UNPUBLISHED

                       UNITED STATES COURT OF APPEALS
                           FOR THE FOURTH CIRCUIT


                                       No. 18-2191


JOHN WALTER RIGGINS, Administrator of the Estate of NELLIE DONITHAN
RIGGINS,

             Plaintiff – Appellant,

v.

SSC YANCEYVILLE OPERATING COMPANY, LLC, d/b/a Brian Health Center
& Rehabilitation/Yanceyville,

             Defendant – Appellee,

and

SAVASENIORCARE, LLC; LIVING CENTERS - SOUTHEAST, INC.,

             Defendants.


Appeal from the United States District Court for the Middle District of North Carolina, at
Greensboro. N. Carlton Tilley, Jr., Senior District Judge. (1:16-cv-01213-NCT-JLW)


Argued: October 29, 2019                                      Decided: January 15, 2020


Before GREGORY, Chief Judge, and WYNN and THACKER, Circuit Judges.


Affirmed by unpublished opinion. Judge Wynn wrote the opinion in which Chief Judge
Gregory and Judge Thacker joined.
ARGUED: Jonathan Paul Ward, PINTO COATES KYRE & BOWERS, PLLC,
Greensboro, North Carolina, for Appellant. Michael E. Phillips, HAGWOOD AND
TIPTON, PC, Ridgeland, Mississippi, for Appellee. ON BRIEF: Paul D. Coates, Adam
L. White, PINTO COATES KYRE & BOWERS, PLLC, Greensboro, North Carolina, for
Appellant. Carl Hagwood, Jonathan Williams, HAGWOOD AND TIPTON, PC,
Hillsborough, North Carolina, for Appellee.




                                       2
WYNN, Circuit Judge:

       In this medical malpractice case, Plaintiff-Appellant John Walter Riggins,

administrator of the estate of Nellie Riggins (“Ms. Riggins”), appeals rulings of the U.S.

District Court of the Middle District of North Carolina (1) granting summary judgment in

favor of Defendant-Appellee SSC Yanceyville Operating Company, LLC on the grounds

that Plaintiff failed to offer sufficient causation testimony and (2) striking portions of a

supplementary affidavit submitted by Plaintiff’s expert, Dr. Carol Rupe, as inconsistent

with her prior deposition testimony. For the reasons set forth below, we conclude the

district court did not err in granting summary judgment and did not abuse its discretion in

striking conflicting portions of the affidavit.

       Accordingly, we affirm the district court on all issues.

                                                  I.

                                              A.

       In 2007, Ms. Riggins, who suffered from Alzheimer’s disease, entered Defendant’s

nursing facility as a patient. Seven years later, while still in Defendant’s care, Ms. Riggins

was diagnosed with oropharyngeal dysphagia, a condition which causes difficulty

swallowing liquids and foods. Because individuals with this disorder may aspirate (inhale)

thin liquids and foods, Ms. Riggins was prescribed “nectar-thickened liquids.” J.A. 14.

       On September 3, 2014, Ms. Riggins experienced a sudden shortness of breath.

Defendant’s employees conducted a chest X-ray, which indicated Ms. Riggins was

suffering congestive heart failure. Ms. Riggins was rushed to the emergency room at

Danville Regional Medical Center. Upon arrival, a physician determined that Ms. Riggins

                                                  3
“was septic due to possible pneumonia or urinary tract infection.” J.A. 13. Further X-rays

revealed bibasilar atelectasis (partial collapse of the lower lungs). Ms. Riggins’s family

then placed her on comfort care only, opting to forego heroic treatment. Ms. Riggins

passed away from sepsis on September 8, 2014.

                                              B.

       Following Ms. Riggins’s death, Plaintiff filed a medical malpractice claim under

diversity jurisdiction, alleging that Defendant maintained Ms. Riggins on a thin liquid diet,

causing her to aspirate thin liquids, develop aspiration pneumonia, become septic, and die.

Plaintiff put forward Dr. Carol Rupe as a medical causation expert. Dr. Rupe’s written

report stated it was her opinion “within a reasonable degree of medical certainty” that

Defendant breached its standard of care to Ms. Riggins and that this breach in turn caused

Ms. Riggins’s death. J.A. 133. Specifically, Dr. Rupe stated:

       It is my opinion within a reasonable degree of medical certainty that the care
       providers at the Brian Center did breach the standard of care given to Ms.
       Nellie Riggins . . . . [I]t is my opinion that more likely than not the breach in
       the standard of care by the staff at The Bryan [sic] Center in not placing
       thickener in Ms. Riggins[’s] thin liquids caused Ms. Nellie Riggins to suffer
       an acute aspiration on September 3, 2014 which caused the development of
       an Aspiration Pneumonia which ultimately led to her demise.

