FORENSIC MEDICINE with Pathology & Entomology
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Notes in FORENSIC MEDICINE With Pathology & Entomology By: OSCAR GATCHALIAN SORIANO BSCrim., MSBA, MA Crim., PhDCrim. Philippine Copyright 2012 by OSCAR GATCHALIAN SORIANO and NUEVA ECIJA REVIEW CENTER AND EDUCATION SUPPLIES. All rights reserved. No portion of this book may be used or reproduced in any manner without written from the author, and every copy of this book must bear the genuine signature of the author, otherwise it shall be considered as proceeding from illegal sources. ISBN: 978-971-95318-8-10 Cover Design By : Mr. Darwin G. Verde, LC Layout design By : Prof. Mario C. Rosete, LC Edited By : Prof. Expectation C. Gonzales Proof Read By : Prof. Diona D. Macasaquit Published and Printed By: Nueva Ecija Review Center & Educational Supplies 3F Verde‘s Furniture Bldg., Brgy. Bantug Norte Cabanatuan City Tel. No. : (044) 940-7005 e-mail: [email protected] website: www.nerces.multiply.com ACKNOWLEDGMENT The author‘s deepest gratitude and profound appreciation is hereby due to the authors of the books and reference materials used and consulted in the preparation of this work. To his family for its moral support, trust and confidence that boost his morale to overcome all the odds while writing this book. To all the people who in way one of another shared their contributions – morally and financially that contributed immensely to the completion of this book. Above all, to the ALMIGHTY GOD for the guidance and blessings bestowed upon him in the painstaking effort and time exerted in this work. O.G.S. DEDICATION To my wife—Marilou, my children---ulius Oscar, Ernest Oscar, Michael Oscar and Loumarie Oscar, to my grandson—Marius Ozrak; to my mother— Victoria Gatchalian Soriano, to my brothers and sisters, and especially to my late father---Ernesto Francisco Soriano. To my relatives, friends, contemporaries in the academe, and to all the students of Criminal Justice Education. To the constituents of the Municipality of Santa Rosa, Province of Nueva Ecija and to the officers and members of the Philippine National Police (PNP). This simple work is sincerely and humbly dedicated to all of you. O.G.S. TABLE OF CONTENTS Page TITLE PAGE………………………………………………………. i COPYRIGHT PAGE……………………………………………….. ii ACKNOWLEDGMENT……………………………………………. iii DEDICATION……………………………………………………….. v CHAPTER CHAPTER 1. GENERAL CONSIDERATIONS Introduction…………………………………………….. 1 Definition of Forensic Medicine……………………….. 1 Scope of Forensic Medicine……………………………. 2 Ordinary Physician vs. Medical Jurists………………… 2 Areas of Forensic Medicine……………………………. 3 Brief History of Forensic Medicine……………………… 4 Definition of Medical Evidence………………………….. 7 Types of Medical Evidence………………………………. 8 Methods of Preserving Medical Evidence………………… 8 Weight and Sufficiency of Medical Evidence……………. 9 2. ASPECTS OF IDENTIFICATION Definition of Identification of Person…………………. 11 Bases of Person‘s Identification………………………. 11 Extrinsic Factors in Identification……………………… 12 Light as a Factor in Identification……………………… 12 Dental Identification…………………………………… 13 Identification of Skeleton………………………………. 14 Determination of Sex…………………………………… 16 Determination of Age…………………………………… 18 Role of Medico Legal Officer in Establishing Identity…. 20 3. MEDICO-LEGAL ASPECTS OF DEATH Overview of Medico Legal Aspects of Death………….. 21 Definition of Death……………………………………… 22 Criteria in the Determination of Death…………………… 22 Kinds of Death…………………………………………… 23 Signs of Death……………………………………………. 24 Changes in the Body Following Death…………………… 29 Duration of Death…………………………………………. 43 Value of Medico-Legal Aspects of Death………………… 47 4. INVESTIGATION OF DEATH Stages of Medico-Legal Investigation of Death………….. 48 Pathological vs. Medico-Legal Autopsies………………… 49 Features Peculiar to Medico-Legal Autopsies…………….. 50 Guidelines in the Performance of Autopsies………………. 51 Precautions in Post-Mortem Examination………………….. 52 Stages on the Post-Mortem Examination…………………… 52 Mistakes in Medico-Legal Autopsies……………………….. 53 Causes of Death…………………………………………….. 55 Medico-Legal Classifications of Death…………………….. 56 Pathological Classifications of Death……………………… 56 Death Scene Investigation………………………………….. 57 5. DEATH BY ASPHYXIA Definition of Asphyxia………………………………………. 58 Types of Asphyxial Death…………………………………… 58 Phases of Asphyxial Death…………………………………… 59 Classifications of Asphyxia………………………………….. 60 6. MEDICO-LEGAL ASPECTS OF INJURIES Definition of Physical Injuries……………………………… 63 Grouping of Physical Injuries………………………………. 63 Injuries Brought About by Violence……………………….. 64 Vital Reactions…………………………………………….. 64 Classifications of Physical Injuries…………………………. 65 Medical classifications of Wounds………………………….. 71 Fatal Effects of Wounds……………………………………. 