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Which of the following correctly describes the grid paper used for an ECG?
It consists of horizontal lines
It contains vertical lines
It is heat sensitive
It is used for cardiac monitoring and ECGs
The correct answer is: It is used for cardiac monitoring and ECGs
Grid paper for an ECG is specifically designed to facilitate the accurate recording and interpretation of electrical activity from the heart. It is characterized by a grid pattern of both horizontal and vertical lines, which helps to create reference points that enhance the clarity of the displayed waveform. This structure allows healthcare professionals to measure the duration and amplitude of various segments of the ECG accurately. The primary purpose of grid paper is not only to provide a visual framework for recording the ECG but also for subsequent analysis, as it aids in identifying arrhythmias or other cardiac abnormalities. Therefore, its use in cardiac monitoring and obtaining ECGs is appropriate and correct. While grid paper does feature horizontal and vertical lines, as well as being used in general ECG creation, it is the specific association with cardiac monitoring that aptly summarizes its primary function and relevance in the clinical context.