Lichtenberg Figures: How a Cutaneous Sign Can Solve Suspicious Death Cases.

Lightning is a natural weather phenomenon that occurs most commonly during the summer months in the afternoon or early evening. Lightning strikes can cause accidental deaths. In developed countries, lightning fatalities occur almost exclusively outdoors. Deaths from lightning may be in remote places with no witnesses. Forensic pathologists may not be able to reach the scene of death because it is too hazardous or inaccessible. Bodies may have neither evidence of skin burns nor torn areas on their clothes. The presumption of accidental death may be difficult to prove. We present 3 cases in which neither the examination of the death scene nor the examination of the bodies by those who attested to the death were performed. The bodies were transported to the morgue for a forensic autopsy because the deaths were considered suspicious. Physicians who attest to death in open spaces during weather that could produce lightning should actively search for Lichtenberg figures, which are considered irrefutable proof of fatal lightning in such settings. They should also photograph them and submit them as evidence. Nevertheless, physicians should keep in mind that Lichtenberg figures are not considered pathognomonic of lightning because some skin manifestations may mimic them.

[Relation entre la température ambiante, l'humidité et la mort subite cardiaque au nord de la Tunisie]. / Relationship between ambient temperature, humidity and sudden cardiac death in northern Tunisia.

BACKGROUND: Several studies have suggested a relationship between weather parameters and the occurrence of sudden cardiac death. AIM: The aim of this work was to study the impact of changes in temperature and humidity level on the occurrence of sudden cardiac death in the north of Tunisia. METHODS: it's an autopsic study that included all victims of sudden cardiac death occurring in northern Tunisia between October 2010 and September 2012. The minimum, maximum and average of daily temperatures and humidity during the study period were recorded and compared with the monthly variation in the occurrence of sudden death. RESULTS: The study population included 392 men and 108 women with a mean age of 52.2 + / - 15.8 years.The highest rate of sudden death (37%) was observed at ambient temperatures below 15 degrees and only 4.2% of deaths occurred at temperatures above 30 degrees ambient temperatures (p <0.001). Among the population aged over 60 years, the highest mortality rate (47.3%) were recorded at temperatures below 15 degrees, while 35.5% of young patients under 40 years died during periods with temperatures between 20 and 30 degrees and 56.8% of deaths occurred in the humidity levels between 60 and 78% . CONCLUSION: In the north of Tunisia where the climate is temperate, a temperature drop below 15 degrees was significantly associated with a sudden cardiac death. This excess winter cardiac mortality was more pronounced in the elderly.

[Weekly variation of sudden cardiac death in northen Tunisia]. / La variation hebdomadaire de la survenue de mort subite cardiaque au nord de la Tunisie.

BACKGROUND: The sudden cardiac death remains a major public health problem. Several studies have reported weekly variation of this dramatic event. AIM: The aim of this work is to determine the day-of-week variability in sudden cardiac death in northen Tunisia. METHODS: We prospectively collected clinical, socio demographic and autopsic data of victims of sudden cardiac death occurring in the northern Tunisia between october 1 st ,2010 and september 30,2012. RESULTS: The study population included 392 men and 108 women with a mean age of 52.27 + / - 15.8 years. Three quarters of the victims was sedentary, 57.9% were smoker and a family history of sudden death was identified in 9.8% of cases. The vast majority of deaths had occurred either in a public place (41.4%) or at home (36.6%). Ischemic heart disease was the leading cause of death with 267 cases (53.4%); however a negative autopsy was found in 13.9% of victims. The highest sudden death occurrence was on Sundays (17.8%) and the lowest on Mondays (11.4% p: 0.01).The same weekly variation was noted among both men and women , and also in victims > 60 years, a minimum of events occurred on Mondays (11.6%) and a maximum on Sundays (21.9%). In addition, we found the same peak of mortality on Sunday (18.8%) in young adults and the nadir on Monday (10.3%). CONCLUSIONS: The present study demonstrates marked variation in the occurrence of sudden cardiac death in the northern Tunisia with peak on Sundays and nadir on Mondays. No age or gender- related differences were found in weekly variation of sudden death.

Sudden death due to pulmonary embolism in north Tunisia: 37 cases study.

