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Combined radiotherapy and chemotherapy with bleomycin and methotrexate for advanced inoperable head and neck cancer: update of a Northern California Oncology Group randomized trial.

Between 1978 and 1984, the Northern California Oncology Group (NCOG) conducted a randomized trial to study the efficacy of combined radiotherapy (RT) and chemotherapy (CT) for stage III or IV inoperable head and neck cancer. One hundred four patients were randomized to receive: (1) RT alone, or (2) RT plus CT. RT consisted of 7,000 cGy to the involved areas and 5,000 cGy to uninvolved neck at 180 cGy/fraction, five fractions/wk. CT consisted of bleomycin, 5 U intravenously (IV), twice weekly during RT, followed by bleomycin, 15 U IV, and methotrexate, 25 mg/m2 IV weekly for 16 weeks after completion of RT. Fifty-one patients in the RT alone group and 45 in the combined treatment group were evaluable. The local-regional complete response (CR) rate was 45% v 67% (P = .056); the 2-year local-regional control rate, including salvage surgery, was 26% v 64% (P = .001); and the incidence of distant metastasis was 24% v 38% (P greater than .25), for the RT alone and RT plus CT groups, respectively. The relapse-free survival curves were significantly different (P = .041), favoring the combined treatment. However, the survival curves were not significantly different (P = .16). Patient compliance to maintenance CT was poor. Bleomycin significantly increased the acute radiation mucositis, although the difference in late normal tissue toxicity was not statistically significant. Thus, bleomycin and concurrent RT produced a more favorable CR rate, local-regional control rate, and relapse-free survival, but the difference in survival was not statistically significant.

Adult↗

Meta-analysis of randomized trials comparing off-pump with on-pump coronary artery bypass graft patency.

BACKGROUND: Off-pump coronary artery bypass graft surgery (OPCAB) is increasingly becoming a widely used technique and challenges conventional on-pump coronary artery bypass grafting as the standard surgical therapy for coronary artery disease. Little information, however, is available concerning postoperative performance of bypass grafts done with this new technique. The aim of this study is to assess differences in graft patency between OPCAB and coronary artery bypass grafting by meta-analysis of data published in randomized trials. METHODS: A literature search for the period beginning January 1990 until December 2004 supplemented with manual bibliographic review was performed for all peer-reviewed English-language publications. A systematic overview (meta-analysis) of randomized trials was conducted to assess differences between OPCAB and coronary artery bypass grafting in graft occlusion rates. RESULTS: Literature search yielded five comparable randomized studies, for a total of 872 and 998 grafts performed during OPCAB and coronary artery bypass grafting procedures, respectively. Meta-analysis of these studies showed an increased risk of graft occlusion in the OPCAB group of patients, both when all the studies were analyzed together (odds ratio, 1.51; 95% confidence intervals, 1.15 to 1.99; p = 0.003), and when low-quality (odds ratio, 1.46; 95% confidence intervals, 1.05 to 2.03; p = 0.02) and high-quality (odds ratio, 1.65; 95% confidence intervals, 0.99 to 2.75; p = 0.05) studies were analyzed separately. CONCLUSIONS: Cumulative analysis of the few prospective randomized studies currently available in the literature documents a reduction in postoperative patency of coronary artery bypass grafts performed during OPCAB procedures. The risk of reduced graft patency needs to be considered when choosing OPCAB as tailored strategy for selected patients.

Coronary Artery Bypass↗

Autologous chondrocyte implantation compared with microfracture in the knee. A randomized trial.

BACKGROUND: New methods have been used, with promising results, to treat full-thickness cartilage defects. The objective of the present study was to compare autologous chondrocyte implantation with microfracture in a randomized trial. We are not aware of any previous randomized studies comparing these methods. METHODS: Eighty patients without general osteoarthritis who had a single symptomatic cartilage defect on the femoral condyle in a stable knee were treated with autologous chondrocyte implantation or microfracture (forty in each group). We used the International Cartilage Repair Society, Lysholm, Short Form-36 (SF-36), and Tegner forms to collect data. An independent observer performed a follow-up examination at twelve and twenty-four months. Two years postoperatively, arthroscopy with biopsy for histological evaluation was carried out. The histological evaluation was done by a pathologist and a clinical scientist, both of whom were blinded to each patient's treatment. RESULTS: In general, there were small differences between the two treatment groups. At two years, both groups had significant clinical improvement. According to the SF-36 physical component score at two years postoperatively, the improvement in the microfracture group was significantly better than that in the autologous chondrocyte implantation group (p = 0.004). Younger and more active patients did better in both groups. There were two failures in the autologous chondrocyte implantation group and one in the microfracture group. No serious complications were reported. Biopsy specimens were obtained from 84% of the patients, and histological evaluation of repair tissues showed no significant differences between the two groups. We did not find any association between the histological quality of the tissue and the clinical outcome according to the scores on the Lysholm or SF-36 form or the visual analog scale. CONCLUSIONS: Both methods had acceptable short-term clinical results. There was no significant difference in macroscopic or histological results between the two treatment groups and no association between the histological findings and the clinical outcome at the two-year time-point. LEVEL OF EVIDENCE: Therapeutic study, Level I-1a (randomized controlled trial [significant difference]). See Instructions to Authors for a complete description of levels of evidence.

