348 So.3d 176
La. Ct. App.2022Background
- July 31, 2017: plaintiff Sherry Patrick underwent prophylactic bilateral mastectomy with immediate reconstruction at St. Charles Surgical Hospital; Drs. Ordoyne, Trahan, Sullivan performed surgery; Dr. Melvin Triay was anesthesiologist.
- Plaintiff's husband, Dr. John Patrick (board‑certified anesthesiologist), observed part of the operation as a non‑participant and attested he saw sustained intraoperative hypertension (~180/105).
- After surgery plaintiff suffered permanent vision loss she attributed to the alleged sustained hypertension.
- Medical Review Panel did not credit Dr. Patrick’s observation and concluded records did not show an extended period with systolic >180; plaintiff later retained Dr. Joni Maga (anesthesiologist) who opined defendants breached the standard of care based largely on Dr. Patrick’s observation.
- Trial court denied defendants’ summary judgment (noting credibility issues are for the trier of fact), but later granted defendants’ Daubert/motion in limine to exclude Dr. Maga, finding her methodology flawed because she relied on the husband’s observations over the hospital records.
- Court of Appeal (Fourth Circuit) granted writ, reversed exclusion, holding the trial court impermissibly made a credibility determination reserved for the trier of fact and thus abused its discretion.
Issues
| Issue | Plaintiff's Argument | Defendant's Argument | Held |
|---|---|---|---|
| Whether the trial court properly excluded plaintiff's expert for relying on an eyewitness (husband) whose observation conflicted with medical records | Trial court improperly resolved credibility dispute (husband vs. records); eyewitness account is a valid factual basis for expert opinion | Expert’s methodology unreliable because it privileges the husband’s uncorroborated observation over certified hospital records; expert should be excluded | Reversed: exclusion was an improper credibility determination; admissibility concern goes to the trier of fact, not gatekeeping when reasons are not patently unsound |
| Whether Dr. Maga (anesthesiologist) was qualified to opine on intraoperative blood‑pressure management | As an anesthesiologist, Maga is qualified to opine on blood‑pressure control and related risks | Defendants argued she lacked foundation to opine about surgical management decisions | Trial court accepted qualifications; appellate decision did not sustain exclusion on qualification grounds |
Key Cases Cited
- Daubert v. Merrell Dow Pharmaceuticals, 509 U.S. 579 (U.S. 1993) (trial court must assess whether expert methodology is scientifically valid)
- State v. Foret, 628 So.2d 1116 (La. 1993) (Louisiana adoption of Daubert gatekeeping principles)
- Lirette v. State Ins. Co., 563 So.2d 850 (La. 1990) (credibility determinations are generally for the trier of fact; expert testimony should not be excluded for credibility matters unless reasons are patently unsound)
- Boudreaux v. Bollinger Shipyard, 197 So.3d 761 (La. App. 4 Cir. 2016) (abuse of discretion standard for evidentiary rulings)
- Giavotella v. Mitchell, 289 So.3d 1058 (La. App. 1 Cir. 2019) (the factual basis for an expert’s opinion determines reliability)