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Biomedical subjects

R D Rice

Publications and source records attributed to R D Rice.

12 recordsLinked to original sources
PubMed1998

Evaluation of pharyngeal and laryngeal structure and function in patients with oculo-auriculo-vertebral spectrum.

OBJECTIVE: This study described the occurrence and expression of pharyngeal and laryngeal anomalies in a population of patients with oculo-auriculo-vertebral spectrum (OAVS). DESIGN: Cross-sectional study using chart review, physical examination, and endoscopic evaluation of the pharynx and larynx, and perceptual and aerodynamic evaluation of speech for assessment of vocal tract function. SETTING: Academic tertiary referral center. PATIENTS: Chart review of 41 patients with a diagnosis of OAVS and clinical evaluation of 23 of the patients identified in the initial chart review, ranging in age from 9 months to 17 years. MAIN OUTCOME MEASURES: Data from chart review pertaining to airway and speech symptoms. Physical examination and endoscopic studies of pharyngeal and laryngeal structure and function and perceptual and aerodynamic evaluation of speech, resonance, and voice. RESULTS: Chart review showed a high occurrence of indicators of pharyngeal and laryngeal abnormalities such as velopharyngeal inadequacy and airway obstruction. Clinical evaluations documented a variety of abnormalities in pharyngeal and laryngeal structure and function as well as impairment in speech articulation, resonance, and voice. Presence and severity of pharyngeal and laryngeal abnormalities were not correlated with the severity of expression of the spectrum based on mandibular morphology. CONCLUSIONS: Oculo-auriculo-vertebral spectrum appears to be associated with a high occurrence of structural and functional abnormalities of the pharynx and larynx that may contribute to increased risk of airway obstruction, communication impairment, and morbidity.

Adolescent↗
PubMed1995

Use of the tunable dye laser to delay McFarlane skin flaps.

OBJECTIVE: To determine whether the argon tunable dye laser, used in a noncutting, hemocoagulative mode, improves skin flap survival as effectively as a surgical delay procedure. DESIGN: A physiologic, controlled trial was completed with three groups: acute control skin flaps, surgical delay skin flaps, and experimental laser delay skin flaps. The outcome variable was percentage of skin flap survival. SUBJECTS: Forty-four male Sprague-Dawley rats. INTERVENTIONS: McFarlane skin flaps were raised in all groups. The first group had no delay procedure, the second had the standard surgical delay, and the third group was lased at the periphery of the flap 2 weeks before raising the acute flap. RESULTS: The acute control group had survival of 85.7% +/- 1.5% (mean +/- SE) of skin flaps; surgical control group, 94.4% +/- 0.7%; laser delay group, 96.5% +/- 0.1%. The survival of the experimental group was better than the acute control group and was not different from the surgical delay group by the Scheffé multiple comparison test. CONCLUSIONS: This research may lead to a technique to reproduce the benefits of the delay phenomenon without the risks and cost of a surgical procedure.

Animals↗
PubMed1995

Comparison of tunable dye and KTP lasers in nonsurgical delay of cutaneous flaps.

PROBLEM: Reproducing the benefits of the delay phenomenon without the risks and costs of a surgical procedure has long been a goal of skin flap physiologists. After the success of the suture-delay technique and argon tunable dye laser in improving survival in McFarlane skin flaps, important questions remained: (1) will laser delay be effective in dermal flaps, (2) can induction of collateral blood flow be documented, and (3) is the KTP laser, which is generally more available to otolaryngologists, more effective than the argon tunable dye laser. METHODS: The KTP and argon tunable dye lasers were compared by use of the laser-delay technique, with two outcome measures - blood flow and survival. The laser-delay procedure was accomplished with the laser in a noncutting mode in an attempt to coagulate cutaneous vessels at the periphery of a planned skin flap. The objective was to induce collateralization and improve skin flap survival. Patterns of blood flow were tested by use of the base occlusion test. Flap survival of an acute control flap group was compared with that of the laser delay groups. RESULTS: Blood flowing to the distal flap area originated from the base of the flap area after laser delay. Flap survival of the laser delay groups was significantly improved over that of the control group. CONCLUSION: Both lasers were able to effectively induce collateralization and improve flap survival.

Animals↗
PubMed1993

Merkel cell tumor of the head and neck. Five new cases with literature review.

Merkel cell carcinoma (MCC) of the skin is an uncommon, but highly aggressive neoplasm with a marked propensity for local and distant metastasis. Despite the fact that more than half of the 600 cases of MCC reported in the literature involved primary sites in the head and neck, MCC has rarely been discussed in otolaryngology publications. We present five new cases of MCC of the head and neck and summarize 89 additional cases from the literature in which detailed treatment and survival data were given. Our findings again emphasize the difficulty in making the initial histopathologic diagnosis of MCC and demonstrate the necessity of early diagnosis and multimodality treatment.

Adult↗
PubMed1979

The effects of the Rice infant sensorimotor stimulation treatment on the development of high-risk infants.

The Rice Infant Sensorimotor Stimulation (RISS) treatment was given to 15 premature infants to determine effects on neurophysiological development. The mothers of the infants were trained to administer the treatment for 15 minutes, 4 times a day, for 1 month, beginning the day the infant arrived home from the hospital. When each infant in the study (15 experimental and 14 control) was 4 months postnatal age, he/she was examined by a pediatrician, a psychologist, and a pediatric nurse who had no knowledge of which infant was experimental or control. The results indicated the experimental infants made significant gains in neurological development (p less than .001), weight gain (p less than .04), and mental development (p less than .05). The findings of this research indicate that early and systematic stimulation of the nerve pathways of the skin and of the vestibular nerve cells can accelerate growth and development of premature infants.

Child Development↗