Top 10 heart disease and ecg report and ecg images

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ECG electrocardiogram heart disease patterns

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STEMI ST elevation myocardial infarction ECG

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atrial fibrillation ECG rhythm strip

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heart block bundle branch block ECG

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ventricular tachycardia ventricular fibrillation ECG

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heart failure hypertensive heart disease ECG changes

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pulmonary embolism right heart strain ECG

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Wolff-Parkinson-White WPW syndrome delta wave ECG

Here is a comprehensive clinical report on the Top 10 Heart Diseases with ECG Findings and Images.

Top 10 Heart Diseases: ECG Report with Images

1. 🫀 ST-Elevation Myocardial Infarction (STEMI)

Overview: Acute occlusion of a coronary artery causing transmural myocardial injury. The LAD artery territory (anterior STEMI) is the most common and most lethal.

ECG Findings:

Feature	Description
ST Elevation	≥1 mm in ≥2 contiguous limb leads; ≥2 mm in ≥2 contiguous precordial leads
Morphology	Convex (tombstone) or concave ST elevation
Reciprocal changes	ST depression in opposite leads
Hyperacute T waves	Tall, peaked T waves (early phase)
Pathological Q waves	Develop within hours–days (necrosis marker)
Location	Anterior (V1–V4): LAD; Inferior (II, III, aVF): RCA; Lateral (I, aVL, V5–V6): LCx

Anterior STEMI ECG:

Anterior STEMI – tombstone ST elevation in V2–V5 with hyperacute T waves

Anterolateral STEMI with reciprocal inferior depression

2. 💔 Non-STEMI / Unstable Angina (ACS without ST Elevation)

Overview: Partial coronary occlusion or severe stenosis causing subendocardial ischemia. Includes Wellens' syndrome — a pre-infarction pattern warning of critical LAD stenosis.

ECG Findings:

Feature	Description
ST Depression	Horizontal or downsloping ≥0.5 mm in ≥2 leads
T-wave inversion	Symmetrical, deep inversions (lateral leads common)
Wellens' Type A	Biphasic T-waves in V2–V3
Wellens' Type B	Deep, symmetrical T-wave inversions in V2–V4
No Q waves	(differentiates from completed infarct)

Wellens' Syndrome ECG (critical LAD stenosis):

Wellens' syndrome – biphasic T-waves in V2–V3 and deep T-wave inversions V4–V5 indicating critical LAD stenosis

3. ❤️‍🔥 Atrial Fibrillation (AF)

Overview: The most common sustained cardiac arrhythmia worldwide. Disorganized atrial electrical activity with irregular ventricular response. Major risk factor for stroke.

ECG Findings:

Feature	Description
Rhythm	Irregularly irregular — hallmark finding
P waves	Absent; replaced by fibrillatory (f) waves
f waves	Fine, rapid oscillations (best seen in V1, II)
QRS	Narrow unless aberrant conduction or BBB
Rate	Variable; can be bradycardic, normal, or rapid

Classic Atrial Fibrillation ECG:

Atrial fibrillation – classic irregularly irregular rhythm with absent P waves, fibrillatory f-waves visible in V1 and lead II

AF with complete AV block (regular rhythm paradox):

Atrial fibrillation with complete AV block – regular R-R intervals despite underlying atrial chaos indicating AV dissociation

4. ⚡ Ventricular Tachycardia (VT) / Torsades de Pointes

Overview: Life-threatening arrhythmia originating in the ventricles. Torsades de Pointes is a polymorphic VT associated with prolonged QT interval.

ECG Findings:

Feature	Description
Rate	>100 bpm (usually 140–200 bpm)
QRS	Wide (>120 ms), monomorphic or polymorphic
AV dissociation	P waves independent of QRS (if visible)
Fusion beats	Pathognomonic when present
Torsades	QRS amplitude "twists" around isoelectric baseline
Trigger	Preceded by short-long-short RR sequence in TdP

Torsades de Pointes ECG:

Torsades de Pointes – polymorphic wide-complex tachycardia with QRS complexes twisting around the isoelectric baseline, classic short-long-short RR trigger

5. 🧱 Left Bundle Branch Block (LBBB)

Overview: Conduction delay through the left bundle branch; always indicates significant cardiac disease. New LBBB + chest pain = STEMI equivalent (Sgarbossa criteria apply).

ECG Findings:

Feature	Description
QRS Duration	≥120 ms
Leads V1–V3	Deep QS or rS complexes
Leads I, aVL, V5–V6	Broad, notched R waves (no septal Q waves)
ST/T changes	Discordant (opposite to QRS direction)
Axis	Left axis deviation common

Left Bundle Branch Block ECG:

Left bundle branch block – broad notched R-waves in lateral leads, deep S-waves in V1–V3, discordant ST-T changes

6. 🔀 Right Bundle Branch Block (RBBB)

Overview: Delayed right ventricular depolarization. Can be normal variant or indicate right heart strain, pulmonary embolism, or structural heart disease.

