Gerometta R, Larroza GO, Pimpinella P, Genero S

Language: Spanish
References: 13
Page: 15-23
PDF size: 468.28 Kb.

ABSTRACT

Introduction: Postmortem Interval estiamtion is a measure of singular importance in Legal Medicine. Due to its complexity, it needs objective evaluation in Forensic Pathology.
Methods: In this study we propose the use of a bovine model to sytematically measure premortem and postmortem Intra-Ocular Pressure (IOP) as well as analyze its evolution with time as a possible non-invasive method to estimate PMI. A prospective, descriptive, observational study was carried out, using 12 cows. For the determination of the IOP, the aplanatic manual Perkins tonometer calibrated for bovines was used. The measurement of the IOP was done at establisehd post-mortem intervals.
Results: The mean IOP at hour 0 in OD was 13.48 mm Hg and 13.59 mm Hg in OS with minimal variation between groups; at hour 30 hr, the IOP was 6.41 and 6.45 mm Hg in OD and OS respectively. We observed a decrease of the IOP in al leyes, directly related to the elapsed time of death.
Discussion. The uniformity of the IOP estimations in relation to postmortem interval allows us to consider it as a valuable parameter for postmortem interval even several hours after death.

REFERENCES

1. Bañón Gonzalez R (2010). Rev Esp Med Legal. 36(2):83-86.

2. Henssge C, Madea B (2004). Estimation of the time since death in the early post mortem period. Forensic Sci Int. 144:167-75.

3. Villanueva E (2005). Medicina legal y toxicología, Capítulo XVII, Pagina 202, Editorial Masson, 6° Edición, Barcelona – España.

4. Krenser U. Compendio de métodos antropológico forenses. Tomo 7 Pág. 5 Centro de Análisis Forense y Ciencias Aplicadas CAFCA SBN: 99922-859-7-4.

5. Luna M (2010). Rev Esp Med Legal. 36(2):47-48.

6. Jaffe F (1962). Chemical postmortem, changes in the intraocular fluid. J for Sci. 7: 231–237.

7. Blumenfield TA, Blanc WA, Devlin J (1974). Vitreous humor concentration of sodium, potassium chloride, calcium and magnesium in children. Pediatric Res; 8 : 356.

8. Govekar G (1997). Study of potassium in vitreous in relation to time since death and cause of death. J For Med, 14 (1): 26 –28.

9. Mulla A (2005). Vitreous Humor Biochemical Constituents: Evaluation of Between-Eye Differences Am J Forensic Medicine, 26 (2):146-149.

10. Arroyo A (2004). Bioquímica postmortem: comparación de tres métodos de análisis Cuadernos de Medicina Forense Nº 36.

11. Cole, DF (1977). Secretion of the aqueous humour. Exp Eye Res. 25 (Suppl), 161-76.

12. Gerometta R (2004). Steroid-Induced Ocular Hypertension in Normal Cattle Arch Ophthalmol, 122:1492-97.

13. Verdú F (2015). Gac Int Cienc Forense Nº 17. Revista Mexicana de Medicina Forense y Ciencias