In: Smoking17 Aug 2015
The detrimental effects of smoking on adult pulmonary function has led to concern that passive smoking (the exposure to smoke from others cigarettes) may be harmful, especially to young children. The major studies that have examined the relation between parental smoking and childhood symptoms and pulmonary function are summarized in Table 3. Of these studies, all but four are cross-sectional analytic surveys. In such studies, childrens’ symptoms and/or pulmonary function are examined at a single point in time and related to parental smoking habits. Inference from cross-sectional analytic surveys is limited by the fact that predisposition to decreased pulmonary function may have preceded the exposure to smoke. It is known, for example, that smokers have smaller babies (not only because of smoking, but probably because of other factors associated with smoking). It is possible that lung development, or predisposition to pulmonary infection, may differ in these smaller babies. In addition, analytic surveys tell us about symptoms only over a relatively short period of time. Thus, while cough or respiratory infections might not be different in ten-year-olds depending on parental smoking, differences may have been apparent earlier in life, or develop later.
In: Lung Injury13 Aug 2015
The maximum obtainable monitoring time was 4,320 hours (20 patients, each patient monitored nine times 24 hours). Three hundred and forty-eight hours were not recorded. Another 360 hours were excluded as they contained less than 50 minutes of unambiguous ECG-recording. Thus, our results are based on 3,612 of3,972 recorded hours, 1,190 with placebo, 1,227 with theophylline!, and 1,195 with enprofylline.
Since the early 1920s the medical literature has been replete with reports of changes induced in normal and diseased tissues following radiation therapy for various malignancies. This is particularly so in Hodgkins disease of the thorax. The case presented here describes the development of dense calcifications in previously normal prestemal soft tissues following radiotherapy in a patient with Hodgkin’s disease of the mediastinum. To the authors knowledge, such radiation-induced changes have not been reported previously.
A 32-year-old white woman was diagnosed at the age of 18 as having nodular sclerosing Hodgkins disease of the mediastinum, stage IIA. Following staging laparotomy and splenectomy, she underwent radiotherapy with 4,000 rads to the upper mantle and “in verted-Y” fields, along with splenic pedicle radiation. She also received six courses of MOPP chemotherapy (nitrogen mustard, Oncovin, procarbazine and prednisone). She tolerated therapy well and achieved complete remission; however, within six months she developed postradiation pericarditis. This was successfully treated with a partial pericardectomy via a left posterior thoracotomy. To get aquanted with such a notion as thoracotomy you may just make one step namely to check out Canadian health care mall official LiveJournal.
The intragastric balloon was successfully positioned in all patients. However, in one patient the balloon was removed a few days after placement because of gastric intolerance. Therefore, a total of 17 patients successfully completed the 6-month treatment protocol with the intragastric balloon. No significant complications were observed.
The clinical characteristics of the 17 morbidly obese patients before insertion of the intragastric balloon and after its removal are reported in Table 1. At baseline, all subjects were morbidly obese patients (BMI range, 46.0 to 82.0 kg/m2) with a substantial amount of visceral fat accumulation, as evidenced by the high values of the waist circumference and the sagittal abdominal diameter. Pulmonary function testing revealed restrictive ventilatory impairment with further significant reductions in oxygen saturation in the clinostatic position (p 20 events/h in all patients, and > 50 events/h in 13 of 17 patients (76.5%).
Of 347 endomyocardial biopsies performed on 49 patients, 47 specimens demonstrated histologic evidence of acute rejection. In this study, acute rejection was characterized by the presence of interstitial edema with pyrinophilic lymphocytes, with or without myonecrosis. Simultaneous immune activation of peripheral blood lymphocytes occurred with 33 biopsy specimens positive for acute rejection (Table 1). Thus, the morphologic evaluation of lymphocytes demonstrated a 70 percent sensitivity in detecting an episode of acute cardiac rejection. The predictive value of a positive test (positive immune activation of lymphocytes) was 39 percent. Significant differences in absolute numbers of total lymphocytes, T-cell subsets (helper cells, cytotoxic-suppressor cells, cytotoxic cells, resetting T cells, mitogenic T cells) and helper/suppressor ratios analyzed via a Students t test revealed no consistent, statistically significant differences in absolute numbers of the above-described cell populations. During acute cardiac rejection, the helper/ suppressor ratio was variable, with high, low, and normal values noted. Read the rest of this entry »
Acute cardiac rejection may be difficult to diagnose in orthotopic cardiac transplant patients. The endomyocardial biopsy is the current gold standard for detection of acute rejection. This study examined the feasibility of morphologic evaluation of peripheral blood lymphocytes to provide a sensitive indicator of acute cardiac rejection.
Material and Methods
Peripheral blood lymphocytes of 49 orthotopic cardiac transplant patients were repeatedly examined over three years. Immunosuppressive therapy for these patients included preoperative antithymocyte globulin, followed by an intraoperative dose of methylpred-nisone and antithymocyte globulin. The postoperative regimen consisted of individualized doses of horse or rabbit antithymocyte globulin, cyclosporine A, prednisone and azathioprine. Rejection episodes were treated with methylprednisone; refractory acute rejection was rarely treated with the mouse monoclonal antibody OKT3. Read the rest of this entry »
Blood pressure, heart rate, hematocrit, CVI? ECG, urine output, and blood gases are conventional measurements that are well recognized descriptors of acute crises as well as the end stages of circulatory failure. Although these variables should be monitored and corrected if abnormal, they are neither sensitive nor accurate descriptors of circulatory decompensation in the perioperative period. However, the use of PA catheters in surgical patients is considered to be highly controversial because of the lack of adequately controlled clinical trials. Recently, Robin has called attention to the fact that use of PA catheters has assumed epidemic proportions without clinical trials establishing improved outcome from their use. Moreover, hospitals and third-party payers view PA catheterization in the surgical patient as a potentially morbid and unnecessary expense. Read the rest of this entry »
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