Heart introduction
... system (endo means “within”) 2. MYOCARDIUM (middle): composed of cardiac muscle that forms the bulk of heart wall (myo means “muscle”) 3. EPICARDIUM (outer): thin external membrane covering the heart (epi means “on”) ...
... system (endo means “within”) 2. MYOCARDIUM (middle): composed of cardiac muscle that forms the bulk of heart wall (myo means “muscle”) 3. EPICARDIUM (outer): thin external membrane covering the heart (epi means “on”) ...
Electrocardiography_II_Student
... the atria are weak and often of opposite polarity, which results in either no P-waves or a high frequency, low-voltage wavy ECG recording. The QRS-T complexes are normal but irregular as a result of impulses arriving at the AV node irregularly. Heart failure and valvular heart disease are both assoc ...
... the atria are weak and often of opposite polarity, which results in either no P-waves or a high frequency, low-voltage wavy ECG recording. The QRS-T complexes are normal but irregular as a result of impulses arriving at the AV node irregularly. Heart failure and valvular heart disease are both assoc ...
Powerpoint Presentation (P3)
... complex and the ST segment and this point represents zero current in the heart as all parts of the ventricles are depolarized •ST segment depression is usually due to imbalance between supply and demand and will reverse when exercise is stopped during a stress test ...
... complex and the ST segment and this point represents zero current in the heart as all parts of the ventricles are depolarized •ST segment depression is usually due to imbalance between supply and demand and will reverse when exercise is stopped during a stress test ...
Blocks classification by their constancy or steadiness By their
... automatic pacemaker sites; it dominates the cardiac rhythm. In patients with structural heart disease normal or abnormal automaticity from different sites may discharge at rate faster than the sinus node which may lead to overtaking the cardiac rhythm for one cycle or more. The most common explanati ...
... automatic pacemaker sites; it dominates the cardiac rhythm. In patients with structural heart disease normal or abnormal automaticity from different sites may discharge at rate faster than the sinus node which may lead to overtaking the cardiac rhythm for one cycle or more. The most common explanati ...
Cardiac Resynchronization Therapy (CRT)
... simultaneous electrical impulses to both lower heart chambers (the right and left ventricles), it causes the heart to beat in a more synchronized, efficient manner. Biventricular pacing improves the symptoms of about two-thirds of patients undergoing this procedure and also improves survival. ...
... simultaneous electrical impulses to both lower heart chambers (the right and left ventricles), it causes the heart to beat in a more synchronized, efficient manner. Biventricular pacing improves the symptoms of about two-thirds of patients undergoing this procedure and also improves survival. ...
Document
... of abnormal conduction pathways. • The pathways may be the result of: (a) damage to the heart muscle (myocardial infarction caused by ischaemia) (b) the effect of drugs e.g. ß-adrenoceptor agonists, digoxin, quinidine which alter the excitability of the heart muscle ...
... of abnormal conduction pathways. • The pathways may be the result of: (a) damage to the heart muscle (myocardial infarction caused by ischaemia) (b) the effect of drugs e.g. ß-adrenoceptor agonists, digoxin, quinidine which alter the excitability of the heart muscle ...
Unusual Site of Origin of a Non-Automatic Focal Right Ventricular
... Five years later the patient was switched over to propafenone and metoprolol because of amiodarone-induced hyperthyroidism, after which she had recurrences of non-syncopal VT. A repeat electrophysiological study after interruption of antiarrhythmic medication was again negative. She was given sotalo ...
... Five years later the patient was switched over to propafenone and metoprolol because of amiodarone-induced hyperthyroidism, after which she had recurrences of non-syncopal VT. A repeat electrophysiological study after interruption of antiarrhythmic medication was again negative. She was given sotalo ...
Adderall elevated heart rate
... blending and co-packing shelf-stable ingredients. We handle a wide range of commodities and package designs. Comments about the factors other than fitness which may account for variations in resting heart rate (pulse) such as medications, illness and stress. What is a normal resting heart rate? The ...
... blending and co-packing shelf-stable ingredients. We handle a wide range of commodities and package designs. Comments about the factors other than fitness which may account for variations in resting heart rate (pulse) such as medications, illness and stress. What is a normal resting heart rate? The ...
Document
... check-up. On the ECG you see a prolonged PQ interval suggesting a first-degree atrioventricular block. What is the primary pacemaker of the heart? ...
