Waiting for coronary revascularization in Toronto: 2 years' experience with a regional referral office.

OBJECTIVES: To determine the frequency of major adverse events among patients awaiting coronary revascularization; to assess the match between referring physicians'' estimates of urgency, a computer-generated multifactorial urgency rating score and actual waiting times; to determine the changes in waiting times as capacity for bypass surgery increased; and to evaluate the influence of choice of procedure or operator on waiting times. DESIGN: Consecutive case series. SETTING: Greater Toronto region. SUBJECTS: All 571 patients referred to an organized referral office by cardiologists at hospitals without on-site revascularization facilities between Jan. 3, 1989, and June 30, 1991. MAIN OUTCOME MEASURES: Preoperative fatal or nonfatal myocardial infarction; proportions of patients waiting longer than the maximum period recommended for their urgency rating; mean waiting times for various subgroups; and correlations among referring physicians'' urgency ratings, computer-generated multifactorial urgency scores and waiting times. RESULTS: Of the 496 patients accepted for a procedure 5 had fatal cardiac events and 3 nonfatal myocardial infarction. Events occurred three times more often in patients with left mainstem disease than in those in other anatomic categories (relative risk [RR] 3.05, 95% confidence interval [CI] 1.48 to 6.27, p = 0.03). Both the computer-generated scores and the referring physicians'' scores were correlated with the actual waiting time (r = 0.46 and 0.57 respectively). Waiting times and the proportion of patients with excessive waiting times fell during the study period (p < 0.0001). However, urgent cases were much less likely to be done "on time" than those with a recommended waiting time of more than 2 weeks (RR 0.16, 95% CI 0.11 to 0.25, p < 0.0001). The mean wait for coronary artery bypass grafting (CABG) was 22.73 days if the referral office was allowed to find a surgeon or interventional cardiologist and 35.31 days if one was requested (p = 0.002 after adjustment for urgency scores). CONCLUSIONS: Death of a patient on the waiting list is uncommon in an organized referral system. Patients with left main-stem disease are at higher risk of death than those in other anatomic categories. There were significant correlations between referring physicians'' ratings of urgency, multifactorial urgency scores and actual waiting times. Expansion of capacity for CABG led to shorter waiting times, but patients with unstable symptoms continued to wait longer than recommended. Requests for a specific surgeon caused significantly longer delays.     

Physician time-saving by employment of expanded-role nurses in family practice

Registered nurses working in five family practices in Kingston, Ontario, were given a period of in-service training and supplementary formal instruction at Queen''s University to expand their skills and enable them to undertake prescribed procedures in the physicians'' offices. Operational data collected from the five practices before and after training was analysed to assess the saving of physician time effected by the expansion of the nurses'' activities in providing primary medical care. Physician time was saved in all cases but the amount varied. The results are presented and discussed in relation to staff, physical premises and patterns of practice of the participating physicians. Under the most advantageous practice circumstances in this study, a 33.7% saving in original physician time was obtained. The mean time-saving for the five practices was 18.2%.     

Understanding of elderly patients' resuscitation preferences by physicians and nurses.

We compared the understanding by family physicians and nurses of their elderly outpatients'' preferences for cardiopulmonary resuscitation and mechanical ventilation under 3 scenarios reflecting varying qualities of life. Physicians and nurses correctly predicted patients'' treatment preferences in from 59% to 84% and 53% to 78% of cases, respectively, for the various decisions. For most decisions, neither physicians nor nurses were significantly more accurate in their predictions than expected by chance alone. Moreover, nurses and physicians did not significantly agree with one another in their predictions of patients'' preferences for any of these decisions. These results suggest that while nurses'' and physicians'' perceptions of patients'' preferences for life-sustaining treatment are not necessarily similar, neither nurses nor physicians systematically understand their elderly patients'' resuscitation preferences.     

Use of botulinum toxin

In an extensive survey of postgraduate physicians in two teaching hospitals (N = 141) for their humanistic attitudes, values and behavior, all ratings of physicians'' humanistic performance, including physicians'' own scores on self-report measures, supervising faculty, nurses and patient ratings, were modestly but significantly correlated with each other. Sex, ethnic or racial background, year of training, marital status, number of children, Alpha-Omega-Alpha membership or number of articles published were unrelated to physicians'' humanistic behavior. Several measures of humanism were positively correlated with having taken more courses in the social sciences and humanities, having had more early person-centered work experience and reporting that before medical school others had confided in them or sought their advice more frequently.     

