Heart weight must not be measured before dissection during autopsies

Area of Science:

• Forensic Pathology
• Cardiovascular Pathology

Background:

• Heart weight is a critical parameter for assessing cardiac pathology during autopsies.
• Current autopsy procedures lack a standardized method for accurate heart weight measurement.

Purpose of the Study:

• To establish a standardized protocol for accurate heart weight measurement at autopsy.
• To quantify the impact of different dissection and preparation methods on heart weight.

Main Methods:

• The study involved weighing the hearts of 58 deceased individuals using three distinct methods: (a) after dissection from the pericardial sac, (b) after dissection with manual blood/clot removal (short-axis or inflow-outflow), and (c) after rinsing and drying.
• Comparison of heart weights obtained through these different preparation techniques.

Main Results:

• Dissection using the inflow-outflow method resulted in a 7.8% lower heart weight, while the short-axis method yielded an 11.6% reduction compared to pre-dissection weights.
• Further reduction of 2.9% to 5% was observed after rinsing and drying the heart post-dissection.

Conclusions:

• A standardized method for heart weight determination at autopsy is essential for accurate cardiac pathology assessment.
• The recommended procedure involves dissecting the heart, meticulously removing blood and clots, rinsing with water, and drying thoroughly before weighing.