1. What colour is used for the patient’s LA limb lead?
2. How many physical lead wires are required to
produce 3 ECG views, lead I, lead II and lead III?
3. The lead III electrical view of the heart amplifies
the signal between which limb leads?
4. Name the 3 augmented views.
5. Where is the virtual lead located for the a VR view?
6. How many different ECG waveform views of the
patient’s heart are available via the 3 limb leads?
7. In a standard 12-lead ECG, how many ECG
waveform views of the heart are available?
8. In a standard 12-lead ECG view, how many
physical lead wires are required?
9. What is the definition of an arrhythmia?
10. What is the definition of an atrial fibrillation?
11. Is ventricular fibrillation a dangerous situation and
why?
12. How does a biomed deal with users complaining
about an erratic ECG waveform(s)?
13. Outline proper skin-prep.
14. ECG rate is commonly calculated by measuring
what?
15. When is diagnostic mode used?
16. What is the purpose of trending?
17. If the user placed the RA patient lead on the LA
electrode and the LA patient lead on the RA
electrode, what would be the symptom?
18. Outline the specific tests a biomed performs on the
ECG parameter during a PM.
Expert Solution Preview
Introduction: As a medical professor, it is important to have a comprehensive understanding of different medical procedures and tests such as the ECG. In this response, we will provide answers to various questions related to ECGs and their usage in medical practice.
1. The colour used for the patient’s LA limb lead is white.
2. Three physical lead wires are required to produce three ECG views, lead I, lead II, and lead III.
3. The lead III electrical view of the heart amplifies the signal between the left arm (LA) and the left leg (LL) limb leads.
4. The three augmented views are aVR, aVL, and aVF.
5. The virtual lead for the aVR view is located at the centre of the chest.
6. Three different ECG waveform views of the patient’s heart are available via the three limb leads.
7. In a standard 12-lead ECG, twelve ECG waveform views of the heart are available.
8. A standard 12-lead ECG view requires ten physical lead wires.
9. An arrhythmia is an irregular heartbeat that can have various causes.
10. Atrial fibrillation is a type of arrhythmia characterized by irregular and fast heartbeats.
11. Ventricular fibrillation is a dangerous situation where the heart’s ventricles quiver rather than beat normally, which can lead to cardiac arrest.
12. A biomedical technician can deal with users complaining about an erratic ECG waveform by troubleshooting and identifying the root cause of the problem.
13. Proper skin-prep for an ECG involves cleaning and rubbing the patient’s skin with an alcohol pad to remove any surface oils or dirt that could interfere with the ECG readings.
14. ECG rate is commonly calculated by measuring the distance between two specific ECG waveforms (usually the R waves) and dividing this by a specific time interval.
15. Diagnostic mode is used when more complex ECG measurements are needed.
16. The purpose of trending in medical practice is to detect changes in patient condition or health status over time.
17. If the user placed the RA patient lead on the LA electrode and the LA patient lead on the RA electrode, the ECG signal would be inverted, leading to inaccurate readings.
18. Specific tests a biomedical technician performs on the ECG parameter during a PM (preventative maintenance) include calibration, checking for proper grounding, and inspecting for any physical damage or wear.
