The Johns Hopkins Arrhythmia Service
... PSVT may occur at any age and commonly occurs in patients who have no other types of heart disease. Patients with PSVT typically describe a rapid, or racing, regular heartbeat (between 130 and 230 beats per minute) that starts and stops abruptly. It is commonly misdiagnosed as a panic attack. With t ...
... PSVT may occur at any age and commonly occurs in patients who have no other types of heart disease. Patients with PSVT typically describe a rapid, or racing, regular heartbeat (between 130 and 230 beats per minute) that starts and stops abruptly. It is commonly misdiagnosed as a panic attack. With t ...
Atrial Fibrillation in Acute Myocardial Infarction
... to be an important mechanism of AF in anterior myocardial infarction, which in turn resulted in acute left atrial hypertension and distention.18,26 The increased atrial size would permit the coexistence many re-entrant circuits and is an important factor for the occurrence and perpetuation of AF.23 ...
... to be an important mechanism of AF in anterior myocardial infarction, which in turn resulted in acute left atrial hypertension and distention.18,26 The increased atrial size would permit the coexistence many re-entrant circuits and is an important factor for the occurrence and perpetuation of AF.23 ...
Functional Morphology of the Heart in Fishes D. J. Randall
... another in the diagram on the right to illustrate the pericardium was opened. The perithe relationships of the pressure changes in the various chambers. (Stevens and Bennion, unpubcardium in teleosts is not rigid, and similar lished data). mechanisms do not seem to be operating to increase venous re ...
... another in the diagram on the right to illustrate the pericardium was opened. The perithe relationships of the pressure changes in the various chambers. (Stevens and Bennion, unpubcardium in teleosts is not rigid, and similar lished data). mechanisms do not seem to be operating to increase venous re ...
Aetiology of sudden cardiac death in sport: a histopathologist`s
... Coronary mechanisms of sudden death Coronary artery disease Most sudden deaths in athletes over the age of 35 are due to coronary artery atheroma with significant blockage (>75% narrowing of main vessel, usually the left anterior descending coronary artery) of the coronary arteries.10 11 There may be ...
... Coronary mechanisms of sudden death Coronary artery disease Most sudden deaths in athletes over the age of 35 are due to coronary artery atheroma with significant blockage (>75% narrowing of main vessel, usually the left anterior descending coronary artery) of the coronary arteries.10 11 There may be ...
Quetiapine and cardiac muscle disorders
... Several detailed case reports have described cardiac muscle disorders (cardiomyopathy and myocarditis) in patients treated with quetiapine, some of which have been fatal. The symptoms included shortness of breath and oedema. The disorders sometimes resolved on withdrawal of quetiapine. ...
... Several detailed case reports have described cardiac muscle disorders (cardiomyopathy and myocarditis) in patients treated with quetiapine, some of which have been fatal. The symptoms included shortness of breath and oedema. The disorders sometimes resolved on withdrawal of quetiapine. ...
Expert consensus for multimodality imaging evaluation of adult
... the cellular level may be deemed irreversible, although cardiac function may be preserved and compensation optimized through antiremodelling pharmacologic therapy, and/or less frequently, mechanical intervention. Agents that are associated with Type I CTRCD include all of the anthracyclines (doxorub ...
... the cellular level may be deemed irreversible, although cardiac function may be preserved and compensation optimized through antiremodelling pharmacologic therapy, and/or less frequently, mechanical intervention. Agents that are associated with Type I CTRCD include all of the anthracyclines (doxorub ...
![ecg interpretation [f04]](http://s1.studyres.com/store/data/015428718_1-151c6e835a5472da38d4fac4af38aa4e-300x300.png)
ecg interpretation [f04]
... Reduces the door to perfusion time in those candidates eligible for immediate reperfusion therapy. ECG changes may disappear after treatment of ischemia in the field and before arrival at the ED. This is not a problem if the 12 lead was performed with the first set of vital signs. If the patient has ...
... Reduces the door to perfusion time in those candidates eligible for immediate reperfusion therapy. ECG changes may disappear after treatment of ischemia in the field and before arrival at the ED. This is not a problem if the 12 lead was performed with the first set of vital signs. If the patient has ...
Current Technique of the Arterial Switch Procedure
... Atrial and ventricular septal defects are repaired first. Without exception, all ventricular septal defects have been patched through the tricuspid valve. The atrial septal defects have also been closed with a patch in the majority of patients, particularly when the septum has been extensively torn ...
