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Biomedical subjects

R Kendrick

Publications and source records attributed to R Kendrick.

11 recordsLinked to original sources
PubMed2006

Onset and saturation of the kink instability in a current-carrying line-tied plasma.

An internal kink instability is observed to grow and saturate in a line-tied screw pinch plasma. Detailed measurements show that an ideal, line-tied kink mode begins growing when the safety factor q = (4pi2r2B(z))/(mu0I(p)(r)L) drops below 1 inside the plasma; the saturated state corresponds to a rotating helical equilibrium. In addition to the ideal mode, reconnection events are observed to periodically flatten the current profile and change the magnetic topology.

Journal Article↗
PubMed1999

Gradual painless visual loss: glaucoma.

Glaucoma is one of the leading causes of blindness in adult Americans. This disease remains undetected in one half of the people with this disease. Primary open angle glaucoma is the most common form of the disease. Patients at risk for glaucoma usually have one or more of the following characteristics: advanced age, diabetes, myopia, elevated intraocular pressure, large cup to disc ratio, and a positive family history of the disease. Presently in the United States, treatment for primary open angle glaucoma is usually medical. Six classes of glaucoma medications are available, all of which have side effects. The second most prevalent form of glaucoma is angle closure glaucoma, the treatment for which is usually surgical. Although a cure for the various forms of glaucoma does not exist, an awareness of the problem and early detection and treatment minimize the impact of the disease.

Aged↗
PubMed1996

The results of ab interno laser thermal sclerostomy combined with cataract surgery versus trabeculectomy combined with cataract surgery 6 to 12 months postoperatively.

BACKGROUND AND OBJECTIVE: When cataract surgery and glaucoma surgery are combined, the theoretical advantages of pressure control, removal of the visual impairment, and protection against an increase in intraocular pressure (IOP) in the immediate postoperative period are gained. The authors' objective was to determine whether ab interno laser thermal sclerostomy (LTS) combined with cataract surgery would be as effective as trabeculectomy combined with cataract surgery. PATIENTS AND METHODS: Ab interno LTS was compared with trabeculectomy, retrospectively, for patients who had undergone combined cataract and glaucoma surgery. RESULTS: There was no significant difference in the numbers of patients using no medications or fewer medications at 6 and 12 months. There was a greater reduction in IOP in the LTS group. CONCLUSIONS: LTS may be better than trabeculectomy in combined cataract and glaucoma surgery because it reduces the IOP more. Compared with trabeculectomy, LTS is simpler to perform and adds less operating time to cataract surgery. Continued follow-up is recommended.

Adult↗
PubMed1990

Spreading the word.

Explore the source record for details and available documents.

Community Mental Health Services↗
PubMed1990

Intravenous diclofenac sodium. Does its administration before operation suppress postoperative pain?

Intravenous diclofenac sodium was evaluated in a double-blind randomised trial relative to intramuscular diclofenac, intravenous fentanyl, and intramuscular placebo in 160 patients undergoing extraction of impacted lower third molar teeth. The test drug was administered before operation in an attempt to alleviate postoperative pain. A 10-cm visual analogue scale was used to assess pain at 30 minutes and one day after surgery, if the patients stayed overnight. Patients who received intravenous diclofenac had significantly less pain than the other groups 30 minutes after operation. They also had significantly less pain one day after surgery than the placebo or opioid groups, but not less than the intramuscular diclofenac group. Capillary bleeding time, in comparison with placebo, was significantly prolonged after the use of intramuscular diclofenac, and a similar but nonsignificant trend was observed in the intravenous diclofenac group. No problems were encountered with excessive bleeding in any group.

Adolescent↗
PubMed1983

Pharmacists and their relationship with elderly patients.

A survey of 60 randomly selected pharmacists explored their relationship with elderly patients, including their information storage systems, dispensing practices and the major problems they encounter with these patients. Nearly all the pharmacists kept a medication profile for each elderly patient, and one third used a computer, which facilitated recording of additional information. However, few recorded the age of the patient. Many pharmacists counselled their elderly patients on the correct use of medications, but few provided counselling on the use of nonprescription drugs. Most of the pharmacists reported using techniques to improve compliance among elderly patients. More than 80% of the pharmacists reported apparently inappropriate prescribing by physicians at least occasionally.

Aged↗
PubMed1982

Compliance with prescribed medication by elderly patients.

Factors contributing to improper use of medication were examined in 40 patients aged 65 years or more who were in a home care program. They reported taking an average of 3.8 prescription medications and 1.2 nonprescription medications each. Pill counts showed that they were actually taking 57% of the prescribed medications; compliance decreased with the number of medications concurrently prescribed. Poor labelling instructions, difficulty opening childproof containers and misunderstanding of verbal instructions contributed to this problem. The patients tended to rely more on physicians than on pharmacists or visiting nurses for advice problems with medication.

Aged↗