ECG is electric signal generated by the activity of the heart, and it plays critical role in heart related disease and disorder such as cardiovascular disease (CVD), pulmonary disease, and sudden cardiac arrest (SCA) \cite{huigen2002investigation,chi2010dry,refet2008biopotential, malmivuo1995bioelectromagnetism}. EMG represents the activity of skeletal muscles by electrical signal. This signal has been utilised to analyse medical abnormality, muscle activation level, and recruitment order \cite{de2002surface,fridlund1986guidelines, de1997use, merletti2009technology}. Heart rate (HR), or also known as heart pulse, represents the speed of the heartbeat \cite{allen2007photoplethysmography,shelley2007photoplethysmography}. HR has been become the
When I did my own EKG lab testing I used the following materials: BIOPAC electrode lead set (SS2L), BIOPAC disposable vinyl electrodes (EL503), Cot, BIOPAC electrodes, Computer Sytem, BIOPAC Student Lab software v3.0 or greater, and BIOPAC acquisition unit (MP30). When all these materials are available the computer was turned on and three of the electrodes were placed on the body of my teammate. Two electrodes were positioned on the medial surface of each leg just above the ankle, and the last electrode was on the right anterior forearm at her wrist. When these were attached the subject was asked to lie down on the cot and relax. We then attached her to the EKG machine with three colored cables. The white cable was placed on the electrode on the right forearm, the black cable was placed on right leg and the red cable was attached to the electrode on the left leg.
The EKG is read by a doctor or specialist, such as an internist, family medicine doctor, electrophysiologist, cardiologist, anesthesiologist, or surgeon. The doctor will look at the pattern of spikes and dips on your EKG to check the electrical activity in different parts of your heart. The spikes and dips are grouped into different sections that show how your heart is working
Great post. I like the points you outlined about assessment of Mr. J. You started with maintaining ABC’s to checking lower extremities pulses to ensure that it is not cut off by the tight constrictive band of the eschar. ECG should be monitored at least the first 24 hours because Mr. J is prone to cardiac arrest due to high electrical voltage injury. Fluid resuscitation with 14 or 16 gauge preferably through unburned tissue, and infusion of lactated Ringer’s solution will help to prevent shock. Assessment of vital signs and pain is very important, the nurse should also assess for history of tetanus immunization because burn wounds are prone to tetanus. Mr.’s brief medical history is important in case he has any allergies, current medical
The goal of the electrocardiography labs was to evaluate the electrical currents within the cardiac cycles. The electrical events were recoded on the ECG under different physiological conditions, such as body position and breathing. Table 1 illustrates the heart rate under various conditions. It concludes that after exercise the cardiac cycle is working the fastest. When comparing supine and seated positions, seated is exhibiting faster cardiac cycles.
A 12-lead electrocardiogram (ECG) monitors and records the heart's electrical activity via electrodes placed on the surface of the body. ECG recording analysis aids us in understanding the rate at which the heart’s chambers depolarize and repolarize (McArdle et al., 2010). By analyzing the sinus rhythm, we can determine whether the heart is functioning within healthy parameters or identify the presence of abnormalities. An ECG also provides insight into the mechanisms and factors leading to the presence of abnormal rhythms such as tachycardia, which occurs in patients after catheter ablation of atrial fibrillation (Dipen, 2011). Lastly, an ECG can show us the electrical axis of the heart, which can be used to identify conditions
Some important concerns when placing ECG electrodes on a patient are making sure the patient does not have long thick hair where the electrode needs to go. If there is hair, it needs to be shaved in that area. Also if the patient is oily or wet, they should be cleaned and dried off before electrodes are placed on the body. It is important that the ECG leads are placed correctly because you need to get the correct result from the leads. The consequences of incorrect placements are that you can get the wrong results. By not putting the electrodes in the right place, it can completely throw off the right result which can cause doctors to not worry when they should. The medical assistant can take steps to ensure the ECG reading accurate by going
This project, like many science fair projects, is the product of curiosity. A desire to know more about the supposed link between a prolonged QT interval and Sudden Infant Death Syndrome (Ioakeimidis, 2017) created a study with the intent to improve protocol for QT interval measurements in adult women. This was done by identifying the most accurate lead to use for QT interval measurements. A QT interval, an interval measured from a heartbeat displayed on a test known as an electrocardiogram (EKG), can be a predictor of fatal arrhythmias when prolonged. An electrocardiograph is the graphed results of an electrocardiogram. However, the leads used to record the heartbeat often provide twelve different measurements of the true QT interval. Which