... Atrial and ventricular septal defects are repaired first. Without exception, all ventricular septal defects have been patched through the tricuspid valve. The atrial septal defects have also been closed with a patch in the majority of patients, particularly when the septum has been extensively torn ...
2005 and 2010 Guidelines for First Aid - CPR
... endotracheal tube. Because blood must circulate through the lungs for CO2 to be exhaled and measured, capnography can also serve as a physiologic monitor of the effectiveness of chest compressions and to detect return of spontaneous circulation. Ineffective chest compressions (due to either patient ...
... endotracheal tube. Because blood must circulate through the lungs for CO2 to be exhaled and measured, capnography can also serve as a physiologic monitor of the effectiveness of chest compressions and to detect return of spontaneous circulation. Ineffective chest compressions (due to either patient ...
The use of Tricuspid Annular Plane Systolic Excursion and Tissue
... geometry of the chamber in association with lack of optimal visualization may limit the accuracy of conventional variables, which have bee proven to be reliable in other clinical settings. For the above reasons, novel indices have been adopted for easier, highly reproducible and less variable evalua ...
... geometry of the chamber in association with lack of optimal visualization may limit the accuracy of conventional variables, which have bee proven to be reliable in other clinical settings. For the above reasons, novel indices have been adopted for easier, highly reproducible and less variable evalua ...
Acute Myocardial Infarction - J
... inhibition, and a substrate for replenishment of ATP, and is an important mediator of preconditioning.60 In the Acute Myocardial Infarction Study of Adenosine (AMISTAD)-II, 2,118 patients with STEMI undergoing reperfusion therapy within 6 h of the onset of symptoms were randomized to a 3-h infusion ...
... inhibition, and a substrate for replenishment of ATP, and is an important mediator of preconditioning.60 In the Acute Myocardial Infarction Study of Adenosine (AMISTAD)-II, 2,118 patients with STEMI undergoing reperfusion therapy within 6 h of the onset of symptoms were randomized to a 3-h infusion ...
CHA2DS2-VASc Score and Heart Rate Predict Ischemic Stroke
... INR in our study suggests that these patients should be considered to receive these new agents. However, it is not clear whether the new anticoagulation therapies would change the outcome prediction of stroke patients with AF, and additional studies are required. There are some limitations to our st ...
... INR in our study suggests that these patients should be considered to receive these new agents. However, it is not clear whether the new anticoagulation therapies would change the outcome prediction of stroke patients with AF, and additional studies are required. There are some limitations to our st ...
Full Text - Verlag der Zeitschrift für Naturforschung
... Three lactam compounds were isolated from the fruiting body of Tricholoma matsutake (S. Ito & Imai) Sing., an edible mushroom, and their structures were identified as cycloS-proline-R-leucine (1), hexahydro-2H-azepin-2-one (2), and butyl 5-oxo-2-pyrrolidine carboxylate (3) by chemical, physicochemic ...
... Three lactam compounds were isolated from the fruiting body of Tricholoma matsutake (S. Ito & Imai) Sing., an edible mushroom, and their structures were identified as cycloS-proline-R-leucine (1), hexahydro-2H-azepin-2-one (2), and butyl 5-oxo-2-pyrrolidine carboxylate (3) by chemical, physicochemic ...
Cardiac Emergency
... When? for treatment of pulmonary congestion associated with left ventricular dysfunction How? may give 20 to 40 mg IV push over 1 to 2 minutes, up to 2mg/kg total dosage Precautions! dehydration, deplete calcium, potassium, magnesium, sodium. Isoproterenol Why? Synthetic sympathomimetic amine with p ...
... When? for treatment of pulmonary congestion associated with left ventricular dysfunction How? may give 20 to 40 mg IV push over 1 to 2 minutes, up to 2mg/kg total dosage Precautions! dehydration, deplete calcium, potassium, magnesium, sodium. Isoproterenol Why? Synthetic sympathomimetic amine with p ...
WHY CARDIAC PATIENTS DISCONTINUED LIPID LOWERING AGENTS: VIEWS ON
... primary dyslipidemia (51.5%), with small proportions of smokers (12%) and alcohol consumers (9%). The mean age of these patients was 60 ± 10 years and geriatric occupied 30% of them. The most common type and dose was lovastatin (81%) and 20 mg doses (57.8%) with mean duration of therapy 3.5±3.0 and ...
... primary dyslipidemia (51.5%), with small proportions of smokers (12%) and alcohol consumers (9%). The mean age of these patients was 60 ± 10 years and geriatric occupied 30% of them. The most common type and dose was lovastatin (81%) and 20 mg doses (57.8%) with mean duration of therapy 3.5±3.0 and ...
