ECG Analysis - Mr. Ronak Kala, 33 Years, Male

Patient & Technical Details

Machine-Reported Measurements

Systematic Analysis

1. Rate & Rhythm

• Heart rate: 69 bpm - normal sinus rate
• Rhythm: Regular - consistent RR intervals throughout all leads
• P waves present in all leads, upright in I, II, aVF - confirming normal sinus rhythm

2. P Waves

• P wave axis 46° - normal
• P wave morphology appears normal in limb leads
• PR interval 144 ms - normal (no AV block, no pre-excitation)
• No bifid or biphasic P waves to suggest left atrial enlargement

3. QRS Complex

• Duration 86 ms - narrow, rules out bundle branch block
• QRS axis approximately +15° - normal axis
• No pathological Q waves visible in the available leads
• Normal R-wave progression in precordial leads (V1-V6): small r in V1, progressively increasing through V4-V6 - no evidence of prior anterior MI

4. ST Segments

• Looking carefully at the precordial leads:
  • V1-V3: There appears to be subtle ST changes; the transition zone looks normal
  • V4-V5: Some ST morphology changes visible
  • Leads I, aVL: Appear relatively flat/isoelectric ST segments
  • Inferior leads (II, III, aVF): ST segments appear isoelectric
• No definitive pathological ST elevation in any lead
• No acute STEMI pattern identified

5. T Waves

• T waves are upright in I, II, V4-V6 - normal
• T wave axis: 6° (reported by machine) - somewhat narrow T-QRS axis separation (QRS axis ~15°, T axis ~6°) - this is minor and not significantly abnormal
• T wave inversion in aVR - normal finding
• The precordial T waves appear to have normal polarity with standard R-wave progression

6. QT/QTc Interval

• QT 386 ms, QTc 407 ms - normal for a male (borderline upper end of normal; alert if >440 ms in males)
• No evidence of QT prolongation

7. Voltage / Hypertrophy

• The image shows predominantly tall QRS complexes in the precordial leads, particularly V4-V5-V6
• No clear voltage criteria for LVH can be confirmed from this view alone (Sokolow-Lyon: S in V1 + R in V5 or V6 > 35 mm; Cornell: R in aVL + S in V3 > 28 mm in men) - would need precise measurements
• No right ventricular hypertrophy pattern

8. U Waves

• No prominent U waves visible - no hypokalemia pattern

Impression

1. Normal sinus rhythm at 69 bpm - no arrhythmia
2. Normal intervals - PR (144 ms), QRS (86 ms), QTc (407 ms) - all within normal range
3. Normal axis - no axis deviation
4. No evidence of acute ischemia (no ST elevation, no ST depression, no dynamic T-wave inversion suggesting NSTEMI/Wellens)
5. No bundle branch block
6. No pathological Q waves to suggest prior myocardial infarction
7. Early repolarization pattern cannot be excluded in a young male (common finding in ~90% of young males per Rosen's Emergency Medicine) - would need clinical correlation
8. QTc 407 ms - normal, but worth monitoring if patient is on QT-prolonging medications (antipsychotics, antibiotics, etc.)

Clinical Recommendations

Disclaimer: This analysis is provided for educational and informational purposes. It must be reviewed and confirmed by a qualified cardiologist or physician in the clinical context of this patient. ECG interpretation should always be integrated with clinical history, symptoms, physical examination, and other investigations.

Sources: Harrison's Principles of Internal Medicine 22E (2025); Rosen's Emergency Medicine; Braunwald's Heart Disease