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1.
Although several studies on tuberculous (TB) pleurisy suggest that the addition of corticosteroids to anti-TB therapy may have beneficial effects, these agents are not used routinely. To assess the effects of short-term oral prednisone therapy in TB pleurisy, 74 patients were randomly assigned in a double-blind fashion to treatment with either placebo or prednisone at a dose of 0.75 mg/kg/d for up to 4 weeks with gradual reduction over an additional 2 weeks. All subjects received a standard 3-drug anti-TB chemotherapy regimen for 6 months. TB pleurisy was diagnosed by histologic study and/or culture of pleural biopsy specimens obtained at thoracoscopy. Complete drainage of the effusion was performed simultaneously. Outcome measures were assessed periodically for 24 weeks, including indexes of morbidity and pleural thickening. After randomization, four patients were excluded from the final analysis. Of the 70 patients analyzed, 34 received prednisone and 36 received placebo. Demographic and clinical characteristics of the treatment groups were comparable at the time of hospital admission. Although a statistically significant improvement in symptoms occurred earlier in the prednisone group (8 weeks) than in the placebo group (12 weeks), between-group comparison showed no significant differences at any of the follow-up evaluations. The proportion of subjects in the prednisone group (53.1%) with residual pleural thickening at 6 months did not differ significantly from that of the placebo group (60%). Pleural effusions did not recur in any of the patients. Initial complete drainage of the effusion was associated with greater symptomatic improvement than any subsequent therapy. We conclude that standard anti-TB therapy and early complete drainage is adequate for the treatment of TB pleurisy. The addition of short-term oral prednisone therapy neither results in clinically relevant earlier symptom relief nor confers a beneficial effect on residual pleural thickening.  相似文献   

2.
The utility of clonidine for hypertensive patients presenting for major vascular procedures remains debatable. Twenty-one hypertensive patients presenting for aortic surgery were given clonidine (n = 11) or placebo (n = 10) in a double-blind, randomized manner. Clonidine was administered 6 micrograms/kg per os 120 min before induction of anesthesia and 3 micrograms/kg intravenously (i.v.) over 60 min from aortic declamping to skin closure. Anesthesia was induced with alfentanil 20 micrograms/kg, midazolam, and atracurium and maintained with nitrous oxide 70%, an alfentanil infusion (0.25 microgram.kg-1. min-1), and isoflurane. Anesthetic requirements, circulatory variables, interventions, and isoproterenol dose-response curves (pre- and postoperatively) were determined. Plasma concentrations of clonidine, alfentanil, and vasoactive hormones were measured. When the clonidine group was compared with the placebo group, (a) isoflurane, alfentanil, and midazolam requirements were reduced by 38%, 42%, and 41%, respectively (P = 0.04, 0.03, 0.0002, respectively); (b) supplemental circulatory and anesthetic adjustments were reduced by 51% (P = 0.0006); (c) interventions with vasopressors were not significantly increased (placebo: two; clonidine: five); (d) systolic and mean arterial pressures and heart rate were reduced; (e) increases in norepinephrine, epinephrine, and plasma renin activity were suppressed, whereas vasopressin surge was attenuated; and (f) chronotropic response to isoproterenol was unaffected. Clonidine was effective in reducing anesthetic requirements and in improving circulatory stability in hypertensive patients presenting for major vascular procedures.  相似文献   

3.
4.
BACKGROUND: Demonstration and quantification of site-specific intracoronary administration of compounds has been confined thus far to the experimental animal laboratory. The aim of this study was to describe a scintigraphic method to demonstrate site-specific intracoronary drug delivery in humans. The methods allow on-line visualization and off-line quantification of site-specifically infused gamma-emitting compounds. METHODS AND RESULTS: In 12 patients after balloon angioplasty, 99mTc-labeled heparin was administered at the site of dilatation by use of a coil balloon. Both the infusion period and the washout period after the end of infusion were monitored with a gamma-camera. A curve of counts per pixel as a function of time was derived that showed an accumulation phase during infusion followed by washout phase after the end of infusion. Both phases were fitted by regression analysis and showed a linear accumulation pattern and a biexponential washout pattern. After correction for background counts, 99mTc decay, and body attenuation, peak heparin amount and regional bioavailability were calculated. Peak amount was defined as the initial point of the slow washout component of the biexponential curve (elimination component), and regional bioavailability was defined as the area under the curve of accumulation and washout phase. Half-life and retention time, define as seven half-lives, were obtained by use of the elimination component after correction for 99mTc decay. Mean peak delivered amount was 45 +/- 44 IU (236 +/- 228 micrograms), corresponding to an efficiency of delivery ranging from 1% to 8% of the totally infused dose. Total regionally bioavailable heparin reached 244 +/- 194 IU.h (1.28 +/- 1.01 mg.h). Retention time varied from 12 to 90 hours (mean, 50:33 +/- 22:50 hours:minutes). CONCLUSIONS: Site-specific intracoronary heparin delivery after angioplasty by means of the coil balloon was demonstrated in humans, and regional pharmacokinetics was quantified by use of a radioisotopic technique.  相似文献   

