Chapter 21: Blood Vessels and Circulation
... amount of depolarization occurring during P wave and QRS complex • Small P wave = mass of heart muscle decreased • Large QRS = heart has become enlarged • Small T wave = affected by anything that slows ...
... amount of depolarization occurring during P wave and QRS complex • Small P wave = mass of heart muscle decreased • Large QRS = heart has become enlarged • Small T wave = affected by anything that slows ...
Chronic valve disease
... left heart (mitral and aortic valves) tends to be more clinically significant due the much higher pressure in the left heart and systemic circulation. This disease is progressive, but the rate of progression is usually slow. The age of onset is typically middle age or later, and the incidence of thi ...
... left heart (mitral and aortic valves) tends to be more clinically significant due the much higher pressure in the left heart and systemic circulation. This disease is progressive, but the rate of progression is usually slow. The age of onset is typically middle age or later, and the incidence of thi ...
Q2Bio242NSCC
... d. tachycardia e. ductus arteriosus 4. During the contraction phase, what structure in the heart NEXT picks up the wave of depolarization as it moves across the atria of the heart? a. Purkinje's fibers b. atrioventricular bundle (Bundle of His) c. sinoatrial node d. atrioventricular node e. chordae ...
... d. tachycardia e. ductus arteriosus 4. During the contraction phase, what structure in the heart NEXT picks up the wave of depolarization as it moves across the atria of the heart? a. Purkinje's fibers b. atrioventricular bundle (Bundle of His) c. sinoatrial node d. atrioventricular node e. chordae ...
Name - Ms. Chavey`s Science Class
... Discuss the events that are taking place in the cardiac cycle during left ventricular systole. Be sure the include the following in your description: a. Are the other heart chambers in systole or diastole? b. Are the other heart chambers filling with or emptying blood? c. If they are filling, state ...
... Discuss the events that are taking place in the cardiac cycle during left ventricular systole. Be sure the include the following in your description: a. Are the other heart chambers in systole or diastole? b. Are the other heart chambers filling with or emptying blood? c. If they are filling, state ...
Drugs for Dysrhythmias Expanded Key Concepts
... 23.3 The electrical conduction pathway from the SA node to the AV node to the bundle branches and Purkinje fibers keeps the heart beating in a synchronized manner. Some myocardial cells in these regions have the property of automaticity. The normal rhythm of the heart is established by the SA node, ...
... 23.3 The electrical conduction pathway from the SA node to the AV node to the bundle branches and Purkinje fibers keeps the heart beating in a synchronized manner. Some myocardial cells in these regions have the property of automaticity. The normal rhythm of the heart is established by the SA node, ...
CARDIOLOGY
... 5. Treat atrial fibrillation, usually with a rate-slowing drug plus coumadin. 6. Evaluate patients with stable angina non-invasively for severity of CAD. Treat angina medically with nitrates, beta-blockers, calcium-channel blockers, and aspirin (or Plavix) as appropriate. 7. Attempt to determine whe ...
... 5. Treat atrial fibrillation, usually with a rate-slowing drug plus coumadin. 6. Evaluate patients with stable angina non-invasively for severity of CAD. Treat angina medically with nitrates, beta-blockers, calcium-channel blockers, and aspirin (or Plavix) as appropriate. 7. Attempt to determine whe ...
nicorandil
... Recently, a study published in the European Heart Journal added further clinical support for this idea – these results showed that nicorandil may offer cardioprotective benefits in patients already receiving the maximum amount of conventional anti-anginal therapy12. Researchers in this study saw a 9 ...
... Recently, a study published in the European Heart Journal added further clinical support for this idea – these results showed that nicorandil may offer cardioprotective benefits in patients already receiving the maximum amount of conventional anti-anginal therapy12. Researchers in this study saw a 9 ...
Conducting system of heart
... penetrating A-V bundle fibers which is caused by lesser number of gap junctions between the cells in conducting pathways result in great resistance to conduction of excitatory ions from one fiber to next. Rapid transmission in ventricular purkenji system at a velocity of 1.5 – 4 m/s. Rapid trans ...
