Judy Nield v. Pocatello Health Services, Inc.

Summary

The Idaho Supreme Court reviewed a summary judgment dismissing Judy Nield’s negligence action against Pocatello Health Services, Inc., arising from MRSA and pseudomonas infections allegedly acquired while receiving wound care. The court held that the district court improperly used a differential-diagnosis analysis to determine the admissibility of Nield’s expert testimony and improperly relied on the opposing expert’s affidavit as a measure of admissibility. The judgment was vacated and the case was remanded for further proceedings.

Holdings

1. The district court erred by excluding Dr. Selznick's affidavit solely because it did not eliminate every possible alternate source of Nield's MRSA and pseudomonas infections. Where the diagnosis is undisputed and the expert states a causation opinion to a reasonable degree of medical certainty, differential diagnosis is not required merely to resolve an opposing expert's competing account of when, where, or how the infection was acquired.
2. The district court erred by relying on portions of Dr. Coffman's affidavit before determining whether the challenged portions were admissible.
3. An expert's opinion must be evaluated on its own merits and need not address every opinion stated by an opposing expert to be admissible under Idaho Rule of Evidence 702.
4. Expert testimony may explain that a disease is infectious and identify potential sources of transmission, but expert testimony is not necessarily required to establish how a particular person contracted the disease; factual witnesses may provide the relevant details.

Questions Presented

1. Whether the district court erred by using a differential-diagnosis analysis to determine the admissibility of Nield's expert affidavit.
2. Whether the district court erred by relying on Dr. Coffman's affidavit without first ruling on Nield's objections to its admissibility.
3. Whether the district court erred by using the opposing expert's affidavit as the standard for determining the admissibility of Nield's experts' affidavits.
4. Whether expert medical testimony was required to establish how and where Nield contracted the infections.

Disposition

vacated