Richard and Christine Conner appeal the district court’s grant of judgment as a matter of law in favor of Travis County (“the County”) and Travis County Sheriff Terry Keel. The County Attorney’s Office (“CA’s Office”), which represented the County and Keel, cross-appeals the court’s imposition of sanctions against it. We affirm in part and reverse in part.
I
Richard Conner was arrested on an outstanding warrant for a bad check when he attempted to renew his driver’s license at the Department of Public Safety (“DPS”). Hе was held by a DPS deputy until officials from the County Sheriffs Department arrived and brought him to the County’s Central Booking Facility (“CBF”). There, Deputy Sheriff Fred McAfee, who completed intake on Mr. Conner, filled out a medical sheet on Mr. Conner. Mr. Conner told McAfee he had suffered a stroke one month before and that he needed to take medication for his stroke; Mr. Conner was supposed to take the medication every morning and had not yet taken that morning’s dose. McAfee flagged Mr. Conner’s file and placed it in the nurse’s box for him to receive attention.
*796 Mr. Conner alleges that he asked McAf-ee and several others at CBF to be allowed to take his medication, telling them about his condition and that it was worsening. Instead of giving him his medication, they allegedly called him a drunk and told him to stop faking his symptoms. Mr. Conner, who was allowed to make telephone calls throughout this time, eventually telephoned his doctor, who ascertained that Mr.-Conner’s condition was worsening and arranged to have an ambulance take him to the hospital for emergency treatment. Although he ultimately received treatment, he alleges that the delay in obtaining it caused him permanent damage.
The Conners subsequently filed this lawsuit, proceeding to trial against the County, Keel, and McAfee. On the day before the trial finished, the court granted Travis County’s and Keel’s motions for judgment as a matter of law on the Conners’ claims against them for failure to train under 42 U.S.C. § 1983.
The jury rulеd in favor of McAfee. The Conners moved for a new trial and both sides moved for attorney fees. The district court denied all the motions except for the Conners’ motion for attorney fees: the court imposed sanctions of $5,575 against the CA’s Office to cover the Con-ners’ appellate attorney fees for an earlier interlocutory appeal the CA’s Office had filed. The Conners now appeal the court’s ruling on the motions for judgment as a matter of law. Thе CA’s Office cross-appeals the imposition of sanctions.
II
Federal Rule of Civil Procedure 50(a) allows a court to grant judgment as a matter of law when “a party has been fully heard on an issue and there is no legally sufficient evidentiary basis for a reasonable jury to find for that party on that issue.” Fed.R.Civ.P. 50(a). We review a grant of judgment as a matter of law
de novo,
applying the same standard the court below applied.
See McCoy v. Hernandez,
Counties and supervisors are not liable for constitutional violations committed by county employees unless those violations result directly from a municipal custom or policy.
See City of Canton v. Harris,
Deliberate indifference is more than mere negligence.
See Rhyne v. Henderson County,
The Conners concede that County policy requirеd qualified medical staff to be available to treat detainees presenting both emergency and non-emergency conditions. They also concede that County policy required staff to obtain immediate medical treatment for detainees presenting emergency conditions and less immediate treatment for non-emergency conditions. Additionally, they concede that CBF staff had training in first aid and CPR. Finally, they do not dispute several facts: Mr. Conner did not present emеrgency symptoms on arrival or indicate that he was experiencing an emergency; he was still speaking and walking around when he began to complain of symptoms; and he was in the CBF without immediate medical treatment for at most an hour. The Conners premise their failure to train claim on the fact that the County did not train CBF officials to recognize emergency conditions as they developed or to understand the significance of the symptoms and condition which Mr. Conner presented. Their argument is essentially that jail officials should have been trained to recognize that — in spite of Mr. Conner’s apparent non-emergency condition — Mr. Conner required immediate medical attention because of his stroke history, his need for medication, and his subsequent symptoms.
The Conners did not attempt to prove that the County’s failure to train its staff in distinguishing between emergency and non-emergency conditions was deliberately indifferent by showing that prior incidents gave thе County or Keel notice of the need for specific training. Instead, ■ they rely on the single episode with Mr. Conner and on their expert’s statements about the need for more training. We have previously noted the difficulty plaintiffs face in attempting to show deliberate indifference on the basis of a single incident.