92 Complications of Trauma or Injury………………………… 93 Describing the Physical Injuries……………………………. 93 7. INVESTIGATION OF WOUNDS Outline of Investigation……………………………………. 97 Wounds Inflicted During Life of Death……………………. 100 Length of Survival of the Victim………………………….. 104 Possible Instrument Used by Assailant…………………….. 105 Which Injuries Sustained Caused Death…………………… 106 Which Wound was Inflicted First………………………….. 106 Surgical Intervention Before Death………………………… 106 Negligence on the Death of Person…………………………. 107 Power of Volitional Act of the Victim………………………. 107 Relative Position of the Victim and Assailant……………….. 108 Extrinsic Evidences in Wounds…………………………….. 109 8. MEDICO-LEGAL ASPECTS OF SEX CRIMES Definition of Virginity………………………………….. 111 Kinds of Virginity………………………………………. 111 Determination of the Conditions of Virginity…………… 113 Virginity is Not Synonymous with Chastity…………….. 117 Defloration Defined……………………………………… 118 Examining Female Genetalia to Determine Virginity……………………………………………… 118 Causes of Vulvo-Vaginal Injuries………………………… 119 Inclusion in the Examination of the Hymen……………….. 120 Death Related to Sexual Acts……………………………… 123 Medical Evidences in the Crime of Rape…………………. 125 9. MEDICO-LEGAL ASPECT OF ABORTION Definition of Abortion…………………………………….. 130 Different Types of Abortion………………………………. 130 Categories of Induced Abortion…………………………… 131 Varied Types of Clinical Abortion…………………………. 132 Medical Evidences of Abortion……………………………. 133 Post-Mortem Abortion……………………………………… 134 10. FORENSIC PATHOLOGY What is Pathology…………………………………………… 135 Definition of Forensic Pathology……………………………. 135 Branches of Forensic Pathology…………………………….. 135 Scope of Forensic Pathology………………………………… 136 Roles of Forensic Pathologist………………………………… 137 Concern of Forensic Pathology………………………………. 138 Forensic Pathology Process………………………………….. 139 Significance of Forensic Pathology………………………….. 140 11. FORENSIC ENTOMOLOGY Definition of Forensic Entomology…………………………… 141 What is Medico-Legal Forensic Entomology…………………. 141 Using Insects to Determine Post-Mortem Interval…………….. 142 Information from the Death Scene…………………………….. 143 How Insects Reveal the Time of Death……………………….. 145 Use of Insects to Tell If a Body Was Moved………………….. 146 Insect Types Useful in Forensic Entomology………………….. 148 Finding the Cause of Death Using Entomology……………….. 151 Estimating Time of Death with Entomology………………….. 152 Entomology to Know Body Removal at the Scene…………… 153 Analyzing the Scene for Entomological Evidence………………………………………………… 154 Observations of Insects at the Crime Scene………………… 155 Climatological Data at the Scene……………………………. 156 Collection of Entomological Specimens…………………….. 157 Conclusion…………………………………………………… 157 BIBLIOGRAPHY……………………………………………………… 158 CHAPTER 1 GENERAL CONSIDERATIONS ========================================================== Introduction The concept and practice of forensic medicine in the Philippines is of Spanish origin. In modern times, especially in continental European countries, forensic medicine has a similar meaning as the term legal medicine, although, strictly speaking, forensic medicine concerns with the application of medical science to elucidate forensic problems, while legal medicine is primarily the application of medicine to legal cases. According to Section 5, Rule 138, Rules of Court, Medical Jurisprudence is one of the subjects in the law course before admission to the bar examination. This is based on the original concept but actually it must be the study of legal medicine as it was the intention and practice in the past. Definition of Forensic Medicine Forensic Medicine is the branch of medicine that deals with the application of medical knowledge to the purpose of law and in the administration of justice. It is the application of the basic clinical, medical and paramedical sciences to elucidate forensic matters. Originally the terms forensic medicine, legal medicine and medical jurisprudence are synonymous, and in common practice are used interchangeably in relation with the practice of medico-legal profession. This concept prevailed among countries under the Anglo-American influence. On the other hand, medical jurisprudence, juris-law, prudential-knowledge denotes knowledge of law in relation to the practice of medicine. It concerns with the study of the right, duties and obligations of medical practitioner with particular reference to those arising from doctor-patient relationship. This is provided by the Code of Ethics of Medical Profession. Scope of Forensic Medicine The Scope of forensic medicine is quite broad and encompassing. It is the application of medical and paramedical sciences as demanded by law and administration of justice. The knowledge of the nature and extent of wounds had been acquired in surgery, abortion in gynecology, sudden death and effect of trauma in pathology,