J.A. 133.

       At her deposition, however, Dr. Rupe offered varying answers as to whether Ms.

Riggins aspirated thin liquids. Dr. Rupe stated that Ms. Riggins more likely than not

aspirated thin liquids but declined to explain how certain she was in that opinion:

       Q: . . . [Y]our opinion is she aspirated?

       A: Correct.

                                              4
       Q: You don’t really know why? You can’t say to a reasonable degree of
       certainty what she aspirated on, can you?

       A: More likely than not with not having any evidence that her fluids were
       being thickened, it would be a thin liquid, would be the more likely than not
       candidate for her aspirating.

J.A. 72–73.

       Q: Now, help me understand, your opinion is that on September the 3rd at
       some time in the late afternoon Ms. Riggins aspirated?

       A: Correct.

       Q: We don’t know on what?

       A: No, we don’t because, to my knowledge, the lunch wasn’t even listed in
       the tracker for the day.

J.A. 79. Dr. Rupe further acknowledged that Ms. Riggins could have aspirated several

things, including snacks, fluid, foods, or her own secretions:

       Q: Okay. But it is your opinion that on September 3rd of 2014, Ms. Riggins
       aspirated on either lunch or having been provided liquids that were thin, not
       thickened?

       A: Correct. Or a snack that she received because she was getting some snacks
       in between meals, also.

J.A. 71–72.

       Q: You believe that Ms. Riggins aspirated, but you don’t know on -- on what?

       A: I don’t know which fluid, no, or food.

       Q: Or food. Okay. Can residents aspirate on foods that are pureed?

       A: They can. It’s less likely, but they can.

       Q: And I think we -- we touched on this. They can also aspirate on their own
       secretions?

                                              5
       A: Correct.

J.A. 102. When asked again to weigh the potential items aspirated, Dr. Rupe identified

thin liquids as the most likely candidate, but agreed with Defendant’s counsel that she could

not make that statement to a reasonable degree of medical certainty:

       Q: So - - the last sentence in your report says [“]the Brian Center in not
       placing thickener in Ms. Riggins’ thin liquids caused Ms. Nellie Riggins to
       suffer an acute aspiration on September 3rd, 2014, which caused the
       development of an aspiration pneumonia which ultimately led to her
       demise,[”] that statement’s not entirely correct because you don’t know what
       caused her to aspirate?

       A: Again, it’s whatever she was taking in - -

       Q: Food or fluid? You’ve already said it twice.

       A: True, true. But the most likely candidate would be the liquids.

       Q: But you can’t say that to a reasonable degree of medical certainty?

       A: No.

J.A. 107–08. Dr. Rupe’s refusal to state her opinion to a reasonable degree of medical

certainty was then repeated for the court reporter with no objection. At the conclusion of

Defendant’s questioning, Plaintiff’s counsel did not ask Dr. Rupe any questions. Although

Dr. Rupe was required to review and, if necessary, correct her deposition testimony

pursuant to North Carolina Rule of Civil Procedure 30(e), she made no such corrections.

N.C. R. Civ. P. 30(e).

       Defendant subsequently moved for summary judgment, arguing Plaintiff could not

show, by way of Dr. Rupe’s expert testimony, that Defendant’s conduct caused Ms.

Riggins’s injury to “a reasonable degree of medical certainty.” Dist. Ct. Dkt. No. 42 at 3.

                                             6
       In his opposition to Defendant’s motion for summary judgment, Plaintiff submitted

an affidavit from Dr. Rupe stating, in relevant part:

       7.     Certainty means one hundred percent, or close to it, to me. Without
       having witnessed Ms. Riggins actually aspirating, I would never say I was
       certain as to what she aspirated.

       8.     During my deposition, I stated both that it was more likely than not
       that Ms. Riggins aspirated on a thin liquid and that I could not say with
       certainty that she aspirated on a thin liquid. These opinions are within a
       reasonable degree of medical causation and probability.