See Gabriel v. City of Plano,
Additionally, the Conners did not provide any general evidence about stroke conditions. For example, they did not show stroke incident rates in the general or detainee population from which a jury could infer a need for specific training. Nor did they provide detailed evidence about the consequences (aside from the alleged consequences in this case) of not providing immediate treatment when a person exhibits stroke symptoms or misses their daily mеdication for four or five hours. Finally, their evidence regarding professional and regulatory standards in jails at best only tenuously supports an argument that the County’s training fell below these standards. 1
*798
Instead, the Conners’ showing of a need to train was premised on the testimony of their expert witness, who claimed, without citing underlying data, that detainees with stroke symptoms would present themselves so frequently that County staff should be trained to recognize them. By itself this is unpersuasive. We have previously nоted that plaintiffs generally cannot show deliberate indifference through the opinion of only a single expert,
see Snyder,
Aside from their expert, the Conners presented no evidence that the County or Keel should have known of a risk of harm arising from slowly-diagnosed stroke symptoms, let alone that this risk showed deliberate indifference because it was “so obvious” that the failure to offer specific stroke training was “so likely to result in the violation of constitutional rights.”
City of Canton,
Ill
The CA’s Office cross-appeals the impоsition of sanctions against it. Before trial, the CA’s Office moved for summary judg
*799
ment on various immunity grounds. The court denied the motion and the CA’s Office filed an interlocutory appeal, which caused the district court to stay the trial and which apparently left the court with a vacancy in its trial calender.. Before staying the trial, the court warned the CA’s Office that the appeal lacked merit. After the trial, the court sanctioned the CA’s Office for the appeal by awarding the Con-ners $5,575 for their appellate attorney fees. Although the, court noted the important policy reasons allowing government employees to bring immediate appeals on immunity issues, see,
e.g., Behrens v. Pelletier,
The court imposed sanctions under 28 U.S.C. § 1927 and under its inherent powers.
See
28 U.S.C. § 1927 (allowing sanctions against “[a]ny attorney ... who so multiplies the proceedings in any case unreasonably and vexatiously”);
Chambers v. NASCO, Inc.,
We first consider whether the district court erred by awarding sanctions because it found that the interlocutory appeal was meritless. In
Chambers,
the Supreme Court rejected a
per. se
rule barring a court from sanctioning parties for conduct they take outside its courtroom: “[a]s long as a party receives an appropriate hearing ... the party may be sanctioned for abuses of process occurring beyond the courtroom, such as disobeying the court’s orders.”
Chambers,
We limited
Chambers’s
reach in
Matter of Case,
The state court proceeding in the instant case is completely collateral to the proceedings in bankruptcy court. The conduct of the parties in the state action cannot be said to affect the exercise of the judicial authority of the bankruptcy court or limit the bankruptcy court’s power to contrоl the behavior of parties and attorneys in the litigation before it. Inherent power must arise from the litigation before that court. Although the substantive issue in the state court proceeding is the same, the conduct of the parties in that suit is unconnected to the •present action.
Id. at 1023-24.
Case
does not directly preclude the district court’s sanction award here, as the sanctions directly arose from litigation before the court. Nevertheless, the sanctions do not fit within the examрle of permissible sanctions which
Chambers
provided: actions taken in another forum “in direct contravention of the District Court’s orders.”
Chambers,
Our sister circuits disagree as to whether a district court can sanction a party for filing an interlocutory appeal which lacks merit. The Ninth Circuit reads
Chambers
more broadly than we do.
Compare Western Sys., Inc. v. Ulloa,
The purpose of a court’s sanctioning power is to enable it to ensure its own proper functioning.
See Chambers,
*801
Most notably, of course, the appellate court is generally better qualified to determine whether an appeal lacks merit. This finds еxpression in the Federal Rule of Appellate Procedure allowing only “a court of appeals” to impose “just damages and single or double costs to the appellee” in a frivolous appeal. Fed. R.App. P. 38;
cf. Cooter & Gell v. Hartmarx Corp.,
Additionally, there is the strong policy the district court itself noted of allowing interlocutory appeals of qualified immunity rulings.
