The Cardiovascular System: The Heart
... 1st degree AV block is defined by PR intervals greater than ? 200ms 50ms 500ms 300ms 0.1ms ...
... 1st degree AV block is defined by PR intervals greater than ? 200ms 50ms 500ms 300ms 0.1ms ...
electrocardiography
... - P waves are positive in leads II and aVF – the vector of atrial depolarization points downwards and leftwards, towards the positive poles of leads II and aVF (See the ‘Electrocardiography (II)’ chapter). If any of these criteria is not fulfilled, the rhythm is not a sinus rhythm – arrhythmia is ...
... - P waves are positive in leads II and aVF – the vector of atrial depolarization points downwards and leftwards, towards the positive poles of leads II and aVF (See the ‘Electrocardiography (II)’ chapter). If any of these criteria is not fulfilled, the rhythm is not a sinus rhythm – arrhythmia is ...
Sudden Cardiac Death - Backgrounder
... Sudden cardiac arrest (SCA) and the role of transvenous defibrillators (ICD) and sub-cutaneous defibrillators (S-ICD) What Is Sudden Cardiac Arrest? Sudden cardiac arrest (SCA) is a life-threating heart condition that can lead to death if not treated within minutes. SCA results from an irregular or ...
... Sudden cardiac arrest (SCA) and the role of transvenous defibrillators (ICD) and sub-cutaneous defibrillators (S-ICD) What Is Sudden Cardiac Arrest? Sudden cardiac arrest (SCA) is a life-threating heart condition that can lead to death if not treated within minutes. SCA results from an irregular or ...
The Cardiac Cycle
... The heart contains specialized cells that send electrical impulse to cardiac muscle cells. The rhythm of the heart (heartbeat) is controlled by pace-setting (pace maker) cells that control those electrical impulses. Those electrical impulses are what stimulate the series of muscle contractions w ...
... The heart contains specialized cells that send electrical impulse to cardiac muscle cells. The rhythm of the heart (heartbeat) is controlled by pace-setting (pace maker) cells that control those electrical impulses. Those electrical impulses are what stimulate the series of muscle contractions w ...
Anatomy and Electrophysiology of the Heart
... • Electrocardiogram detects electrical activity occurring in heart. • Nerve impulses stimulate cardiac muscles to contract. • Heart consists of two upper chambers, the atria and two lower chambers, the ventricles. • Heart is separated into right and left sides by the septum. ...
... • Electrocardiogram detects electrical activity occurring in heart. • Nerve impulses stimulate cardiac muscles to contract. • Heart consists of two upper chambers, the atria and two lower chambers, the ventricles. • Heart is separated into right and left sides by the septum. ...
SUPRAVENTRICULAR TACHYCARDIA (SVT) TOOLKIT: Diagnosis
... Typical atrial flutter is caused by reentry around the tricuspid annulus , characterized by a “sawtooth pattern” on the ECG produced by the atrial flutter waves; often there is 2:1 conduction to the ventricle, giving a ventricular heart rate of approximately 150 BPM (as in this ECG). Typical atrial ...
... Typical atrial flutter is caused by reentry around the tricuspid annulus , characterized by a “sawtooth pattern” on the ECG produced by the atrial flutter waves; often there is 2:1 conduction to the ventricle, giving a ventricular heart rate of approximately 150 BPM (as in this ECG). Typical atrial ...
USB BASED DUAL CHANNEL DATA ACQISITION SYSTEM FOR
... Before acquiring data the acquisition module must be first calibrated also the gain error should be adjusted through the software. The necessary parameters like the channels being used, the number of samples desired, the time base should also be set as per the signal being plotted. The analog input ...
... Before acquiring data the acquisition module must be first calibrated also the gain error should be adjusted through the software. The necessary parameters like the channels being used, the number of samples desired, the time base should also be set as per the signal being plotted. The analog input ...
Blood Pressure, Heart Rate, Cardiac Output, ECG:
... III. Now calculate Cardiac Output for your resting patient/lab partner. Cardiac Output (resting) = _____________________________ IV. Next calculate Cardiac Output for your non-resting patient/lab partner. Cardiac Output (non-resting) = ___________________________ ...