5.
BACKGROUND: Nicotine replacement therapies have proved to be of value in smoking cessation. However, not all smokers can use the nicotine gum or nicotine patch owing to side effects. In addition, the absorption of nicotine from these formulas is slow compared with smoking. A nicotine nasal spray delivers nicotine more rapidly. The objective of this study was to evaluate the efficacy and safety of the nicotine nasal spray for smoking cessation. METHODS: Subjects were recruited through advertisements in newspapers and among patients referred to the smoking cessation clinic at Sahlgren's Hospital, G?teborg, Sweden. Two hundred forty-eight smokers were treated in small groups with eight counseling sessions over 6 weeks. At their first group session, subjects were randomized to a group receiving nicotine spray (n = 125), 0.5 mg of nicotine per single spray, or to a placebo group (n = 123). The procedure was double blind. Success rates were measured up to 12 months. The nonsmoking status was verified by expired carbon monoxide less than 10 ppm. RESULTS: Significantly more subjects in the nicotine group were continuously abstinent for 12 months than in the placebo group (27% vs 15%; odds ratio, 2.16; 95% confidence interval, 1.15 to 4.12). Ten of the 34 abstinent subjects in the nicotine group used the spray for 1 year. Mild or moderate side effects were rather frequent for both sprays, but they were significantly more for the nicotine spray. Subjects with high scores (> 7) on Fagerstr?m's tolerance questionnaire had a significantly lower success rate with placebo than with the nicotine spray. For subjects with low scores, there was no difference. CONCLUSION: Nicotine nasal spray in combination with group treatment is an effective aid to smoking cessation.  相似文献   

6.
Stress echocardiography and perfusion scintigraphy are both useful techniques in the assessment of myocardial viability. The use of one technique or the other as the first choice test depends mainly on each hospital's experience. Perfusion scintigraphy should be chosen as the first technique in the following situations: a) hospitals with little experience in stress echocardiography and a good Nuclear Medicine department; b) patients with a bad acoustic window in rest echocardiography; c) contraindication of a high dobutamine dose, and d) need of quantification of viable area. When having chosen echocardiography as the first technique, perfusion scintigraphy is indicated when the response to dobutamine of the asynergic area does not allow the confirmation or the rejection of the presence of viability.  相似文献   