... check-up. On the ECG you see a prolonged PQ interval suggesting a first-degree atrioventricular block. What is the primary pacemaker of the heart? ...
QRS Interval: narrow complexes - Texas Tech University Health
... The Texas Tech University Health Sciences Center Continuing Nursing Education Program is accredited as a provider of continuing nursing education by the American Nurses Credentialing Center's Commission on Accreditation. Provider approved by California Board of Registered Nursing, Provider #CEP11800 ...
... The Texas Tech University Health Sciences Center Continuing Nursing Education Program is accredited as a provider of continuing nursing education by the American Nurses Credentialing Center's Commission on Accreditation. Provider approved by California Board of Registered Nursing, Provider #CEP11800 ...
Slide ()
... A. Left ventricular pressure–volume (P–V) loop, the segments of which correspond to events of the cardiac cycle: diastolic ventricular filling along the passive P–V curve (phase I), isovolumetric contraction (phase II), ventricular ejection (phase III), and isovolumetric relaxation (phase IV). B. Th ...
... A. Left ventricular pressure–volume (P–V) loop, the segments of which correspond to events of the cardiac cycle: diastolic ventricular filling along the passive P–V curve (phase I), isovolumetric contraction (phase II), ventricular ejection (phase III), and isovolumetric relaxation (phase IV). B. Th ...
Atrial Fibrillation
... • Giant breeds of dogs with spontaneous AF are usually started on a beta-blocker to control their heart rate. In some cases, a procedure called electrical cardioversion may be performed with the animal under anesthesia to try and convert the AF back to a normal sinus rhythm. Although the rate of con ...
... • Giant breeds of dogs with spontaneous AF are usually started on a beta-blocker to control their heart rate. In some cases, a procedure called electrical cardioversion may be performed with the animal under anesthesia to try and convert the AF back to a normal sinus rhythm. Although the rate of con ...
Happy Heart Month! - HeartCare Midwest
... These two cardiac electrophysiologists joined HeartCare Midwest in the summer of 2011. With their addition to the team came two new procedures to the program. Dr. Charles has been trained to perform lead extractions, the removal of a dead pacemaker wire using a laser electrode. Dr. Baman brings know ...
... These two cardiac electrophysiologists joined HeartCare Midwest in the summer of 2011. With their addition to the team came two new procedures to the program. Dr. Charles has been trained to perform lead extractions, the removal of a dead pacemaker wire using a laser electrode. Dr. Baman brings know ...
ARVC Patient Information
... Sometimes people may be completely asymptomatic, that is they have no symptoms at all as often the first symptom may be collapse or sudden death. Other people may have symptoms of an erratic heartbeat (palpitations or a racing heart beat) occasionally as their only symptom. Patients with ARVC usuall ...
... Sometimes people may be completely asymptomatic, that is they have no symptoms at all as often the first symptom may be collapse or sudden death. Other people may have symptoms of an erratic heartbeat (palpitations or a racing heart beat) occasionally as their only symptom. Patients with ARVC usuall ...
Heart Function
... how electrical signals initiate heart contraction • The impulse for contraction of the heart is generated in the sino-atrial node (SAN). • This causes the atria to contract forcing blood down to the ventricles. • The impulse travels to the atrio-ventricular node (AVN). • From here it travels down th ...
... how electrical signals initiate heart contraction • The impulse for contraction of the heart is generated in the sino-atrial node (SAN). • This causes the atria to contract forcing blood down to the ventricles. • The impulse travels to the atrio-ventricular node (AVN). • From here it travels down th ...
1. Coronary angioplasty
... A. Their effects are mediated through cyclic AMP. B. The relationship between developed tension in the myocardium and cytosolic calcium concentration remains unaltered. C. They have a negative inotropic action in the presence of severe limitation of coronary blood flow. D. Their inotropic effects ar ...
... A. Their effects are mediated through cyclic AMP. B. The relationship between developed tension in the myocardium and cytosolic calcium concentration remains unaltered. C. They have a negative inotropic action in the presence of severe limitation of coronary blood flow. D. Their inotropic effects ar ...
Interventions for Clients with Dysrhythmias
... Limb leads Standard bipolar limb leads consist of three leads that each measure the electrical activity between two points, and a fourth lead (right leg) that acts solely as a ground electrode. Of the three measuring leads, the right arm is always negative, the left leg is always positive, and the l ...
