Vibration exposure, smoking, and vascular dysfunction.

OBJECTIVES: Vibration white finger (VWF), also known as "occupational Raynaud's phenomenon", is marked by arterial hyperresponsiveness and vasoconstriction during cold stimulation. The impact of tobacco use, and by extension stopping smoking, on the long term course of the disease has been inconclusively characterised. The objectives of this study included assessment of the impact of tobacco use on symptoms and on objective tests in shipyard workers exposed to vibration, and in gauging the natural history of the disorder after stopping exposure and changing smoking patterns. METHODS: In a cross sectional investigation, 601 current and former users of pneumatic tools were evaluated subjectively for cold related vascular symptoms, and tested by cold challenge plethysmography. There was follow up and subsequent testing of 199 members of the severely effected subgroup of smokers and non-smokers, many of whom had stopped smoking in the interval between tests. Effects of smoking and stopping smoking on symptoms and plethsymographic results were assessed. RESULTS: Symptoms and measured abnormal vascular responses related to cold were more severe in smokers than in non-smokers. Follow up of 199 severely effected members of the cohort, all removed from exposure for 2 years, indicated that smokers were almost twice as likely to have more severe vasospasm (test finger/control finger systolic blood pressure% (FSBP%) <30) than were non-smokers (-32.2% v 17.4%). 53 Subjects who stopped smoking during the interval between tests improved, and were indistinguishable from non-smokers similarly exposed to vibration. Additional physiological benefits of stopping smoking were still apparent at further follow up examination, 1 year later. Improvements evident on plethysmography were not accompanied by improvements in symptoms, which were unaffected by smoking. CONCLUSIONS: Smoking seems to delay physiological improvement in response to cold challenge in workers with VWF, after the end of exposure to vibration. Symptoms were less likely to improve over time than digital blood pressure, and were less affected by smoking.

Will the year 2000 affect your organization's investments?

Healthcare financial managers responsible for the investments of their healthcare organizations should identify the extent of their investment programs' exposure to year-2000-related problems. A letter should be sent to investment-related vendors requesting specific information and assurances regarding the vendors' efforts to contain or eliminate the year 2000 problem. An internal timetable also should be established to move the year 2000 compliance program forward in a timely and organized fashion.

A vaccine consisting of recombinant Borrelia burgdorferi outer-surface protein A to prevent Lyme disease. Recombinant Outer-Surface Protein A Lyme Disease Vaccine Study Consortium.

BACKGROUND: Lyme disease is a multisystem inflammatory disease caused by infection with the tick-borne spirochete Borrelia burgdorferi and is the most common vector-borne infection in the United States. We assessed the efficacy of a recombinant vaccine consisting of outer-surface protein A (OspA) without adjuvant in subjects at risk for Lyme disease. METHODS: For this double-blind trial, 10,305 subjects 18 years of age or older were recruited at 14 sites in areas of the United States where Lyme disease was endemic; the subjects were randomly assigned to receive either placebo (5149 subjects) or 30 microg of OspA vaccine (5156 subjects). The first two injections were administered 1 month apart, and 7515 subjects also received a booster dose at 12 months. The subjects were observed for two seasons during which the risk of transmission of Lyme disease was high. The primary end point was the number of new clinically and serologically confirmed cases of Lyme disease. RESULTS: The efficacy of the vaccine was 68 percent in the first year of the study in the entire population and 92 percent in the second year among the 3745 subjects who received the third injection. The vaccine was well tolerated. There was a higher incidence of mild, self-limited local and systemic reactions in the vaccine group, but only during the seven days after vaccination. There was no significant increase in the frequency of arthritis or neurologic events in vaccine recipients. CONCLUSIONS: In this study, OspA vaccine was safe and effective in the prevention of Lyme disease.

Issues related to smoking cessation among substance abusers.

Initial studies have found that stop-smoking treatments for newly recovering substance abusers have been neither harmful to sobriety nor effective in achieving smoking cessation. The development of more effective stop-smoking treatments for this population could be aided by delineating their particular smoking-related characteristics. This article describes the biopsychosocial characteristics of newly recovering substance abusers that are relevant to smoking cessation, and suggests that there are notable differences between abusers and nonabusers that may contribute to abusers' greater difficulty in quitting smoking. It also recommends changes in existing treatment protocols where applicable and identifies key areas for future research.