Adult↗

Prevention of alloimmunization in patients with acute leukemia by use of white cell-reduced blood components--a randomized trial.

Platelet refractoriness arising from HLA alloimmunization is a serious complication of transfusion therapy. In a prospective randomized trial, white cell (WBC)-reduced blood components were compared to standard platelet and red cell concentrates with respect to alloimmunization, refractoriness, and platelet increments after transfusion. Sixteen of 31 adult acute leukemia patients received only WBC-reduced platelet concentrates (PCs) and red cells (RBCs), with fewer than 10(6) WBCs per unit. Fifteen control patients received standard blood components with a mean of 0.1 x 10(9) (PCs) and 1 x 10(9) (RBCs) WBCs per unit. Platelet loss during cotton-wool filtration averaged 14 percent (range, 3-32%) from fresh PCs and 24 percent (range, 9-62%) from stored PCs. Filtration did not change corrected increments (CI) measured after transfusion of fresh PCs. The Cl 1 hour after filtration of stored PCs diminished by 27 percent, but the difference was smaller after 18 hours, which suggests better survival of WBC-reduced platelets. The number of platelet units transfused did not differ in the two groups. No patient in the WBC-reduced group developed permanent platelet refractoriness; transient HLA antibodies of low titer developed in two patients. In the control group, one patient became refractory because of immunization and two developed transient HLA antibodies. It can be concluded that the reduction of WBCs in blood components can effectively prevent alloimmunization.

Adolescent↗

A randomized trial of a brief primary-care-based intervention for reducing at-risk drinking practices.

This randomized trial evaluated an intervention for reducing at-risk drinking practices in a sample of 307 patients. Eligible drinking patterns included chronic drinking (> or = 2 drinks per day in the past month), binge drinking (> or = 5 drinks per occasion at least twice in the past month), and drinking and driving (driving after > 2 drinks in the past month). Members of the intervention group received a message from their physician during their regularly scheduled visit, a self-help manual, written personalized feedback, and up to 3 telephone counseling calls. Dropout was significantly higher in the intervention than control group.

Adult↗

The combination of calcipotriol and methotrexate compared with methotrexate and vehicle in psoriasis: results of a multicentre placebo-controlled randomized trial.

BACKGROUND: A multicentre, randomized, double-blind, vehicle-controlled, parallel-group study was carried out to study the effect of the addition of calcipotriol ointment to methotrexate (MTX) therapy in patients with psoriasis vulgaris. OBJECTIVES: To investigate whether the addition of calcipotriol to treatment with MTX has an MTX-sparing effect, and whether the combination of treatments is safe. Additionally, to compare the effect of calcipotriol or vehicle on the duration of the relapse-free interval after cessation of MTX. METHODS: Patients on maintenance therapy with MTX with controlled psoriasis were selected. The study was divided into three phases: (i) an MTX-free phase with double-blind treatment with either calcipotriol ointment or vehicle; (ii) an MTX titration phase with open MTX treatment and additional double-blind treatment with either calcipotriol or vehicle until target response; and (iii) follow-up phase: in a group of 97 patients, psoriasis was assessed using the modified psoriasis severity score, patients' assessment and safety parameters were monitored as well. RESULTS: The combined use of calcipotriol with MTX resulted in an MTX-sparing effect of 3.4 mg week-1 (phase (II) and 2.6 mg week-1 (phase I and II taken together), while still maintaining efficacy. Calcipotriol treatment increased the time to relapse of psoriasis following discontinuation of MTX: 113 days vs. 35 days. A decrease in aspartate aminotransferase and alanine aminotransferase was seen during the study of 8% (calcipotriol) and 12% (vehicle). CONCLUSIONS: The combination of calcipotriol and MTX was safe and well tolerated. The combination resulted in lower cumulative dosages of MTX compared with MTX and vehicle. Therefore the risk of side-effects is substantially decreased.

Adult↗

Safety, efficacy, and cost of intraoperative cell salvage and autotransfusion after off-pump coronary artery bypass surgery: a randomized trial.