       9.     Based on my review of the records in this case, it was and remains my
       opinion that Ms. Riggins, more likely than not, aspirated on a thin liquid. It
       is my further opinion that this aspiration led to aspiration pneumonia and Ms.
       Riggins’s death. These opinions are within a reasonable degree of medical
       causation and probability.

J.A. 165. Defendant moved to strike this affidavit as contradicting Dr. Rupe’s prior

deposition testimony. The district court agreed and struck portions of Dr. Rupe’s affidavit

constituting “bona fide inconsistencies with her deposition testimony, such as when she

characterizes her opinion that it is more likely than not the thin liquids that caused Riggins

to aspirate as being within a reasonable degree of medical causation and probability.”

Riggins v. SSC Yanceyville Operating Co., LLC, No. 1:16-CV-1213, 

,

at *5 (M.D.N.C. Sept. 13, 2018). The district court also granted Defendant’s summary

judgment motion, finding Dr. Rupe’s testimony absent the affidavit did not rise to the

degree of medical certainty required for the testimony to reach the jury. 

       Plaintiff timely appealed, arguing that the district court (1) erred in granting

summary judgment because Dr. Rupe’s testimony proffered sufficient causation evidence

and (2) abused its discretion in striking portions of Dr. Rupe’s affidavit as contradictory.


                                              7
Appellant’s Br. at 1, 6. We hold that the district court properly granted summary judgment

and did not abuse its discretion in striking conflicting portions of the affidavit.

                                              II.

       Because we conclude below that the district court properly struck portions of Dr.

Rupe’s affidavit, we first analyze whether the district court properly granted summary

judgment on the record absent those stricken portions. We find that it did.

       We review summary judgment decisions de novo. Hodgin v. UTC Fire & Sec. Ams.

Corp., 

, 252 (4th Cir. 2018). Summary judgment is only appropriate if “there

is no genuine dispute as to any material fact and the movant is entitled to judgment as a

matter of law.” 

R. Civ. P. 56(a)). A dispute is genuine if “a reasonable

jury could return a verdict for the nonmoving party.” Libertarian Party of Va. v. Judd, 

, 313 (4th Cir. 2013) (quoting Dulaney v. Packaging Corp. of Am., 

,

330 (4th Cir. 2012)). While we view evidence in the light most favorable to the nonmoving

party, more than a scintilla of evidence is required and mere “[c]onclusory or speculative

allegations” are insufficient to withstand summary judgment. 

(alteration in original) (quoting Thompson v. Potomac Elec. Power Co., 

, 649

(4th Cir. 2002)).

       When a federal court is exercising diversity jurisdiction, “the substantive elements

of a medical malpractice suit . . . are all questions to be determined by state law.”

Fitzgerald v. Manning, 

, 346 (4th Cir. 1982). In North Carolina, a medical

malpractice plaintiff must offer evidence establishing: “(1) the applicable standard of care;

(2) a breach of such standard of care by the defendant; (3) [that] the injuries suffered by

                                               8
the plaintiff were proximately caused by such breach; and (4) the damages resulting to the

plaintiff.” Hawkins v. Emergency Med. Physicians of Craven Cty., PLLC, 

,

162 (N.C. Ct. App. 2015) (quoting Purvis v. Moses H. Cone Mem’l Hosp. Serv. Corp., 

, 383 (N.C. Ct. App. 2006)). Because medical issues are typically complex,

expert testimony is required to establish causation in North Carolina. 

       In this case, the parties only dispute the sufficiency of Dr. Rupe’s causation

testimony. While North Carolina law sets the substantive elements of medical malpractice

cases arising through diversity jurisdiction, “whether there is sufficient evidence to create

a jury issue” regarding the element of causation “is controlled by federal rules.” 

. Under binding Fourth Circuit precedent, for the question of causation to

reach the jury in a medical malpractice case, a medical expert’s causation opinion must

“rise[] to the level of a ‘reasonable degree of medical certainty’ that it was more likely that

the defendant’s negligence was the cause than any other cause.” 

see also Owens

by Owens v. Bourns, Inc., 

, 149–50 (4th Cir. 1985) (citing 

).

       This evidentiary standard is “not merely one of semantics.” 

(quoting McMahon v. Young, 

, 535 (Pa. 1971)). It is essential given the

jury’s reliance on expert testimony in medical malpractice cases. As we explained in

Fitzgerald, “[t]he opinion of a medical expert is evidence” and “if the plaintiff’s medical

expert cannot form an opinion with sufficient certainty so as to make a medical judgment,

there is nothing on the record with which a jury can make a decision with sufficient

certainty so as to make a legal judgment.” 

