The Oregon Supreme Court has released a fascinating opinion on expert testimony.
The Court stated that the Plaintiff
experienced symptoms of pain, swelling, and discoloration in her left hand immediately after injection of a chemical called gadolinium; her pain and the discoloration have continued. At trial, plaintiff proffered the testimony of a medical expert that the gadolinium, instead of going into the vein, went into an area of her hand outside the vein, a circumstance known as "extravasation." As a result, according to the expert, the toxicity of the gadolinium caused both her immediate and her ongoing symptoms. Defendants objected to the expert’s proffered testimony, and the trial court ruled that the testimony did not meet the legal standard for scientific validity. The Court of Appeals affirmed.