Bob Ward Retrial Day 3 Part 1 Forensic Scientist Beata Vida Testifies

TL;DR

DNA evidence and toxicology results were analyzed to determine the cause of Mrs. Ward's death and potential effects of alcohol and medication on her behavior.

Transcript

consumed in excess all right and let's take that and break it down a little bit what's the central nervous system depressant and then what do you mean when taken to excess and is Larry like different effects that ethanol has before this magic excess the central nervous system is the CNS and that pertains to our brain primarily so in toxicology the ... Read More

Key Insights

• 😟 Ethanol is a central nervous system depressant that can impair motor skills, coordination, and cognitive function.
• ❓ Citalopram and trazodone are antidepressant medications that can cause sedation and lethargy in excessive doses.
• ⌛ The concentration of ethanol in the blood can help determine if an individual was under the influence of alcohol at the time of their death.
• 🧡 The therapeutic concentration range of citalopram in living individuals is 9 to 200 nanograms per milliliter, while the concentration detected in Mrs. Ward's blood was below the therapeutic range.
• 🏣 Post-mortem drug redistribution can affect the concentration of drugs in different samples, highlighting the need for cautious interpretation of results.

Questions & Answers

Q: Was Mrs. Ward's blood alcohol concentration above the legal limit for DUI?

Yes, her blood alcohol concentration was 0.133 grams per 100 milliliters, above the legal limit of 0.08 for DUI in all states.

Q: Did Mrs. Ward have other drugs in her system besides alcohol?

Yes, toxicology analysis detected citalopram and trazodone in her blood, although their concentrations were below therapeutic levels.

Q: Can one determine the exact effects of alcohol or medication on an individual's behavior based solely on their blood alcohol level or drug concentration?

No, the effects of alcohol and medication can vary among individuals, making it difficult to determine the specific behavioral effects based on concentration alone.

Q: Can tolerance to ethanol or medication affect the individual's level of impairment?

Yes, tolerance to ethanol or medication can diminish the perceived effects of the substances, leading to impaired faculties despite having a certain blood alcohol or drug concentration.

Summary & Key Takeaways

• DNA samples were collected from Mrs. Ward's DNA card and analyzed using PCR amplification to develop a DNA profile at 13 specific locations.

• Toxicological analysis detected the presence of alcohol (ethanol) and medication (citalopram and trazodone) in Mrs. Ward's blood.

• The ethanol concentration exceeded the legal limit for driving under the influence (DUI) in all states.

• The concentrations of citalopram and trazodone were found to be below therapeutic levels, suggesting no significant effects on Mrs. Ward's behavior.

• Post-mortem examinations of eye fluid and blood samples showed similar alcohol concentrations, indicating confirmation of the results.