... III. Now calculate Cardiac Output for your resting patient/lab partner. Cardiac Output (resting) = _____________________________ IV. Next calculate Cardiac Output for your non-resting patient/lab partner. Cardiac Output (non-resting) = ___________________________ ...
Arrhythmogenic Right Ventricular Cardiomyopathy (ARVC)
... cardiomyopathy (LDAC, also known as left-sided ARVC or arrhythmogenic left ventricular cardiomyopathy). These patients have pathological changes that predominantly involve the LV. Differential diagnosis The baseline ECG may resemble Brugada’s syndrome with a right bundle branch morphology seen in th ...
... cardiomyopathy (LDAC, also known as left-sided ARVC or arrhythmogenic left ventricular cardiomyopathy). These patients have pathological changes that predominantly involve the LV. Differential diagnosis The baseline ECG may resemble Brugada’s syndrome with a right bundle branch morphology seen in th ...
Blood Flow Through Heart
... heart stops pumping blood effectively enough to get oxygen to the tissues of the body. Heart attack occurs when the heart does not get enough oxygen and as a result some of the heart muscles die. (Myocardial ...
... heart stops pumping blood effectively enough to get oxygen to the tissues of the body. Heart attack occurs when the heart does not get enough oxygen and as a result some of the heart muscles die. (Myocardial ...
coronary artery disease
... Some patient may present with atypical features like - Pain epigastric region, indigestion, pleuritic chest pain, dyspnoea - 12 lead ECG may be normal - ST – depression and T-wave inversion are highly suggestive of ACS, when associated with anginal chest pain ...
... Some patient may present with atypical features like - Pain epigastric region, indigestion, pleuritic chest pain, dyspnoea - 12 lead ECG may be normal - ST – depression and T-wave inversion are highly suggestive of ACS, when associated with anginal chest pain ...
CHARACTERISTICS OF THE REINDEER ELECTROCARDIOGRAM
... The duration of the various intervals and deflections depended on the heart rate. The duration of the P wave was from 50 to 80 ms, that of the P - Q interval 80 to 200 ms, that of the Q R S complex 50 to 80 ms, that of the T wave 60 to 120 ms, and that of the Q - T interval 200 to 340 ms. The range ...
... The duration of the various intervals and deflections depended on the heart rate. The duration of the P wave was from 50 to 80 ms, that of the P - Q interval 80 to 200 ms, that of the Q R S complex 50 to 80 ms, that of the T wave 60 to 120 ms, and that of the Q - T interval 200 to 340 ms. The range ...
EKG KEY - Belle Vernon Area
... Human body systems depend upon electrical impulses to send and receive messages. Electrical energy is what directs and choreographs the rhythmic beating of your heart. Each beat is initiated by an electrical signal. This electrical activity can be monitored and recorded in the form of a graph. The g ...
... Human body systems depend upon electrical impulses to send and receive messages. Electrical energy is what directs and choreographs the rhythmic beating of your heart. Each beat is initiated by an electrical signal. This electrical activity can be monitored and recorded in the form of a graph. The g ...
BUKOVINІАN STATE MEDICAL UNIVERSITY
... new deflection on the ECG called the QRS complex. The amplitude of the QRS complex is much greater than that of the atrial P wave because the ventricles have so much more muscle mass than the atria. The QRS complex is also more complicated and variable in shape, reflecting the greater intricacy of t ...
... new deflection on the ECG called the QRS complex. The amplitude of the QRS complex is much greater than that of the atrial P wave because the ventricles have so much more muscle mass than the atria. The QRS complex is also more complicated and variable in shape, reflecting the greater intricacy of t ...
3. ECG ANALYSIS 3.1. Heartbeat
... The nodal rhythm is characterized by a change in shape and position of P wave. Three types of nodal rhythm are distinguished according to the pacemaker location: 1. Upper nodal rhythm originates in the atrial part of AV node. P wave precedes QRS complex but the duration of PQ interval is shorter (tr ...
... The nodal rhythm is characterized by a change in shape and position of P wave. Three types of nodal rhythm are distinguished according to the pacemaker location: 1. Upper nodal rhythm originates in the atrial part of AV node. P wave precedes QRS complex but the duration of PQ interval is shorter (tr ...
ecg rhythm interpretation primer - Twin Cities Health Professionals
... When blood flows through the heart, it follows a unidirectional pattern. There are four different valves within the myocardium and their functions are to assure blood flows from the right to left side of the myocardium and always in a “forward” direction. The two valves found between the atria and v ...
