Reaction Paper On ECG Waveform

Resting heart contractions were recorded for thirty seconds until the heart rate was less than 60 beats per minute. A stimulator electrode to be used was set to the following states: Amplitude of 4.00 Volts, a stimulus delay of 50ms, stimulus duration of 10ms, a frequency of 1.0Hz, and a pulse number of 30. The electrode was then placed in direct contact with the heart for 30 seconds at which time the data was observed and recorded.

At the latter end of the p-q interval, atrial contraction occurs forcing additional blood into the ventricles. At the beginning of the QRS interval on an ECG reading, the mitral valve closes and the ventricles are at EDV (135ml). During the QRS interval, ventricular contraction occurs increasing the pressure in the ventricle and the aorta. When the pressure continues in the ventricle exceeds the pressure in the arteries, the aortic valve opens and blood is ejected. The increased pressure continues through the t peak. The ventricles are now in ESV (65ml) and the aortic valve is closed. Now the ventricles are relaxed causing pressure to fall and the cardiac cycle starts over again. This ECG reading was from a normal tracing. Keep in mind that an ECV is easy to obtain, but there are some subtleties that are very complex.

Today in physical education one main goal is fitness and well being. There are many ways that physical education teachers achieve their goal of increasing their students’ fitness level. One way teacher help student increase their fitness level is by heart rate monitors. When using a heart rate monitor it can help show students what it really means to be physically active and what it does to their body. Heart rate monitors are used to calculate the individuals’ heart rate per minute very quickly.

Cardioversion. During this procedure medicines or an electrical shock are given to make the heart beat normally.

Cardiac dysrhythmias come in different degrees of severity. There are heart conditions that you are able to live with and manage on a daily basis and those that require immediate attention. Atrial Fibrillation is one of the more frequently seen types of dysrhythmias (NIH, 2011). The best way to diagnosis a heart condition is by reading a cardiac strip (Ignatavicius &Workman, 2013). Cardiac strips play an chief part in the nursing world allowing the nurse and other trained medical professionals to interpret what the heart is doing. In a normal strip, one can clearly identify a P wave before every QRS complex, which is then followed by a T wave; in Atrial Fibrillation, the Sinoatrial node fires irregularly causing there to be no clear P

5. Which wave in an electrocardiogram represents repolarization of the ventricles? (Points : 1)       R wave

.1 Explain the ECG complex waveform pattern (PQRST) The ECG waveform allows us to monitor the electrical activity of the heart and how the mechanical side of it is functioning. At the beginning of the ECG wave form is the P complex which is when the depolarisation of the atrial cells and when the SA (Sino atrial) node induces an electric wave that travels throughout the heart to cause the muscle cells to contract. After the P wave there is the PR interval, it is a flat line as the ventricles in the heart are filling up with blood which roughly takes 0.2 seconds.

These waves have some impact on the nervous system by using biofeedbacks to adjust vital signs.

With this new invention a systematic way of interpreting an Electrocardiograph soon developed. The layout of the graph is as such: there are 4 columns which correspond to the leads; the first column – I, II, and III; the second column: aVR, AVL, aVF; the third V1-3; and the fourth V4-6. Each column is recorded simulation however they are not always displayed on the strip except for the last rhythm strip which occurs at the bottom of the tracing (lead II and V1).

The QRS complex it represents the ventricular depolarization. It can be compromises of any combination of one, two, or three wave forms. It indicates ventricular depolarization, or contraction of the ventricles. It normally not longer than .10 seconds in duration. The amplitude is not less than 5 mm in

An EKG would be the first test completed on Mrs. Lee; evaluating her cardiac rhythm and rate. The symptoms described by Mrs. Lee suggests atrial fibrillation. To determine atrial fibrillation via EKG we would be looking for an irregular rhythm, a very fast rate, absent p-waves, an absent PR interval and an either normal or widened QRS (Heart and Stroke, 2017).

The atrial contraction is represented by the P wave. This is an upward, or positive wave of the line on the graph. The ventricular contraction is displayed by the QRS complex. The QRS

Regular electrical impulses are sent within the conduction system of the heart prompting contraction (Marieb, 2015). These electrical signals can be identified and documented by the use of an electrocardiography (ECG) machine. In a familiar ECG recording, three waves will occur; The P wave, QRS complex and

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.

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.