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What is a fourth degree heart block?
artifact in ECG
Wax coated graph sheets are used for ecg recording why?
A
What is the Einthoven triangle?
The Einthoven triangle is an equilateral triangle with the heart at its centre and the limbs (left arm, right arm and legs) at the apices. This triangle forms the basis for the theory behind how the ECG functions.
What is the small squares on an ECG strip equal to?
One small box is 0.04 seconds. To get a heart rate, usually expressed as "per minute", divide 300 by the number of LARGE boxes between QRS wave peaks. A large box is 0.2 seconds. (Math: one minute = 60 seconds. One second = 5 x 0.2 seconds per large box, thus 60s x 5 boxes per second = 300 LARGE boxes per minute) which also happens to be the upper limit of normal for the PR interval used in determining the presence of primary AV block. One can also memorize the rate for the number of large boxes, rather than doing the math: 1 = 300; 2 = 150; 3 = 100; 4 = 75; 5 = 60. If you have more boxes than that, or less, you'd better page me rather than worrying about math!
How does the physican use ECG paper to interpret the tracing?
Physicians use ECG paper to interpret cardiac tracings by analyzing the time and voltage measurements represented on the grid. The horizontal axis measures time, with each small square representing 0.04 seconds and each large square representing 0.2 seconds. The vertical axis represents voltage, with each small square typically indicating 0.1 mV. By measuring intervals, waveforms, and overall rhythm, physicians can assess heart rate, rhythm abnormalities, and other cardiac conditions.
What unit do you measure the amplitude of an ECG wave?
The amplitude of an ECG wave is typically measured in millimeters (mm) on the vertical axis of the ECG graph. It represents the voltage or electrical activity of the heart muscle during each phase of the cardiac cycle.
What is the abbreviation for ecg lead v?
vertical
What is a millivolt measurement on ECG paper?
A millivolt measurement on ECG paper indicates the amplitude of electrical signals produced by the heart, with one millivolt typically represented by a specific height on the graph. Standard ECG paper has a calibration where 1 millivolt corresponds to a vertical deflection of 10 small squares, or 1 large square, on the ECG tracing. This measurement helps in assessing the heart's electrical activity and identifying abnormalities. Proper interpretation of these millivolt values is crucial for diagnosing various cardiac conditions.
What is the difference between an MRI and a EEG?
Both measure electrical activity -- the ECG in the heart and the EEG in the brain.An EEG is an electroencephalogram and an ECG also known as an EKG is an electrocardiogram. An EEG records brainwave/electrical activity. An ECG records the electrical activity that the heart produces.
When the ecg is running at normal speed the paper is moving at the rate of?
When the ECG is running at normal speed, the paper is moving at 25 mm/sec.
What is the name of the instrument that measures heartbeat?
An ECG (Electrocardiography) machine.
What part of an ECG machine moves against the tracing paper to record the waves of the ECG cycle?
The part of an ECG machine that moves against the tracing paper to record the waves of the ECG cycle is called the stylus. The stylus heats up and creates an ink mark on the moving paper as it records the electrical activity of the heart, producing the characteristic waveform of the ECG. The paper moves at a constant speed, allowing for a continuous representation of the heart's electrical activity over time.
Which of the following procedures is abbreviated as either ECG or EKG?
An abbreviation for ElectroCardiogram: A procedure in which electrodes placed on the chest wall pick up the electrical conduction/activity of the heart. The depolarization and repolarization of the cardiac miocytes are are transcribed on a sheet of paper with the amplitude (+ or -) on the X axis, and time on the Y axis.
Is pen like instrument that records movement on ECG paper is called a stylus?
Yes, the pen-like instrument that records movement on ECG paper is called a stylus. It translates the electrical signals from the heart into a graphical representation, creating the ECG trace. The stylus moves in response to the electrical activity, marking the paper with the heart's rhythm and patterns.
What is the vertical line on an ECG that indicates the pacemaker has discharged?
Pacer Spike otherwise known as (Pacemaker Spike)
What produces a printed representation on ECG paper?
An electrocardiograph (ECG) machine produces a printed representation on ECG paper by detecting and recording the electrical signals produced by the heart. The machine amplifies these signals and converts them into a visual display on the paper, showing the heart's electrical activity as a series of waves and spikes.
