, QRS Duration and QT
... in Hospital Events in Cases of Acute Coronary Syndrome Mohmoud Ferky Hassan Hassebo2*, Muhammad Nasr eldin El Sayed1, Mohamed Mostafa Abd El Salam Megahed1 and Tarek Hussein El ...
... in Hospital Events in Cases of Acute Coronary Syndrome Mohmoud Ferky Hassan Hassebo2*, Muhammad Nasr eldin El Sayed1, Mohamed Mostafa Abd El Salam Megahed1 and Tarek Hussein El ...
Medicare and Atrial Fibrillation
... AFib costs Medicare more than $15.7 billion annually due to costly complications In a study published in 2006, researchers estimate the total direct annual medical cost for treatment of AFib patients over and under age 65 is $6.65 billion, with hospitalizations accounting for the largest share.8 How ...
... AFib costs Medicare more than $15.7 billion annually due to costly complications In a study published in 2006, researchers estimate the total direct annual medical cost for treatment of AFib patients over and under age 65 is $6.65 billion, with hospitalizations accounting for the largest share.8 How ...
perioperativeCardiacTamponade
... Delayed presentation 45-60% of all cases Usually 2 to 36 hours ...
... Delayed presentation 45-60% of all cases Usually 2 to 36 hours ...
Progress toward controlling in vivo fibrillating sheep
... complex systems, some research has focused on cardiac arrhythmias that are well-characterized by a low-dimension mathematical description and hence should be amenable to control. Taking this approach, Hall et al.10 demonstrated that an adaptive controller can suppress atrio-ventricular nodal conduct ...
... complex systems, some research has focused on cardiac arrhythmias that are well-characterized by a low-dimension mathematical description and hence should be amenable to control. Taking this approach, Hall et al.10 demonstrated that an adaptive controller can suppress atrio-ventricular nodal conduct ...
The current Status of Atenolol in Ischemic Heart disease
... Beta blockers are recommended in all patients following myocardial infarction for secondary prevention since they reduce mortality,14-16 yet continue to be underused in this setting. There has been some debate over whether or not this benefit is a class effect of beta blockers. Rinfret et al17 stud ...
... Beta blockers are recommended in all patients following myocardial infarction for secondary prevention since they reduce mortality,14-16 yet continue to be underused in this setting. There has been some debate over whether or not this benefit is a class effect of beta blockers. Rinfret et al17 stud ...
Echocardiographic Features of Atrial Septal Defect
... Echocardiographic studies were performed on 39 adult patients with atrial septal defects. Findings were compared with those from normal subjects, patients with other congenital left-to-right shunts (ventricular septal defect and patent ductus arteriosus), patients with uncomplicated right ventricula ...
... Echocardiographic studies were performed on 39 adult patients with atrial septal defects. Findings were compared with those from normal subjects, patients with other congenital left-to-right shunts (ventricular septal defect and patent ductus arteriosus), patients with uncomplicated right ventricula ...
Clozapine Toxicity handout
... the requirements specified in the package insert, provide an efficient means of determining developing agranulocytosis. Analysis of post-marketing safety databases suggests that Clozaril is associated with an increased risk of fatal myocarditis, especially during, but not limited to, the first month ...
... the requirements specified in the package insert, provide an efficient means of determining developing agranulocytosis. Analysis of post-marketing safety databases suggests that Clozaril is associated with an increased risk of fatal myocarditis, especially during, but not limited to, the first month ...
Distribution of normal human left ventricular myofiber stress at end
... Laboratory of Cardiac Energetics, Bethesda, MD) (44, 45). Throughplane motion was accounted for by including both the short-axis and long-axis tag lines in the analysis. FE modeling. We used the FE method to calculate the mechanical response of the LV of each subject due to volume and pressure chang ...
... Laboratory of Cardiac Energetics, Bethesda, MD) (44, 45). Throughplane motion was accounted for by including both the short-axis and long-axis tag lines in the analysis. FE modeling. We used the FE method to calculate the mechanical response of the LV of each subject due to volume and pressure chang ...
PAthoPhySIology of hEARt fAIluRE - The Association of Physicians
... decrease of venous pressures (preload) with diuretics to relieve the symptoms and improve the exercise capacity. How much diuretic to give? The therapeutic goal is to give diuretics to improve the exercise capacity to maximal. If compensatory mechanisms fail to raise venous pressures adequately, suc ...
... decrease of venous pressures (preload) with diuretics to relieve the symptoms and improve the exercise capacity. How much diuretic to give? The therapeutic goal is to give diuretics to improve the exercise capacity to maximal. If compensatory mechanisms fail to raise venous pressures adequately, suc ...
Review on Flecainide poisoning - Hong Kong College of Emergency
... Flecainide acetate is a Vaughn-Williams class IC antiarrhythmic. It is used mainly for treatment of supraventricular arrhythmias due to reentry and is highly effective in suppressing frequent premature ventricular depolarization and nonsustained ventricular tachycardia (VT). Although less than 1% of ...