OBJECTIVE: We evaluated, in a randomized controlled trial, the safety and effectiveness of intraoperative cell salvage and autotransfusion of washed salvaged red blood cells after first-time coronary artery bypass grafting performed on the beating heart. METHODS: Sixty-one patients undergoing off-pump coronary artery bypass grafting surgery were prospectively randomized to autotransfusion (n = 30; receiving autotransfused washed blood from intraoperative cell salvage) or control (n = 31; receiving homologous blood only as blood-replacement therapy). Homologous blood was given according to unit protocols. RESULTS: The groups were well matched with respect to demographic and comorbid characteristics. Patients in the autotransfusion group had a significantly higher 24-hour postoperative hemoglobin concentration (11.9 g/dL; SD, 1.41 g/dL) than those in the control group (10.5 g/dL; SD, 1.37 g/dL) (mean difference, 1.02 g/dL; 95% confidence interval, 1.60-0.44 g/dL; P = .0007), as well as a 20% reduction in the frequency of homologous blood product use (11/31 vs 5/30; P = .095). Autotransfusion of washed red blood cells was not associated with any derangement of thromboelastograph values or laboratory measures of clotting pathway function (prothrombin time, activated partial thromboplastin time, and fibrinogen levels), increased postoperative bleeding, fluid requirements, or adverse clinical events. There was no statistical difference between groups in the total operation, hospitalization, and management costs per patient (median difference, USD 1015.90; 95% confidence interval, -USD 2260 to USD 206; P = .11). Conclusions Intraoperative cell salvage and autotransfusion was associated with higher postoperative hemoglobin concentrations, a modest reduction in transfusion requirements, no adverse clinical or coagulopathic effects, and no significant increase in cost compared with controls. This study supports its routine use in off-pump coronary artery bypass grafting surgery.

Adult↗

Calcium supplementation in nulliparous women for the prevention of pregnancy-induced hypertension, preeclampsia and preterm birth: an Australian randomized trial. FRACOG and the ACT Study Group.

A multicentre, randomized controlled double-blind trial in 5 maternity hospitals in Australia assessed the effect of a daily supplement of calcium (1.8g oral calcium or an oral placebo) taken daily until delivery, from less than 24 weeks' gestation, on the frequency of pregnancy-induced hypertension, preeclampsia and preterm birth (< 37 weeks' gestation) in 456 nulliparas with a singleton pregnancy. Treatment with calcium reduced the risk of preeclampsia (relative risk 0.44 [95% CI, 0.21-0.90], p = 0.02) and the risk of preterm birth (relative risk 0.44 [95% CI, 0.21-0.90], p = 0.02). No significant differences were seen between the 2 groups in the frequency of pregnancy-induced hypertension, although the study only had statistical power to detect large differences in this outcome. An updated systematic review of the 9 randomized trials of calcium supplementation in pregnancy shows a significant reduction in the risk of hypertension and preeclampsia although no effect on preterm birth. Calcium supplementation during pregnancy reduced the risk of preeclampsia and preterm birth in this nulliparous population. The available evidence for systematic review of all the randomized trials of calcium supplementation shows benefit in reducing the risk of hypertension and preeclampsia.

Adult↗

Comparing completely and stratified randomized designs in cluster randomized trials when the stratifying factor is cluster size: a simulation study.

Stratified randomized designs are popular in cluster randomized trials (CRTs) because they increase the chance of the intervention groups being well balanced in terms of identified prognostic factors at baseline and may increase statistical power. The objective of this paper is to assess the gains in power obtained by stratifying randomization by cluster size, when cluster size is associated with an important cluster level factor which is otherwise unaccounted for in data analysis. A simulation study was carried out using a CRT where UK general practices were the randomized units as a template. The results show that when cluster size is strongly associated with a cluster level factor which is predictive of outcome, the stratified randomized design has superior power results to the completely randomized design and that the superiority is related to the number of clusters.

Cluster Analysis↗

Antiemetic efficacy of high-dose metoclopramide: randomized trials with placebo and prochlorperazine in patients with chemotherapy-induced nausea and vomiting.