See Behrens,
Finally, allowing parties to obtain sanctions from the district court for a frivolous interlocutory appeal would allow a party to raise the sanctions issue before the district court when, as here, it did not rаise that issue before the appellate court. This might in turn discourage otherwise meritorious appeals.
Cf. Cooter & Gell,
Having determined that sanctions on the basis of a frivolous appeal are improper, we must consider whether the district court had any other reason for imposing sanctions. The court identified two additional reasons. First, the court noted the CA’s Office’s history of filing meritless appeals. However, just as it was improper for the court to determine the merits of the instant aрpeal, so was it inappropriate for the court to consider the merits of other appeals absent an imposition of sanctions by us in those appeals.
Second, the court found that the CA’s Office unduly delayed filing its appeal. Although dilatory conduct evincing bad faith might justify sanctions, we do not find support for the district court’s finding of undue delay in the record. The CA’s Office filed its motion for summary judgment before the motion cut-off date, and it filed its interlocutory appeal within twо days of the district’s court ruling. Although the CA’s Office could have filed its motion earlier, the fact that it filed the motion within the time allowed by the court and then promptly appealed does not support a finding that it unduly delayed. 6 *802 Additionally, even if the CA’s Office had unduly delayed in filing the appeal, the appropriate remedy would be to sanction it according to what occurred before the district court, not by awarding the appellee’s appellate attorney feеs.
In sum, the district court relied on an erroneous view of the law in sanctioning the CA’s Office for a meritless appeal, and it lacked evidence to find that the CA’s Office unduly delayed. Accordingly, we find that it abused its discretion in imposing sanctions.
7
Cf. Walker,
TV
We AFFIRM the district court’s grant of judgment as a matter of law to the County and Keel. We REVERSE the court’s award of sanctions to the Conners.
Notes
. Although the Conners’ expert suggested that the County's training did not comply with the Texas Jail Standards, he did not testify that the Standards speсify what training must be given on recognizing emergency conditions. He only stated that: “the standards specify that inmates will receive ... emergency medical care, that they will be screened medically when they are first brought into the jail, and that the screening will be accompanied by a medical person or by a trained officer, and that if there are any emergencies in the process, that they will be referred immediately to the medical department for review.” On cross-examination, he stated that, based on his reading of the Texas Jail Standards, "I would assume that if they are going to do medical screening, then they are either going to be medical personnel or trained officers.”
*798 On cross-examination, the expert was also unable to identify any portion of the American Corrections Association Standards or the National Commission on Correctional Health Care Standards which "set[s] out the degree of medical training officers must have in order to do intake screening.”
. The Conners argue that the district court’s grant of judgment as a matter of law to the County and Keel is inconsistent with its earlier denial (affirmed by us on appeal) of their motion for summary judgment. This position lacks merit. Although we have observed that the standards for determining whether summary judgment should be granted are the same as those for determining when judgment as a matter of law is appropriate,
see Rhodes v. Guiberson Oil Tools,
. The County Attorney’s Office attempts to distinguish
Chambers
by noting that in
Chambers
the appellate court first determined that the appeal was frivolous and sanctionable.
See Chambers,
. Most notably, of course, the court could have set an earlier motion cutoff date.
. We only hold that a district court may not sanction based on its determination that an appeal is frivolous. A district court can still calculate sanctions if we determine that an appeal is frivolous and remand to the district court to award justifiable damages, costs, or fees. See, e.g., Olympia Co., Inc. v. Celotex Corp., 771 F.2d 888, 894 (5th Cir.1985) (granting the appellee’s request for appellate expenses in light of the frivolity of the appeal, but remanding for the district court to determine the amount incurred on the appeal).
. The court also suggested the CA’s Office’s has previously used appeals as a delay tactic by filing "similarly meritless interlocutory appeals just prior to trial.” Even if it was proper for the court to look to conduct which did not occur before it as a means of evaluating the conduct which did occur before it,
cf. Travelers Ins. Co. v. St. Jude Hosp. of Kenner, La., Inc.,
. Because we reverse the sanctions award on this grounds, we do not reach the CA's Office's alternative arguments that we should reverse because it was given insufficient notice about sanctions or because § 1927 applies only to individual attorneys and not to offices.
