Understanding This ECG

This is a standard 12-lead ECG (electrocardiogram) printout from a BPL Cardiart machine, done at Meghana Nursing & Maternity Home on 22-08-2026 at 09:42, Patient ID 29943.

Recording parameters (shown on the strip):

Paper speed: 25 mm/s, Calibration: 10 mm/mV
Filter: 0.5-45 Hz, AC filter 50 Hz (standard settings)
Heart rate: 72 bpm (printed on strip)

What an ECG shows

An ECG records the heart's electrical activity through 12 different "views" (leads):

Limb leads (I, II, III) and augmented leads (aVR, aVL, aVF) - look at the heart from the front/frontal plane, used to judge heart rate, rhythm, and electrical axis.
Precordial/chest leads (V1-V6) - placed across the chest, used to assess the heart from front-to-back, useful for detecting issues in specific walls of the heart (anterior, lateral, septal).

Each heartbeat produces a characteristic wave pattern:

P wave - atrial contraction (upper chambers depolarizing)
PR interval - time from atrial to ventricular activation (normally 0.12-0.20 s)
QRS complex - ventricular contraction (should be narrow, <0.12 s, in a normal heart)
ST segment and T wave - ventricular recovery (repolarization); this is where injury/ischemia patterns (elevation or depression) show up
QT interval - total time for ventricular depolarization + repolarization

What I can see on your strip

Working from the visible tracing (note: the photo is rotated and partly obscured by other papers, and some fine detail/glare limits precision):

Rate: ~72 bpm, which is within the normal range (60-100 bpm)
Rhythm: Appears regular, with a P wave visible before each QRS complex in lead II - consistent with normal sinus rhythm
QRS complexes: Look narrow throughout, no obvious widening
Axis: Lead I and II show upright (positive) complexes, aVR shows a negative complex - this pattern is consistent with a normal QRS axis
Precordial leads (V1-V6): Show the expected progression - small R wave in V1 growing progressively taller through V4-V6 with an upright T wave, which is the normal "R-wave progression" pattern
No obviously large ST-segment elevation/depression or pathological Q waves jump out in this image, but a photo of a paper strip (especially rotated/glare-affected) is not reliable enough to rule out subtle abnormalities

Important caveat

I can describe the general pattern, but a photograph like this is not a substitute for a cardiologist or treating physician actually reviewing the original strip - subtle ST-T changes, small Q waves, or interval abnormalities (like QT prolongation) can easily be missed or misjudged from an image with glare and rotation. If this ECG was done for symptoms (chest pain, palpitations, breathlessness) or as part of a workup, please have the ordering doctor or a cardiologist formally interpret it alongside your clinical history.

If you want, tell me why the ECG was done (routine checkup, symptoms, pre-op, follow-up) and I can help you understand what specific things the doctor would be looking for in this recording.

Interprit this ecg

Reading File

ECG Interpretation

Technical quality note first: This is a photo of a printed paper strip that is rotated and partly hidden behind other documents, with some glare. That limits precise measurement of intervals (PR, QT) and fine ST-segment changes. Interpretation below is based on what's visible; it should be confirmed by whoever ordered the test.

Systematic reading

Parameter	Finding
Rate	72 bpm (machine-calculated, matches visually regular R-R intervals)
Rhythm	Regular; a P wave precedes every QRS in lead II → normal sinus rhythm
Axis	Lead I and lead II both upright/positive, aVR predominantly negative → normal axis (roughly 0° to +90°)
P wave	Normal size and shape in lead II, no evidence of atrial enlargement
PR interval	Appears within normal range (~0.16-0.20 s), no visible pre-excitation or prolonged conduction
QRS width	Narrow throughout (~2-3 small squares, <0.12 s) → no bundle branch block pattern
QRS morphology (precordial leads)	V1: small r, deep S (rS) → V4-V6: progressively taller R wave with shrinking S → normal R-wave progression, transition around V3-V4
ST segments	No obvious elevation or depression seen in the visible leads
T waves	Upright and concordant with QRS in I, II, V4-V6; no obvious inversion
Q waves	No pathological/deep Q waves identified

Overall impression

This tracing looks like a essentially normal 12-lead ECG: normal sinus rhythm at 72 bpm, normal axis, narrow QRS, normal R-wave progression across the precordium, and no obvious acute ischemic changes (no ST elevation/depression or pathologic Q waves visible).

Important caveats

No patient age, sex, or clinical indication is filled in on the form, so this reading can't be risk-stratified against a clinical context (e.g., chest pain, palpitations, pre-op screening).
Subtle findings (small Q waves, minor ST-T changes, borderline QT prolongation, early repolarization vs. injury pattern) are easy to miss on a rotated, glare-affected photograph and need the original paper strip for certainty.
This is a screening-level read, not a formal diagnostic report. If this ECG was done because of symptoms or a cardiac risk factor, it should be reviewed by the ordering physician or a cardiologist against the actual strip and the patient's history.

If you can share why the ECG was done (routine check, symptoms, follow-up of a known condition) I can tell you specifically what would be reassuring or concerning to look for in a tracing like this.

This is a shared conversation. Sign in to Orris to start your own chat.