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There is an ongoing debate in nurse education concerning the role and delivery of the biological sciences in the nursing curriculum. One of the fundamental questions raised by this debate asks how best can teachers impart biological knowledge in a manner that can be readily applied by students and qualified nurses to inform their clinical practice. This paper will include a discussion of some of the features of pre-registration education that may have influenced the manner in which biological sciences are perceived, taught and used by nurses. It will be argued that nursing may have developed a form of incomplete holism and that this may be in part responsible for the challenges that remain to be met within this area of the nursing curriculum. As a response to incomplete holism an innovative approach within pre-registration education will be introduced. This development involves the use of linked teaching sessions which aim to develop the analytical skills necessary to apply physiological knowledge to nursing practice.  相似文献   
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Advances in endoscopic surgical equipment and laser technology have expanded the role of thoracoscopy to include thoracoscopic pulmonary resection. Eighty-five thoracoscopic pulmonary resections were performed on 61 consecutive patients with small lesions (less than 3 cm) in the outer third of the lung. Patients with preoperative histologic evidence of bronchogenic carcinoma were excluded unless there was impairment of cardiopulmonary function, advanced age, or concomitant extrathoracic malignancy. These thoracoscopic pulmonary resections were accomplished with the neodymium:yttrium-aluminum garnet laser (31), endoscopic stapler (29), or both (25). The mean diameter of the lesions was 1.3 cm (range, 0.4 to 2.7 cm). There has been one late death (38th postoperative day) unrelated to the operation. Morbidity consisted of postoperative atelectasis (2), pneumonia (2), bleeding requiring transfusion (1), and bronchopleural fistula of greater than 7 days duration (3). There were no wound problems. The mean period of chest tube drainage was 3.3 +/- 3.0 days. Mean postoperative stay was 5.7 +/- 4.9 days. The pathologic diagnosis was benign disease in 28 patients (interstitial fibrosis/pneumonitis, 15; radiation fibrosis, 1; sclerosing hemangioma, 1; rheumatoid nodules, 1; granuloma, 2; nocardia, 1; infarct, 1; hamartoma, 4; scar, 1; cytomegalovirus pneumonia, 1), metastatic malignancy in 20 patients, and bronchogenic carcinoma in 13 patients. Five patients found at thoracoscopic pulmonary resection to have bronchogenic cancer had adequate pulmonary function and therefore underwent formal segmentectomy (3) or lobectomy (2). Thoracoscopic pulmonary resection was the only operation performed on patients with benign disease, patients with metastatic lesions, and selected patients with limited stage bronchogenic carcinoma at increased risk for thoracotomy.(ABSTRACT TRUNCATED AT 250 WORDS)  相似文献   
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The effect of xylometazoline, an alpha-adrenergic agonist, on ciliary beat frequency (CBF) was tested on samples of human nasal epithelium in vitro. Ciliated tissue was obtained from the inferior nasal turbinates of five normal individuals. CBF was measured from video recordings of ciliary activity using a computer-assisted photometric technique. The mean CBF of cells from the five subjects, followed for 40 min without xylometazoline, was 12.0 +/- 1.1 Hz. All concentrations of xylometazoline significantly decreased ciliary beat frequency. After a 10-min exposure, the mean CBF dropped to 3.8 +/- 0.4 with 0.1% xylometazoline, 4.9 +/- 1.0 with 0.05%, and 8.1 +/- 0.9 with 0.025%. Washing with control culture medium at least partially reversed the inhibition within 10 min. Phentolamine (10(-3) M), an alpha-adrenergic antagonist, did not alter CBF significantly when used alone, but partially blocked the strong cilioinhibitory effect of xylometazoline. This action of xylometazoline is similar to that of several commercially prepared decongestants that contain potentially ciliotoxic preservatives in addition to alpha-adrenergic agonists and supports the view that alpha-adrenergic agonists act directly on ciliated cells to inhibit ciliary activity.  相似文献   
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BACKGROUND: The '2-week rule' for the referral of patients with potential cancers is an important but controversial development. AIMS: To investigate the 2-week rule for women with breast problems from the perspective of the patients and of healthcare professionals. DESIGN OF STUDY: Qualitative study using semi-structured interviews. SETTING: Patients referred to two breast care units and professionals from primary and secondary care in Teesside and Hartlepool. METHOD: Semi-structured interviews with a purposive sample of 12 patients referred under the 2-week rule and 20 professionals. RESULTS: All women experienced considerable worries in the time leading up to diagnosis. This affected relationships with others, and they used selective telling to help maintain control over their own anxiety and prevent anxiety in others. They were not aware of the 2-week rule as a new initiative, but wanted quick referral to assure them that they did not have cancer. Patients felt they needed more information about breast symptoms and the referral process. Comments about communication with professionals, both good and poor, were frequent in their accounts, which contrasted with the absence of such concerns in the accounts of the professionals. The professionals thought that the 2-week rule was advantageous in reducing anxiety, but thought that disadvantages included longer waits for patients referred outside the rule and increased pressure on hospital services. Cultural changes, including increased patient assertiveness and 'breast awareness', were considered important contextual factors. General practitioners (GPs) were concerned about missing diagnoses in patients statistically unlikely to have carcinomas. CONCLUSION: Differences in emphasis were apparent, with patients wanting to be assured that they did not have cancer, specialists concerned both about increased workload and the impact on patients with cancers, and GPs anxious about missing diagnoses. The 2-week rule compromises professional autonomy, which partially accounts for the anger directed against it. There is a need for patients to have more information, and they place great value on good communication. All patient responders experienced significant distress while waiting to be seen.  相似文献   
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