Heart_Rate_(HR)
... Measurement of HR • Plethysmograph or ECG techniques • ECG superior as distinguishable R peak • HR derived by – Sensors: Limb or chest electrodes – amplification of ECG – Measuring either the average or instantaneous time interval between two R peaks ...
... Measurement of HR • Plethysmograph or ECG techniques • ECG superior as distinguishable R peak • HR derived by – Sensors: Limb or chest electrodes – amplification of ECG – Measuring either the average or instantaneous time interval between two R peaks ...
presentation
... Benefit: This allows physicians to assess their patients in real time for ischemic heart disease. This shortened time allows for faster diagnosis by our doctors and thereby allowing for faster medical administration to their patients. ...
... Benefit: This allows physicians to assess their patients in real time for ischemic heart disease. This shortened time allows for faster diagnosis by our doctors and thereby allowing for faster medical administration to their patients. ...
Introduction to Clinical Electrocardiography
... The heart is an electrical organ, and its activity can be measured noninvasively Wealth of information related to: ...
... The heart is an electrical organ, and its activity can be measured noninvasively Wealth of information related to: ...
Introduction to Clinical Electrocardiography
... The heart is an electrical organ, and its activity can be measured noninvasively Wealth of information related to: ...
... The heart is an electrical organ, and its activity can be measured noninvasively Wealth of information related to: ...
Mean electrical axis
... o If someone, for example, has an infarction, we can determine its location using the leads. More leads lead to more accuracy in determining the location. o Lead I, V3, and V4 aberrant: anterior infarction (LAD) o V6 and aVF: inferior infacrction (Right coronary artery) If the person is fat or if we ...
... o If someone, for example, has an infarction, we can determine its location using the leads. More leads lead to more accuracy in determining the location. o Lead I, V3, and V4 aberrant: anterior infarction (LAD) o V6 and aVF: inferior infacrction (Right coronary artery) If the person is fat or if we ...
The 12-Lead EKG Chapter 12
... (limb leads+ augmented leads) • Purpose is to determine the direction of the QRS axis • Each +& - pole is assigned a degree number 00 to ...
... (limb leads+ augmented leads) • Purpose is to determine the direction of the QRS axis • Each +& - pole is assigned a degree number 00 to ...
EE 4BD4 Lecture 21 - McMaster University
... • 1947 Beck reported a successful cardiac defibrillation • 1952 Paul Zoll reported a closed-chest external electrical cardiac pacemaker using surface electrodes, 2 ms pulses, 100-200 mA • Caused pain and burns ...
... • 1947 Beck reported a successful cardiac defibrillation • 1952 Paul Zoll reported a closed-chest external electrical cardiac pacemaker using surface electrodes, 2 ms pulses, 100-200 mA • Caused pain and burns ...
Physical therapy evaluation for cardiovascular disorders
... • Electrocardiograph: A device used to detect electrical activity of the heart over a period of time. • The ECG allows observation of the heart electrical activity by visualizing waveform beat origin from SA node down to purkinje fibres. • Types of ECG: • 12 leads ECG • 5 Leads ECG • 3 Leads ECG ...
... • Electrocardiograph: A device used to detect electrical activity of the heart over a period of time. • The ECG allows observation of the heart electrical activity by visualizing waveform beat origin from SA node down to purkinje fibres. • Types of ECG: • 12 leads ECG • 5 Leads ECG • 3 Leads ECG ...
Ventricular Conduction Disorders.
... Left Bundle Branch Block. • Block of the left bundle or both fasicles of the left bundle. • Electrical potential must travel down RBB. • De-polarisation from right to left via cell transmission. • Cell transmission longer due to LV mass. ...
... Left Bundle Branch Block. • Block of the left bundle or both fasicles of the left bundle. • Electrical potential must travel down RBB. • De-polarisation from right to left via cell transmission. • Cell transmission longer due to LV mass. ...
Understanding EKG
... – Voltage is recorded between a single “exploratory electrode” placed on body and an electrode built into the electrocardiograph. – Placed on right arm, left arm, left leg, and chest. • Allow to view the changing pattern of electrical activity from different perspectives. ...
