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Biomedical subjects

C M Lindley

Publications and source records attributed to C M Lindley.

31 records · Page 2Linked to original sources
PubMed1989

Incidence and duration of chemotherapy-induced nausea and vomiting in the outpatient oncology population.

Nausea and vomiting are commonly recognized side effects of chemotherapy. However, the incidence and duration of these effects have not been systematically studied in a large outpatient oncology population. This survey was conducted over two consecutive 6-week periods in the adult oncology clinics of two university teaching hospitals. The objectives were: (1) to document the incidence and duration of chemotherapy-induced nausea and vomiting; (2) to identify variables that influence nausea and vomiting; and (3) to describe patterns of antiemetic prescribing and compliance. One hundred thirty-eight completed patient-maintained diaries were returned (70% response rate). Anticipatory nausea and vomiting were reported by 9.4% and 6.5% of patients, respectively. Fifty percent and 27% of patients reported nausea and vomiting, respectively, on the day chemotherapy was administered (day 1: acute nausea and vomiting phase). Percentages fell to 22% and 11% by day three and 14% and 2.5% on day 5. Of patients who reported nausea and vomiting during the five-day period, 52% and 33% experienced nausea and vomiting, respectively, during the delayed period only (days 2 through 5: delayed emesis phase). Emetogenicity of chemotherapy significantly influenced incidence and duration of those symptoms. Sixty-seven percent of patients reported taking antiemetics on one or more days during the survey period. Of patients who reported antiemetic use, 92% reported antiemetics on day 1, 51% on day 3, and 31% on day 5. At-home antiemetic use was related to the emetogenicity of chemotherapy received. Patients who receive moderate to strong emetogens as defined in this report should receive antiemetic therapy for a minimum of three days. Increasing the dose of antiemetic prescribed both in the clinic and at home may be of benefit.

Adult↗
PubMed1988

Extreme warfarin intoxication secondary to possible covert drug ingestion.

A young adult male patient presented with an excessively prolonged prothrombin time (greater than 90 sec) following approximately two weeks of therapy with oral warfarin sodium, in doses between 2.5 and 5 mg/d. Repeated administration of vitamin K and fresh frozen plasma was required to reverse the anticoagulation and maintain a normalized prothrombin time. Serial warfarin plasma concentration measurements were used to interpret the apparently unusual prothrombin time response profile and to detect the possibility of covert drug ingestion.

Adult↗
PubMed1987

Effectiveness of improved targeting efforts for influenza immunization in an ambulatory care setting.

Annual vaccination programs against influenza are aimed at decreasing the morbidity and mortality associated with an infection. Recent epidemics have resulted in 40,000 excess deaths reported. The success of an immunization program depends both on the composition of the annual vaccine and the targeting efficacy of the program. National estimates of targeting efficacy are reported at 20%. An evaluation performed in the author's ambulatory care practice in the spring of 1984 yielded an overall efficacy of 24% in targeting activities. Efforts to improve the targeting practices included enhanced practitioner and patient education about the vaccine, flagging of medication records for patients at risk, and adoption of CDC guidelines for categorizing patients based on the degree of risk. A subsequent evaluation in 1986 showed a significant improvement in targeting efficacy (40%; P less than .001). Subgroup analysis indicated that the targeting efficacy of the program was greatest for the high-risk patients (P less than .025). An overall immunization rate of at least 80% of patients at risk is our desired goal.

Adolescent↗
PubMedDate not supplied

Assessment of pain and patterns of analgesic use in hospice patients.

