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Reading File
Finding Sources
Finding Sources
Here is a detailed analysis of this ECG:
ECG Analysis - ID 1093
Patient & Technical Details
- Patient: Male, age not specified
- Date/Time: 09-06-2026 at 07:55:15
- Machine: Cardiart 9108 (Glasgow V28.6.7)
- Settings: Speed 25 mm/s, Gain 10 mm/mV, Filter 0.67-45 Hz, AC50
Measured Intervals
| Parameter | Value | Normal Range |
|---|---|---|
| HR | 80 bpm | 60-100 bpm ✓ |
| PR interval | 142 ms | 120-200 ms ✓ |
| QRS duration | 84 ms | <120 ms ✓ |
| QT/QTc (Bazett) | 334/386 ms | QTc <440 ms ✓ |
| P axis | 18° | 0-75° ✓ |
| QRS axis | 66-29° | Normal |
| RVS/SVI | 1.160/0.188 mV |
Machine Diagnosis
- Sinus rhythm
- Inferior T wave abnormality, nonspecific
- Borderline ECG
Interpretation
Rhythm: Normal sinus rhythm at 80 bpm. The PR interval (142 ms) and QRS duration (84 ms) are both normal, indicating normal AV conduction and no bundle branch block.
QTc: 386 ms - within normal limits (no prolongation).
The Key Finding - Nonspecific Inferior T Wave Changes:
The machine flags T wave abnormalities in the inferior leads (II, III, aVF). The term "nonspecific" means the T wave changes do not fit a classic pattern of acute ischemia or infarction. These can be caused by:
- Normal variant - particularly flat/biphasic T waves in lead III
- Early repolarization - common in young males
- Ischemia - subendocardial ischemia or demand ischemia (especially if symptoms present)
- Left ventricular hypertrophy (LVH) strain pattern
- Electrolyte disturbances - hypokalemia, hypomagnesemia
- Medications - digoxin, antiarrhythmics
- Pulmonary disease - cor pulmonale can cause inferior T changes
- Positional/respiratory changes
"Borderline ECG": This machine-assigned label means the tracing is not clearly normal but does not meet criteria for a definitive pathological diagnosis either.
Clinical Implications
This ECG requires clinical correlation. The findings are not acutely alarming in isolation, but:
- If the patient has chest pain, dyspnea, or risk factors for coronary artery disease, serial ECGs and troponin levels are warranted to rule out ACS (acute coronary syndrome).
- If the patient is asymptomatic, this may represent a benign baseline finding, but comparison with previous ECGs is helpful.
- T wave inversion isolated to lead III (without II and aVF) is often a normal variant, especially on deep inspiration.
Disclaimer: This is an educational AI analysis and should not replace clinical judgment. A qualified physician must review and interpret this ECG in the context of the patient's history, symptoms, and examination findings.
Chest pain
Finding Sources
Searching PubMed
chest pain ECG T wave abnormality ACS risk stratification
Finding Sources
Searching PubMed
NSTEMI ACS management guidelines troponin
ECG + Chest Pain = Urgent ACS Workup Required
With chest pain added to this ECG, this patient must be managed as a possible ACS (Acute Coronary Syndrome) until proven otherwise.
Why This ECG Is Now Concerning
The nonspecific inferior T wave changes (leads II, III, aVF) in a patient with chest pain raise the possibility of:
| Diagnosis | ECG Features | Concern Level |
|---|---|---|
| NSTEMI | ST depression or T wave inversion, no STEMI pattern | HIGH |
| Unstable Angina | Normal or nonspecific ECG changes | HIGH |
| Posterior MI | Can look like "normal" or show only subtle anterior changes | Moderate |
| Stable Angina | Symptoms with exertion, ECG may be normal at rest | Moderate |
This ECG does not show ST elevation, so STEMI is not the immediate concern - but NSTEMI and unstable angina cannot be excluded by ECG alone.
Immediate Management Steps
1. Stabilise - Do Now
- IV access, continuous cardiac monitoring, pulse oximetry
- 12-lead ECG - repeat in 15-30 min and at any change in symptoms
- Aspirin 300 mg loading dose (if not contraindicated)
- Oxygen only if SpO2 < 94%
- Sublingual GTN for ongoing pain (if BP allows)
2. Investigations - Order Now
- High-sensitivity Troponin (hs-cTn) - at presentation and repeat at 1 hour or 3 hours (ESC 0h/1h algorithm)
- FBC, U&E, LFTs, lipid profile, glucose, HbA1c
- Chest X-ray
- Echocardiogram if available
3. Risk Stratify
Use a validated score to guide urgency of further care:
HEART Score (each item 0-2):
- History (typical vs atypical)
- ECG (normal=0, nonspecific=1, significant deviation=2) → This ECG scores 1
- Age
- Risk factors (HTN, DM, smoking, obesity, family Hx)
- Troponin result
GRACE Score - for mortality risk in NSTE-ACS (predicts 6-month outcome)
Key Decision Point: Troponin Result
| Troponin Result | Interpretation | Action |
|---|---|---|
| Negative at 0h + 1h | Low probability ACS | Consider discharge with outpatient follow-up |
| Rising or elevated | NSTEMI confirmed | Admit cardiology, anticoagulation, consider angiography |
| High baseline, stable | May be chronic myocardial injury | Clinical context required |
Do Not Miss Differentials
Even if ACS is ruled out, consider:
- Pulmonary embolism (can cause inferior T wave changes, chest pain, dyspnea)
- Aortic dissection (tearing chest pain, BP differential)
- Pericarditis (pleuritic pain, saddle-shaped ST elevation - not seen here)
- Myocarditis
- GERD/MSK (diagnosis of exclusion only)
Bottom line: This patient needs emergency evaluation. Do not discharge without troponin results and clinical assessment by a physician. The ECG alone cannot rule out NSTEMI.
Disclaimer: This is educational AI analysis. All clinical decisions must be made by a qualified clinician based on full patient assessment.
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