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arrhythmias following cardiac surgery
arrhythmias following cardiac surgery

... As with so many other arrhythmias no cause was the third post-operative week. The patient is fully digitalized and confined to bed. After a test dose found although there were a number of associated of 3 grains we give 3, 5, and 8 grains at six-hourly factors. Atrial flutter never followed the closu ...
Required Changes to Prior Submission
Required Changes to Prior Submission

... chamber actively expand creates a vacuum in the left ventricle which sucks blood from the left atrium without expending energy. This early filling, which avoids active pumping of blood into the ventricle, saves energy for later in the cycle when the vacuum is lost. Ventricular torsion plays a large ...
Rulebased Assignment of Myocardial Sheet Orientation
Rulebased Assignment of Myocardial Sheet Orientation

... the equator the orientation is similar for both ventricular free walls, changing from around −90◦ at the endocardium to 30−60◦ at the epicardium. Inside the interventricular septum the orientation is changing from 90◦ in the left ventricular sub-endocardium to around −90◦ in the right ventricular su ...
Heart Function: How do we correlate the cardiac cycle to sounds
Heart Function: How do we correlate the cardiac cycle to sounds

... ECGs measure voltage differences between two locations over time. In this case + is left front paw and – is on the back right paw. A wave of depolarization moving towards the positive electrode creates a + deflection and a wave of depolarization moving towards the – electrode creates a negative def ...
Heart Function: How do we correlate the cardiac cycle to sounds
Heart Function: How do we correlate the cardiac cycle to sounds

... ECGs measure voltage differences between two locations over time. In this case + is left front paw and – is on the back right paw. A wave of depolarization moving towards the positive electrode creates a + deflection and a wave of depolarization moving towards the – electrode creates a negative def ...
Heart Function: How do we correlate the cardiac cycle to sounds
Heart Function: How do we correlate the cardiac cycle to sounds

... ECGs measure voltage differences between two locations over time. In this case + is left front paw and – is on the back right paw. A wave of depolarization moving towards the positive electrode creates a + deflection and a wave of depolarization moving towards the – electrode creates a negative def ...
V3ch02a2 - SchultzMedic
V3ch02a2 - SchultzMedic

... Delay in the conjunction of an impulse through the AV node May occur in healthy hearts, but often indicative of ischemia at the AV junction ...
“ Catheter ablation of VT in patients with a structural heart disease
“ Catheter ablation of VT in patients with a structural heart disease

... force members that catheter ablation for VT should be considered early in the treatment of patients with recurrent VT” ...
ecg interpretation: part i
ecg interpretation: part i

... Specialized areas of the myocardium exert electrical control over the cardiac cycle. These areas exhibit physiologic differences from the rest of the myocardium, forming a pathway for electrical impulses which energize the heart muscle. The two types of cardiac cells are contractive and conductive. ...
Analysis of vagal effects on ventricular rhythm in patients with atrial
Analysis of vagal effects on ventricular rhythm in patients with atrial

... effect of vagal stimulation during atrial fibrillation is due to: (1) a direct depressant effect on atrioventricular node conductivity, (2) enhancement of concealed atrioventricular nodal conduction of atrial impulses through augmenting fibrillatory activity, thereby indirectly prolonging atrioventr ...
efficacy of thrombolytic therapy in preserving left ventricular function
efficacy of thrombolytic therapy in preserving left ventricular function

... Echocardiography was done on admission, discharge and three weeks after discharge from hospital. Patients in both group were evaluated for clinical signs of left ventricular dysfunction according to Killip criteria. The study showed a better left ventricular function in group receiving thrombolytic ...
RWMA-DR SHAJUDEEN
RWMA-DR SHAJUDEEN

... Epicardial pacing • The activation sequence is similar to a LBBB pattern except the right ventricular free wall is stimulated ...
Read the latest ARVD Newsletter
Read the latest ARVD Newsletter

... Groningen in the Netherlands. Anke joined us from September 2014-January 2015 to do an honors research clerkship – the last step of her medical school training. Anke worked diligently on a project the Hopkins Genetic Counselors have been longing to put together. We are thrilled to present another fi ...
Myocardial Scar Detected by Cardiovascular Magnetic Resonance
Myocardial Scar Detected by Cardiovascular Magnetic Resonance

