Semi-computational approach for assessing the damage to human soft tissues: the case of FMJRN versus HP-XTP 9 mm bullet penetration in ballistic soap.

Ballistic soap blocks are used in wound ballistics to assess the potential damage of the ammunition employed, allowing observation of the energy transfer occurred along the wound channel. The density and viscosity of ballistic soap (also called tissue simulant) simulate, to a good degree of approximation, the effect resulting from the interaction of penetrating bullets with living human soft tissue. Ballistic soap has a "plastic reaction" to bullet penetration, and therefore, unlike ballistic gelatin, the expansion of temporary cavity remains imprinted in the tissue simulant. When the soap blocks are sectioned or divided with nondestructive instrumental techniques (e.g., Compton's scattering tomography), it's possible, therefore, to observe the temporary cavity determined by the penetration of the bullet. This study provides insight into the severity of injuries originated from two different types of bullets of the same caliber by employing ballistic soap as a tissue simulant. In addition, it provides guidance to forensic practitioners on the proper use of ballistic soap for simulating gunshot wounds. The semi-computational approach employed, based on the results obtained from the firing tests, allowed the authors to understand that there is likely a threshold value of projectile energy density, close to 1 J/mm2, beyond which its penetration into the ballistic soap ceases.

Gunshot injuries in Campania (Italy): A retrospective thirty-years (1981-2011) study.

From 1981 to 2011, 200 firearm deaths were autopsied in Naples, at the Institute of Legal Medicine of the University of Campania "Luigi Vanvitelli". 188 cases were homicides and most of them (116) were related to the local organized crime. The majority of victims were young Italian males in the 20-39 age fired in outdoor environments. The reason for choosing outdoor environments can be related to the opportunity for the killer run from the crime scene immediately after the murder. Only 11 of the bodies autopsied were suicide victims, mostly older individuals, over 50 years -old with history of mental illness. All the suicides occurred in indoor environments in order to protect their domestic intimacy. Only two female victims were accounted in this historical series which is quite impressive if compared to recent phenomenon of feminicides occurring mostly in domestic environments. A total of 772 entry wounds were observed: 658 fired from single-charge handguns and 114 from multiple-charge firearms. 9x21 pistol cartridge was the most common ammo used, followed by the 7.65 Parabellum. The head was the most common anatomical site injured (in 81.8% of the suicides cases and in 68.6% of homicides). Most of the victims of homicide died before arriving at an Emergency Service. Only a minority of victims lived from few hours up to less than a week, after being shot, and very few victims remained alive up to a couple of months.

A Descriptive Study on Causes of Death in Hospitalized Patients in an Acute General Hospital of Southern Italy during the Lockdown due to Covid-19 Outbreak.

(1) Background: All deaths that occurred in a hospital of Southern Italy ("San Giuseppe Moscati" Hospital of Avellino) with medium jurisdiction (up to 425,000 citizens approximately) in the period from 9 March to 4 May 2020 were analyzed. The primary endpoint of the study was to analyze the causes of death in the period study. Secondary endpoints included: (1) the assessment of overall mortality in the emergency period compared with the same period of the past years (2018-2019) in the jurisdiction area; (2) the assessment of the amounts of deaths with positive and negative reverse transcription-polymerase chain reaction (RT-PCR) of nasopharyngeal and oropharyngeal swabs; (3) the frequency of clinical and radiological features consistent with Covid-19 infection in negative RT-PCR cases. (2) Methods: Patients' information and laboratory data were collected through the computerized medical record system (My Hospital, Italy) used for the clinical management of all referring patients. Epidemiological, clinical, and radiological data were reviewed along with the results of nasopharyngeal and oropharyngeal swabs. (3) Results: From 9 March to 4 May 2020, 140 deaths (87 males, 53 females) from all causes occurred in total at "San Giuseppe Moscati" Hospital, of which 32 deaths were Covid-19 related. (4) Conclusions: The excess of mortality could be higher than the one reported in the official epidemiological surveys. False negative cases can have a distorting effect on the assessment of the real mortality rate and the excess mortality. Furthermore, many who died from Covid-19 were likely never tested or they had false negative RT-PCR results. Other victims probably died from causes indirectly related to Covid-19.