Impact of patient care appraisal on physician behaviour in the office setting

The effect of patient care appraisal on physicians'' management of patients'' problems was assessed. Sixteen family physicians were involved. The eight in the experimental group helped in the selection of two of the five disease conditions to be audited and in the generation of optimal criteria of care for two of the conditions. Participation in the generation of optimal criteria was followed by a significant improvement in the physicians'' behaviour, but involvement in the selection of the conditions to be audited caused no change. The patient care appraisal did not lead to significant improvement of physicians'' management of the conditions. In a second analysis, in which only essential criteria of care were considered, the physicians who participated in the patient care appraisal significantly improved their management of patients'' problems. However, participation in the selection of the conditions and in the generation of the criteria of care had no effect on their performance. Patient care appraisal is an effective tool in continuing medical education and leads to improvement in the quality of care, provided the process focuses on essential criteria of care.     

Understanding physicians' response to AIDS.

Attempts to comprehend physicians'' extreme reaction to AIDS (acquired immune deficiency syndrome) have met with great difficulty since the disease brings into question traditional norms and assumptions. As the medical profession struggles to develop guidelines and policies to help it deal with this disease, it can draw on very little systematic research on the effect of AIDS on physicians'' attitudes and practices. We suggest a framework developed from the literature on physicians'' and society''s response to other disorders that would provide a basis for organizing the ever-increasing amount of information on physicians and AIDS and would guide systematic research aimed at understanding and predicting physicians'' participation in the prevention and management of AIDS. Within this framework we consider how characteristics of the disease, elements of the health care system and physicians'' attitudes interact to influence clinical and personal practices. AIDS had led to new delineations of physicians'' responsibility, modification of prevailing beliefs about physician autonomy and thus a redefinition of the role of the physician in North America.     

The psychophysiology of nausea

Nausea is an unpleasant sensation usually referred to the stomach and sometimes followed by vomiting. Little is known about the subjective aspects of nausea because like pain and fatigue, it is a private sensation. We conceive of nausea as a complex control mechanism that signals us when not to eat. Our research in the areas of motion sickness and chemotherapy has led us to propose that we each have a dynamic threshold for nausea, which depends on the interaction of inherent factors and more changeable psychological factors, and that this threshold effects the individual's cognitive appraisal of both the nauseogenic stimulus and his/her bodily change in response to the nauseogenic stimulus. Inherent factors that are described are age, gender and race; psychological factors that are included are anxiety, expectation, anticipation and adaptation. The physiological responses that have been found to accompany nausea include an increase in sympathetic nervous system activity, a decrease in parasympathetic activity, an increase of abnormal dysrhythmic gastric activity, and an increase in plasma vasopressin. It is concluded that beneficial selective reduction of nausea will depend on a greater knowledge of the interaction of the psychological and physiological variables.     

Psychological impact of adjuvant chemotherapy in the first two years after mastectomy.

Psychological symptoms were assessed over two years in a randomised trial of three forms of treatment given to women after mastectomy for stage II breast cancer. The treatments were: three weeks'' radiotherapy; one year''s adjuvant chemotherapy with cyclophosphamide, methotrexate, and 5-fluorouracil; and radiotherapy followed by chemotherapy. Analysis of the results on an intention to treat basis showed no substantial differences in depression or anxiety among groups at one, three, or six months after the operation. At 13 months, however, patients who had been allocated chemotherapy had significantly more symptoms, especially depression, than control patients treated with radiotherapy alone. Conditioned reflex nausea and vomiting increased considerably during the second six months of chemotherapy and persisted for up to a year afterwards. The psychological morbidity of adjuvant chemotherapy could be substantially reduced if courses of treatment were restricted to about six months.     

Antibiotics: no panacea.

