Determining Cause of Death: Suffocation vs. Heart Attack – Forensic Differences

Suffocation Findings

• External: Cyanosis (bluish skin/lips), neck/face/airway injuries from resistance.
• Internal: Lung congestion/edema, petechiae on face/neck, foam/fluid in airways, brain hypoxia signs.
• Forensic: Ligature marks, pillow/plastic bag evidence, manual strangulation abrasions.

Heart Attack (Myocardial Infarction) Findings

• Heart Tissue: Necrotic muscle from blocked coronary flow; infarct or ruptured plaque visible.
• Symptoms (Antemortem): Chest pain > few min, shortness of breath, nausea, sweating, dizziness.
• Postmortem: Histology shows infarction; coronary artery pathology.
• Context: Risk factors (smoking, diabetes, family history); no foul play evidence.

Forensic investigation (autopsy, scene analysis) distinguishes these in suspicious/unexpected deaths.