Accuracy of intracardiac injections determined by a post-mortem study

Area of Science:

• Cardiology
• Forensic Pathology
• Medical Procedures

Background:

• Intracardiac injections are a critical intervention during cardiopulmonary resuscitation (CPR).
• Accurate needle placement is essential for drug delivery and patient survival.
• Previous studies have highlighted potential inaccuracies in injection site selection.

Purpose of the Study:

• To determine the frequency and accuracy of intracardiac injection sites in patients who underwent CPR.
• To identify common puncture sites and adjacent structures.
• To provide data for improving injection techniques in emergency medicine.

Main Methods:

• Necropsy analysis of 18 patients who died after unsuccessful CPR, examining injection sites.
• Post-mortem injection studies on 20 additional cadavers to confirm findings.
• Detailed documentation of punctured cardiac chambers and other organs.

Main Results:

• The heart was punctured in only 72% of patients (13 out of 18).
• Of 46 injections, 11% pierced the left ventricle and 28% the right ventricle.
• Common puncture sites included the fourth intercostal space; the right ventricle was the most frequent site overall.

Conclusions:

• Intracardiac injections frequently miss their intended target, with a high rate of ventricular puncture.
• The right ventricle is the most common unintended puncture site.
• Findings underscore the need for improved training and technique in emergency intracardiac injections.