In a study of the effectiveness of high intravenous doses of metoclopramide as an antiemetic, 41 patients with advanced cancer who were being treated with cisplatin were entered into two double-blind trials. In the first trial patients were randomly assigned to receive either metoclopramide or placebo, and in the second trial they received either metoclopramide or prochlorperazine. Patients given metoclopramide had significantly fewer episodes of emesis than patients given placebo (medians, 1.0 vs. 10.5; P = 0.001) or prochlorperazine (medians, 1.5 vs. 12.0; P = 0.005). Metoclopramide was superior to placebo and to prochlorperazine in reducing the volume of emesis (P = 0.001 and P = 0.022, respectively) and was more effective than placebo in shortening the duration of nausea (P = 0.042) and vomiting (P = 0.028). Side effects from metoclopramide were minor, with mild sedation frequently observed; one patient had a brief extrapyramidal reaction. We conclude that metoclopramide in high intravenous doses has greater antiemetic activity than placebo or prochlorperazine in patients receiving cisplatin chemotherapy.

Adult↗

A randomized trial to assess childhood circumcision with the Plastibell device compared to a conventional dissection technique.

A randomized trial of routine circumcision in children using the Plastibell device is described and compared to a dissection suturing technique. One hundred children were studied with a mean age of 4.7 years. The device was applicable to all boys up to the age of 8, and a few older. General discomfort was carefully assessed and slightly less common after plastibell circumcision, but dysuria more so. No serious complication was encountered with either method; infection was slightly more common after the conventional procedure. Cosmetic results were similar for both methods. It is concluded that the Plastibell device is a satisfactory method for circumcising children of this age.

Child↗

REducing Deaths due to OXidative Stress (The REDOXS Study): Rationale and study design for a randomized trial of glutamine and antioxidant supplementation in critically-ill patients.

Critically-ill patients experience an extent of hyperinflammation, cellular immune dysfunction, oxidative stress and mitochondrial dysfunction. Supplementation with key nutrients, such as glutamine and antioxidants, is most likely to have a favourable effect on these physiological derangements, leading to an improvement in clinical outcomes. The results of two meta-analyses suggest that glutamine and antioxidants may be associated with improved survival. The purpose of the present paper is to report the background rationale and study protocol for the evaluation of the effect of high-dose glutamine and antioxidant supplementation on mortality in a large-scale randomized trial in 1200 mechanically-ventilated, critically-ill patients. Patients admitted to an intensive care unit (ICU) with clinical evidence of severe organ dysfunction will be randomized to one of four treatments in a 2 x 2 factorial design: (1) glutamine; (2) antioxidant therapy; (3) glutamine and antioxidant therapy; (4) placebo. The primary outcome for this study is 28 d mortality. The secondary outcomes are duration of stay in ICU, adjudicated diagnosis of infection, multiple organ dysfunction, duration of mechanical ventilation, length of stay in hospital and health-related quality of life at 3 and 6 months. A novel design feature is the combined use of parenteral and enteral study nutrients dissociated from the nutrition support. The therapeutic strategies tested in the randomized trial may lead to less morbidity and improved survival in critically-ill patients. The trial will be conducted in approximately twenty tertiary-care ICU in Canada and the first results are expected in 2009.

Antioxidants↗

Recurrence risks in randomized trials of laparoscopic versus open inguinal hernia repair: to pool or not to pool (this is not the question).

BACKGROUND AND AIMS: Meta-analyses suggest that, with regard to relative risks of hernia recurrence, there is a net benefit in the use of synthetic mesh rather than the surgical approach. Considering important arguments raised by both conventional and laparoscopic surgeons, we set out to explore other sources of variability across individual studies. METHODS: We abstracted all publications of randomized trials of laparoscopic versus open inguinal hernia repair included in the EU Hernia Trialists meta-analyses. We applied meta-regression to identify variables that are likely to alter the relative risk of hernia recurrence with either route. RESULTS: We included 41 randomized trials (7,446 patients), two of which were identified by a systematic literature search. There was significant statistical heterogeneity across studies (chi(2) test P=0.029). Meta-regression was limited because of scarce information provided in the original papers, and small sample sizes. Results varied internationally, with trials from the UK, southern Europe and Australia favouring open hernioplasty (analysis of variance, P=0.0047). Large numbers of surgeons contributing to the open hernioplasty group predicted better results with endoscopic hernia repair [risk ratio (RR)] 0.99 with any additional surgeon, 95% confidence interval (CI) 0.98-1.00, P=0.005]. Non-significant trends were observed towards reduced recurrence risks with increasing mesh sizes. Training procedures performed before patient enrollment slightly reduced the relative risk of recurrence with endoscopic hernioplasty. CONCLUSION: Because of the diversity in the size of effect, it is doubtful whether data from the available hernia trials should be compiled into a single summary measure. Efficacy estimates in hernia surgery are susceptible to technical issues, which need further scientific appraisal on a larger scale.

Hernia, Inguinal↗

Transabdominal versus transcervical chorionic villus sampling: a randomized trial.

