Biomedical subjects

B R Myers

Publications and source records attributed to B R Myers.

4 recordsLinked to original sources

PubMed1993

Challenges facing pharmacy practice during Operation Desert Storm.

Many challenges face the pharmacist in a combat zone hospital. The 13th Evacuation Hospital, Wisconsin Army National Guard was deployed in support of Operation Desert Storm. Its mission before and during the ground campaign identified key areas where pharmacy involvement assisted in the provision of care. Special skills and subject areas were determined. This article reviews the authors' experiences and offers suggestions to aid pharmacy personnel in preparation for future deployment.

Anti-Bacterial Agents↗

PubMed1990

Laryngeal electromyography in the diagnosis of laryngeal nerve injuries.

A practical technique of electromyographic (EMG) sampling of the cricothyroid and thyroarytenoid (vocalis) muscles is described. Quantitative motor unit action potential (MUAP) analysis on a group of seven healthy subjects revealed a mean amplitude of 426 microV for the vocalis and 500 microV for the cricothyroid muscle. Mean MUAP duration for the vocalis muscle was 3.5 msec and 4.4 msec for the cricothyroid. Normal activation patterns are reviewed for each muscle. The results of EMG studies in 18 consecutive patients referred to the EMG laboratory with chronic hoarseness was reviewed. There was good agreement between findings at laryngoscopy and EMG, although more widespread involvement was seen on EMG than was suspected on the basis of laryngoscopy. Vocal cord immobility (apparent paralysis) was not usually accompanied by the total absence of MUAPs. The procedure was well tolerated without local anesthesia and provides information about peripheral nerves which may be of prognostic value.

Action Potentials↗

PubMed1978

Dental implant fixation by electrically mediated process. I. Interfacial strength.

In order to determine the effect of electrical stimulation on canine alveolar bone, porous PMMA dental implants with a solid core (on which a Pt-13% Rh electrode was wound) were implanted in the mesial socket of the canine mandibular fourth premolars bilaterally. The positive electrode was implanted into the distal socket. The power pack was placed over the masseteric fossa. The implants, wires and power packs were all implanted subcutaneously. Each animal had an experimental and control implant. Mechanical push-out samples were prepared by sectioning a 2mm thick section of the mandible with the implant in the middle. The samples were tested immediately and the load-deflection curves were obtained.

Alveolar Process↗

PubMed1978

Dental implant fixation by electrically mediated process. II. Tissue ingrowth.

The effect of electrical stimulation on the interfacial strength of the porous polymethylmethacrylate implant/oral tissue union and the amount of tissue growth was investigated in the fourth premolars of dogs. The study indicates the interfacial strength peaks at about three weeks and decreases thereafter for both control and the stimulated specimens. The stimulated side showed consistently higher strength than its paired control. There was a positive relationship between implant period and amount of tissue in the pores although the latter was not correlated with the interfacial strength. Microradiographs showed a different pattern of new bone formation on the stimulated side when compared to the control. On both sides, bone formation occurred upward from the bottom of the tooth socket while on the stimulated side, new bone also developed from the sides of the tooth socket which was minimal in the controls. It is proposed that the direction of oral tissue formation is responsible for the different results obtained in this study compared with a similar study on long bones.

Animals↗