The analysis and shooting reconstruction of the ricocheted shotgun pellet wounds.

BACKGROUND: In this study, a 35 years old man was killed with the ricocheted shotgun pellets wounds from the asphalt road surface. The Public Prosecutor to define the ricochet point requested the ricocheted pellet pattern examination in two different ricochet distances. METHODS: The ten ricochet tests were performed for at 2 meters (point A) and 1 meter (point B) from the target, and the pellet distribution and pattern area were calculated using the gauss method. Then, the test and autopsy results were compared in the pellet number, calculated pellet pattern area and ricocheted angle. Furthermore, the similarity of the pellet number and the pellet pattern areas were examined using the two-tailed Mann-Whitney U test. RESULTS: In this study, 81 pellets recovered from the victim's body and the distribution pattern of pellets area was 2134 cm2. At the ricochet point A, the average number of pellets on the target was 82.1 and the distribution pattern of pellets area was 2700 cm2. At the ricochet point B, the average number of pellets on the target was 132.6 and the distribution pattern of pellets area was 4928 cm2. According to the two-tailed Mann-Whitney U test, there was low-level similarity (p<0.05 level Sig. 0.023; z=-2.424) on the pellet pattern area between autopsy and the ricochet point A. However, as regards the pellet number on the target, there was a similarity (p<0.05 level Sig. 0.481; z=-0.808) between autopsy and the ricochet point A. CONCLUSION: Test results showed that the pellet ricochet occurred two meters from the victim.

[The relationship between Injury Severity Scores and transfusion requirements of 108 consecutive cases injured with high kinetic energy weapons: a tertiary center end-mode mortality analysis]. / Yüksek kinetik enerjili silahlarla yaralanmis ardisik 108 olguya ait ISS degerleri ile transfüzyon gereksinimleri arasindaki iliski ve ileri merkez son mod mortalite analizi.

BACKGROUND: We aimed in this study to investigate the relationship between Injury Severity Score (ISS) and transfusion strategies required during medical intervention in patients wounded by high kinetic energy (HKE) gunshot, and to analyze end-mode mortality. METHODS: The medical data of patients were included in the study. We evaluated whether there was any significant correlation in terms of demographic characteristics, HKE weapon type, ISSs, and transfusion strategy options and transfusion requirements. RESULTS: Causes of mortality in cases resulting in mortality during hospitalization were evaluated. One hundred and eight consecutive patients were included in the study. All patients except one were male, with an average age of 25 years. 64.8% of them were injured by long-barreled firearms, whereas 35.2% were injured by explosives. Average ISS was 13.9. ISS values for the patients with and without transfusion were 16 (5-48) and 9 (3-36), respectively. Causes of mortality were evaluated in terms of systemic inflammatory response syndrome (SIRS), sepsis, and multiorgan dysfunction syndrome (MODS). DISCUSSION: It was determined that there was a significant correlation between increase in ISS values in cases with HKE weapon wounds and their transfusion requirements, whereas this requirement was independent of the ISS value in cases with explosive wounds.

[The wounding potential of free-falling bullets]. / Serbest Düsme Hareketi Yapan Mermi Çekirdeklerinin Yaralama Potansiyelleri.

BACKGROUND: It was aimed in this study to clarify the wounding potential of free-falling bullets fired at 90° or close to right angles. MEHTOHDS: In this study, 9x19 mm and 7.65x17 mm bullets, which are commonly used among civilians, were used. The muzzle velocities of these ammunitions were measured. According to the muzzle velocity data, the free-falling motion and strike velocity of the 9x19 mm and 7.65x17 mm bullets were simulated using the EBV4® External Ballistics Software at angles of 65°-90° with firings at 5° intervals. The simulation results were compared with critical velocity of tissues. In addition, the judicial records and press reports on this type of wound were examined and evaluated in light of the literature. RESULTS: The strike velocity and kinetic energy of free-falling bullets, which were fired into the air at 5° intervals between 65°-90°, were measured. The average strike velocity and kinetic energy of 9x19 mm bullets were 92.25 m/sec and 34.05 J and of 7.65x17 mm bullets were 79.66 m/sec and 14.91 J, respectively. As a result of the archives examination, 65 such wounds were detected between 2000 and 2012, and 27 of them resulted in death. DISCUSSION: According to these results, the strike velocity of free-falling 9x19 mm and 7.65x17 mm bullets, which were fired into the air, exceeds the threshold and critical velocity limits of skin and flat bones, and the kinetic energy of the bullets is able to cause significant wounding. Even though the symptoms and features of these types of wounds may not be similar to those of ordinary gunshot wounds in the first medical examination, the first responders should be aware of the possibility of gunshot wounds, and they should take into account the criminal investigation phase during the treatment process; the necessary precautions should be taken in order to preserve the evidence.