(quoting 

535); see also Blake By & Through Blake v. Juskevich, 

, *3 (4th Cir. 1993)

(per curiam) (“If a doctor serving as an expert witness cannot state his medical opinions

with a reasonable degree of certainty, then a jury should not be allowed to rely upon them

in reaching its decision. Expert witnesses’ opinions are critical in medical malpractice

cases; a direct, unequivocal expression of their opinion is necessary to constitute legally

competent proof.”). This is a “stringent standard” that “aids in ensuring that when expert

opinion is taken as fact by the jury, it is relying on legally competent evidence.” 

, at *2. To that same aim, “medical opinion that is inconsistent with the

entirety of an expert’s testimony is not sufficient to raise a jury question.” 

.

       Nor must the expert recite the magic words “reasonable degree of medical certainty”

for his or her testimony to reach a jury; rather, the expert’s testimony as a whole must

demonstrate his or her opinion is held to a reasonable degree of medical certainty. See

, *3 (finding the absence of the words “reasonable degree of

medical certainty” immaterial to the certainty determination); see also Jordan v. Iverson

Mall Ltd. P’ship, No. GJH-14-37, 

, at *5–7 (D. Md. May 25, 2018)

(“[T]here is no requirement that an expert use any ‘magic words’ for their opinion to be

admissible. However, the expert’s testimony taken as a whole must still demonstrate that

the expert is confident in his or her opinion to a reasonable degree of certainty . . . .”).

       Our precedents in Fitzgerald, Blake, and Owens are instructive in determining

whether Dr. Rupe testified to a reasonable degree of medical certainty.



                                              10
       In Fitzgerald, we reviewed the “entire substantive evidence of causation” to

determine the sufficiency of the expert’s causation opinion. 

–

56. Because the expert explicitly and repeatedly refused to state that he held his causation

opinion—that defendant’s alleged negligence during a medical operation more likely than

not caused plaintiff’s lung infection—to a reasonable degree of medical certainty, we

affirmed a directed verdict for the defendant. 

       In Blake we similarly affirmed a directed verdict because the expert’s testimony did

not rise to a reasonable degree of medical 

, *3. During

plaintiff’s labor, defendant declined to perform a C-section, instead opting to use a forceps

procedure to “hasten delivery,” and plaintiff’s child was born with a defect. 

*1. When questioned, the expert stated that, were a C-section performed, it was “[m]ore

probable than not, th[e] injury would not have occurred.” 

*2. However, the

expert repeatedly noted that he could not “say [this] with certainty.” 

that

because the expert could not couch his opinion in terms of a reasonable degree of certainty,

“these responses f[e]ll below the standard required by this court” and it would be improper

to allow a jury to consider the expert’s opinion as “legally competent proof.” 

*2–3. We further explained, “[t]his is not a case where an expert witness fails to say the

magic words ‘reasonable degree of medical certainty,’ but a situation where a medical

expert witness was not sure of his conclusions.” 

*3.

       Finally, in Owens, a defective design case, plaintiffs alleged their infant’s blindness

was caused by a single incident in which defendant’s assisted breathing machine exposed

the infant to excessive oxygen. 

, 148. Plaintiffs’ causation experts

                                             11
opined this single exposure was more probably than not the event that caused the infant’s

blindness. 

experts acknowledged that the infant exhibited high blood

oxygen levels on multiple occasions unrelated to the incident and received high

concentrations of oxygen from other sources. 

Noting these contradictory

facts, we held that although the experts “asserted a reasonable degree of medical certainty”

in their written report, the presence of multiple potential sources of oxygen did not justify

that certainty because “medical opinion that is inconsistent with the entirety of an expert’s

testimony is not sufficient to raise a jury question.” Id. (citing 

).

                                              III.

       These cases set forth two distinct requirements for a medical expert’s causation

testimony to reach a jury: (1) the likelihood that defendant’s conduct caused plaintiff’s

injury (which must be more probable than not), and (2) whether the expert expressed this

“more likely than not” opinion to a reasonable degree of medical certainty. See, e.g.,

–50 (first explaining that an expert must explain that the

defendant’s negligence was “more likely” the cause than any other cause and then stating

“[m]oreover, in order to qualify on causation, the opinion testimony of the expert may not

be stated in general terms but must be stated in terms of a ‘reasonable degree of medical

certainty’” (citations omitted)); 

, *3.