7.
OBJECTIVE: To assess the effects of dobutamine at a rate of 5 micrograms/kg/min on hemodynamics and gastric intramucosal acidosis in patients with hyperdynamic septic shock treated with epinephrine. DESIGN: A prospective, interventional, clinical trial. SETTING: An adult, 16-bed medical/surgical intensive care unit of a university hospital. PATIENTS: Twenty septic shock patients with a mean arterial pressure of > 75 mm Hg and a cardiac index of > 3.5 L/min/m2. INTERVENTIONS: After baseline measurements (H0), each patient received dobutamine at a rate of 5 micrograms/kg/min. Baseline measurements included: hemodynamic parameters, tonometric parameters, arterial and mixed venous gases, and arterial lactate concentrations. These measurements were repeated after 1 (H1), 2 (H2), and 3 (H3) hrs. After H2 measurements, dobutamine was stopped. The patients were separated into two groups according to their PCO2 gap (tonometer PCO2-PaCO2). The increased PCO2 gap group was defined by a PCO2 gap > 8 torr (> 1.1 kPa) (n = 13), and the normal PCO2 gap group by a PCO2 gap < or = 8 torr (< or = 1.1 kPa)(n = 7). MEASUREMENTS AND MAIN RESULTS: Dobutamine at 5 micrograms/kg/min had no significant effects on mean arterial pressure, heart rate, cardiac index, systemic vascular resistance, oxygen delivery, and oxygen consumption in epinephrine-treated septic shock. No patients developed arrhythmia or electrocardiographic signs of myocardial ischemia. During dobutamine infusion, arterial lactate concentration decreased from 5.1 +/- 0.4 in the increased PCO2 gap group and 4.2 +/- 0.4 in the normal PCO2 gap group to 3.9 +/- 0.3 and 3.5 +/- 0.3 mmol/L, respectively (p < .01). The PCO2 gap decreased and gastric intramucosal pH increased in the increased PCO2 gap group from 12 +/- 0.8 (1.6 +/- 0.1 kPa) to 3.5 +/- 0.8 torr (0.5 +/- 0.1 kPa) (p < .01) and from 7.11 +/- 0.03 to 7.18 +/- 0.02 (p < .01), respectively, and did not change in the normal PCO2 gap group. After stopping dobutamine infusion, the PCO2 gap and intramucosal pH returned to baseline values in the increased PCO2 gap group. CONCLUSION: The addition of 5 micrograms/kg/min of dobutamine added to epinephrine in hyperdynamic septic shock selectively improved the adequacy of gastric mucosal perfusion without modification in systemic hemodynamics.  相似文献   

8.
In vitro, IL-10 inhibits T cell proliferation and LPS-induced monocyte production of IL-1, TNF-alpha, IL-6, and IL-8. We studied the safety and immunomodulatory effects of IL-10 administration in humans. Seventeen healthy volunteers received a single i.v. bolus injection of either human IL-10 (1, 10, or 25 micrograms/kg) or placebo. Routine safety parameters, lymphocyte phenotypes, T cell proliferative responses, and stimulus-induced cytokine production were assessed before and 3, 6, 24, and 48 h after injection. There were no adverse symptoms or signs after IL-10 administration. A transient neutrophilia and monocytosis that peaked at 6 h (45-160% above base line) was observed. However, lymphocyte counts fell by 25% 3 and 6 h after the injection (p < 0.01). In particular, lymphocytes expressing the T cell surface markers CD2, CD3, CD4, CD7, and CD8 were significantly decreased. Mitogen-induced T cell proliferation was suppressed by up to 50% (p < 0.01) in the two higher dose groups. Significant dose-dependent inhibition (65-95%) of TNF-alpha and IL-1 beta production from whole blood stimulated ex vivo with endotoxin occurred after each dose of IL-10. In contrast, there was no reduction in the production of their respective antagonists, TNF soluble receptor p55 or IL-1 receptor antagonist. We conclude that a single intravenous injection of IL-10 is safe in humans, has inhibitory effects on T cells, and suppresses production of the pro-inflammatory cytokines TNF-alpha and IL-1 beta.  相似文献   

9.
A 44 yr-old female with severe pulmonary emphysema and reduced alpha-1-protease inhibitor (alpha1-PI) serum levels developed an acute anaphylactic reaction following the third intravenous infusion of human alpha1-PI which was administered to prevent the progression of pulmonary emphysema. Specific immunoglobulin E-antibodies against human alpha1-PI could be demonstrated in the patient's serum using an enzyme allergosorbent test. Because of the risk of further severe anaphylactic reaction, the replacement therapy with alpha1-PI was discontinued. Physicians should be aware of this rare complication.  相似文献   