... Limb leads Standard bipolar limb leads consist of three leads that each measure the electrical activity between two points, and a fourth lead (right leg) that acts solely as a ground electrode. Of the three measuring leads, the right arm is always negative, the left leg is always positive, and the l ...
Cardiac Emergencies
... portion of the heart most often infarcted The left ventricle is the highest powered portion of the heart Pumping power of the heart may be severely reduced ...
... portion of the heart most often infarcted The left ventricle is the highest powered portion of the heart Pumping power of the heart may be severely reduced ...
Case No. 23 - Caangay.com
... infarction & Hypoglycemia • ID: Acute myocardial infarction (MI) is defined as death or necrosis of myocardial cells. MI means that part of the heart muscle suddenly loses it's blood supply. • This accelerated form of atherosclerosis occurs regardless of whether a patient has insulindependent or non ...
... infarction & Hypoglycemia • ID: Acute myocardial infarction (MI) is defined as death or necrosis of myocardial cells. MI means that part of the heart muscle suddenly loses it's blood supply. • This accelerated form of atherosclerosis occurs regardless of whether a patient has insulindependent or non ...
The Heart
... blood to the left atrium from the lungs Ascending Aorta: All oxygen rich blood being pumped from the left ventricle to the systemic circulation ...
... blood to the left atrium from the lungs Ascending Aorta: All oxygen rich blood being pumped from the left ventricle to the systemic circulation ...
Diastolic Heart Failure
... During diastole, when the mitral valve is open, the left atrium is exposed to the loading pressure within the left ventricle Over time, exposure of LA to increased filling pressure will result in its remodeling and increased volume Left atrial size is a useful marker for chronicity of diastolic ...
... During diastole, when the mitral valve is open, the left atrium is exposed to the loading pressure within the left ventricle Over time, exposure of LA to increased filling pressure will result in its remodeling and increased volume Left atrial size is a useful marker for chronicity of diastolic ...
Normal electrocardiographic findings: recognising
... The normal heartbeat is initiated by the sinus node which is located high in the right atrium near the junction of the superior vena cava and the right atrial appendage. To be classified as sinus rhythm, three criteria must be met: (1) there must be a P wave before every QRS complex, (2) there must b ...
... The normal heartbeat is initiated by the sinus node which is located high in the right atrium near the junction of the superior vena cava and the right atrial appendage. To be classified as sinus rhythm, three criteria must be met: (1) there must be a P wave before every QRS complex, (2) there must b ...
Cardiac Emergencies
... Fluid in the lungs due to back pressure from damaged left ventricle Patient feels like they are drowning Acute condition Frequent recurrences Often results in death Controlled by: ...
... Fluid in the lungs due to back pressure from damaged left ventricle Patient feels like they are drowning Acute condition Frequent recurrences Often results in death Controlled by: ...
Electrocardiography
Electrocardiography (ECG or EKG*) is the process of recording the electrical activity of the heart over a period of time using electrodes placed on a patient's body. These electrodes detect the tiny electrical changes on the skin that arise from the heart muscle depolarizing during each heartbeat.In a conventional 12 lead ECG, ten electrodes are placed on the patient's limbs and on the surface of the chest. The overall magnitude of the heart's electrical potential is then measured from twelve different angles (""leads"") and is recorded over a period of time (usually 10 seconds). In this way, the overall magnitude and direction of the heart's electrical depolarization is captured at each moment throughout the cardiac cycle. The graph of voltage versus time produced by this noninvasive medical procedure is referred to as an electrocardiogram (abbreviated ECG or EKG).During each heartbeat, a healthy heart will have an orderly progression of depolarization that starts with pacemaker cells in the sinoatrial node, spreads out through the atrium, passes through the atrioventricular node down into the bundle of His and into the Purkinje fibers spreading down and to the left throughout the ventricles. This orderly pattern of depolarization gives rise to the characteristic ECG tracing. To the trained clinician, an ECG conveys a large amount of information about the structure of the heart and the function of its electrical conduction system. Among other things, an ECG can be used to measure the rate and rhythm of heartbeats, the size and position of the heart chambers, the presence of any damage to the heart's muscle cells or conduction system, the effects of cardiac drugs, and the function of implanted pacemakers.