The purpose of this study is to describe patterns of pain, analgesic use, barriers to pain control, and various aspects of lifestyle affected by pain in hospice patients. Seventy-six charts of deceased patients were randomly selected of patients who had received care from Hospice of Wake County between August 1990 and August 1991. All patient's charts were reviewed from date of entry into hospice until death. Pain assessments were routinely performed at entry into hospice, then at one month intervals, and, thereafter, whenever a change in pain status occurred. The average number of pain assessments performed per patient was 2.7 (range 18). Pain intensity score increased as the number of pain assessments increased. Pain was described as occasional (25.2 percent), frequent (26.6 percent) or constant (24.1 percent). Most common analgesic medications were long-acting morphine sulphate (25.4 percent), acetaminophen and hydroxy/oxycodone combinations (20.1 percent) and NSAIDS (17.1 percent). Approximately 40 percent of all pain assessments reflected use of greater than one analgesic agent and prn and scheduled medications simultaneously. Eighty percent of all pain assessments prompted a recommendation to change the analgesic regimen and 62.5 percent of regimen changes were associated with improvement in pain status. Barriers to pain control and lifestyle alterations due to pain were identified. The positive findings in this report, compared to previous similar investigations, supports the use of the pain assessment document and guidelines for cancer pain management in use at the Hospice of Wake County.

Adult↗
PubMedDate not supplied

Thrombotic microangiopathy associated with chemotherapy: case report and review of the literature.

Thrombotic microangiopathy (TMA) is a serious toxicity associated with a small number of antineoplastic agents. A case report of a patient with probable cisplatin and bleomycin-induced TMA is presented. The basic triad of symptoms that occurs in the TMA syndrome include microangiopathic hemolytic anemia, thrombocytopenia, and renal impairment. Cardiovascular, pulmonary, and neurologic complications also occur frequently. The pathogenesis of chemotherapy-associated thrombotic microangiopathy (C-TMA) has not been established. Proposed mechanisms include von Willebrand Factor abnormalities, decreased prostacyclin production, and immune complex formation. Treatment modalities have been unsuccessful and the majority of patients reported have died. Immunoperfusion with staphylococcal protein A is the most effective treatment available and this new technique appears promising. This article reviews the results of all cases of C-TMA reported to date in the English literature and discusses the theories of pathogenesis, clinical features, treatment, and treatment-related complications of the syndrome.

Antineoplastic Agents↗
PubMedDate not supplied

Pharmacy-perceived barriers to cancer pain control: results of the North Carolina Cancer Pain Initiative Pharmacist Survey.

OBJECTIVE: To assess pharmacists' knowledge, attitudes, and beliefs regarding the use of narcotics in cancer pain management, identify pharmacist counseling activities for cancer pain patients, assess pharmacy-related barriers to cancer pain management, and evaluate the availability of narcotic analgesics. METHODS: Mailing of a six-page survey. SETTING: Five hundred randomly selected pharmacists registered in North Carolina. PARTICIPANTS: Of 500 pharmacists surveyed, 141 surveys were completed and returned for a response rate of 28.2 percent. RESULTS: Pharmacists surveyed were knowledgeable regarding the problem of undertreatment of cancer pain. More than 80 percent of respondents replied that most cancer patients experience pain at some time during their illness. Eighty-five percent of respondents agreed that the nurse must believe the patient's report of pain and that the patient is the best judge of the intensity of the pain. Conservative physician prescribing patterns and conservative administration patterns of nurses were identified as perceived barriers to adequate pain management by 51 and 44 percent of respondents, respectively. Less than 30 percent of respondents frequently counseled cancer pain patients and were unable to identify patients who have cancer pain as a major medical illness. Hospital pharmacists recommended adjunctive therapy more often than did community pharmacists (p = 0.013). Interventions in pain management regimens were more often conducted by hospital pharmacists than by community pharmacists (p = 0.049). Differences in availability of narcotics was noted among practice sites for some more potent narcotics. Of the pharmacists surveyed, only 43 percent had attended a continuing education program on cancer pain management. Ninety-six percent of respondents were interested in attending a continuing education program in the future. CONCLUSIONS: Pharmacists in North Carolina are aware that the undertreatment of cancer pain is a serious medical problem. Unfortunately, pharmacists appear to be unable to identify patients with cancer pain as a major medical problem; therefore, counseling activity is limited. Addiction is still perceived as a barrier by some pharmacists. Through organizations such as the North Carolina Pain Initiative, these problems can be addressed.

Community Pharmacy Services↗
PubMedDate not supplied

Granulocyte colony-stimulating factor use in cancer patients.