10.
STUDY DESIGN: A prospective, randomized, double-blind study comparing high-dose methylprednisolone with placebo. OBJECTIVES: To evaluate the efficacy of high-dose methylprednisolone when administered within 8 hours after whiplash injury. SUMMARY OF BACKGROUND DATA: Whiplash injury often results in chronic symptoms. The management of whiplash injuries is controversial, and pharmacologic therapy has received little evaluation. In recent reports, dysfunction of the central nervous system has been indicated in several cases. Methylprednisolone administered within 8 hours after the injury to patients with acute spinal cord injury has been demonstrated to improve the outcome. This procedure was also adopted in a randomized study of cases of whiplash injury in car accidents. METHODS: Forty patients, 22 men and 18 women with a mean age of 35 years (range, 19-65), were included in the study, 20 in each of two groups. They were treated for whiplash injury, which they had sustained in car accidents. The patients were enrolled if their diagnoses were complete and treatment had begun within 8 hours after injury. Disabling symptoms severe enough to prevent the patient from returning to work, number of sick days before and after injury, and sick-leave profile after injury were used as parameters for the evaluation of the effects of the treatment. Baseline demographic data were controlled for when statistical analysis had been performed. RESULTS: At the follow-up examination 6 months after initial treatment, there was a significant difference in disabling symptoms between the actively treated patients and the placebo group (P = 0.047), total number of sick days (P = 0.01), and sick-leave profile (P = 0.003). CONCLUSIONS: The results of this study indicate that acute treatment with high-dose methylprednisolone may be beneficial in preventing extensive sick leave after whiplash injury. However, the number of patients studied was small, and therefore further prospective, controlled studies are needed.  相似文献   

11.
STUDY DESIGN: A prospective, randomized, and controlled study was conducted. OBJECTIVES: To evaluate two training programs, both of which started immediately after lumbar discectomy. SUMMARY OF BACKGROUND DATA: In previous studies, patients began physiotherapy between 4 weeks and 60 months after surgery. No studies have been conducted to evaluate a physiotherapy program that begins immediately after surgery. METHOD: Twenty-six patients were treated according to an early active training program. Twenty-six patients were treated with a traditional, less active training program (control group). All patients were examined immediately before and after surgery and 3, 6, 12, and 52 weeks after surgery by an unbiased observer. Two years after surgery, patients completed a questionnaire. Range of motion of the lumbar spine and straight leg raising were measured. pain intensity and location was measured by a visual analog scale. The duration of sick leave was documented. RESULTS: Six and 12 weeks after surgery, patients with dominating residual leg pain had significantly less intense pain in the early active training group than those in the control group (P < 0.05). Twelve weeks after surgery, range of motion of the lumbar spine was significantly more increased in the early active training group (P < 0.01). One year after surgery, there was no significant difference between the groups regarding the duration of sick leave, results in a positive straight leg raising, or pain intensity. Twenty-two (88%) patients in the early active training group and 16 (67%) in the control group were satisfied with the treatment outcome 2 years after surgery (P < 0.10). CONCLUSIONS: Patients rehabilitated according to the early active training program had a better short-term outcome of objective values. At 2 years' follow-up, more patients were satisfied with the result of the operation. The early active treatment program is recommended.  相似文献   

12.
In a double-blind, parallel, placebo-controlled study, 203 patients with post-operative dental pain following the extraction of one or two bony impacted third molars were randomized to receive a single dose of naproxen sodium 220 mg, ibuprofen 200 mg or placebo. Pain intensity and pain relief were assessed at intervals for 12 hours postdose. Both active drugs demonstrated superior analgesic efficacy over placebo. Naproxen sodium and ibuprofen were comparable both in onset of analgesic action and in pain relief. From 1 to 12 hours postdose, naproxen sodium showed a trend for superior analgesic efficacy compared with ibuprofen; this trend reached statistical significance at the 12-hour time point. Both drugs were well-tolerated and effective analgesics for postoperative dental pain.  相似文献   