During the test the patient is asked to remain still, shivering could distort the reading therefore you are to be warm while the test is in progress. The patient is able to breathe normally. The test shows a line tracing with spikes and valleys on a piece of paper. Those spikes and valleys are called waves. The creation of the waves are made by the upper chambers and lower chambers. The upper chambers make the first wave referred to as the “P wave” and the lower chambers make the second wave, which is referred to as “QRS complex”. Following this wave is the “T wave”, the final wave. This wave is the electrical recovery or return to the resting state for the ventricles. This test measures how long it takes an electrical wave to pass through the heart. It also tests if the electrical activity is normal, or too slow, or possibly to fast. EKG’s can even help find the cause of certain symptoms of heart disease. Such as shortness of breath, dizziness and palpitations. They also can determine if the walls of the heart are too thick. It can test whether medications are causing side effects to the heart. People with pacemakers get EKGs done to test how well the devices is
Dr. Smith had ordered The ECG due to Mr. Adam complains about chest pain and pain radiating to his left arm and back. The ECG supports Mr. Adam’s diagnosis of MI because according to his ECG result, the ST segment does not look normal and it is raised or elevated. The ST segment is the time between the end of the QRS complex and the start of the T wave which represents the period of zero potential between ventricular depolarization and repolarization. The ST segment is used as baseline reference by both the PQ and TP segments. The PQ and the TP are diastolic potentials.
The heart is one of the most important organs in an organism’s body, no matter if they are aquatic, amphibian, or a mammal. This super organ works automatically, able to pump massive amounts of oxygen rich blood through the body by means of electrical impulses and the opening and closing of valves within its many layers. It is what keeps us and every other creature on this earth alive; so it is only natural for one to fear when there might be a problem with one’s heart. A cardiac arrhythmia can happen to anyone, no matter the age, race, or gender, and as such, doctors and scientist have spent years trying to better understand the heart and the way it functions so that they can try to prevent these problems and save millions of lives.
Arrhythmogenic right ventricular cardiomyopathy (ARVC) (1) is an inherited disease characterized by the progressive replacement of the myocardium by adipose and fibrous tissue (2) that predisposes to the development of ventricular tachycardia (VT) and to sudden cardiac death (SCD). This condition was described three decades ago, when fibro-fatty infiltration in the right ventricle was considered its pivotal indicator (3,4). It later became clear that the ARVC is mainly caused by mutations in the genes encoding for desmosomal proteins (1). This helped unveil that the disorder is often associated with biventricular manifestations (5) and the term "arrhythmogenic cardiomyopathy" has also been proposed (1). The unmet need in the management
The purpose of these lab exercises is to understand the function and importance of an electrocardiogram. This lab will demonstrate how stress levels or different elevations can affect human heart rate. Furthermore, the equipment used in the experiment will show the functions in the right and left arm; as well as, in the right and left ankles. Finally, the lab will serve a purpose as a way to know how to read an electrocardiogram and calculate the heart rate.
VI. Is an effective way to prevent and diagnose heart problems by: determining if the heart is abnormal
Recording an electrocardiogram or ECG, is a procedure which is performed daily all over the United Kingdom by thousands of healthcare workers and in particular nurses (Jacobson, 2000). The way in which this procedure is performed varies from geographical location to location and occasionally even more so, between staff on the same ward (Amos, 2000). This reason stated by Amos (2000), formed the basis of my decision to choose this topic.
Biopotential signals are electrical activities of the human body systems which are measured by potential fluctuations between points in living cells, tissues and organisms .In medicine field, certain biopotential signals are important as they are considering diagnosis and patient monitoring. These signals represent the activity of particular organs such as the heart, brain, muscles and many more. With the help of specialised electrodes, biopotential signals transduce low-noise and artefact-free signals to the organ or the body. A basic biopotential amplifier consists of an instrumentation amplifier. The amplifier should have several characteristics such as high amplification, input impedance and the ability to reject any electrical interference. These characteristics are needed to measure biopotentials signals. Other component can be added to the circuit in order to improve the signals; filter can be added to reduce electric interference, electric isolation and defibrillation shock protection. The electrical activity can originate from different tissues and organs sources. There are different sources of biopotential signals such as EEG, ECG, EMG; they are all based on the same principles however the signals will have smaller amplitudes. Electroencephalogram (EEG) records the electric activity of the