Indicator conditions were used to evaluate the quality of 686 episodes of care provided in two emergency departments and in five family physicians'' offices. Overall, the care was considered adequate in 53% of the emergency department cases and in 40% of the cases dealt with in family physicians'' offices, the difference being significant (P less than 0.01). Referrals were very common in both settings, and when quality was assessed solely on the basis of the care actually given by the primary-care providers the difference between the two settings disappeared. Half the observed deficiencies in care related to failure to document the findings from history-taking and physical examination. From these and earlier findings we conclude that the emergency department can be an appropriate setting for the care of nontraumatic illness.     

Study on the Effects of Tablet Colour in the Treatment of Anxiety States

Forty-eight patients with anxiety states were treated with oxazepam (Serenid-D), which was administered in tablets of three different colours—red, yellow, and green. Every patient received one week''s treatment with each colour, according to a random programme. A latin square design was used to ensure complete balance between the colours and between the weeks. The patients'' symptoms were categorized and then assessed by both weekly physicians'' ratings and daily self-rating, which showed close agreement. Colour preference was shown on both these scales in that symptoms of anxiety were most improved with green, whereas depressive symptoms appeared to respond best to yellow. Such colour preferences, however, did not reach levels of statistical significance, except for phobias as rated on the physicians'' assessment.The results indicate that colour may play a part in the response to a drug.     

非小细胞肺癌化疗患者应对方式与生活质量的相关性研究

目的:调查非小细胞肺癌(NSCLC)化疗患者应对方式与生活质量的相关性。方法:选择2016年5月-2018年5月在我院接受化疗的NSCLC患者共110例,分别采用肺癌生命质量量表(EORTC-QLQ.C30)、肺癌患者生活质量调查问卷(EORTC-QLQ.LC13)和医学应对方式问卷(MCMQ)对患者生活质量与应对方式进行调查,分析其相关性,并采用多元逐步回归分析整体生活质量的影响因素。结果:不同化疗阶段,患者功能维度得分和整体生活质量得分显著下降,差异有统计学意义(P0.05),症状维度得分和化疗相关副反应得分显著升高,差异有统计学意义(P0.05)。肺癌表现得分的差异和三种应对方式得分的差异均无统计学意义(P0.05)。患者采取面对方式和回避方式的得分均高于屈服方式(P0.05)。面对方式与患者整体生活质量呈正相关,回避方式、屈服方式与患者整体生活质量呈负相关。多元逐步回归分析显示:年龄、疾病转移及面对方式是NSCLC化疗患者整体生活质量的影响因素(P0.05)。结论:NSCLC化疗患者应对方式与生活质量存在一定的相关性,应有效的发挥积极应对方式对生活质量的促进作用,提高患者生活质量。     

Taking care of patients--does it matter whether the physician is a woman?

Researchers have recently begun to compare male and female physicians'' attitudes toward patients, medical knowledge, and practice styles. Although women start medical school with more "humanistic views," the conservative effect of medical socialization on both male and female students attenuates these differences. While some studies suggested that men are more scientifically knowledgeable, recent studies showed no significant differences in physicians'' medical knowledge. Male and female physicians also had comparable diagnostic and therapeutic behavior. In the intimate world of physicians and patients, however, there were notable differences. Women physicians seemed better able to communicate sensitivity and caring to patients, which may account for the common perception that women are more caring and empathic physicians. Medical educators may wish to study more closely female physicians'' communication styles to identify these behaviors and inculcate them into all physicians.     

Therapeutic priorities of Canadian internists.

We surveyed 175 members of the Canadian Society of Internal Medicine to determine how they would rank seven commonly used treatments as to their clinical usefulness. A total of 70% of the respondents judged that the treatment of severe hypertension was the most beneficial. Coronary artery bypass surgery and treatment with acetylsalicylic acid for transient ischemic attacks were ranked next most useful. Cholestyramine therapy for hypercholesterolemia, the treatment of mild hypertension, isoniazid therapy for inactive tuberculosis and carotid endarterectomy in patients with mild stroke formed the final cluster. Except for treatment of severe hypertension there was a wide variation in the physicians'' enthusiasm for the various treatments. Possible explanations for this variation include physicians'' lack of awareness of the results of clinical trials, the wide range of risk reductions found in various trials of the same therapy, an unwillingness by physicians to generalize from clinical trials to individual patients, individual physicians'' placement of different values on the morbidity associated with various diseases, and the fact that physicians may rarely explicitly compare the usefulness of therapies. In general, the number of patients needed to be treated to save one life better reflected the physicians'' judgements than did the relative risk reduction.     