... penetrating A-V bundle fibers which is caused by lesser number of gap junctions between the cells in conducting pathways result in great resistance to conduction of excitatory ions from one fiber to next. Rapid transmission in ventricular purkenji system at a velocity of 1.5 – 4 m/s. Rapid trans ...
heart disease
... If you haven’t suffered from heart problems when you apply for life and/or critical illness cover, an underwriter will consider the overall risk of you suffering from this in the future. Like the medical profession, they’ll consider all the risk factors mentioned on the previous page. One risk facto ...
... If you haven’t suffered from heart problems when you apply for life and/or critical illness cover, an underwriter will consider the overall risk of you suffering from this in the future. Like the medical profession, they’ll consider all the risk factors mentioned on the previous page. One risk facto ...
Cardiovascular System
... pulmonary semilunar valve — opening from right ventricle to pulmonary artery ...
... pulmonary semilunar valve — opening from right ventricle to pulmonary artery ...
FREQUENCY ANALYSIS OF THE ECG BEFORE AND DURING
... The frequency content of the ECG of patients during ventricular fibrillation (VF) has been investigated directly by Agizim (1), Nyg~rds (2) and Hulting (3) and indirectly (by filtering) by Kuo (4) in order to des ign a rel iable automated ECG monitoring system that will detect VF quickly without mis ...
... The frequency content of the ECG of patients during ventricular fibrillation (VF) has been investigated directly by Agizim (1), Nyg~rds (2) and Hulting (3) and indirectly (by filtering) by Kuo (4) in order to des ign a rel iable automated ECG monitoring system that will detect VF quickly without mis ...
Long-Term Oral Anticoagulant Therapy in Patients With Unstable
... the fact that he drew attention to the remarkable results that can be achieved with restoration of sinus rhythm.3 It may be that cardioversion had been attempted in a number of patients (some might not even accept the diagnosis of “chronic” atrial fibrillation until electrical cardioversion has been ...
... the fact that he drew attention to the remarkable results that can be achieved with restoration of sinus rhythm.3 It may be that cardioversion had been attempted in a number of patients (some might not even accept the diagnosis of “chronic” atrial fibrillation until electrical cardioversion has been ...
File
... sensation of 'fighting for breath'. Sitting upright or standing may provide some relief by helping to reduce congestion at the apices of the lungs. The patient may be unable to speak and is typically distressed, agitated, cyanosed, sweaty and pale. Respiration is rapid with recruitment of ac ...
... sensation of 'fighting for breath'. Sitting upright or standing may provide some relief by helping to reduce congestion at the apices of the lungs. The patient may be unable to speak and is typically distressed, agitated, cyanosed, sweaty and pale. Respiration is rapid with recruitment of ac ...
sinus node dysfunction - Continuing Medical Education
... • Exercise ECG testing is helpful in the diagnosis only in terms of establishing that there is chronotropic incompetence, i.e. that this is not athletic vagotonia, and this will also guide in the choice of pacemaker, i.e. some form of rate-responsive pacemaker will be necessary for chronotropic inco ...
... • Exercise ECG testing is helpful in the diagnosis only in terms of establishing that there is chronotropic incompetence, i.e. that this is not athletic vagotonia, and this will also guide in the choice of pacemaker, i.e. some form of rate-responsive pacemaker will be necessary for chronotropic inco ...
Scisense Electrophysiology Minimally Invasive Intracardiac Biopotential Measurements for Rodent Models Electrophysiology
... unique Interface Cable. The Interface Box (FI893B) allows connection to any bioamplifier or stimulator via 2 mm pin receptacles. This provides the researcher complete control over which electrodes are used for recording or stimulation (pacing). In addition, reference pins are provided to achieve an ...
... unique Interface Cable. The Interface Box (FI893B) allows connection to any bioamplifier or stimulator via 2 mm pin receptacles. This provides the researcher complete control over which electrodes are used for recording or stimulation (pacing). In addition, reference pins are provided to achieve an ...
Anatomy and physiology of the cardiovascular system
... Veins and the venous reservoir • Low-pressure system for conducting blood back to heart • Valves to prevent stasis • Distend – can accommodate large volumes with little pressure change. “Buffer” for blood volume • Venous reservoirs in lungs, liver, gut and skin – under ...
