159º - Santeon
... method. This method was applied in 13 CRT patients with a standard dual unipolar or quadripolar LV-lead implanted in a coronary sinus tributary and unipolar stimulation of each electrode. The heart axis during stimulation was calculated from the projection of the maximum vector in the frontal, trans ...
... method. This method was applied in 13 CRT patients with a standard dual unipolar or quadripolar LV-lead implanted in a coronary sinus tributary and unipolar stimulation of each electrode. The heart axis during stimulation was calculated from the projection of the maximum vector in the frontal, trans ...
Cardiology Board Review
... A junctional premature contraction (JPC) is a beat that originates prematurely in the AV node. It can occur sporadically or in a grouped pattern. ...
... A junctional premature contraction (JPC) is a beat that originates prematurely in the AV node. It can occur sporadically or in a grouped pattern. ...
Electrocardiography in horses – part 1
... horses takes no longer than 0.58 seconds (Bonagura and Reef, 2004) (Table 1). It is essential to realize that the Purkinje fibre system is much more extended in horses than in humans and small animals. Therefore, the equine QRS complex provides little or no information about the heart size or the ex ...
... horses takes no longer than 0.58 seconds (Bonagura and Reef, 2004) (Table 1). It is essential to realize that the Purkinje fibre system is much more extended in horses than in humans and small animals. Therefore, the equine QRS complex provides little or no information about the heart size or the ex ...
Quiz 3 Practice Questions For each of the following ionic species
... Bundle Branch Block: Hallmark is a widened/abnormal QRS, but the overall pattern seen depends on whether the block occurs in the right or left bundle branch. T-wave concordance can also go out the window. ...
... Bundle Branch Block: Hallmark is a widened/abnormal QRS, but the overall pattern seen depends on whether the block occurs in the right or left bundle branch. T-wave concordance can also go out the window. ...
aVR ST-segment elevation during narrow QRS complex tachycardia
... the shift is controversial. It has been proposed that it may be the consequence of selective hypertrophy of the LV postero-basal wall without irrigation involvement (irrigated by the right coronary artery). The anterior and lateral walls, irrigated by the left coronary artery, are thin and possibly ...
... the shift is controversial. It has been proposed that it may be the consequence of selective hypertrophy of the LV postero-basal wall without irrigation involvement (irrigated by the right coronary artery). The anterior and lateral walls, irrigated by the left coronary artery, are thin and possibly ...
Chapter01_Detailed_Answers
... perform an assessment that includes, but is not limited to, such things as checking for a pulse, taking the patient’s blood pressure and assessing the patient’s the SPO2 (pulse oximetry). It can, however, be used to identify irregularities in the heart rhythm, reveal the presence of, injury of, deat ...
... perform an assessment that includes, but is not limited to, such things as checking for a pulse, taking the patient’s blood pressure and assessing the patient’s the SPO2 (pulse oximetry). It can, however, be used to identify irregularities in the heart rhythm, reveal the presence of, injury of, deat ...
Cardiac Arrythmias
... Third Degree AV Block Complete AV disassociation and ventricles kick into to pace the heart No relationship between p waves and QRS Slow heart rate Stokes-Adams Syndrome: 3rd degree AV block has such a slow ventricular rate that blood does not get to the brain and patient loses consciousnes ...
... Third Degree AV Block Complete AV disassociation and ventricles kick into to pace the heart No relationship between p waves and QRS Slow heart rate Stokes-Adams Syndrome: 3rd degree AV block has such a slow ventricular rate that blood does not get to the brain and patient loses consciousnes ...
15-Lead ECG
... The use of the additional leads might not only confirm the presence of AMI, but also provide a more accurate reflection of the true extent of myocardial damage. May help clinicians identify the occluded vessel before PCI, which can help in stratifying risk and planning the procedure, and in identify ...
... The use of the additional leads might not only confirm the presence of AMI, but also provide a more accurate reflection of the true extent of myocardial damage. May help clinicians identify the occluded vessel before PCI, which can help in stratifying risk and planning the procedure, and in identify ...