... Flecainide acetate is a Vaughn-Williams class IC antiarrhythmic. It is used mainly for treatment of supraventricular arrhythmias due to reentry and is highly effective in suppressing frequent premature ventricular depolarization and nonsustained ventricular tachycardia (VT). Although less than 1% of ...
Long-Term Outcome of Outlet-Type Ventricular Septal Defect: Focus
... media. 23,24 The Venturi effect is defined as a highvelocity jet flow of blood created by the VSD below the aortic valve. This effect has been considered as the most probable cause of AVP25,26 because such a high-velocity jet flow is potentially capable of progressive elongation of the adjacent aort ...
... media. 23,24 The Venturi effect is defined as a highvelocity jet flow of blood created by the VSD below the aortic valve. This effect has been considered as the most probable cause of AVP25,26 because such a high-velocity jet flow is potentially capable of progressive elongation of the adjacent aort ...
Heart/Lung Transplant
... lung allocation systems in the United States. In 2005, United Network for Organ Sharing (UNOS) changed the method by which lungs were allocated, from one based on length of time on the waiting list, to a system that incorporates the severity of the patient’s underlying disease, as well as likelihood ...
... lung allocation systems in the United States. In 2005, United Network for Organ Sharing (UNOS) changed the method by which lungs were allocated, from one based on length of time on the waiting list, to a system that incorporates the severity of the patient’s underlying disease, as well as likelihood ...
pericardial_effusion
... treatment for a particular condition may evolve as medical advances are made; therefore, the medications should not be considered as all inclusive. Drugs should not be used in place of tapping and draining the space between the heart and the sac surrounding the heart (pericardiocentesis) Medicat ...
... treatment for a particular condition may evolve as medical advances are made; therefore, the medications should not be considered as all inclusive. Drugs should not be used in place of tapping and draining the space between the heart and the sac surrounding the heart (pericardiocentesis) Medicat ...
Cardiology - Stiftung KinderHerz
... All TOF patients had normal LV myocardial velocities in this study while 48 patients (24 patients <18 and 24 >18 years old) had reversed myocardial velocities in diastole in the RV free wall [12]. The use of TDI velocities in a functionally univentricular heart has also been studied. Frommelt et al. ...
... All TOF patients had normal LV myocardial velocities in this study while 48 patients (24 patients <18 and 24 >18 years old) had reversed myocardial velocities in diastole in the RV free wall [12]. The use of TDI velocities in a functionally univentricular heart has also been studied. Frommelt et al. ...
Clinical Differentiation Between Physiological Remodeling and
... BACKGROUND Physiological cardiac adaptation to regular exercise, including biventricular dilation and T-wave inversion (TWI), may create diagnostic overlap with arrhythmogenic right ventricular cardiomyopathy (ARVC). OBJECTIVES The goal of this study was to assess the accuracy of diagnostic criteria ...
... BACKGROUND Physiological cardiac adaptation to regular exercise, including biventricular dilation and T-wave inversion (TWI), may create diagnostic overlap with arrhythmogenic right ventricular cardiomyopathy (ARVC). OBJECTIVES The goal of this study was to assess the accuracy of diagnostic criteria ...
ECG Analysis (Fundamentals) - American Academy of Family
... The material presented here is being made available by the American Academy of Family Physicians for educational purposes only. This material is not intended to represent the only, nor necessarily best, methods or procedures appropriate for the medical situations discussed. Rather, it is intended to ...
... The material presented here is being made available by the American Academy of Family Physicians for educational purposes only. This material is not intended to represent the only, nor necessarily best, methods or procedures appropriate for the medical situations discussed. Rather, it is intended to ...
Ventricular Arrhythmias in Adult Aortic Stenosis
... hypertensive subjects with and only in 17% of those without LVH, indicating that the increase in myo¬ cardial mass may represent an anatomic substrate for ventricular arrhythmias. In 40 hypertensive patients with documented LVH and history of syncope and aborted sudden death, Vester and coauthors23 ...
... hypertensive subjects with and only in 17% of those without LVH, indicating that the increase in myo¬ cardial mass may represent an anatomic substrate for ventricular arrhythmias. In 40 hypertensive patients with documented LVH and history of syncope and aborted sudden death, Vester and coauthors23 ...
2011 ACCF/AHA/HRS Focused Update on the Management of Patients With... Fibrillation (Updating the 2006 Guideline): A Report of the American...
... and treatment is based on clinical experience. When recommendations at Level C are supported by historical clinical data, appropriate references (including clinical reviews) are cited if available. For issues where sparse data are available, a survey of current practice among the clinicians on the w ...
... and treatment is based on clinical experience. When recommendations at Level C are supported by historical clinical data, appropriate references (including clinical reviews) are cited if available. For issues where sparse data are available, a survey of current practice among the clinicians on the w ...
Anatomical Obstacles to Catheter Ablation for Atrioventricular Nodal
... block with concurrent hypotension occurred. The ...
... block with concurrent hypotension occurred. The ...
Cardiac contractility modulation
.jpg?width=300)
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.