... Veins and the venous reservoir • Low-pressure system for conducting blood back to heart • Valves to prevent stasis • Distend – can accommodate large volumes with little pressure change. “Buffer” for blood volume • Venous reservoirs in lungs, liver, gut and skin – under ...
A1982MT86600001
... direct cardiology at Cedars of Lebanon Hospital, a community institution. I was amazed by the paucity of knowledge of the hemoclynamics of ischemic heart disease and, in particular, of acute myocardial infarction, which then carried a mortality of 20-25 percent. Empirical approaches to treatment app ...
... direct cardiology at Cedars of Lebanon Hospital, a community institution. I was amazed by the paucity of knowledge of the hemoclynamics of ischemic heart disease and, in particular, of acute myocardial infarction, which then carried a mortality of 20-25 percent. Empirical approaches to treatment app ...
Section 1
... the normalized data for different size individuals, the normal range is about 3.0 – 3.5 L/min/m2 ...
... the normalized data for different size individuals, the normal range is about 3.0 – 3.5 L/min/m2 ...
ARRHYTHMIA An arrhythmia is an abnormal heart rhythm. There
... 2. Atrial flutter – this arrhythmia often occurs in women with heart disease such as congenital heart disease 3. Atrial fibrillation – this arrhythmia often occurs in women with heart disease such as rheumatic heart disease 4. Ventricular tachycardia – this arrhythmia can occur in women with underly ...
... 2. Atrial flutter – this arrhythmia often occurs in women with heart disease such as congenital heart disease 3. Atrial fibrillation – this arrhythmia often occurs in women with heart disease such as rheumatic heart disease 4. Ventricular tachycardia – this arrhythmia can occur in women with underly ...
A Potentially Useful Marker to Determine for Left Ventricular
... deteriorations of the repolarization and depolarization via various invasive and non-invasive tests [13,14]. Interval between the apex point and the endpoint of the T wave in the ECG is known as the Tpeak- Tend (Tp-e) interval and it is a noninvasive parameter which can be used to evaluate the myoca ...
... deteriorations of the repolarization and depolarization via various invasive and non-invasive tests [13,14]. Interval between the apex point and the endpoint of the T wave in the ECG is known as the Tpeak- Tend (Tp-e) interval and it is a noninvasive parameter which can be used to evaluate the myoca ...
contraception for patients with congenital heart disease
... If a woman with a congenital heart defect opts to have an intra-uterine device, a Mirena coil has certain advantages over the traditional copper IUD. More effective contraception than sterilisation. Usually induces amenorrhoea. Needs antibiotic prophylaxis at the time of insertion. Insertion induces ...
... If a woman with a congenital heart defect opts to have an intra-uterine device, a Mirena coil has certain advantages over the traditional copper IUD. More effective contraception than sterilisation. Usually induces amenorrhoea. Needs antibiotic prophylaxis at the time of insertion. Insertion induces ...
12-Lead EKG Interpretation - Mississippi Nurses Association
... Junctional rhythms: Escape rhythms occur when SA node fails to initiate the electrical impulse and another pacemaker assumes the function – AV nodal escape rhythm: rate between 40-60bpm; may or may not see negative P wave before the QRS in Lead II; QRS will be narrow unless there is other underlying ...
... Junctional rhythms: Escape rhythms occur when SA node fails to initiate the electrical impulse and another pacemaker assumes the function – AV nodal escape rhythm: rate between 40-60bpm; may or may not see negative P wave before the QRS in Lead II; QRS will be narrow unless there is other underlying ...
THE CARDIOVASCULAR SYSTEM
... 1. Claudication- dull, cramping pain in the hips, thighs, calves or buttocks 2. Paresthesia- numbness or tingling in the legs or feet 3. Impotence- inability to have erection in males 4. Paresis- weakness in arms or legs 5. Sores or infections that do not heal ...
... 1. Claudication- dull, cramping pain in the hips, thighs, calves or buttocks 2. Paresthesia- numbness or tingling in the legs or feet 3. Impotence- inability to have erection in males 4. Paresis- weakness in arms or legs 5. Sores or infections that do not heal ...
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.