Origin and Conduction of the Heart Beat
... mammals. This structure contains a group of nerve cells near the junction of and known as the or with an intrinsic rhythmic rate of 40 to 60 beats per minute. This is the area of heart beat initiation. A wave of nervous excitation in the SA node causes the atria to ...
... mammals. This structure contains a group of nerve cells near the junction of and known as the or with an intrinsic rhythmic rate of 40 to 60 beats per minute. This is the area of heart beat initiation. A wave of nervous excitation in the SA node causes the atria to ...
Cardiovascular System II
... • The 3 augmented leads simply add a second triangular box – if the standard Einthoven triangle and the augmented lead triangle were drawn together, they would form a 6-pointed star. • The 6 precordial leads utilize an exploring electrode that is placed at 6 points forming a ring around the left che ...
... • The 3 augmented leads simply add a second triangular box – if the standard Einthoven triangle and the augmented lead triangle were drawn together, they would form a 6-pointed star. • The 6 precordial leads utilize an exploring electrode that is placed at 6 points forming a ring around the left che ...
Bio 238 Exam #1 Review Guide. 100 multiple choice questions
... What factors increase contractility of heart muscle? What is the effect of B-blockers on contraction? Name a few common B-blockers Why does tachycardia not always have an effect on cardiac output? How is fetal bloodflow different from adult bloodflow through the heart? ...
... What factors increase contractility of heart muscle? What is the effect of B-blockers on contraction? Name a few common B-blockers Why does tachycardia not always have an effect on cardiac output? How is fetal bloodflow different from adult bloodflow through the heart? ...
Anatomy and Physiology
... • Muscle cells in conducting system coordinate beat • Contractile cells contract to propel blood • Electrocardiograph (ECG, EKG) shows electrical events of heart beat • App called cardiograph ...
... • Muscle cells in conducting system coordinate beat • Contractile cells contract to propel blood • Electrocardiograph (ECG, EKG) shows electrical events of heart beat • App called cardiograph ...
Recognition of Acute Coronary Syndrome in the Clinical Setting
... The recognition of acute coronary syndrome (ACS), and of stable and unstable angina in any care setting, requires a thorough knowledge of not only the obvious, but also and especially of the not so obvious electrocardiographic (ECG) patterns suggestive of ischemic heart disease. This article explore ...
... The recognition of acute coronary syndrome (ACS), and of stable and unstable angina in any care setting, requires a thorough knowledge of not only the obvious, but also and especially of the not so obvious electrocardiographic (ECG) patterns suggestive of ischemic heart disease. This article explore ...
Abnormal ecg readings
... • It occurs in about 5 out of every 10,000 babies • Ventricular septal defect (hole between the right and left ventricles of the heart) • Narrowing of the pulmonary outflow tract (tube that connects the heart with the lungs) ...
... • It occurs in about 5 out of every 10,000 babies • Ventricular septal defect (hole between the right and left ventricles of the heart) • Narrowing of the pulmonary outflow tract (tube that connects the heart with the lungs) ...
A PC Based Biological Signal Monitor Using NI
... D. Conduction system of the heart Located in the right atrium at the superior vena cava is the sinus node (senatorial or SA node) which consists of specialized muscle cells [11]. The SA nodal cells are selfexcitatory, pacemaker cells. They generate an action potential at the rate of (about 60 to 100 ...
... D. Conduction system of the heart Located in the right atrium at the superior vena cava is the sinus node (senatorial or SA node) which consists of specialized muscle cells [11]. The SA nodal cells are selfexcitatory, pacemaker cells. They generate an action potential at the rate of (about 60 to 100 ...
Cardiovascular Pharmacology
... At the conclusion of this class (and after some practice) the nurse will be able to: 1. State the four characteristics of cardiac muscle, and relate these characteristics to cardiac output. 2. Trace the flow of blood through the heart & lungs, naming all associated structures 3. Trace electrical co ...
