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  • It also showed some elements that create some perplexity, namely a rupture pulmonary alveoli, which we have now been able to verify again, and which does not part of the usual picture of carbon monoxide poisoning. In fact, the diagnosis of carbon monoxide poisoning is almost a diagnosis of exclusion, when we exclude other causes of death and when we detect these typical colorations in the body and then the concentrations laboratories, in laboratory, that justify a death by the product. Otherwise, no they leave nothing more specific, or they tend to leave nothing more specific ».

Having described part of the picture he encountered, Duarte Nuno Vieira characterized intoxication by carbon monoxide as follows:

«To also tell you that death by carbon monoxide has some ubiquity; that is, the levels carboxyhemoglobin mortals vary slightly from person to person, naturally depend on the person's previous health status, depend on their physical characteristics, depend on the concentration in the environment. A normal citizen may begin to experience symptoms carbon monoxide poisoning from 2 - 20%, but usually from 10-20% is when they become clearer, and carboxyhemoglobin levels above 60% already they are necessarily deadly. Death occurs because there is no more oxygen supply to the tissues, carboxyhemoglobin has an affinity for hemoglobin 250 times higher than that of oxygen. And therefore, hemoglobin instead of transporting oxygen to the tissues becomes trunsport this chemical agent, the tissues cease to be sufficiently oxygenated and the person dies asphyxiated so to speak, because he does not have enough oxygen supply ».

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The context of habitual carbon monoxide poisoning, however, varies from person to person. person, which made the technicians of the Institute of Legal Medicine question the simultaneity of the death of José Moreira and Elisabete Silva:

“But, as I was telling you, the speed at which this death can occur will, of course, vary from person to person, and right away one of the things that caused me some perplexity in this case concrete was the faci thar the two people appeared dead at the same time, as if the product would have done the same action on both people simultaneously, which is not normal. Because they are people with totally different physical characteristics the product would be expected to have also different performance levels, that one of them had died first and the other one a little later or even if he realized that something wouldn't be right when he saw the another person loses consciousness ».

In short, in addition to the simultaneous death, the analysis of José Moreira's tissues showed a rupture pulmonary alveoli, a fact that the technicians of the Instituto de Medicina Legal perpetual. According to Duarte Nuno Vieira, this can only occur in two situations:

  • {...) In mechanical asphyxiation, when they result from an occlusion of the airways to drown oui shouting or trying to kill the person by covering the mouth and nose with your hands, where efforts Respiratory conditions actually cause the pulmonary alveoli to rupture; in drowning,

because the person, first, holds his breath and then, when he can do it anymore, he makes a