Question

Each little box on the ECG paper horizontally represents:

A. 0.04 second.
B. 0.20 second.
C. 1 mV.
D. 1 second.

Answer 1

Each small box on the ECG paper horizontally represents 0.04 second, which is essential for interpreting the electrocardiogram accurately.

Step-by-step explanation:

Each little box on the ECG paper horizontally represents A. 0.04 second. The ECG paper is divided into a grid where each small square represents 0.04 seconds, and each larger square, composed of 5x5 small squares, represents 0.20 seconds. These measurements are crucial for accurately interpreting the heart rate and rhythm as indicated by the electrocardiogram.

In regards to the electrocardiogram (ECG) monitors, they must have an RC (resistance-capacitance) time constant less than 1.00 × 10² us to properly measure voltage variations over small time intervals. With a resistance (R) given as 1.00 kΩ (kiloohms), calculations can be made to find the maximum capacitance (C) that will not exceed this RC time constant.