       The parties do not dispute that Dr. Rupe’s testimony meets the first prong, and the

record shows she consistently opined that Ms. Riggins more likely than not aspirated thin

liquids. However, a reading of the entire record shows Dr. Rupe did not hold this opinion

to a reasonable degree of medical certainty.

                                               12
                                             A.

       Like the experts in Fitzgerald and Blake, Dr. Rupe acknowledged at deposition that

she could not single out a particular cause of aspiration with a reasonable degree of medical

certainty. Instead, she twice affirmatively declined to adopt this standard when prompted.

See 

; 

–56; 

, *3.

As such, Dr. Rupe’s testimony is facially inadequate.

       Plaintiff argues this “misconstrued soundbite” is insufficient to warrant a grant of

summary judgment. Appellant’s Br. at 8. But an examination of the substance of Dr.

Rupe’s entire testimony reveals she lacked confidence in her theory of causation. See

–56 (examining the “entire substantive evidence of causation”).

Not only did Dr. Rupe state she could not testify with a reasonable degree of certainty,

nowhere in her deposition testimony did she state or otherwise demonstrate the degree of

certainty she could attach to her causation opinion. In fact, when first asked how certain

she was, Dr. Rupe merely restated her conclusion that thin liquids were the most likely

culprit.

       Further, Dr. Rupe repeatedly acknowledged that she was unsure what substance Ms.

Riggins aspirated, instead candidly admitting that Ms. Riggins could have aspirated food,

thickened liquids, or her own secretions. When asked about those alternative causes, Dr.

Rupe could not articulate any reason why thin liquids would have been the most likely

culprit, again offering conclusory statements that they were. See 

–

51 (finding expert testimony inadequate when, despite claiming to hold opinions to



                                             13
“reasonable degree of medical certainty,” experts acknowledged other possible causes and

could not explain why their preferred cause was most likely).

       Consequently, “[t]his is not a case where an expert witness fail[ed] to say the magic

words.” 

, *3. Instead, this is a case where the expert demonstrated

that she was not sure of her opinions, declined to consistently and confidently support or

explain them, and, when confronted, expressly rejected the required standard of certainty.

See 

causation testimony was thus insufficient to reach the jury.

                                             B.

       Plaintiff urges us to consider Day v. Brant, 

(N.C. Ct. App. 2012),

for the proposition that Dr. Rupe’s level of certainty in her causation opinion is a “matter[]

of evidentiary weight, to be weighed by the jury.” Appellant’s Br. at 12. Plaintiff’s reliance

on Day is improper for two reasons.

       First, the decision in Day was based on state law. Under binding precedent in

Fitzgerald and Owens, “the sufficiency of the evidence to create a jury question is a matter

governed by federal law,” not state law. 

(citing 

). As we explained in those cases, the court must evaluate the expert’s level of

certainty in his or her opinion testimony before a jury may rely on it. See 

; 

. As such, the degree of certainty with which an expert

expresses his or her opinion is not purely a jury question in this Circuit.

       Second, Day is factually distinguishable. In Day, the court found medical causation

testimony sufficient where the expert opined that he believed, to a reasonable degree of

medical certainty, that defendants’ actions more likely than not caused the death of a victim

                                             14
of a car accident but expressed uncertainty as to an exact survival rate percentage had the

victim received different medical 

–50. Unlike Day, the

testimony here is not slightly uncertain on an ancillary question. Rather, Dr. Rupe’s

causation testimony, taken as a whole, is not stated to a reasonable degree of medical

certainty.

                                             C.

       Plaintiff alternatively argues (again citing Day, as well as other North Carolina

cases) that Dr. Rupe’s testimony that Ms. Riggins “more likely than not” aspirated thin

liquids suffices to demonstrate a reasonable degree of medical certainty in her opinion.

Appellant’s Br. at 12. This interpretation conflicts with Fitzgerald, Owens, and Blake. As

already discussed, those cases require: (1) that the expert opine that the breach in the

standard of care more probably than not caused the defendant’s injuries and (2) that opinion

be expressed to a reasonable degree of medical certainty. See 

–

50; 

, *3.

       Dr. Rupe’s testimony that aspirating thin liquids was the most likely cause of Ms.

