0.04 - 0.12 sec (one small box - 3 small boxes)
440ms
QRS-- A pattern seen in an electrocardiogram that indicates the pulses in a heart beat and their duration. Variations from a normal QRS pattern indicate heart disease.
QRS complex
The P wave represents atrial depolarization (they contract). In a normal EKG, the P-wave precedes the QRS complex. It looks like a small bump upwards from the baseline.
QRS
Nothing, they are equivalent.
Okay so an EKG show the electrical impulse that travels through the heart. What I mean is EKG don't show contraction. However the QRS complex represent ventricular depolarization, which signals ventricular contraction
does a normal qrs complex measures <.12
vi
what does isoelectric line represent
A low voltage EKG means the amplitude of the QRS waves on the EKG are lower than would be expected. COPD, obesity, and pericardial effusions can cause low EKG voltages, amongst other causes.
An abnormal ECG is when the electrocardiogram shows results outside the norm. These results are usually indicative of problems in the heart, such as enlargement, higher potassium or sodium levels, damage, and inflammation.
by largest, I'll assume tallest. the tallest wave on an EKG is called the QRS complex and represents the contraction of the left ventricle. btw tallest could also mean lowest depending on the particular ekg lead.