Isolated Right Atrial Rupture From Blunt Chest Trauma in Motor Vehicle Collisions: Mechanisms of Injury and Outcomes.

ABSTRACT: Isolated right atrial rupture after nonpenetrating blunt chest trauma is rare, and very few cases have been reported in the literature. Isolated right atrial rupture is a diagnostic challenge in these patients, who are mostly victims of motor vehicle collisions. The clinical presentation is heterogeneous and can vary depending on rupture location and size. The anatomical sites mostly involved are the appendage and the free wall followed by the superior and inferior vena cava junctions. The present case study shows a fatal isolated rupture of the right atrial appendage in a victim of a motor vehicle collision. At the emergency room, a computed tomography scan revealed a severe pericardial blood effusion, and pericardiocentesis was promptly performed. Unfortunately, the patient suddenly worsened just before cardiac surgery. Autopsy findings showed a cardiac tamponade due to a linear laceration 1.8 cm in length on the right atrial appendage. No other relevant injuries were observed. A prompt diagnosis of isolated right atrial rupture can be crucial for victims of blunt chest trauma with unexplained hypotension or hemodynamic instability to improve their chances of survival. Medicolegal issues can be raised mainly related to delayed diagnosis. Once a cardiac rupture is suspected, the injury repair is essential to achieve the best outcome.

Take-Home Messages from the COVID-19 Pandemic: Strengths and Pitfalls of the Italian National Health Service from a Medico-Legal Point of View.

The World Health Organization (WHO) declared the outbreak of the Coronavirus disease-2019 (COVID-19) infection a pandemic on 11 March 2020. As of the end of October 2020, there were 50 million cases of infection and over one million deaths recorded worldwide, over 45,000 of which occurred in Italy. In Italy, the demand for intensive care over the course of this pandemic crisis has been exceptionally high, resulting in a severe imbalance between the demand for and availability of the necessary resources. This paper focuses on elements of preventive medicine and medical treatments in emergency and non-emergency situations which, based on the international scientific literature, may prove to be useful to physicians on a behavioral level and avert professional liability problems. In order to achieve this objective, we have performed a search on MEDLINE to find published articles related to the risks associated with the pandemic that contain useful suggestions and strategies for mitigating risks and protecting the safety of the population. The results have been collocated in line with these specific study areas.

The Motion of the Italian National Bioethics Committee on Aggressive Treatment towards Children with Limited Life Expectancy.

The motion of the Italian National Bioethics Committee entitled "Aggressive treatment or therapeutic obstinacy on young children with limited life expectancy" comprises a premise that rejects therapeutic obstinacy and makes 12 recommendations. Recommendation no. 1 states the general rules: it ascribes a cardinal role to a shared care plan, it supports pain management therapy and pain relief, it opposes ineffective and disproportionate clinical treatment and defensive medicine. The other recommendations are correlated to the enacting of a national law establishing clinical ethics committees in paediatric hospitals; participation of parents and their fiduciaries in the decision-making processes; recourse to courts only as extrema ratio in the event of irremediable disagreement between the medical team and the family members; accompaniment at the end of life also through continuous deep sedation combined with pain therapy; access to palliative care; the need to reinforce research on pain and suffering in children; clinical trials and research studies conducted in children; the training of doctors, healthcare personnel and psychologists, to support parents in emotional and practical terms; the facilitation of the closeness of parents to children in extremely precarious clinical conditions; the relevant role of the associations of parents of sick children. Comments are made, in particular, about the innovative recommendations respectively relating to the adoption of care planning, the establishment, by law, of clinical ethics committees in paediatric hospitals and the limitation of recourse to courts-only as extrema ratio-in the event of irremediable disagreement between the medical team and the family members.

Snakebite Envenoming a Challenging Diagnosis for the Forensic Pathologist: A Systematic Review.