13.
A prospective, randomized, double-blind study was performed to evaluate three different means of fixing tibial components during total knee arthroplasty. Eleven components fixed with cement, ten hydroxyapatite-coated components fixed without cement, and ten noncoated components fixed without cement were studied. A posterior cruciate ligament-retaining total condylar implant was used. Micromotion of the components was assessed with roentgen stereophotogrammetric analysis during the two-year follow-up period. There were no significant differences among the patients with regard to age (mean [and standard deviation], 68 +/- 11.6 years), body-mass index (mean, 23 +/- 2.8 kilograms per square meter), or stage of osteoarthrosis (mean, 4 +/- 2.4 according to the classification system of Ahlback and 5 +/- 0.6 according to that of Larsen et al.). The diagnosis was osteoarthrosis in five knees, and it was rheumatoid arthritis in twenty-six. The clinical scores were similar among the study groups. According to the system of the Knee Society, the mean preoperative functional score was 10 +/- 2.9 points and the mean preoperative knee score was 24 +/- 3.2 points. At the two-year follow-up evaluation, these scores were 41 +/- 8.3 and 79 +/- 3.2 points, respectively. A significant difference with regard to micromotion was found between the noncoated components fixed without cement and the hydroxyapatite-coated components fixed without cement as well as between the noncoated components fixed without cement and the components fixed with cement (p < 0.001, analysis of variance). The hydroxyapatite-coated components fixed without cement and the components fixed with cement both had far less micromotion along the longitudinal axis (subsidence) throughout the follow-up period than did the noncoated components fixed without cement. At the two-year follow-up evaluation, the subsidence of the noncoated components was -0.73 +/- 0.924 millimeter, the subsidence of the cemented components was -0.05 +/- 0.109 millimeter, and the subsidence of the hydroxyapatite-coated components was -0.06 +/- 0.169 millimeter. The cemented components as well as the hydroxyapatite-coated components also had less translation along the transverse axis (p < 0.001, analysis of variance) and the sagittal axis (p < 0.001, analysis of variance) compared with the noncoated components. In conclusion, micromotion of hydroxyapatite-coated tibial components fixed without cement was similar to that of tibial components fixed with cement. Therefore, hydroxyapatite, a biological mediator, may be necessary for the adequate fixation of tibial components when cement is not used.  相似文献   

14.
We have carried out a randomised, controlled trial on 70 patients having unilateral total knee replacement in which transfusion was either with homologous bank blood or by reinfusion of unwashed blood salvaged after operation. No complications or adverse effects were observed from reinfusion. The need for bank blood was reduced by 86% in the reinfusion group but, more importantly, the number of infective episodes was significantly less when the use of bank blood was avoided. The mean length of stay in hospital was also reduced by more than two days.  相似文献   

15.
OBJECTIVE: To describe the characteristic cytologic features of fine needle aspirates (FNAs) of primary extragonadal germ cell tumors (PEGCTs). STUDY DESIGN: Thirteen patients with PEGCTs, including 2 seminomas, 2 mixed germ cell tumors, 3 immature teratomas, 1 choriocarcinoma and 5 yolk sac tumors (YSTs) were studied. The final diagnosis of PEGCT in all cases was established by histologic examination of the tumor tissues. Fine needle aspiration was done on either the primary tumor or metastatic foci. The aspirates were stained with one of the Romanovsky stains and Papanicolaou stain. RESULTS: Each type of PEGCT has its own morphologic characteristics. In seminoma, the tumor cells are large and noncohesive, with one to several distinct nucleoli; some lymphocytes are also present. YSTs show many pleomorphic cells with vacuoles in the cytoplasm and nuclei; tumor cells frequently aggregate in a microglandular or papillary pattern. Choriocarcinoma consists of syncytiotrophoblasts and cytotrophoblasts. The former are very large cells with eosinophilic cytoplasm, one to several nuclei and distinct nucleoli; the latter are medium-sized cells with vacuolated, basophilic cytoplasm and eccentric nuclei. Immature teratomas are composed of a mixture of cell types, including elongated epithelioid cells, mesenchymal cells and many large, naked, amorphous nuclei with a homogeneous chromatin pattern. Diagnosis of mixed germ cell tumor is difficult but can be made if two or more subtypes of tumor cells are observed in the FNA. CONCLUSION: Cytologic examination of FNAs of primary or metastatic lesions of PEGCTs, stained either with Romanovsky or Papanicolaou stain, is of diagnostic value for such diseases. The use of immunochemistry can help to confirm the cytologic impression.  相似文献   

16.
Thirty-three patients were assessed for suitability for time-limited psychotherapy (TLP). A battery of outcome measures was composed of Ss self-report measurements and objective judgments by external ("masked") raters. Ss were randomly assigned to either the experimental group, which received TLP immediately, or the control group, whose TLP was delayed for 3 months. Ss were evaluated on outcome measures at TLP termination and again at 6 and 12 months after termination. Significant improvement was observed in the experimental group after TLP, but the control Ss did not show any systematic changes after waiting. However, after TLP, the control Ss improved significantly. The gains achieved after therapy were stable in both groups after 6- and 12-month follow-ups. (PsycINFO Database Record (c) 2010 APA, all rights reserved)  相似文献   