Riggins’s death addressed the first requirement. However, as Blake illustrates, testimony

that the alleged negligence was the “more probable than not” cause of plaintiff’s injury

alone is not enough. The expert’s testimony must be stated “with sufficient certainty.”

–51 (explaining that a reasonable degree of medical certainty

requires specificity and that “the only evidence offered was that [the injury] was ‘probably’

caused [by defendant’s breach,] and that is not enough” (quoting 

)); see also 

, *3. As described above, Dr. Rupe affirmatively

                                             15
disclaimed the appropriate certainty standard and declined to stand by or explain her

opinion that thin liquids were the most likely item aspirated. Her testimony therefore

cannot satisfy the second inquiry. See 

–51.

       In sum, taken together and considered in the light most favorable to Plaintiff, Dr.

Rupe’s explicit refusal to state her opinion to a reasonable degree of medical certainty, her

wavering answers as to whether and why thin liquids were the most likely culprit, and her

failure to demonstrate what degree of certainty she actually possessed in her causation

opinions are insufficient to ensure that if her “expert opinion is taken as fact by the jury, it

is relying on legally competent evidence.” 

, *3; see also 

–51. Dr. Rupe’s expert testimony on causation is thus insufficient to

withstand summary judgment.

       For these reasons, we hold that summary judgment was properly granted.

                                              IV.

       Turning now to whether the district court abused its discretion in striking portions

of Plaintiff’s affidavit as contradictory, we hold that it did not.

                                               A.

       As a threshold matter, Defendant contends Plaintiff waived his argument that Dr.

Rupe’s affidavit is consistent with her deposition because he did not argue the absence of

a “bona fide inconsistency” between the affidavit and the deposition below. Appellee’s

Br. at 24, 29–31. We do not consider an issue raised for the first time on appeal unless

refusing to do so “would be plain error or result in a fundamental miscarriage of justice.”

Muth v. United States, 

, 250 (4th Cir. 1993).

                                               16
        However, Plaintiff’s opposition to Defendant’s motion to strike articulated his

reasoning why the affidavit and the deposition were consistent: because Dr. Rupe’s

affidavit merely detailed and lent context to her deposition testimony. See Dist. Ct. Dkt.

No. 51 at 2 (“[V]iewing the deposition as a whole, and reading it with the actual language

of her Affidavit, makes clear that Dr. Rupe’s opinions have remained the same across her

written report, her deposition testimony, and her Affidavit.”). Plaintiff advances the same

argument on appeal. See Appellant’s Br. at 18–20 (arguing that there “was no clear,

unambiguous, or blatant contradiction between Dr Rupe’s deposition testimony and her

affidavit” and that the affidavit simply lent context to her earlier testimony). As such,

Plaintiff’s challenge to the district court’s decision to strike is properly before us.

                                               B.

       We review a district court’s decision to strike portions of an affidavit for abuse of

discretion and the underlying factual determinations for clear error. Evans v. Techs.

Applications & Serv. Co., 

, 962 (4th Cir. 1996). When reviewing for an abuse

of discretion, “this Court may not substitute its judgment for that of the district court; rather,

we must determine whether the court’s exercise of discretion, considering the law and the

facts, was arbitrary or capricious.” United States v. Banks, 

, 742–43 (4th Cir.

2007) (quoting United States v. Mason, 

, 1289 (4th Cir. 1995)). Accordingly,

abuse of discretion is a very deferential standard of review, and we may act “only when

the decision could not ‘have been reached by a reasonable jurist,’ or when we may call it

‘fundamentally wrong,’ ‘clearly unreasonable, arbitrary, or fanciful.’” Brown v. Nucor



                                               17
Corp., 

, 928 (4th Cir. 2015) (quoting Bluestein v. Cent. Wis. Anesthesiology,

S.C., 

, 957 (7th Cir. 2014)).

        It is a “long-standing principle that a party against whom summary judgment is

sought cannot create a jury issue by identifying discrepancies in his own account of the

facts.” Spriggs v. Diamond Auto Glass, 

, 185 n.7 (4th Cir. 2001) (citing

Rohrbough v. Wyeth Labs., Inc., 

, 975 (4th Cir. 1990)); see also Williams v.

Genex Servs., LLC, 

, 110 (4th Cir. 2015) (“It is well-settled that a plaintiff

may not avoid summary judgment by submitting contradictory evidence. To do so ‘would

greatly diminish the utility of summary judgment as a procedure for screening out sham

issues of fact.’” (quoting Barwick v. Celotex Corp., 

, 960 (4th Cir. 1984))).