Snakebite envenoming (SBE) is a public health issue in developing countries. The estimated annual global incidence of snakebites is about 5.4 million snakebites per year, resulting from 1.8 to 2.7 million cases of SBE and from 81,000 to 138,000 deaths with 400,000 survivors suffering permanent physical and psychological disabilities. There are more than 3000 species of snakes around the world: 600 are venomous and over 200 are considered to be medically important because of their clinical effects. The severity of SBE depends on several factors among which bite localization, snake's size, condition of glands and teeth, bite angle and bite duration, the microflora of the snake's mouth and victim's skin, age of the victim, weight, health status, and victim's activity after a bite. Snake venoms are mixtures of protein families, and each of these families contains many different toxins or toxin isoforms. Based on their effects, snake venoms can be classified as hemotoxic, neurotoxic, or cytotoxic and they can all act together involving multiple tissues and organs. When the bite is fatal, the mechanism of death is primarily related to the paralysis of respiratory muscles, which causes asphyxia and hypoxic-ischemic encephalopathy, but also anaphylactic shock, hemorrhagic shock, cardiomyopathy, acute tubular necrosis (ATN). The purpose of this literature review is to evaluate epidemiological and post-mortem examination findings in fatal SBEs in order to better understand the pathophysiological mechanisms, thus helping pathologists in defining the correct diagnosis.

Autopsy Findings in Case of Fatal Scorpion Sting: A Systematic Review of the Literature.

Scorpion sting is a public health issue in several countries, particularly in America, the Middle East, India and Africa. The estimated annual global incidence of scorpion envenomings is about 1.5 million, resulting in 2600 deaths. Scorpions are Arthropoda characterized by a tail ending in a terminal bulbous (telson) containing paired venom glands and the stinger. There are 19 known families of scorpions and more than 2200 species, of which about 50 from the families of Buthidae, Hemiscorpiidae and Scorpionidae are harmful to humans. Scorpion venom is a complex structure composed of neurotoxic proteins, salts, acidic proteins and organic compounds, thereby having neurologic, cardiovascular, hematologic and renal side effects, in addition to local effects such as redness, pain, burning and swelling. When the sting is fatal, the mechanism of death is often related to cardiotoxicity with terminal pulmonary edema. However, the cholinergic excess or the neuromuscular excitation can provoke respiratory failure. Sometimes, death is due to an anaphylactic reaction to the envenoming. The purpose of this literature review is to evaluate the autopsy findings in scorpion sting-related deaths in order to better understand the pathophysiological mechanisms underlying them, thus helping pathologists in defining the correct diagnosis.

Undetected traumatic diastasis of cranial sutures: a case of child abuse.

Traumatic diastasis of cranial sutures is a type of bone fracture more common in children than in adults, but little attention has been paid to this skull damage. Differentiation between inflicted and accidental traumatic head injury is still a challenge in forensic pathology, particularly in pediatric population. In fact, diastasis of cranial sutures may occur with or without other skull fractures and may be the only evidence of an abusive head trauma (AHT). This is a case study dealing with undetected traumatic diastasis of cranial sutures in child abuse. The skeletonized juvenile remains were found inside a suitcase. A diastasis of the coronal and sagittal sutures was the only finding recorded at the autopsy with no other relevant bone defects. The diastasis was originally attributed by the medical examiner to a physiological unfused stage of the calvarial bones. Therefore, the cause of death was undetermined. Twelve years later an anthropological revision of the cold case showed that diastasis of the coronal and sagittal sutures was assessed as the evidence of an AHT. Analysis of skull fractures in child abuse can be challenging as normal skull suture variants mimicking intentional injury are reported. Diastasis of the cranial sutures can be also a post-mortem effect of burning or freezing. Therefore, a differential diagnosis between natural, accidental or inflicted skull defects is mandatory in death investigation. A multidisciplinary approach in such circumstances is strongly recommended in order to reduce the risk of misdiagnosis.

Pericarditis Epistenocardica or Dressler Syndrome? An Autopsy Case.

Postinfarction pericarditis can be classified as "early," referred to as pericarditis epistenocardica, or "delayed," referred to as Dressler syndrome. The incidence of postinfarction pericarditis has decreased to <5% since the introduction of reperfusion therapies and limitation of infarct size. We report on a 57-year-old man who suffered sudden cardiac death as a result of acute myocardial infarction. Autopsy revealed an area of previous infarction and fibrinous pericarditis related to the previous infarction, leading to a diagnosis of Dressler syndrome.