Cardiac Muscle
... gap junctions. The gap junctions are critical to the heart’s ability to be electrically coupled. • They have large mitochondia that produce the energy needed and prevent the heart from fatiguing. • The node cells have the ability to stimulate their own action potentials. This is called automaticity ...
... gap junctions. The gap junctions are critical to the heart’s ability to be electrically coupled. • They have large mitochondia that produce the energy needed and prevent the heart from fatiguing. • The node cells have the ability to stimulate their own action potentials. This is called automaticity ...
EX8
... When the heart is at rest, the inside of the heart muscle cells are negatively charged and the exterior of the cells are positively charged. The cells are said to be polarized. Depolarization and repolarization of the heart muscle cells causes the heart to contract and blood to be pumped throughout ...
... When the heart is at rest, the inside of the heart muscle cells are negatively charged and the exterior of the cells are positively charged. The cells are said to be polarized. Depolarization and repolarization of the heart muscle cells causes the heart to contract and blood to be pumped throughout ...
Heart - Cloudfront.net
... specialized cardiac muscle cells that carry impulses throughout the heart musculature, signaling the chambers to contract in the proper sequence ...
... specialized cardiac muscle cells that carry impulses throughout the heart musculature, signaling the chambers to contract in the proper sequence ...
Cardio Objectives
... Electrical and mechanical activity in the heart Beginning in the SA node, state the normal sequence of cardiac electrical activation and the role played by specialized cells and gap junctions. Predict the consequence of failure to conduct an electrical impulse through any major conducting area of th ...
... Electrical and mechanical activity in the heart Beginning in the SA node, state the normal sequence of cardiac electrical activation and the role played by specialized cells and gap junctions. Predict the consequence of failure to conduct an electrical impulse through any major conducting area of th ...
AV NODE ABLATION FOR ATRIAL FIBRILLATION
... per minute, the ventricles will be "doing their own thing". In almost all individuals after ablation the ventricular rate will be about 40 beats per minute (and very regular). This 40 beats per minute may seem slow, but it is sufficient to maintain your blood pressure and sense of wellbeing at rest. ...
... per minute, the ventricles will be "doing their own thing". In almost all individuals after ablation the ventricular rate will be about 40 beats per minute (and very regular). This 40 beats per minute may seem slow, but it is sufficient to maintain your blood pressure and sense of wellbeing at rest. ...
heart outcomes
... ___ 2. Another word for the contraction of the heart muscle is? ___ 3. Another word for the relaxation of the heart muscle is? ___ 4. List the phases of the cardiac cycle and the length of time required by each phase. ___ 5. What causes the Lubb-Dubb sound of a heart beat? ___ 6. What are the two na ...
... ___ 2. Another word for the contraction of the heart muscle is? ___ 3. Another word for the relaxation of the heart muscle is? ___ 4. List the phases of the cardiac cycle and the length of time required by each phase. ___ 5. What causes the Lubb-Dubb sound of a heart beat? ___ 6. What are the two na ...
Heart Diseases and Disorders
... Millions of people experience irregular heartbeats, called arrhythmias, at some point in their lives. Most of the time, arrhythmias are harmless and happen in healthy people free of heart disease. However, some abnormal heart rhythms can be serious or even deadly. Having other types of heart disease ...
... Millions of people experience irregular heartbeats, called arrhythmias, at some point in their lives. Most of the time, arrhythmias are harmless and happen in healthy people free of heart disease. However, some abnormal heart rhythms can be serious or even deadly. Having other types of heart disease ...
1-Angina-Pectoris - جامعة الكوفة
... B) Exercise ECG : ( in between the attacks only ) - Stress test is considered +ve when : one or more of these changes are present : Symptom : Typical anginal pain during the test. Sign : Fall in blood pressure (10 mmHg or more) suggests ischemia ECG : Depressed ST segment > 1mm . NB : Exercise ...
... B) Exercise ECG : ( in between the attacks only ) - Stress test is considered +ve when : one or more of these changes are present : Symptom : Typical anginal pain during the test. Sign : Fall in blood pressure (10 mmHg or more) suggests ischemia ECG : Depressed ST segment > 1mm . NB : Exercise ...
1-coronary valve
... often described as lub and dub , that occur in sequence with each heart beat. These are the first heart sound (S1) and second heart sound (S2), produced by the closing of the aortic valves and semilunar valves respectively. In addition to these normal sounds, a variety of other sounds may be present ...
... often described as lub and dub , that occur in sequence with each heart beat. These are the first heart sound (S1) and second heart sound (S2), produced by the closing of the aortic valves and semilunar valves respectively. In addition to these normal sounds, a variety of other sounds may be present ...
accelerometer ” heart pump ”
... The accelerometer reads the movement of the heart in three dimensions (x, y, z). The values decide the amount of blood that the centrifugal pump push out. The purpose of this project was to create a model of the heart's blood flow from the left ventricle to the aorta. A rotary pump and a DC motor ar ...
