EKG AcquisitionCâu 42 / 100
Where should the limb electrodes be placed for a standard 12-lead EKG?
a.On the bony prominences of the wrists and ankles for the best signal
b.On fleshy, non-muscular areas of the arms and lower legs, positioned symmetrically
c.On the upper chest and abdomen for all four limb leads
d.Anywhere convenient, since limb lead position does not affect the tracing
Giải thích
Limb electrodes belong on flat, fleshy areas of the arms and lower legs, placed symmetrically on the right and left, because bone conducts poorly and muscle bellies generate tremor artifact. Torso placement is acceptable only for continuous monitoring or when a limb is missing, and it must be documented because it alters the tracing. Limb position does affect amplitude and axis, so it is never arbitrary.
Luyện miễn phí toàn bộ 100 câu hỏi — không cần đăng ký.
Câu hỏi liên quan cùng chủ đề
- After placing V1, V2, and V4, where should the technician place V3?
- A technician is placing V5 on a 12-lead EKG. Which description is correct?
- Where is the V6 electrode placed?
- A 12-lead tracing shows an inverted P wave, inverted QRS, and inverted T wave in lead I, while the chest leads look normal. What is the most likely cause?
- A tracing shows a uniform, thick, fuzzy baseline with small spikes occurring exactly 60 times per second across all leads. What is the most likely cause?
- An anxious, cold patient produces a tracing with irregular jagged spikes that obscure the small waveforms. What artifact is this and what is the best first correction?
Cập nhật gần nhất: · quy trình kiểm tra
Đội Ngũ Biên Tập PrepPass · Đối chiếu với NHA Certified EKG Technician (CET) Exam · Quy trình kiểm tra