AIM: To determine frequency of pulmonary embolism as the cause of sudden death and to study clinical, epidemiological characteristics and risk factors. METHODS: Prospective study of cases of sudden death secondary to pulmonary embolism, whose autopsy was performed in the forensic department of Tunis, between October 2009 and of September, 2011. RESULTS: During study period, 37 cases of pulmonary embolism were recorded. They represented 6.8 % of all cases of sudden cardiovascular deaths. Victims were male in most cases (65 %). Victims were aged between 21 and 87 years with an average age of about 52 years. Pathological histories were noted in 9 cases: three cases of recent surgery, four cases of pelvic trauma, a case of ovarian tumor and a case of which the PE arose in post-partum. Concerning other risk factors of pulmonary embolism, confinement to bed was noted in 24 cases (64.8 %), obesity in 12 cases (32.4 %), an arterial high blood pressure in 4 cases. Histories of psychiatric pathology were noted in 5 cases (13.5 %). Symptomatology preceding death was dominated by sudden death (35 %) followed by dyspnoea (30 %) and thoracic pains (16 %). In 8 cases , victims consulted emergencies within 48 hours preceding death, for a varied symptomatology without diagnosis of pulmonary embolism is suspected. At autopsy, in 30 cases embolism was massive. In 29 % of the cases, a deep venous thrombosis was revealing in particular at the primitive iliac veins. CONCLUSION: Pulmonary embolism is an affection that still kills a lot. It can benefit from prevention and from an effective treatment. This testifies the major importance of clinical diagnosis of pulmonary embolism as well as the technical means for the diagnosis.

Prognostic Value of ISS and TRISS Scores in Tunisian Terrorism Victims.

INTRODUCTION: Injuries caused by terrorism attacks are one of the urgent problems of the society and the health system. In this work, we aimed to assess the injury severity score (ISS) and trauma injury severity score (TRISS) in Tunisian military combatants injured during terrorism attacks. MATERIALS AND METHODS: A total of 153 victims of terrorism admitted to the Military Hospital of Tunis between January 2012 and January 2017 were included. Among them, 107 survived and 46 died (43 victims died at the terrorist attack scene and 3 died in the hospital). All dead patients were autopsied. Injury severity scores and TRISSs were then calculated by 2 professors in the anesthesia-resuscitation department, and the agreement level was assessed using the Bland and Altman curve. RESULTS: We obtained a strong agreement between the 2 experts when assessing the TRISS and ISS. Using the Bland and Altman curve, an agreement between the 2 experts was obtained between 0 to 40 and 60 to 75 for the ISS and between 0 to 25 and 75 to 100 for the TRISS. Moreover, we detected a high level of ISS and TRISS, especially in deceased victims compared to survivors (P <.001). To predict mortality, we revealed by the receiver operating characteristic curve high sensitivity and specificity (more than 90%) before day 28 of hospital stay as well as for ISS and TRISS. Regarding the mechanism of injury, patients injured by gunshot have higher ISSs and TRISSs than those injured by explosion (P < .001). CONCLUSIONS: Injury severity scores and TRISSs showed a high reliability to predict the mortality rate in Tunisian victims of terrorism.

Risk factors of sudden cardiac death in women: A 10 years study in Tunisia.

BACKGROUND: Sudden cardiac death (SCD) represents a frequent etiology of sudden death. It represents a major public health issue. Few data about SCD in women are available from the Arab world. Our work aimed to analyze the risk factors of sudden cardiac death in Tunisian women in comparison with men. METHODS: A cross-sectional retrospective study including all sudden cardiac death cases, conducted in the Forensic Medicine Department of the main teaching hospital of Tunis, between January 2010 and December 2019. RESULTS: We counted 417 cases of sudden cardiac death in women representing 17.5% of the total number of sudden cardiac deaths recorded during the study period. The average age was 60.03 ± 15.01 years with a predominance of urban married women. The most frequent cardiac risk factors were high blood pressure (50%), diabetes (36.2%), and cardiac disease history (34.2%). Predominately married women with a history of High blood pressure and diabetes, had a high predictive of sudden cardiac death. CONCLUSION: Cardiac sudden death is no longer a male focused issue. As a matter of facts Rates of SCD in women are rising with a different pattern. We will highlight the importance of adopting specific preventive measures of SCD in female.

[Diurnal, weekly and seasonal variation of sudden cardiac death in northern Tunisia]. / Mort subite d'origine cardiaque au nord de la Tunisie : variation circadienne, hebdomadaire et saisonnière.

BACKGROUND: Several studies have reported a circadian variation in the occurrence of sudden cardiac death. AIM: To analyze the circadian, weekly and seasonal variations of sudden cardiac death occurring in northern Tunisia. METHODS: We prospectively collected epidemiological and autopsic data of victims of sudden cardiac death occurring in the northern governorates of Tunisia between October 2010 and September 2012. RESULTS: The study population included 392 men and 108 women with a mean age of 52.3±15.8 years. Physical inactivity and smoking were the most common risk factors, they accounted for 76.4% and 57.9% respectively. Family history of sudden death was identified in 9.8% of victims. The vast majority of deaths occurred in a public place (41.4%) or at home (36.6%). Ischemic heart disease was the most frequent causes of death (269 cases). Sudden cardiac death was homogeneously distributed over the day. A maximum of events occurred on Sundays (17.8%) and a minimum on Mondays (11.4%), we also recorded an excess cardiac mortality in winter with a peak in December and a nadir in September (13% vs. 4.4% P=0.0001). CONCLUSIONS: In northern Tunisia, under Mediterranean climate, a winter excess cardiac mortality was found. Sudden cardiac death was homogeneously distributed over the day, however, an excess of mortality was recorded over the weekend with a nadir on Monday.