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Takotsubo Cardiomyopathy
Takotsubo Cardiomyopathy

... Basal myocardium has a somewhat higher norepinephrine content and greater density of sympathetic nerves than the apical myocardium Left ventricular apex contains a higher concentration of adrenoceptors.  myocardial responsiveness to adrenergic stimulation is pronounced in the apex High circulating ...


... After pericardiocentesis, this variation disappears, and Vp is constant at 60 cm/s. The increased flow propagation prior to pericardiocentesis is likely due to the accelerated LV relaxation that has been demonstrated in cardiac tamponade (2). Assuming that Garcia’s data are correct, we have to consi ...
Successful use of a percutaneous miniaturized extracorporeal life
Successful use of a percutaneous miniaturized extracorporeal life

... associated with adverse effects, including activation of the systemic inflammatory response syndrome (SIRS), which can result in bleeding, arrhythmias, thromboembolism, neurological disorders, and organ dysfunction4. LVAD implantation without CPB has been advocated for small axial pumps, as well as ...
Peripartum Cardiomyopathy
Peripartum Cardiomyopathy

... A 37 year-old lady presents at 36 weeks gestation in her fourth pregnancy with a 6-day history of worsening shortness of breath, paroxysmal nocturnal dyspnoea, orthopnoea and peripheral oedema. Her three previous pregnancies were uneventful and she delivered vaginally each time. Her past medical his ...
doc - Computer Science
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... Ventricular arrhythmias in the LQT syndromes are often associated with emotional stress, exercise, or a lowered heart rate, and these features suggest initiation by afterdepolarisations [1,3]. Many LQT arrhythmias show the characteristic waxing and waning the in the ECG that is classified as torsade ...
Sudden death: managing the patient who survives
Sudden death: managing the patient who survives

... Figure 3 Main steps for evaluation and treatment. Note that although all the tests in the initial evaluation should be performed for all patients, tests in the second step should be individually oriented, performing only the necessary tests required for each patient to establish final diagnosis and ...
Cardiac Conditions - Kentucky Academy of Family Physicians
Cardiac Conditions - Kentucky Academy of Family Physicians

... ▫ LQTS Type 3 who are asymptomatic may do more ...
Cardiology-Feline Cardio - Acapulco-Vet
Cardiology-Feline Cardio - Acapulco-Vet

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Accelerated idioventricular rhythm associated
Accelerated idioventricular rhythm associated

... or deceleration of ectopic rhythm [3]. The importance of AIVR lies in its potential confusion with other, potentially serious, rhythm disorders that have, as AIVR almost invariably does, a left bundle branch block pattern by ECG: ventricular tachycardia, SVT such as those with aberration or involvin ...
Slide 1
Slide 1

... individuals will be at risk of inheriting the gene and developing the disease.  The offspring of unaffected family members carry no risk of inheriting the gene and developing the disease.  In any one family with FHCM, all affected members have the same mutation. ...
Questions and Answers About AEDs and Defibrillation
Questions and Answers About AEDs and Defibrillation

... judge whether defibrillation is needed and then administer the shock. Audible and/or visual prompts guide the user through the process. How does an AED work? A microprocessor inside the defibrillator interprets (analyzes) the victim’s heart rhythm through adhesive electrodes. (Some models of AEDs re ...
Catheter Ablation versus Standard Conventional Treatment in
Catheter Ablation versus Standard Conventional Treatment in

... isolated and (2) sinus rhythm is restored (if not already present). Isolation of the PVs will be proven by identifying the presence or absence of local vein potentials in the vein during sinus rhythm or pacing, typically from the distal coronary sinus, at a slow rate (vein entry). Isolations will be ...
lhnsient Digitoxic Double Tachycardia
lhnsient Digitoxic Double Tachycardia

... several hours to control atrial fibrillation with rapid ventricular response in a patient who gave no history of being on digitalis is considered within therapeutic range. At that time the renal insufficiency secondary to marked dehydration was not appreciated. However, renal insufficiency does not ...
Assessment of Left Ventricular Function in Aortic Stenosis using
Assessment of Left Ventricular Function in Aortic Stenosis using

... Calcific Aortic Stenosis (CAS) is defined as progressive narrowing of the aortic valve leading to subsequent increased afterload which triggers the development of left ventricular hypertrophy. The severity of both valve narrowing and ventricular hypertrophy determine how quickly patients with CAS de ...
Atrial Fibrillation by Dr. Sarma
Atrial Fibrillation by Dr. Sarma

... electrical discharge patterns that make the atria contract very rapidly, with some of the electrical impulses reaching the ventricles and causing them ...
ТАШКЕНТСКАЯ МЕДИЦИНСКАЯ АКАДЕМИЯ
ТАШКЕНТСКАЯ МЕДИЦИНСКАЯ АКАДЕМИЯ

... and 200 ventricular extrasystoles per day. Beats can be single or in pairs. Three or more beats in a row is called a tachycardia ("jogging" tachycardia "short episodes of unstable tachycardia"). Unstable tachycardia called tachycardia episodes lasting less than 30 seconds. Sometimes to refer to 5.3 ...
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... What types of pathology can we identify and study from EKGs? ...
Treating patients with ventricular ectopic beats
Treating patients with ventricular ectopic beats

... specificity and predictive value of VEBs for arrhythmic death in this population. Furthermore, results of the Cardiac Arrhythmia Suppression Trial (CAST) published in 1989 questioned the ...
PDF file - Via Medica Journals
PDF file - Via Medica Journals

... because digitalis toxicity usually causes symptoms, and patients included in studies are closely followed. A second explanation is that digitalized patients have a higher incidence of fatal myocardial infarction and ’other vascular death’ suggesting intravascular thrombosis as the cause of increased ...
06. Interventions for Clients with Dysrhythmias
06. Interventions for Clients with Dysrhythmias

... done by palpating the carotid, brachial, or femoral arteries while observing the monitor for widened complexes, or auscultating for the apical heart sounds. With acute myocardial infarction, PVCs may be considered warning dysrhythmias, possibly heralding the onset of ventricular tachycardia (VT) or ...
Large Right Ventricular Thrombus
Large Right Ventricular Thrombus

... 3). In the apex of the right ventricle, there was an image suggestive of a thrombus. A high frequency probe allowed for a better characterization of this thrombus, which was found to be large, non mobile and multilobed (maximum dimensions of 24 x 11 mm) (Fig. 2). ...
Exercise Management
Exercise Management

... Exercise Management Pathophysiology • Chronic atrial fibrillation is characterized by chaotic, rapid, and irregular atrial depolarizations. It is one of the most common arrhythmias encountered clinically, and it occurs more frequently with advancing age. • It most likely occurs by multiple reentran ...
Lead V6 - UBC Critical Care Medicine
Lead V6 - UBC Critical Care Medicine

... 1, below. You are called to see a 78 year old man in emerg. regarding hypotension and tachycardia. His wife noted he had a fever and was more difficult to rouse this morning. You quickly interpret the EKG, and for the benefit of your med student, you delineate the answers to the 4 questions above. ...
Inflow Valve Regurgitation During Left Ventricular Assist Device
Inflow Valve Regurgitation During Left Ventricular Assist Device

... © 1998 by The Society of Thoracic Surgeons ...
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Document

... Fibrosis is a hallmark of arrhythmogenic structural remodeling • The fundamental mechanisms underlying AF have long been debated, but electrical, contractile, and structural remodeling are each important synergistic contributors to the AF substrate. • In the dog model, atrial fibrosis causes locali ...
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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.
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