自然保护区居民福祉的历时性——以陕西佛坪国家级自然保护区为例

生态系统管理的一个重要挑战是在区域尺度上管理生态系统服务并提高当地居民福祉。选择陕西佛坪国家级自然保护区居民福祉进行历时性研究。构建了不同于较大范围和行政区域尺度的福祉指标测量体系,包括了主、客观福祉和千年生态系统评估下的人类福祉,然后对保护区居民从1995经2005至2015年的主、客观福祉和人类福祉指标进行了定量评估和特征刻画。历时数据结果表明:总体上看,保护区居民福祉有明显提升,2005—2015年阶段比1995—2005年阶段的增幅更多;居民主、客观福祉在各方面有了明显提升;人类福祉在基本生活与服务、安全、选择和行动的自由等方面有显著提高,健康方面有显著下滑。通过回归分析的结果表明:受访者居住地与保护区的距离等部分人口特征对提升居民主、客观福祉和人类福祉有着显著的积极影响。结合陕西省佛坪县实际情况,针对如何提升保护区居民福祉,提出了巩固生态系统服务成果、经济发展共建共享、社区共管助力旅游开发、提升教育水平促进旅游就业等建议。     

Radioallergosorbent testing for penicillin allergy in family practice.

OBJECTIVES: To determine (a) the prevalence of patients supposedly allergic to penicillin who have a positive radioallergosorbent test (RAST) result for penicillin G or V and (b) the predictive power of family physicians'' clinical judgement that a patient who is supposedly allergic to penicillin will have a positive RAST result. DESIGN: Prospective multicentre cross-sectional observational study. SETTING: Eleven primary care practices in Newfoundland; 10 were in a rural setting. PATIENTS: Of 110 consecutive adult patients with a supposed allergy to penicillin 97 agreed to participate in the study; 92 underwent RAST. INTERVENTIONS: Patients helped physicians complete a questionnaire and had a venous blood sample taken for the RAST. Physicians examined the clinical history and judged whether the patient was likely to have a positive RAST result. MEAN OUTCOME MEASURES: Rates of positive and negative RAST results for penicillin V and G. RESULTS: Of the 92 patients 8 had a positive RAST result and 84 a negative one. The positive predictive power of a "good" clinical history (e.g., urticaria, swollen eyes, tongue or lips, or an anaphylactic reaction witnessed by a physician) was low (10%); the negative predictive power of a "poor" clinical history (e.g., nausea, vomiting, diarrhea, fever, nonspecific rash or fainting) was 92%. CONCLUSIONS: Less than 10% of primary care patients with a supposed allergy to penicillin will have a positive RAST result. In addition, physicians'' predictions of allergy in such patients are imprecise.     

Digestive tract motor correlates of vomiting and nausea

The digestive tract from the upper esophageal sphincter to the ileum participates in the vomiting process, but the role of the digestive tract in nausea is unclear. In preparation for vomiting, the proximal stomach relaxes and the small intestine is evacuated orad in a single mass movement by a retrograde giant contraction and caudad in a stripping fashion by a series of phasic contractions. Orad evacuation of the small intestine may not only remove offending substances but may also dilute. or buffer gastric contents with intestinal and pancreaticobiliary secretions. In association with retching and vomiting, the striated muscle of the esophagus contracts longitudinally, pulling the relaxed proximal stomach into the thoracic cavity forming a funnel from stomach to esophagus. However, gastric evacuation does not occur until the hiatal fibers of the diaphragm relax during vomitus expulsion. Nausea is a subjective feeling in humans that is difficult to identify in animals. Various changes in digestive tract activity have been associated with nausea, but no evidence suggests that these events cause nausea. The prodromal signs of vomiting (e.g., increased heart rate and respiration) that occur concomitantly with the gastrointestinal motor correlates of vomiting have been considered autonomic indices of nausea in animals, but this has not been proven. Regardless, the gastrointestinal motor correlates of vomiting do not cause the prodromata. The emetic central pattern generator may be organized in parallel with respect to its individual autonomic correlates, but as groups of responses, the autonomic and somatomotor correlates may be organized in series.