When most people think of heart tests, they think of the ECG. ECG stands for electrocardiogram. It's also called an EKG, from the German elektrokardiogram. Although it may look like an ECG is recording heartbeats, it's not. In fact, it records the electrical activity (the electrical triggers, if you will) that presage the actual heartbeat. The mechanical beats follow the electrical triggers by about a tenth of a second -- unless, of course, there's a problem. Or to state it in "medicalese," electrical systole and diastole precede mechanical systole and diastole (contraction and relaxation) of the heart by about a tenth of a second.
The ECG is an important tool for your doctor, but is hardly complete and comes with several limitations.
It's a static test, which means it doesn't necessarily identify problems that appear only when the patient's heart is under stress. An example would be a patient complaining of intermittent chest pain. This might actually be an indicator of a severe underlying problem, and yet a standard ECG could easily read as perfectly normal.
ECG readings indicate only general problems. In most cases, abnormalities in the reading are non-specific as to cause, and in fact, many times, may mean nothing all.
- A normal ECG reading doesn't necessarily mean that there is no problem.
- An abnormal reading doesn't necessarily mean that there is.
- It's merely a piece of the puzzle that can help point the doctor in a direction.
Electrocardiogram (ECG) is used to identify any irregular heart rhythms. It does this by detecting the electrical activity of the heart as line tracings on paper, for easier analysis (Price, 2012). As Stanfield (2014) reports the cardiac muscle contracts in response to electrical depolarisation of the muscle cells. This electrical activity, when amplified and recorded, is known as an ECG. According to Maron et al, (2014) an ECG test can help detect the cause of symptoms such as chest pains or…
CVC General Consideration
To give medications to the patient e.g. vasopressors, chemotherapy, antibiotics1
Parentral nutrition (PEN)
Hemodynamic monitoring – e.g. central venous pressure (CVP)
In case of difficult or poor peripheral venous access
CONTRAINDICATION: some of the relative contraindications are
Anatomic distortion at insertion site
Already existing intravascular devices
Internal juglar vein (IJV)
Suvclavian vein ( SCV)
Dear Heart, I’ve began my journey to become a Medical Assistant, and today I started out with the Electrocardiography class. For years I knew you were important to me, but in only one class period I learned so many new things about you that in nineteen years I had no clue about! Today’s lesson taught me a few of the things you do in there for me, about how you pump blood for me, panic, and relax for me. Therefore, I plan to care for you for many years to come, by mostly taking things steady,…
This includes, Human Samples, Animals, Electrocardiography, Statistics, Western Blotting, and Immunofluorescence. These were all very well developed and analyzed with thoroughness throughout the entire paper. Dr. Fraidenraich and his colleagues wanted to assess the changes in expression and localization of Cx43 in the hearts of several DMD models. To do this, they conducted immunofluorescence (IF) staining on WT, mdx, and mdx:utr mice at 2, 4, 8, and 12 months of age. mdx:utr mice were analyzed…
The electrocardiography allows an administer to record the cardiac conduction cycle via graph. The graph is composed of three labels referred to as waves that identify conduction. The labels are P wave, QRS complex, and T wave. The P wave indicates the atrial depolarization. The time span of the P wave is about 0.08 seconds and is caused by depolarization wave actions from the SA node to the atria. Shortly after the P wave starts, the atria recoils. The QRS complex is a sign of ventricle…
Intraoperative monitoring: A consensus on standard monitoring requirements has not yet established in the literature. Routine monitoring includes electrocardiography, pulse oximetry, capnography, temperature and urine output monitoring. There are many authors who recommend invasive blood pressure monitoring by indwelling arterial catheter in all patients, irrespective of their age 18.Abrupt changes in cerebral blood flow due to changes in intracranial pressure (ICP) is possible during the…
death, and myocardial infarction (MI). Secondary endpoints consisted of major adverse cardiovascular events (described as a composite of death, MI, and stroke), technical achievement, access site failure, procedural and fluoroscopy times, and amount of contrast, critical care unit stay, and all-cause mortality at six months. Between October 2009 and February 2012, 707 patients with an STEMI were randomly allocated to PCI by way of radial (n = 348) or femoral (n = 359) approach within 12 hour…
pick out heart problems early enough in the policy application process.
Unlike most medical fields, EKG technicians are not required to have a degree before they can practice. A relevant certificate from medical training schools or a community college is usually enough. Often, the certificate courses will last for at least one year. On completing the course, the technician must have attained the requisite skills to perform an electrocardiogram from end to end.
If you are looking for a…
The aim of this project is to develop an Electrocardiography (ECG) amplifier circuit from scratch. The main challenges include amplifying the desired week signal in the presence of noise from other muscles and electrical sources. As this semester was about transistors we had to use transistors at some stage in this project. The project was successfully designed and built in two ways: one with solely using operational amplifiers and other using transistors as differential amplifiers.…