... The accelerometer reads the movement of the heart in three dimensions (x, y, z). The values decide the amount of blood that the centrifugal pump push out. The purpose of this project was to create a model of the heart's blood flow from the left ventricle to the aorta. A rotary pump and a DC motor ar ...
NAME______________________________________ What is a
... A pacemaker uses batteries to send electric signals to your heart to help it pump the right way. It is carried under the skin. ...
... A pacemaker uses batteries to send electric signals to your heart to help it pump the right way. It is carried under the skin. ...
Cardiology Notes
... Type II hyperlipidaemia the most common primary hyperlipidaemia. The picture is similar to familial hypercholesterolaemia but milder. It is characterised by increased levels of LDL-cholesterol (> 4.0 mmol/L). Triglyceride levels are < 2.3 mmol/L. Type IIa hypercholesterolaemia causes heart disease a ...
... Type II hyperlipidaemia the most common primary hyperlipidaemia. The picture is similar to familial hypercholesterolaemia but milder. It is characterised by increased levels of LDL-cholesterol (> 4.0 mmol/L). Triglyceride levels are < 2.3 mmol/L. Type IIa hypercholesterolaemia causes heart disease a ...
Heart Failure
... *Digoxin-0.5-0.8 ng/mL in low EF *Aldosterone inhibitors (class II/III) *CCB avoid non-dihydropyridines/CS ...
... *Digoxin-0.5-0.8 ng/mL in low EF *Aldosterone inhibitors (class II/III) *CCB avoid non-dihydropyridines/CS ...
Rhythmical Excitation of the Heart
... • The discharge rate of the sinus node is considerably faster than the natural selfexcitatory discharge rate of either the A-V node or the Purkinje fibers. • Under abnormal conditions, few other parts of the heart can exhibit intrinsic rhythmical excitation in the same way like the sinus nodal fiber ...
... • The discharge rate of the sinus node is considerably faster than the natural selfexcitatory discharge rate of either the A-V node or the Purkinje fibers. • Under abnormal conditions, few other parts of the heart can exhibit intrinsic rhythmical excitation in the same way like the sinus nodal fiber ...
Advanced Cardiac Life Support (ACLS) Review ® WWW.RN.ORG
... gag reflex, or is not ventilating adequately, an advanced airway may be needed to a) protect airway patency, and b) deliver oxygen efficiently. There are complicated methods that can be usedd to assess whether or nor someone needs an advanced airway. However, in many of the medical emergencies discu ...
... gag reflex, or is not ventilating adequately, an advanced airway may be needed to a) protect airway patency, and b) deliver oxygen efficiently. There are complicated methods that can be usedd to assess whether or nor someone needs an advanced airway. However, in many of the medical emergencies discu ...
![Early Repolarization Syndrome[1]](http://s1.studyres.com/store/data/006078177_1-344159971b6536c9b1cdc8953ff43057-300x300.png)
Early Repolarization Syndrome[1]
... Cellular, Molecular, and Genetic Considerations. Much of the experimental data relative to J-wave syndromes derive from studies involving the coronary-perfused wedge preparation. These studies have demonstrated a common cellular mechanism for the electrocardiographic and arrhythmic manifestations of ...
... Cellular, Molecular, and Genetic Considerations. Much of the experimental data relative to J-wave syndromes derive from studies involving the coronary-perfused wedge preparation. These studies have demonstrated a common cellular mechanism for the electrocardiographic and arrhythmic manifestations of ...
Cardio I
... a. SA node---atrial myocytes---AV node---Bundle of His--- R&L bundle branches--Purkinje fibers---Ventricular myocytes ...
... a. SA node---atrial myocytes---AV node---Bundle of His--- R&L bundle branches--Purkinje fibers---Ventricular myocytes ...
An Update & Suggestions on How to Use It NT-proBNP
... The lack of overlap between the ECG and NT-proBNP opens up the possibility for antiselection in situations where only one test or the other is being performed by an insurer and the applicant is aware of the result of the other test. Since, at present, the resting ECG is more commonly performed in th ...
... The lack of overlap between the ECG and NT-proBNP opens up the possibility for antiselection in situations where only one test or the other is being performed by an insurer and the applicant is aware of the result of the other test. Since, at present, the resting ECG is more commonly performed in th ...
First Aid Vocabulary
... intensity, duration and frequency to achieve or maintain fitness, or other health or athletic objectives Exercise is a Planned Event!! ...
... intensity, duration and frequency to achieve or maintain fitness, or other health or athletic objectives Exercise is a Planned Event!! ...
Lesson Plan
... a neuron or other excitable cell. Atria & Ventricles: Primary chambers of the heart. Ventricles are typically much larger than atria. Atrioventricular (A-V) Node: A group of electrically conducting cells linking the atria to the ventricles. Electrocardiogram: A recording made of the total electrical ...
... a neuron or other excitable cell. Atria & Ventricles: Primary chambers of the heart. Ventricles are typically much larger than atria. Atrioventricular (A-V) Node: A group of electrically conducting cells linking the atria to the ventricles. Electrocardiogram: A recording made of the total electrical ...
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.