                    COURT OF APPEALS OF VIRGINIA


Present:    Judges Baker, Elder and Fitzpatrick


GARY R. CHILDRESS

v.          Record No. 2817-96-3          MEMORANDUM OPINION *
                                               PER CURIAM
GARY CHILDRESS TRUCKING                      JUNE 10, 1997
AND
NATIONAL SURETY CORPORATION


         FROM THE VIRGINIA WORKERS' COMPENSATION COMMISSION
            (John A. Martin; Browning, Lamie & Sharp, on
            brief), for appellant.

            (Monica L. Taylor; Melissa Amos Young;
            Gentry, Locke, Rakes & Moore, on brief), for
            appellees.



     Gary R. Childress (claimant) contends that the Workers'

Compensation Commission (commission) erred in finding that he

failed to prove he sustained an injury by accident arising out of

his employment on August 18, 1995.    Upon reviewing the record and

the briefs of the parties, we conclude that this appeal is

without merit.   Accordingly, we summarily affirm the commission's

decision.   Rule 5A:27.

     On appeal, we view the evidence in the light most favorable

to the party prevailing below.     R.G. Moore Bldg. Corp. v.

Mullins, 10 Va. App. 211, 212, 390 S.E.2d 788, 788 (1990).       In

PYA/Monarch and Reliance Ins. Co. v. Harris, 22 Va. App. 215, 468

S.E.2d 688 (1996), we held:
            In cases in which the claimant alleges an
     *
      Pursuant to Code § 17-116.010 this opinion is not
designated for publication.
          injury by accident resulting from an
          employment-related risk, "[a] 'critical link'
          must exist between the conditions of the
          workplace and the injury in order for the
          injury to qualify as 'arising out of' the
          employment." In proving the "arising out of"
          prong of the compensability test, a claimant
          has the burden of showing that "'there is
          apparent to the rational mind upon
          consideration of all the circumstances, a
          causal connection between the conditions
          under which the work is required to be
          performed and the resulting injury.'"


Id. at 221-22, 468 S.E.2d at 691. 1   "Whether an injury arises out

of the employment is a mixed question of law and fact and is

reviewable by the appellate court."    Plumb Rite Plumbing Serv. v.

Barbour, 8 Va. App. 482, 483, 382 S.E.2d 305, 305 (1989).

However, unless we conclude that claimant proved, as a matter of

law, that his employment caused his injury, the commission's

finding is binding and conclusive on appeal.    Tomko v. Michael's

Plastering Co., 210 Va. 697, 699, 173 S.E.2d 833, 835 (1970).

     In denying claimant's application, the commission relied

upon PYA/Monarch and Department of Transp. v. Mosebrook, 13 Va.

App. 536, 413 S.E.2d 350 (1992), and found as follows:
            We find no credible evidence in this case
          that the claimant's work or work environment
          caused or contributed to the condition that
          precipitated the truck accident, nor has he
          shown that it resulted from a personal
          idiopathic problem that was manifest as he
          drove the vehicle. Claimant's argument on
          review that the heat of the day and his work
          on the vehicle only shortly before the
          accident "demonstrates by preponderance that
     1
      In an unexplained accident case, the claimant must also
prove a causal connection between the employment and the
accident. PYA/Monarch, 22 Va. App. at 224, 468 S.E.2d at 692.



                                 2
          the claimant suffered from a heat related
          blackout" is mere speculation unsupported by
          medical evidence. This raises only a
          possible link, but evidence that shows a mere
          possibility that the accident resulted from a
          work related condition "does not constitute
          'credible evidence' to support an award of
          compensation."


     The record supports the commission's findings.   No medical

evidence established to a reasonable degree of medical certainty

that an idiopathic condition or a risk or hazard of claimant's

employment caused him to become dizzy or to lose consciousness,

resulting in his losing control of his truck and striking a tree.

Dr. Clinton Sutherland's discharge summary indicated that

claimant suffered a "[n]ear syncope, unknown etiology, likely

heat exhaustion."   Drs. Matthew Wood, Jr. and Jim C. Brasfield

did not render any opinion with respect to the cause of

claimant's dizziness and resulting accident.   Dr. Michael A.

Passidomo noted his impression as "[s]yncope, etiology to be

determined."
     In the absence of any persuasive medical evidence

establishing the cause of claimant's dizziness and/or accident,

the commission, in its role as fact finder, was entitled to give

little probative weight to claimant's speculation that the heat

and working on his truck shortly before the accident caused him

to become dizzy and lose control of his truck.

     Based upon this record, we hold that claimant failed to

prove as a matter of law that his injury arose out of his

employment.



                                 3
For the reasons stated, we affirm the commission's decision.

                                                  Affirmed.




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