... using cardiovascular magnetic resonance imaging is different from the enhancement pattern found in patients with ischemic heart disease which invariably involves the subendocardium and typically occurs in the territory of a coronary artery. Hypertrophic Cardiomyopathy (HCM), Fabry disease and Amyloi ...
Effects of Repeated Sauna Treatment on Ventricular - J
Effects of Repeated Sauna Treatment on Ventricular - J

... atients with chronic heart failure (CHF) have a high prevalence of potentially serious arrhythmias and consequently, a high incidence of sudden cardiac death.1–4 The presence of ventricular arrhythmias defines a higher-risk patient group with either ischemic or nonischemic cardiomyopathy.5–9 Antiarr ...
If patient was sent out for a cath and returned in 12 hours, it is
If patient was sent out for a cath and returned in 12 hours, it is

... otherwise treat the blockage, or no treatment (or only medical treatment) was deemed necessary, answer “1.” Do not count the cath done in conjunction with a PCI done at this facility as a diagnostic cath. If the patient was transferred to another facility on a nonemergent basis later in the stay for ...
Heart Failure Then and Now - For Medical Professionals
Heart Failure Then and Now - For Medical Professionals

... with AF who have well-defined risk factors for proarrhythmia with that agent. (Level of Evidence: A) Pharmacological therapy is not recommended for maintenance of sinus rhythm in patients with advanced sinus node disease or AV node dysfunction unless they have a functioning electronic cardiac pacema ...
Advanced life support guidelines
Advanced life support guidelines

... There is now a single algorithm for ALS management; it is applicable for health care providers using manual, semi-automatic or automatic defibrillators (fig. 1). Each step of the algorithm presupposes that the one before has been unsuccessful. The route of access to the ALS algorithm depends primari ...
Control of ventricular excitability by neurons of the dorsal motor
Control of ventricular excitability by neurons of the dorsal motor

... one component of its potential benefit may be an antiarrhythmic effect.4,5 Experimental studies in animal models have demonstrated profound antiarrhythmic effects of vagus nerve stimulation.6–8 It effectively reduces the restitution slope, prevents alternans, and increases the ventricular effective r ...
Arrhythmogenic Right Ventricular Dysplasia (ARVD) Diagnosis In
Arrhythmogenic Right Ventricular Dysplasia (ARVD) Diagnosis In

... elderly patient older than 65 years. The clinical signs of the patient obtained from CMRI met one major criteria of tissue characterization as fatty replacement in the RV myocardial tissue and one minor criteria of RV dysfunction with apical RV hypokinesia regarding to the original criteria (1994). ...
Download(302)
Download(302)

... For more presentations www.medicalppt.blogspot.com ...
PDF - Circulation: Arrhythmia and Electrophysiology
PDF - Circulation: Arrhythmia and Electrophysiology

... in the overall ICAVB group was significantly worse than that of the age- and sex-specific Olmsted County, Minn, population rates. This difference was, however, attributable to the development of HF and ventricular dysfunction in those who had tested positive for antinuclear antibody (ANA) during adu ...
Heart Physiology File
Heart Physiology File

... – CO (ml/min) = HR (75 beats/min)  SV (70 ml/beat) = 5.25 L/min – Maximal CO is 4–5 times resting CO in nonathletic ...
Intensive care of the patient with acute myocardial infarction
Intensive care of the patient with acute myocardial infarction

... infarction must have good arrangements for the treatment of cardiac arrest. Our own arrangements have been described by Kirby (1967). We use routine methods of mouth-to-mouth breathing and external cardiac massage. We correct acidosis early and ventilate as soon as possible with pure oxygen. A synch ...
Arrhythmia Diagnosis and Management
Arrhythmia Diagnosis and Management

... Rate: usually between 150 to 220/bpm, P wave: obscured if present QRS: wide and bizarre morphology Conduction: as with PVCs Rhythm: Irregular Paroxysmal –starting and stopping suddenly Hallmark of this rhythm is the upward and downward deflection of the QRS complexes around the baseline. The term To ...
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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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