Yeah, the patient is a middle-aged African male. His BP is very low. Can you just read the ECG and comment on it?
Here is my ECG interpretation for this patient:
ECG Report - GE MAC2000 | 01.06.2026 | 100 bpm
Machine Measurements
- Rate: 100 bpm
- QRS duration: 70 ms (normal)
- QT / QTc (Bazett): 320 / 412 ms (borderline-normal)
- QRS axis: -42° (left axis deviation)
- T axis: -56°
- RR / PP: 598 / 600 ms
My Interpretation
1. Rhythm - Normal Sinus Rhythm at 100 bpm
The rate is at the upper limit of normal (sinus tachycardia threshold is >100). In a hypotensive patient, this is a compensatory response and should be taken seriously.
2. Left Axis Deviation (LAD) - QRS axis -42°
This is consistent with Left Anterior Fascicular Block (LAFB). In the context of an inferior MI, LAD can also reflect reciprocal changes or conduction disease involving the left anterior fascicle.
3. Inferior Infarct - Age Undetermined
Looking at leads II, III, and aVF:
- There are Q waves visible in the inferior leads (II, III, aVF), which the machine flags as inferior infarct of undetermined age.
- The ST segments in inferior leads do not appear to show acute elevation on this trace, suggesting this may be an old/prior inferior MI rather than an acute STEMI.
- However, given the clinical picture (hypotension), acute right ventricular (RV) infarction must be actively excluded - RV infarction commonly accompanies inferior MI and is a major cause of hypotension with a low/normal BP.
4. Precordial Leads (V1-V6)
- V4-V6 show tall, somewhat prominent complexes - worth noting for lateral wall involvement.
- V1-V2 morphology: look carefully for R-wave progression and any posterior MI pattern (dominant R in V1-V2 with ST depression suggesting posterior involvement, which often accompanies inferior MI).
- No obvious anterior ST elevation.
5. aVL
- Typically shows reciprocal changes in inferior MI (ST depression / Q wave in aVL). This appears consistent here.
Clinical Correlation - URGENT
Given hypotension + inferior infarct pattern + sinus tachycardia, the following must be excluded immediately:
| Concern | Action |
|---|---|
| Right Ventricular Infarction | Obtain right-sided ECG (V3R-V4R) - ST elevation in V4R is diagnostic. Do NOT give nitrates - they will cause catastrophic BP drop |
| Posterior MI | Check V7-V9 or look for dominant R + ST depression in V1-V2 |
| Cardiogenic shock | Assess JVP, lung fields, urine output |
| Inferior STEMI | Repeat ECG in 15-30 min if clinically worsening |
Key point for RV infarction (common pitfall): The classic triad is hypotension + clear lung fields + elevated JVP (Kussmaul's sign). Treatment is aggressive IV fluid loading (NOT diuretics), and nitrates/morphine are contraindicated.
Summary
Abnormal ECG. Sinus tachycardia at 100 bpm. Left axis deviation (-42°, consistent with LAFB). Inferior infarct pattern of undetermined age (Q waves in II/III/aVF) - cannot exclude acute inferior/RV MI in this hypotensive patient. Urgent right-sided leads and clinical reassessment required.
This patient needs immediate attention. Do not wait for troponin results before acting clinically.
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