El doctor Steven Shafer dijo al jurado que los niveles de propofol hallados en la sangre de Jackson en la autopsia realizada tras su muerte en junio del 2009 eran demasiado altos para que los explique la teoría de una inyección autoadministrada.
Shafer, el último testigo de la fiscalía en el juicio contra Murray por homicidio involuntario, también intentó socavar la teoría de la defensa de que Jackson ingirió una dosis fatal de pastillas del sedante lorazepam.
Murray admitió a la policía que, mientras estaba en la mansión de Jackson, le inyectó al cantante propofol y lorazepam para ayudarlo a dormir. Pero los abogados del médico han argumentado que el artista podría haber tomado una dosis extra y fatal de propofol mientras se encontraba solo en su dormitorio.
Shafer descartó la idea, diciendo que el cantante de 50 años tendría que haberse inyectado varias veces para acumular el nivel de propofol hallado en su sangre.
"La gente no se despierta de la anestesia así", dijo Shafer al jurado tras agitar sus brazos para imitar a un paciente recuperando la conciencia y luego inyectándose.
"La gente no se despierta empeñada en darse otra dosis. Es una locura", añadió.
Shafer utilizó gráficas para explicar que si bien el propofol puede detener la respiración de una persona, el corazón continúa latiendo por unos 10 minutos y la sangre sigue circulando.
Incluso si Jackson se inyectó a sí mismo una dosis de 100 miligramos de propofol seis veces, y dejó de respirar en la última dosis, su corazón habría seguido latiendo lo suficiente como para bajar la concentración de propofol por debajo del nivel hallado en la autopsia, dijo Shafer.
Murray dijo a la policía que le dio a Jackson sólo 25 miligramos de propofol y dos inyecciones de lorazepam de 2 miligramos cada una el 25 de junio del 2009.
Los análisis hallaron que el propofol fue la principal causa en la muerte del artista y que el lorazepam contribuyó en el fallecimiento.
Los abogados defensores argumentan que Jackson podría haber ingerido más lorazepam de los 4 miligramos que Murray dice que le dio.
Pero Shafer también criticó esa teoría. Dijo que la cantidad de lorazepam hallada en el estómago del cantante era minúscula.
"Los resultados (...) prueban que Michael Jackson no ingirió lorazepam", afirmó.
In English
The affirmation of the doctor's lawyers Michael Jackson the singer caused his death when injected the powerful anesthetic propofol is a "crazy," said an expert in anesthesiology in his testimony on Thursday.
Dr. Steven Shafer told the jury that propofol levels found in Jackson's blood at autopsy performed after his death in June 2009 were too high for explaining the theory of a self-administered injection.
Shafer, the last prosecution witness in the trial of manslaughter Murray, also attempted to undermine the defense theory that Jackson swallowed a fatal dose of pills of the sedative Ativan.
Murray admitted to police that while he was in the house of Jackson, the singer was injected propofol and lorazepam to help sleep. But the doctor's lawyers have argued that the artist might have taken a fatal dose of propofol extra while he was alone in his bedroom.
Shafer dismissed the idea, saying the singer of 50 years should have been injected several times to accumulate the level of propofol found in his blood.
"People do not wake up from anesthesia well," Shafer said the jury after waving his arms to mimic a patient regained consciousness and then injected.
"People do not wake up determined to take another dose. It's crazy," he added.
Shafer used graphs to explain that while propofol can stop a person's breathing, the heart continues to beat for about 10 minutes and the blood is still circulating.
Even if Jackson himself injected a dose of 100 milligrams of propofol six times, and stopped breathing at the last dose, would have followed her heart beating long enough to lower the concentration of propofol below the level found in the autopsy, Shafer said.
Murray told police that Jackson gave only 25 mg of propofol and two injections of lorazepam 2 mg each on June 25, 2009.
The analysis found that propofol was the primary cause of death of the artist and that lorazepam contributed to the death.
Defense attorneys argue that Jackson could have eaten more of the 4 mg lorazepam Murray says he gave.
But Shafer also criticized the theory. He said the amount found in the stomach lorazepam singer was tiny.
"The results prove that Michael Jackson (...) ingested lorazepam no" he said.
Dr. Steven Shafer told the jury that propofol levels found in Jackson's blood at autopsy performed after his death in June 2009 were too high for explaining the theory of a self-administered injection.
Shafer, the last prosecution witness in the trial of manslaughter Murray, also attempted to undermine the defense theory that Jackson swallowed a fatal dose of pills of the sedative Ativan.
Murray admitted to police that while he was in the house of Jackson, the singer was injected propofol and lorazepam to help sleep. But the doctor's lawyers have argued that the artist might have taken a fatal dose of propofol extra while he was alone in his bedroom.
Shafer dismissed the idea, saying the singer of 50 years should have been injected several times to accumulate the level of propofol found in his blood.
"People do not wake up from anesthesia well," Shafer said the jury after waving his arms to mimic a patient regained consciousness and then injected.
"People do not wake up determined to take another dose. It's crazy," he added.
Shafer used graphs to explain that while propofol can stop a person's breathing, the heart continues to beat for about 10 minutes and the blood is still circulating.
Even if Jackson himself injected a dose of 100 milligrams of propofol six times, and stopped breathing at the last dose, would have followed her heart beating long enough to lower the concentration of propofol below the level found in the autopsy, Shafer said.
Murray told police that Jackson gave only 25 mg of propofol and two injections of lorazepam 2 mg each on June 25, 2009.
The analysis found that propofol was the primary cause of death of the artist and that lorazepam contributed to the death.
Defense attorneys argue that Jackson could have eaten more of the 4 mg lorazepam Murray says he gave.
But Shafer also criticized the theory. He said the amount found in the stomach lorazepam singer was tiny.
"The results prove that Michael Jackson (...) ingested lorazepam no" he said.
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