... At the conclusion of this class (and after some practice) the nurse will be able to: 1. State the four characteristics of cardiac muscle, and relate these characteristics to cardiac output. 2. Trace the flow of blood through the heart & lungs, naming all associated structures 3. Trace electrical co ...
AED Study Notes
... From Arrhythmia Recognition: The Art of Interpretation, courtesy of Tomas B. Garcia, MD. ...
... From Arrhythmia Recognition: The Art of Interpretation, courtesy of Tomas B. Garcia, MD. ...
Cardiac arrest due to torsades de pointes in a
... Kurita et al observed that complete heart block patients with heart rates of <60 beats per minute would have widening of their QT intervals. In addition, they found that patients with QT intervals ≥550 ms had an increased incidence of TdP (4). The descending limb of the T wave represents the transmu ...
... Kurita et al observed that complete heart block patients with heart rates of <60 beats per minute would have widening of their QT intervals. In addition, they found that patients with QT intervals ≥550 ms had an increased incidence of TdP (4). The descending limb of the T wave represents the transmu ...
Cardiomyopathy
... Heart muscle’s ability to act as a pump (the engine of the body) becomes poor >>>>>heart failure ...
... Heart muscle’s ability to act as a pump (the engine of the body) becomes poor >>>>>heart failure ...
Clinical Information
... broad T-wave? Can you palpate a pulse with each ECG complex? Does it more closely resemble Figures 2 and 3? If uncertain, increase the current (remember to warn the conscious patient first). Artifact will increase in size as current is increased. If it’s artifact you are dealing with, try positioning ...
... broad T-wave? Can you palpate a pulse with each ECG complex? Does it more closely resemble Figures 2 and 3? If uncertain, increase the current (remember to warn the conscious patient first). Artifact will increase in size as current is increased. If it’s artifact you are dealing with, try positioning ...
1.5. Electrocardiogr..
... Unit 1 Concepts in clinical exercise assessment 12-Lead ECG Procedures Electrodes and Leads • On a standard twelve-lead ECG, ten electrodes are used; six placed on the chest, and four placed on or near the limbs (one each). Of the leads placed on the limbs, only three are used to measure the electri ...
... Unit 1 Concepts in clinical exercise assessment 12-Lead ECG Procedures Electrodes and Leads • On a standard twelve-lead ECG, ten electrodes are used; six placed on the chest, and four placed on or near the limbs (one each). Of the leads placed on the limbs, only three are used to measure the electri ...
Electrocardiographic changes in Chronic Obstructive Pulmonary
... indicator5. ECG abnormalities corresponding with raised PASP is present in patients long before they have the symptoms of right heart failure7,8. Recent studies in rats and humans have illustrated that even a mildly increased right ventricular pressure load is associated with substantial changes in ...
... indicator5. ECG abnormalities corresponding with raised PASP is present in patients long before they have the symptoms of right heart failure7,8. Recent studies in rats and humans have illustrated that even a mildly increased right ventricular pressure load is associated with substantial changes in ...
Electrocardiography Heart Anatomy
... of the escape mechanism. May progress to ventricular standstill Independent P waves and QRS's with no relationship between the two (AV dissociation – separate atrial & ventricular rates) ...
... of the escape mechanism. May progress to ventricular standstill Independent P waves and QRS's with no relationship between the two (AV dissociation – separate atrial & ventricular rates) ...
HT, LDL , DM, etc
... unexpected loss of heart function, breathing and consciousness. Sudden cardiac arrest usually results from an electrical disturbance in your heart that disrupts its pumping action, stopping blood flow to the rest of your body. Sudden cardiac arrest is different from a heart attack, which occurs when ...
... unexpected loss of heart function, breathing and consciousness. Sudden cardiac arrest usually results from an electrical disturbance in your heart that disrupts its pumping action, stopping blood flow to the rest of your body. Sudden cardiac arrest is different from a heart attack, which occurs when ...
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.