Marc Hayes

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STUDY OBJECTIVE To assess the ability of parents to estimate their children's weight. METHODS We assembled a convenience sample of children, newborn to 5 years, who presented to the ED of a tertiary care hospital. Each child's mother or father was asked to estimate the child's weight as accurately as possible. The triage nurse then weighed the child on an(More)
It has been argued that surgery is a form of psychological stress, and that the response to it should therefore be modifiable by psychological means. To test this hypothesis, we assessed the effect of preoperative relaxation instructions on endocrine, cardiovascular, and subjective responses in 21 patients undergoing minor abdominal surgery. Controls (N =(More)
OBJECTIVES This study examined whether unrestrained left rear-seat passengers increase the risk of death of belted drivers involved in serious crashes with at least one fatality. METHODS The information from every fatal crash in the United States between 1995 and 2001 was analyzed. Variables such as point of impact, restraint use, seat position, vehicle(More)
The solution properties of saliva and its role in conditioning both the substrate and the bacterial surface have been investigated with regard to the attachment of oral streptococci to hydroxyapatite surfaces. Saliva from eight subjects was used and the attachment of three organisms, Streptococcus mutans strains FA-1 (serotype b) and KPSK2 (serotype c) and(More)
With the passage of the Omnibus Reconciliation Act of 1993, the Social Security Act was amended to substantially expand the Medicare self-referral prohibitions. The amended statute, commonly referred to as "Stark II," now covers Medicare and Medicaid referrals and substantially expands the list of services covered, effective January 1, 1995. This article(More)
An 18-year-old woman presented with primary amenorrhea. She was prepubertal and had a few minor anomalies. Nonreciprocal chromosome translocations involving the X, a 2, and an 8 included a break in the region of the Xq13-q26, considered critical for normal ovarian development. Breakpoints within this region are thought to interfere with normal gonadal(More)
Aqueous solutions of molybdate at 90 degrees bring about the inversion of the C-1-C-2 fragment of aldoses having four or more carbon atoms, generating thermodynamically equilibrated mixtures of the starting aldose and its 2-epimer. In some cases, notably with the aldopentoses, substantial proportions of the 3-epimers are produced, as well as 2-epimers that(More)