NEETZoologyBody Fluids and Circulation
To obtain a standard electrocardiogram (ECG) for continuously monitoring basic heart activity, a patient is connected to the machine with three electrical leads. What is the correct anatomical placement of these three leads?
Options
- AOne to each wrist and one to the left ankle
- BOne to each ankle and one to the left wrist
- COne to the right wrist and one to the left ankle
- DMultiple leads attached only to the chest region
Correct answer
A. One to each wrist and one to the left ankle
Step-by-step solution
To obtain a standard ECG, a patient is connected to the machine with three electrical leads: one to each wrist and one to the left ankle. This configuration continuously monitors the basic heart activity. For a more detailed evaluation of the heart's function, multiple leads are attached to the chest region, but the standard baseline setup requires only the three specific limb leads. Swapping the placement (e.g., each ankle and left wrist) or missing a lead is incorrect. Answer: One to each wrist and one to the lef