Heart rate
... Neurogenic pacemakers: rhythm generated in neurons (some invertebrates) Myogenic pacemakers: rhythm generated in myocytes (vertebrates and some invertebrates) ...
... Neurogenic pacemakers: rhythm generated in neurons (some invertebrates) Myogenic pacemakers: rhythm generated in myocytes (vertebrates and some invertebrates) ...
Beep . . . Beep . . . Beep . . . Anesthetic Monitors
... sized blood pressure cuff is imperative for providing the most accurate results. The width of the cuff should extend 40% around the circumference of the limb. When the cuff is determined to be too small, the next wider size should be selected. In cats, it is acceptable to use a cuff that is only 30% ...
... sized blood pressure cuff is imperative for providing the most accurate results. The width of the cuff should extend 40% around the circumference of the limb. When the cuff is determined to be too small, the next wider size should be selected. In cats, it is acceptable to use a cuff that is only 30% ...
CHAPTER 12 Bradycardia
... The effect of atropine in the setting of bradycardia is to block parasympathetic receptors, and thus augment sympathetic drive. Atropine acts primarily at the sinus node and atrioventricular (AV) node. However, in third-degree heart block, the ventricular rate is determined by the escape pacemaker o ...
... The effect of atropine in the setting of bradycardia is to block parasympathetic receptors, and thus augment sympathetic drive. Atropine acts primarily at the sinus node and atrioventricular (AV) node. However, in third-degree heart block, the ventricular rate is determined by the escape pacemaker o ...
Left anterior fascicular VT
... The basis of his comment is that he saw 1 (ONE) patient with this characteristic (AV dissociation, wide complex, not VT) (perfectly explained by him, so no need for me to repeat it). That means that his UNIVERSE is composed by another 99 AV dissociations that were VT. (one case 1%, thus 100 is the t ...
... The basis of his comment is that he saw 1 (ONE) patient with this characteristic (AV dissociation, wide complex, not VT) (perfectly explained by him, so no need for me to repeat it). That means that his UNIVERSE is composed by another 99 AV dissociations that were VT. (one case 1%, thus 100 is the t ...
Nonlinear Cardiac Dynamics
... recorded from surface electrocardiograms or cardiac muscle electrograms (electrical pulses per minute). These two heart rates are similar but not identical. Notably, in some diseased hearts it is possible for the developed ventricular pressure to be so weak that cardiac ejections occur only on every ...
... recorded from surface electrocardiograms or cardiac muscle electrograms (electrical pulses per minute). These two heart rates are similar but not identical. Notably, in some diseased hearts it is possible for the developed ventricular pressure to be so weak that cardiac ejections occur only on every ...
Cardiac AP Review Notes
... o Bundle of His (AV bundle) o Right and left bundle branches o Purkinje fibers ...
... o Bundle of His (AV bundle) o Right and left bundle branches o Purkinje fibers ...
Notes: Cardiovascular 2
... SA node (sino-atrial node) acts as the heart’s “pacemaker” cells whose primary function is electrical conduction, not contractility the action potential produced by its depolarization spreads across the atria (remember that action potential is the movement of molecules across the membranes of ...
... SA node (sino-atrial node) acts as the heart’s “pacemaker” cells whose primary function is electrical conduction, not contractility the action potential produced by its depolarization spreads across the atria (remember that action potential is the movement of molecules across the membranes of ...
CONGESTIVE HEART FAILURE - Home Page
... Diastolic congestive heart failure is the inability of the heart to pump blood at an adequate rate to fill tissue metabolic requirements or the ability to do so only at an elevated filling pressure. It occurs because the heart has trouble relaxing adequately between contractions, (diastole), to allo ...
... Diastolic congestive heart failure is the inability of the heart to pump blood at an adequate rate to fill tissue metabolic requirements or the ability to do so only at an elevated filling pressure. It occurs because the heart has trouble relaxing adequately between contractions, (diastole), to allo ...
Community Report 2014 - University of Ottawa Heart Institute
... “We are taking part in a historic milestone as we begin the construction of the most significant expansion of the Heart Institute since its foundation. Our new facility will not only reinforce our cardiovascular care, research, and training capacities, but it will ensure that our patients continue t ...
... “We are taking part in a historic milestone as we begin the construction of the most significant expansion of the Heart Institute since its foundation. Our new facility will not only reinforce our cardiovascular care, research, and training capacities, but it will ensure that our patients continue t ...
Hospital X Is Among First Hospitals in U
... Implantable cardiac devices such as ICDs and CRT-D devices are designed to treat a variety of problems that stem from a faulty electrical system in the heart. The devices benefit patients who experience dangerously erratic heart beats, have experienced a previous heart attack or have survived sudden ...
... Implantable cardiac devices such as ICDs and CRT-D devices are designed to treat a variety of problems that stem from a faulty electrical system in the heart. The devices benefit patients who experience dangerously erratic heart beats, have experienced a previous heart attack or have survived sudden ...