        Conflicting versions of a medical expert’s testimony warrant caution because they

“may not represent the considered opinion of the doctor himself, but rather an effort on the

part of the plaintiffs to create an issue of fact.” 

. However, to

strike portions of an affidavit for this reason “there must be a bona fide inconsistency”

between the prior deposition testimony and the affidavit. 

n.7. No

such inconsistency exists when the affidavit “merely detail[s] and lend[s] context” to the

prior testimony, 

n.6, or offers information “patently outside the scope

of the [deposition] questioning.” 

n.7. Rohrbough is instructive

here.

        In Rohrbough, a products liability case, the defendant’s medical expert refused to

directly opine as to whether defendant’s vaccine caused plaintiff’s condition, instead

stating the plaintiff’s symptoms “were consistent” with those seen in “literature to be

                                             18
associated with a reaction to [the 

–75. However, in response to

plaintiff’s motion for summary judgment, the same expert submitted an affidavit stating

that the vaccine “caused [plaintiff’s] neurological injuries.” 

We noted the

expert’s deposition testimony did not meet the required standard of causation for purposes

of summary judgment, while the affidavit did. 

contrast did not present

the district court with a genuine issue of material fact, but a choice of which version of the

expert’s testimony was correct, we found the inconsistency significant and struck the

affidavit as a likely sham. 

affidavit creates a similar inconsistency. At various points in her

deposition, Dr. Rupe admitted that she did not know what Ms. Riggins aspirated,

acknowledged that Ms. Riggins could have aspirated food, thickened liquids, or her own

secretions, and opined that thin liquids were the most likely candidate. However, when

pressed, Dr. Rupe twice acknowledged that she could not state to a reasonable degree of

medical certainty that thin liquids were more likely than not the cause of Ms. Riggins’s

aspiration. Following this explicit disclaimer of the relevant standard, she did not articulate

any standard by which to measure her theory of causation. Yet, in in her affidavit, Dr.

Rupe presented a new measure: “a reasonable degree of medical causation and

probability.” J.A. 165–66.

       Dr. Rupe did not explain the meaning of that term. If she meant “a reasonable

degree of medical certainty,” then her affidavit flatly contradicts her deposition testimony,

where she twice expressly disavowed that standard. See Rohrbough, F.2d at 976.



                                              19
       If not, then her affidavit introduces a new and undefined metric, one that does not

“merely detail and lend context” to her deposition testimony. 

n.6.

At deposition, Dr. Rupe was asked a straightforward question: whether she could state her

causation opinion to a reasonable degree of medical certainty. She gave an equally

unambiguous answer: no. The stricken portion of Dr. Rupe’s affidavit does not lend

context to Dr. Rupe’s unequivocal denial of the requisite degree of certainty. Instead, it

puts forward a new and undefined standard. And as the district court properly noted, Dr.

Rupe only introduced this new standard after Defendant moved for summary judgment,

after Plaintiff’s counsel failed to rehabilitate Dr. Rupe, and after Dr. Rupe declined to

change her testimony via North Carolina Rule of Civil Procedure 30(e). Riggins, 

, at *4–5; see 

(considering timing of subsequent

affidavit in determining it to be a sham); McLaurin v. E. Jordan Iron Works, Inc., No. 5:08-

CV-89-F, 

, at *6 (E.D.N.C. Oct. 27, 2009) (finding sham affidavit

when expert claimed to be unable to articulate minimum inspection standards at deposition

but later submitted affidavit setting forth such standards).

       In striking portions of Dr. Rupe’s affidavit as inconsistent with her deposition, the

district court properly considered the above factors, noting that Dr. Rupe explicitly

disclaimed the appropriate standard, failed to correct her testimony until faced with

summary judgment, and then introduced a vague, competing standard. Riggins, 

, at *4–5. The district court, forced to choose between two versions of Dr. Rupe’s

testimony as to her level of certainty, granted in part the motion to strike. See id.;

–77. Given the district court’s consideration of the above facts

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and law, its decision is neither irrational nor so “clearly unreasonable” as to warrant a

finding of abuse of discretion. See 

.

       We therefore conclude that the district court did not abuse its discretion in striking

portions of Dr. Rupe’s affidavit.

                                              V.

       In conclusion, we affirm the district court as to all issues.

                                                                                AFFIRMED




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