... When blood flows through the heart, it follows a unidirectional pattern. There are four different valves within the myocardium and their functions are to assure blood flows from the right to left side of the myocardium and always in a “forward” direction. The two valves found between the atria and v ...
ALS course slide set - the Australian Resuscitation Council
... 1. Is there any electrical activity? 2. What is the ventricular (QRS) rate? 3. Is the QRS rhythm regular or irregular? 4. Is the QRS width normal (narrow) or broad? 5. Is atrial activity present? (If so, what is it: P waves? Other atrial activity?) ...
... 1. Is there any electrical activity? 2. What is the ventricular (QRS) rate? 3. Is the QRS rhythm regular or irregular? 4. Is the QRS width normal (narrow) or broad? 5. Is atrial activity present? (If so, what is it: P waves? Other atrial activity?) ...
The Cardiovascular System
... distributor and passes the action potential to the Bundle of His, which, together with the branching Purkinje fibres, spread the excitation throughout the ventricles. • There is a delay of about 0.1 second from the time when the A.V. node receives stimulation, to when it distributes action potential ...
... distributor and passes the action potential to the Bundle of His, which, together with the branching Purkinje fibres, spread the excitation throughout the ventricles. • There is a delay of about 0.1 second from the time when the A.V. node receives stimulation, to when it distributes action potential ...
Welcome to Vibrationdata Ni hao
... bundle of conduction fibers, called the AV bundle, to the ventricles. Next, the Purkinje fibers bring depolarization to all parts of the ventricles almost simultaneously. ...
... bundle of conduction fibers, called the AV bundle, to the ventricles. Next, the Purkinje fibers bring depolarization to all parts of the ventricles almost simultaneously. ...
3 years old
... 1. Still murmur: It is heard best with the patient supine and at the midpoint between the left sternal border and the apex. This murmur may be confused with the murmur of VSD or mild mitral regurgitation. 2. Pulmonary flow murmur of children: It is common in children and adolescents. It is heard ...
... 1. Still murmur: It is heard best with the patient supine and at the midpoint between the left sternal border and the apex. This murmur may be confused with the murmur of VSD or mild mitral regurgitation. 2. Pulmonary flow murmur of children: It is common in children and adolescents. It is heard ...
Introduction
... The SA node spontaneously depolarize to initiate an action impulse that is rapidly propagated through the atria (causing atrial contract), then slowly through the AV node and rapidly via the bundle branches and Purkinje system to the ventricles, causing ventricular contraction. The electrical activi ...
... The SA node spontaneously depolarize to initiate an action impulse that is rapidly propagated through the atria (causing atrial contract), then slowly through the AV node and rapidly via the bundle branches and Purkinje system to the ventricles, causing ventricular contraction. The electrical activi ...
T-wave change
... • Levine and Ford described for the first time circumferential subendocardial infarction: the clinical picture, ECG, myocardial and coronary anatomy. (Levine H ; Ford R. Circulation 1950;1:246-62) • 5 out of 6 cases were due to mechanical or atherosclerotic obstruction of the left main coronary art ...
... • Levine and Ford described for the first time circumferential subendocardial infarction: the clinical picture, ECG, myocardial and coronary anatomy. (Levine H ; Ford R. Circulation 1950;1:246-62) • 5 out of 6 cases were due to mechanical or atherosclerotic obstruction of the left main coronary art ...
Cardiovascular System Chapter 36 “White” Cardiovascular system
... - The electrical impulse starts down the AV Bundle of His which divides into Right and Left Bundle Branches. - The electrical impulses continue from R and L Bundle Branches to the Purkinje Fibers. The Purkinje Fibers transmits impulses to the myocardial cells causing the ventricles to contract! See ...
... - The electrical impulse starts down the AV Bundle of His which divides into Right and Left Bundle Branches. - The electrical impulses continue from R and L Bundle Branches to the Purkinje Fibers. The Purkinje Fibers transmits impulses to the myocardial cells causing the ventricles to contract! See ...
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.