Detection of Atrial Fibrillation in ECGs
... An automatic detection tool for atrial fibrillation is the primary application of our rhythm classification tool – the original motivation of our problem was that arrhythmia are often only captured in Holter recordings that are too long for visual scanning by doctors. Using our best performing set o ...
... An automatic detection tool for atrial fibrillation is the primary application of our rhythm classification tool – the original motivation of our problem was that arrhythmia are often only captured in Holter recordings that are too long for visual scanning by doctors. Using our best performing set o ...
Heart Physiology and the Pacemaker (Comparison of voltage
... Results can be used to better understand voltage changes in various sections of the heart with or without broken cells in order to see if an artificial pacemaker would be needed. ...
... Results can be used to better understand voltage changes in various sections of the heart with or without broken cells in order to see if an artificial pacemaker would be needed. ...
Discomfort radiating to the back, jaw, throat, or arm
... Premature heartbeat occurs when the heart's regular rhythm is interrupted by early or premature beats. Fibrillation describes a heartbeat that is chaotic, or irregular, and may seem to skip beats or beat out of rhythm. This occurs when a chamber of the heart goes into spasm and fails to pump. ...
... Premature heartbeat occurs when the heart's regular rhythm is interrupted by early or premature beats. Fibrillation describes a heartbeat that is chaotic, or irregular, and may seem to skip beats or beat out of rhythm. This occurs when a chamber of the heart goes into spasm and fails to pump. ...
Chapter 20 - Dr. Jerry Cronin
... ventricles by giving an “atrial kick” before the ventricles contract. • The "bottom part of the heart" is a strong pump consisting of the right and left ventricles. It’s the main pump for the pulmonary and systemic circuits. ...
... ventricles by giving an “atrial kick” before the ventricles contract. • The "bottom part of the heart" is a strong pump consisting of the right and left ventricles. It’s the main pump for the pulmonary and systemic circuits. ...
Dr.Yoused Aljeesh Dr. Motasem Salah The Heartbeat
... On completion of this chapter, the learner will be able to: 1. Explain cardiac physiology in relation to cardiac anatomy and the conduction system of the heart. 2. Incorporate assessment of functional health patterns and cardiac risk factors into the health. 3. Identify the clinical significance and ...
... On completion of this chapter, the learner will be able to: 1. Explain cardiac physiology in relation to cardiac anatomy and the conduction system of the heart. 2. Incorporate assessment of functional health patterns and cardiac risk factors into the health. 3. Identify the clinical significance and ...
Document
... R (total) = R (mains supply) + R (knife) + R (hand-to-knife; contact)+ R (body) + R (body-to-floor) + R (earth return path). Of all of these, the resistance of the earth, the knife and the mains supply are less than a few ohms and can be neglected. The body resistance (arm, trunk, leg) is about 300 ...
... R (total) = R (mains supply) + R (knife) + R (hand-to-knife; contact)+ R (body) + R (body-to-floor) + R (earth return path). Of all of these, the resistance of the earth, the knife and the mains supply are less than a few ohms and can be neglected. The body resistance (arm, trunk, leg) is about 300 ...
Cardiac Review 10/2008 - For Medical Professionals
... delivery. However, removing the facemask just 1 cm from the face reduced the inspired dose by approximately 50 percent, and a 2cm distance results in an 80 percent reduction. When a facemask is used, it should be placed snugly over the face. The nose is an efficient filter for particles in aerosol; ...
... delivery. However, removing the facemask just 1 cm from the face reduced the inspired dose by approximately 50 percent, and a 2cm distance results in an 80 percent reduction. When a facemask is used, it should be placed snugly over the face. The nose is an efficient filter for particles in aerosol; ...
Part 1: The Electrocardiogram
... Background The cardiac cycle involves a sequential contraction of the atria and the ventricles. The combined electrical activity of the different myocardial cells produces electrical currents that spread through the body fluids. These currents are large and can be detected by recording electrodes pl ...
... Background The cardiac cycle involves a sequential contraction of the atria and the ventricles. The combined electrical activity of the different myocardial cells produces electrical currents that spread through the body fluids. These currents are large and can be detected by recording electrodes pl ...
Shore Staffing Inc. Telemetry Competency Test Employee name
... Please circle or write in (where applicable) the correct answer for each question below. There is only 1 correct answer per question. 1. On ECG, persistent significant ST-segment elevation is significant because it indicates: a) myocardial injury b) myocardial ischemia 2. The nurse receives the bloo ...
... Please circle or write in (where applicable) the correct answer for each question below. There is only 1 correct answer per question. 1. On ECG, persistent significant ST-segment elevation is significant because it indicates: a) myocardial injury b) myocardial ischemia 2. The nurse receives the bloo ...
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.