... – Voltage is recorded between a single “exploratory electrode” placed on body and an electrode built into the electrocardiograph. – Placed on right arm, left arm, left leg, and chest. • Allow to view the changing pattern of electrical activity from different perspectives. ...
EKG Fundamentals
... The Equiphasic Approach There are two steps to this method. 1. Determine which lead contains the most equiphasic QRS complex. The fact that the QRS complex in this lead is equally positive and negative indicates that the net electrical vector (i.e. overall QRS axis) is perpendicular to the axis of t ...
... The Equiphasic Approach There are two steps to this method. 1. Determine which lead contains the most equiphasic QRS complex. The fact that the QRS complex in this lead is equally positive and negative indicates that the net electrical vector (i.e. overall QRS axis) is perpendicular to the axis of t ...
Understanding the 12-lead ECG, part II
... Perfused by the circumflex artery Muscular, contributes significantly to the heart’s pumping ability Monitored by precordial (chest) and frontal (limb) leads STST-segment elevation will appear in leads I, aVL, V5, V6 ...
... Perfused by the circumflex artery Muscular, contributes significantly to the heart’s pumping ability Monitored by precordial (chest) and frontal (limb) leads STST-segment elevation will appear in leads I, aVL, V5, V6 ...
study for circulatory system
... Label the parts of the heart and coronary vessels, on both an external and an internal view. Trace blood from the vena cavae to the aorta, naming all the heart parts (both valves and chambers) encountered along this path. Name these structures on a heart. Path of Blood Through the Heart: Superior & ...
... Label the parts of the heart and coronary vessels, on both an external and an internal view. Trace blood from the vena cavae to the aorta, naming all the heart parts (both valves and chambers) encountered along this path. Name these structures on a heart. Path of Blood Through the Heart: Superior & ...
Wide Complex Rhythms
... - DC shock is indicated if a patient is haemodynamically unstable - drug therapy is indicated for haemodynamically stable monomorphic VT: (i) amiodarone: may terminate VT but is negatively inotropic (ii) sotalol and procainamide are more effective than lignocaine but are associated with significant ...
... - DC shock is indicated if a patient is haemodynamically unstable - drug therapy is indicated for haemodynamically stable monomorphic VT: (i) amiodarone: may terminate VT but is negatively inotropic (ii) sotalol and procainamide are more effective than lignocaine but are associated with significant ...
Ventricular Hypertrophy - Cardiac and Stroke Networks in
... since the phases of ventricular activation, 2 + 3 occur together then the ↑ forces of activation may cancel each other out giving rise to a normal QRS amplitude. ...
... since the phases of ventricular activation, 2 + 3 occur together then the ↑ forces of activation may cancel each other out giving rise to a normal QRS amplitude. ...
V. Electrocardiogram (EKG or ECG
... 1. SA node (AKA pacemaker) – initiates sinus rhythm to determine heart rate/ depolarization; atrial excitation 2. AV node – depolarization spreads through gap junctions 3. AV Bundle of His – ventricular excitation Right and Left Bundle branches alone interventricular septum 4. Purkinje fiber ...
... 1. SA node (AKA pacemaker) – initiates sinus rhythm to determine heart rate/ depolarization; atrial excitation 2. AV node – depolarization spreads through gap junctions 3. AV Bundle of His – ventricular excitation Right and Left Bundle branches alone interventricular septum 4. Purkinje fiber ...
Electrocardiography
... the average of the three limb leads. This approximates common, or average, potential over the body ...
... the average of the three limb leads. This approximates common, or average, potential over the body ...
The PQRSTs of ECGs
... forms to determine if they are of normal variation in height and width. This can be helpful in determining if there are any criteria for enlargement of the atria or ventricles. Determining the mean electrical axis (MEA) can indicate ventricular enlargement. The simplest method to attain the MEA is t ...
... forms to determine if they are of normal variation in height and width. This can be helpful in determining if there are any criteria for enlargement of the atria or ventricles. Determining the mean electrical axis (MEA) can indicate ventricular enlargement. The simplest method to attain the MEA is t ...
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.