2011-03-10, Safety of magnetic resonance imaging in patients with
... excite peripheral nerves. Although current-generation scanners operate at levels that will not directly excite cardiomyocytes, the gradients can induce currents within electrically conductive wires and leads that could cause arrhythmias. In addition to the above considerations, several other issues ...
... excite peripheral nerves. Although current-generation scanners operate at levels that will not directly excite cardiomyocytes, the gradients can induce currents within electrically conductive wires and leads that could cause arrhythmias. In addition to the above considerations, several other issues ...
Reproducibility of onset and recovery oxygen uptake kinetics in
... In order to use O2 kinetics for these clinical purposes it is necessary to know more about the applicability and reproducibility of these exercise parameters in this specific patient group. Until now there has been no uniformity in the assessment of O2 kinetics in patients with CHF (Arena et al. 200 ...
... In order to use O2 kinetics for these clinical purposes it is necessary to know more about the applicability and reproducibility of these exercise parameters in this specific patient group. Until now there has been no uniformity in the assessment of O2 kinetics in patients with CHF (Arena et al. 200 ...
Clinical Meaning of Ascites in Patients with Endomyocardial Fibrosis
... proteins and leptocytosis in ascites effusion defend this hypothesis 12. Patients with ascites more often had signs related to the involvement of the right chambers, such as hepatomegaly and peripheral edema, usually present in cases of congestive heart failure. Patients with ascites were younger, w ...
... proteins and leptocytosis in ascites effusion defend this hypothesis 12. Patients with ascites more often had signs related to the involvement of the right chambers, such as hepatomegaly and peripheral edema, usually present in cases of congestive heart failure. Patients with ascites were younger, w ...
Ernest Henry Starling, His Predecessors, and the - SVT ac
... aortic pressure and heart rate, the [work of the heart] is capable of being varied within wide limits by variations in the venous pressure,” and concluded that “we must look to the quantity of blood arriving at the heart as the predominating factor in regulating the work done.” Roy implied that the ...
... aortic pressure and heart rate, the [work of the heart] is capable of being varied within wide limits by variations in the venous pressure,” and concluded that “we must look to the quantity of blood arriving at the heart as the predominating factor in regulating the work done.” Roy implied that the ...
Late Ventricular Diastole
... semilunar valves close When ventricular pressure is less than atrial pressure, the atrioventricular valves open ; the ventricles begin to fill Isovolumetric Period of Relaxation ...
... semilunar valves close When ventricular pressure is less than atrial pressure, the atrioventricular valves open ; the ventricles begin to fill Isovolumetric Period of Relaxation ...
Perioperative Results and Complications in€15,964 Transcatheter
... Values are %, mean SD, or median (interquartile range). *p < 0.05 versus total. AV ¼ aortic valve; CAD ¼ coronary artery disease; COPD ¼ chronic obstructive pulmonary disease; EF ¼ ejection fraction; NYHA ¼ New York Heart Association; Pmean ¼ mean aortic pressure gradient; PVD ¼ peripheral vascula ...
... Values are %, mean SD, or median (interquartile range). *p < 0.05 versus total. AV ¼ aortic valve; CAD ¼ coronary artery disease; COPD ¼ chronic obstructive pulmonary disease; EF ¼ ejection fraction; NYHA ¼ New York Heart Association; Pmean ¼ mean aortic pressure gradient; PVD ¼ peripheral vascula ...
Myocardial Protection in Neonates and Infants
... use of “elective cardiac arrest” was by Melrose in 1955, who also coined the term “cardioplegia” for the technique [5]. Gott et al. used retrograde perfusion of the heart via the coronary sinus using warm blood with Melrose solution [6]. Lillehei’s group also used retrograde perfusion of the coronar ...
... use of “elective cardiac arrest” was by Melrose in 1955, who also coined the term “cardioplegia” for the technique [5]. Gott et al. used retrograde perfusion of the heart via the coronary sinus using warm blood with Melrose solution [6]. Lillehei’s group also used retrograde perfusion of the coronar ...
Cardiomyopathy, Myocarditis and Pericardial Disease
... IV lasix and digoxin-improve symptoms Ace inhibitors and B-Blockers-improve survival Amiodarone- for complex venticular ectopy Anticoagulation can be considered ...
... IV lasix and digoxin-improve symptoms Ace inhibitors and B-Blockers-improve survival Amiodarone- for complex venticular ectopy Anticoagulation can be considered ...
Cardiac contractility modulation
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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.