OBJECTIVE: To conduct a retrospective drug utilization evaluation comparing the use of granulocyte colony-stimulating factor (G-CSF) at a university medical center with the American Society of Clinical Oncology (ASCO) CSFs Practice Guidelines. METHODS: Patients who received G-CSF from June 1, 1996, to December 31, 1996, were identified through the pharmacy computer system and the medical records were reviewed for a randomly selected sample of 26% of the 289 patients identified. Outpatient, inpatient, and electronic medical records were reviewed for the indication, dosage, day of initiation, day of discontinuation, and absolute neutrophil count (ANC) monitoring plan for each course of G-CSF; these records were subsequently compared with the ASCO guidelines. RESULTS: The use of G-CSF after chemotherapy was evaluated in 51 patients who received a total of 182 courses of G-CSF. The goal of chemotherapy was curative in 61% of courses. Sixty-five percent of G-CSF courses were prescribed for primary prophylaxis. Of these, 74% followed chemotherapy in patients with an expected incidence of febrile neutropenia > or =40% or followed chemotherapy in patients with compromised marrow reserve secondary to extensive prior therapy or in patients older than 60 years. Most of the G-CSF courses (75%) were rounded to the nearest vial size. The areas of greatest departure from the ASCO guidelines included aspects of initiation and discontinuation of G-CSF courses and inadequate documentation of ANC recovery. CONCLUSIONS: These results demonstrate a number of specific opportunities for oncology pharmacists to improve the use of G-CSF in patients receiving chemotherapy. Recommendations were made to the pharmacy and therapeutics committee and medical oncologists to improve compliance with the ASCO guidelines.

Aged↗
PubMedDate not supplied

Oncology nurses' attitudes, perceptions, and knowledge of quality-of-life assessment in patients with cancer.

PURPOSE/OBJECTIVES: To provide an overview of the current attitudes and perceptions of oncology nurses regarding the relevance and measurability of quality of life (QOL) in patients with cancer. DESIGN AND SETTING: Exploratory survey conducted at a scientific exhibit of QOL instruments at the 1990 Oncology Nursing Society Congress held in Washington, DC. SAMPLE: Convenience sample of 621 nurses visiting the exhibit. METHODS: Subjects completed two questionnaires addressing opinions regarding the impact of treatment on QOL, the importance of QOL as an outcome measure, the current status of QOL assessment, barriers to measuring QOL, and knowledge about QOL measurement tissues. MAIN OUTCOME MEASURES: Results of answers to questionnaire items overall as well as selected demographic variables. FINDINGS: Chemotherapy was thought to have the greatest negative impact on QOL, and vomiting, nausea, and tiredness were judged to be the side effects of treatment that most commonly affected QOL. QOL was judged as important an outcome measure as tumor response, toxicity, and survival. Generally, nurses were knowledgeable regarding QOL measurement issues; however, many of the respondents indicated that they believed valid QOL instruments did not exist or that QOL could not be objectively quantified. CONCLUSIONS: Nurses value QOL as an outcome measure of cancer treatment but lack knowledge regarding its measurability, particularly with respect to reliable tools and available time to assess it well. IMPLICATIONS FOR NURSING PRACTICE: Nurses can be instrumental in incorporating QOL measurement as an outcome of treatment and development of brief self-administered tools. Commentary on this research and author response is included at the conclusion of the article.

Antineoplastic Agents↗
PubMedDate not supplied

Methotrexate elimination in a patient with an orthotopic neobladder with and without a urethral catheter.

Placement of a urethral catheter has been recommended to ensure adequate methotrexate elimination in patients with a neobladder; however, the need for this and its impact on methotrexate elimination have not been determined. A 53-year-old man with a cecal continent urinary diversion received intravenous methotrexate 30 mg/m2 on two occasions, with and without urethral catheter drainage of the neobladder. Serum methotrexate concentrations declined at a rate that resulted in 24- and 48-hour values falling below the accepted toxic concentration threshold of 5-50 mumol/L, and 0.05 mumol/L, respectively. In this man, who received low-dose methotrexate, catheterization of the neobladder did not alter methotrexate elimination sufficiently to justify its cost, risk, and inconvenience.

Antimetabolites, Antineoplastic↗