ECG Findings:

Feature	Description
QRS Duration	≥120 ms (complete); 100–120 ms (incomplete)
V1–V3	rSR' pattern ("M-shaped" or "rabbit ears")
Leads I, aVL, V5–V6	Broad, slurred S waves
ST/T	T-wave inversion in V1–V3 (secondary change)

Right Bundle Branch Block ECG:

Right bundle branch block – classic rSR' (M-shape) pattern in V1–V3 with broad slurred S-waves in lateral leads I, aVL, V5–V6

Bifascicular Block (RBBB + Left Anterior Fascicular Block):

Bifascicular block – RBBB with left anterior fascicular block showing left axis deviation with rSR' in V1 and qR in I

7. 🚫 Complete (Third-Degree) AV Heart Block

Overview: Complete failure of AV conduction; atria and ventricles beat independently. Causes include ischemia (inferior MI most common), fibrosis, drugs, and Lyme disease.

ECG Findings:

Feature	Description
P waves	Regular, independent of QRS
QRS	Slow escape rhythm (junctional: narrow 40–60 bpm; ventricular: wide <40 bpm)
PR interval	No fixed relationship (AV dissociation)
Rate	Ventricular rate 20–40 bpm (ventricular escape)

Complete Heart Block + LBBB ECG:

Complete (third-degree) AV block with LBBB escape rhythm – complete AV dissociation, slow wide-complex escape rhythm with P waves marching independently

8. 🫁 Acute Pulmonary Embolism (Right Heart Strain)

Overview: Massive PE causes acute right ventricular pressure overload, producing characteristic ECG changes. ECG alone cannot diagnose PE but raises clinical suspicion.

ECG Findings:

Feature	Description
S1Q3T3	S wave in I, Q wave + T inversion in III
Sinus tachycardia	Most common finding
Right axis deviation	Acute RV pressure overload
Incomplete/Complete RBBB	RV conduction delay
T-wave inversions	V1–V4 (right precordial strain pattern)
P pulmonale	Peaked P waves in II (RAE)

Acute PE with S1Q3T3 pattern:

Acute pulmonary embolism ECG – classic S1Q3T3 pattern with sinus tachycardia and T-wave inversions in V1–V3 indicating right ventricular strain

PE with sinus tachycardia, S1Q3T3 and incomplete RBBB:

Pulmonary embolism ECG – sinus tachycardia, S1Q3T3, incomplete RBBB, and deep T-wave inversions V1–V4 consistent with acute right heart strain

9. 🔋 Left Ventricular Hypertrophy (LVH) / Hypertensive Heart Disease

Overview: Chronic pressure overload (hypertension, aortic stenosis) causes LV wall thickening with characteristic voltage and strain changes on ECG.

ECG Findings:

Feature	Description
High voltage	Sokolow-Lyon: S(V1) + R(V5 or V6) ≥35 mm
Strain pattern	ST depression + T-wave inversion in lateral leads (I, aVL, V5–V6)
Left axis deviation	Common
QRS duration	Mildly prolonged
Cornell criteria	R(aVL) + S(V3) >20 mm (women) or >28 mm (men)

LVH with Strain Pattern ECG:

Left ventricular hypertrophy with strain – high QRS voltage meeting Sokolow-Lyon criteria with ST depression and T-wave inversions in inferolateral leads

LVH strain pattern – tall R waves in V5–V6, asymmetric ST-T changes consistent with pressure overload

10. ⚡ Wolff-Parkinson-White (WPW) Syndrome

Overview: An accessory conduction pathway (Bundle of Kent) bypasses the AV node, causing ventricular pre-excitation. Risk of sudden death if AF conducts rapidly via the accessory pathway.

ECG Findings:

Feature	Description
Short PR interval	<120 ms (bypasses AV node delay)
Delta wave	Slurred upstroke at start of QRS
Wide QRS	>120 ms (fusion of normal + pre-excitation)
Secondary ST/T changes	Discordant, secondary to altered depolarization
Pathway localization	Delta wave polarity in V1/inferior leads identifies location

WPW Syndrome ECG – Classic Triad:

Wolff-Parkinson-White syndrome – short PR interval, prominent delta waves in V2–V6 and inferior leads, widened QRS with secondary ST-T changes

WPW with posteroseptal accessory pathway – negative delta waves in inferior leads mimicking pseudo-infarct pattern

Quick Reference Summary Table

#	Condition	Key ECG Finding	Emergency?
1	STEMI	ST elevation ≥2 leads, reciprocal changes	🔴 Yes – cath lab activation
2	NSTEMI/Unstable Angina	ST depression, T inversion, Wellens' pattern	🟠 Urgent
3	Atrial Fibrillation	Irregularly irregular, no P waves	🟡 Rate control / anticoagulation
4	VT / Torsades	Wide-complex tachycardia, twisting QRS	🔴 Cardioversion / defibrillation
5	LBBB	Wide QRS, broad R in I/V6, QS in V1–V3	🟠 New onset = STEMI equivalent
6	RBBB	rSR' in V1, slurred S in I/V6	🟡 Context dependent
7	Complete Heart Block	AV dissociation, slow escape rhythm	🔴 Pacemaker
8	Pulmonary Embolism	S1Q3T3, sinus tach, RV strain	🔴 Anticoagulation / thrombolysis
9	LVH / Hypertensive HD	High voltage + strain pattern	🟡 BP control
10	WPW Syndrome	Short PR, delta wave, wide QRS	🟠 Ablation indicated

Clinical note: ECG interpretation must always be integrated with clinical history, symptoms, and other investigations. A normal ECG does not exclude significant heart disease.

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