17.
A 4-week trial tested the effects of 4 doses (placebo, 0.1 mg/d, 0.2 mg/d, and 0.3 mg/d) of transdermal clonidine on smoking cessation and nicotine withdrawal. After a 1-week baseline, smokers (N?=?72) started the drug and tried to quit by Week 3. Significantly fewer smokers who received a placebo were abstinent at 5 days after quitting as compared with smokers who received clonidine at any dose (19% vs 57%, respectively, p?=?.007). Blood clonidine concentration interacted with nicotine dependence (p?  相似文献   

18.
Roxatidine acetate, a new H2 receptor antagonist, was compared with ranitidine in the treatment of duodenal ulcers in a double-blind multicentre study. Eighty-four patients with endoscopically proven duodenal ulcer were randomized to receive 150 mg roxatidine acetate or 300 mg ranitidine at bedtime. Repeat endoscopy was performed after 4 weeks (25-33 days) and if the ulcer had not healed, another endoscopy was performed after a further 4 weeks of treatment. Using per protocol analysis 73.6% of ulcers treated with roxatidine healed at 4 weeks compared to 72.2% of ulcers treated with ranitidine (P = NS). The healing rates at 8 weeks were 92% with roxatidine and 83.3% with ranitidine (P = NS). Using equivalence tests, the healing rate of roxatidine was found to be equivalent to that of ranitidine within a 20% region. Roxatidine users took significantly less antacids than ranitidine users (P < 0.05). There were no significant adverse effects due to roxatidine or ranitidine. Roxatidine is a safe effective drug in the treatment of duodenal ulcers with a healing rate comparable to that of ranitidine.  相似文献   

19.
OBJECTIVE: To determine whether perioperative steroids affect the outcome of patients who undergo palatoplasty. DESIGN: A prospective, double-blind, randomized study. SETTING: A university medical center. PATIENTS: Twenty patients undergoing primary repair of a cleft palate. INTERVENTION: A prospective double-blind technique was used to randomly assign patients to receive a placebo or dexamethasone sodium phosphate perioperatively. MAIN OUTCOME MEASURE: Patients were monitored for postoperative airway distress, fever, oral fluid intake, days of hospitalization, and wound healing. RESULTS: The use of perioperative steroids was associated with shorter hospitalizations. No adverse sequelae from the administration of steroids were identified. CONCLUSIONS: In our current managed care environment, the use of perioperative steroids may play an important role in reducing health care costs.  相似文献   

20.
The objective of this study was to investigate the efficacy and safety of bromocriptine (BRC) as an adjunct to conventional treatment in systemic lupus erythematosus (SLE). A prospective, double-blind, randomized, placebo-controlled study compared BRC at a fixed daily dosage of 2.5 mg with placebo. Patients were followed for 2-17 months (mean 12.5 months). Disease activity was assessed using the SLE Disease Activity Index (SLEDAI), numbers of flares were recorded, and serum prolactin (PRL) levels were obtained at intervals during the study. Patients were allowed to take prednisone and immunosuppressive drugs. Sixty-six patients with SLE entered the study. Thirty-six were treated with BRC, and 30 controls received placebo. Sixteen patients were removed from the study during the treatment period: five in each group left the study because of adverse effects, five became pregnant, and one patient who took placebo died with central nervous system lupus. Four patients in the BRC treatment group and three patients in the placebo group moved away or stopped coming for study visits for unknown reasons, and were lost to follow-up during the course. At entry, serum PRL was (mean+/-s.d.) 24.8 ng/ml+/-18.4 in the BRC treatment group. This value fell to 5.8+/-9.0 after 12 months of treatment. Corresponding PRL values in controls were 23.7+/-22.1 pretreatment and 20.3+/-14 after 12 months. PRL levels in BRC-treated subjects were significantly lower than levels in control subjects after 3, 6, 9, and 12 months of treatment. The SLEDAI score on the fifth protocol visit was decreased significantly in the BRC group vs controls: 0.9+/-1.4 vs 2.6+/-4.5 (P < 0.05). Although the absolute number of flares in each group was similar, the mean number of flares/patient/month was decreased significantly in the BRC group compared to the control group (0.08+/-0.1 vs 0.18+/-0.2, P = 0.03). Long term treatment with a low dose of BRC appears to be a safe and effective means of decreasing SLE flares in SLE patients.  相似文献   

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