Smith v. Bubak
643 F.3d 1137
8th Cir.2011Background
- Velda Smith suffered stroke symptoms on Feb 9, 2006 and was transported to Wagner Community Memorial Hospital.
- Dr. Bubak transferred Velda to Douglas Memorial for a CT scan, then Velda was brought back to Wagner after CT was negative for hemorrhage.
- Plaintiff alleges Dr. Bubak failed to consider or discuss tPA transfer, proximately causing Velda’s death in 2009.
- Three experts testified that Velda would have had a measurable improvement with timely tPA; one opinion valued at ~58% chance of partial recovery.
- Dr. McDowell based his estimate on the 1995 NINDS Study and later on the Zivin Paper; district court found his methods unreliable.
- District court granted summary judgment for Dr. Bubak, excluding McDowell’s testimony under Rule 702.
Issues
| Issue | Plaintiff's Argument | Defendant's Argument | Held |
|---|---|---|---|
| Admissibility of Dr. McDowell's testimony under Rule 702 | Smith argues Zivin is reliable; McDowell’s methods are valid | Bubak contends McDowell relied on flawed methods and is unreliable | District court did not abuse discretion; McDowell's testimony excluded |
| Proximate causation standard under SD law | Loss-of-chance theory governs causation | Traditional proximate cause applies; loss-of-chance abrogated | Court applied traditional proximate cause, not loss-of-chance |
| Relevance of the Zivin Paper to causation | Zivin supports causation by showing 57.3% improvement likelihood | Zivin is methodologically flawed and irrelevant under SD law | Zivin findings deemed irrelevant to traditional proximate cause |
| Use of relative benefit data to prove 'more likely than not' improvement | Relative improvement suffices to show probable benefit | Cannot translate relative benefit to probability of improvement for SD standard | Evidence does not meet traditional proximate-cause standard |
Key Cases Cited
- Marmo v. Tyson Fresh Meats, Inc., 457 F.3d 748 (8th Cir. 2006) (reliability and relevance framework for expert testimony under Daubert)
- Barrett v. Rhodia, Inc., 606 F.3d 975 (8th Cir. 2010) (reliability and relevance standard for expert testimony)
- Dunn v. Nexgrill Indus., Inc., 636 F.3d 1049 (8th Cir. 2011) (abuse-of-discretion review of exclusion of expert testimony)
- Young v. Mem'l Hermann Hosp. Sys., 573 F.3d 233 (5th Cir. 2009) (tPA efficacy standard in proximate-cause analysis)
- Samaan v. St. Joseph Hosp., 755 F. Supp. 2d 236 (D. Me. 2010) (excludes relative-efficacy evidence under traditional proximate cause)
- Ensink v. Mecosta Cnty. Gen. Hosp., 262 Mich. App. 518, 687 N.W.2d 143 (2004) (limits on use of relative efficacy data in proximate-cause analysis)