Investing: reducing risks to enhance returns.

The financial assets of a healthcare organization can present many opportunities for investment. In order to develop a profitable investment program that avoids risky speculation, however, healthcare financial managers must fully understand the nature and risks of their organizations' investments. They must define and monitor their investment objectives, limitations, levels of acceptable risk and policies and conditions through a statement of investment policy and comprehensive investment guidelines.

Substance-dependent inpatients who accept smoking treatment.

Delineating the characteristics of substance-dependent inpatients who are interested in receiving smoking treatment is critical to developing effective recruitment strategies and interventions for this population. Thus, this study comprehensively assessed and compared substance-dependent inpatients who accepted (n = 75) versus refused (n = 25) a stop-smoking treatment. Univariate analyses found treatment acceptors were younger, more addicted to nicotine, had more smoking-related health problems, had more positive attitudes about quitting smoking, and had more positive attitudes about the relationship between smoking cessation and drug/alcohol sobriety (e.g., believed cessation would positively impact sobriety). Logistic regression revealed that believing inpatient treatment was the best time to quit smoking was the primary factor associated with accepting treatment. Aside from their attitudes about the relationship between smoking cessation and sobriety, substance abusers who accepted smoking treatment appeared similar (e.g., in demographics, smoking behaviors) to nonabusers described in previous studies.

Cigarette smoking in alcohol and cocaine abusers.

This study compared the cigarette smoking of substance abusers whose primary substance of abuse was cocaine (cocaine group: n = 18) or alcohol (alcohol group: n = 23). Cigarette smoking and smoking topography was assessed daily (via self-report and single cigarette topography assessments) at baseline and following a switch to a cigarette brand with 30% lower nicotine. The alcohol and cocaine groups did not differ at baseline on cigarettes smoked per day, cigarette nicotine, smoking topography, or the Fagerstrom Tolerance Questionnaire. However, the cocaine group exhibited marked increases in compensatory smoking relative to the alcohol group following the 30% reduction in cigarette nicotine, as evidenced by decreases in the average time interval between each puff, p < .05, increases in the total amount of time spent puffing, p < .05, and increases in estimated total amount of time spent puffing per day, p < .05. These findings provide initial data that cocaine and alcohol abusers may titrate nicotine differently and suggest that cocaine abusers may require additional or modified smoking cessation treatments.

A cognitive-behavioral therapeutic community for substance dependent and homeless veterans: treatment outcome.

This paper presents data regarding a residential rehabilitation program that integrates cognitive-behavioral and therapeutic community techniques to treat homelessness and substance abuse. The study cohort was 110 military veterans admitted to a Domiciliary Care for Homeless Veterans program of the Department of Veterans Affairs. The cohort had multiple psychosocial problems at admission, and all had drug/alcohol abstinence as a treatment goal. Structured interviews conducted at 3, 6, 9, and 12 months postdischarge revealed that a substantial proportion had positive outcomes with respect to housing, substance abuse abstinence, employment, and self-rated psychological symptoms. This integrated cognitive-behavioral therapeutic community approach appears to be a viable treatment for this subset of homeless and also may be effective for other populations with similar clinical characteristics.

Wise management of investments: the CFO's role.

Asset pools of investable funds are major sources of revenue for healthcare organizations. A prudent investment program can assure that these funds will be controlled adequately and managed efficiently. This type of program clearly defines the goals of investment, the characteristics of appropriate investment instruments, the means of monitoring and reporting fund activities, and the responsibilities and qualifications of the institutional investor.

Drug and alcohol abuse inpatients' attitudes about smoking cessation.

Attitudes about quitting cigarette smoking were assessed at admission to a substance abuse treatment program for homeless veterans. The majority were interested in quitting smoking, believed that inpatient drug/alcohol treatment was the best time to quit, and that quitting would not threaten their sobriety. Using cluster analysis, four subgroups of inpatients with different levels of interest, confidence, and motivation regarding quitting smoking were identified. Our inpatients' positive attitudes about quitting smoking stand in contrast with previously reported attitudes of many health professionals, and suggest that inpatient treatment could be an opportune time to provide stop-smoking interventions. Findings also suggest that different treatment approaches may be needed for subgroups of inpatients with varying attitudes about quitting.