Chorionic villus sampling (CVS) is still considered to be an applied research method and its safety is under evaluation in randomized trials. Moreover, no knowledge is available about the comparative efficiency and risks of transcervical and transabdominal chorionic villus sampling. A preliminary analysis of the first 639 consecutive cases of an ongoing trial in which cases are randomized between transcervical and transabdominal aspiration techniques shows: (a) an overall sampling success rate of greater than 99% obtained by both techniques; however, the number of repeat insertions of the sampling device was higher for the transcervical route; (b) a significant shift towards lighter tissue samples for the transabdominal route; however, very light specimens, less than 10 mg, were equally distributed in both groups; and (c) approximately 10% of cases underwent a different procedure from the allocated one because of an anatomical or clinical contraindication, with a higher rate of deviation for the transcervical technique.

Abdomen↗

High-dose-rate versus low-dose-rate intracavitary therapy for carcinoma of the uterine cervix: a randomized trial.

BACKGROUND: This was a prospective randomized clinical trial undertaken at our institution to compare low-dose-rate (LDR) intracavitary radiation therapy versus high-dose-rate (HDR) intracavitary radiation therapy for the treatment of cervical carcinoma. METHODS: From January 1984 to December 1997, a total of 132 patients with Stage II or IIIB of invasive carcinoma of the uterine cervix were entered into this randomized study. Treatment arm by HDR or LDR was allocated according to the month of each patient's birth. External irradiation consisted of whole pelvis irradiation and pelvic irradiation. Doses of external irradiation for both groups were identical. The authors used 0.588 as the conversion factor of total intracavitary dose from LDR to HDR. RESULTS: The 5-year disease specific survival rates of Stage II and III patients treated with HDR were 69% and 51% whereas those with LDR were 87% and 60%, respectively. The 5-year pelvic recurrence free survival rates of Stage II and III patients treated with HDR were 89% and 73% whereas those with LDR were 100% and 70%, respectively. There was no significant difference in disease specific survival or pelvic recurrence free survival rates between HDR and LDR. The actuarial complication rate (Radiation Therapy Oncology Group Grade 3, 4, or 5) at 5 years was 10% in the HDR group and 13% in the LDR group, and the difference between the HDR and LDR groups was not statistically significant. CONCLUSIONS: The pelvic control or actuarial complication rates were comparable between HDR and LDR treatment. The difference between the disease specific survival rates for HDR and LDR was not statistically significant for Stage II or III, although in Stage II, patients treated with LDR appeared to have a better survival rate than those treated with HDR.

Adult↗

Impact of oxytocin discontinuation on fetal heart rate and uterine contractility: A pre-specified ancillary analysis embedded within a randomized trial.

INTRODUCTION: Oxytocin is widely used to augment uterine contractions during labor. However, its use has been associated with fetal heart rate (FHR) abnormalities and neonatal morbidity, which may be reduced by discontinuing oxytocin during labor. We aimed to assess the impact of oxytocin discontinuation at the onset of the active phase of labor on FHR patterns and uterine contractility. MATERIAL AND METHODS: This study is a pre-specified ancillary analysis of the STOPOXY trial, a multicenter, randomized, open-label, controlled superiority trial conducted in 21 French maternity units between January 2020 and January 2022, which aimed to assess the impact of oxytocin discontinuation during active labor on neonatal morbidity. Participants who received oxytocin before 4&#x2009;cm dilation were randomly assigned (1:1) to either oxytocin discontinuation or oxytocin continuation. For the present analysis, we included women from the per-protocol discontinuation group of the parent trial. Inclusion was restricted to the six centers with electronic cardiotocography storage where valid cardiotocography recordings were available for at least 1&#x2009;h before and 1&#x2009;h after oxytocin discontinuation. Using a paired before-and-after design, FHR parameters (classified according to FIGO criteria) and uterine activity were compared during the 60&#x2009;min preceding versus the 60&#x2009;min following oxytocin discontinuation by independent obstetricians blinded to neonatal outcomes. Changes in FHR pattern were categorized as no change, improvement, or deterioration. RESULTS: 284 women fulfilled the eligibility criteria. Following oxytocin discontinuation, mean FHR increased (135 vs. 137.5&#x2009;bpm; p&#x2009;<&#x2009;0.002) and FHR variability significantly changed (p&#x2009;=&#x2009;0.010), with a lower rate of reduced variability (3.9% vs. 2.5%) and a higher rate of normal variability (48.2% vs. 53.3%). The proportion of tracings with decelerations significantly decreased (64.1% vs. 48.6%; p&#x2009;<&#x2009;0.001). Uterine activity decreased, with fewer uterine contractions (4.0 vs. 3.5 contractions per 10&#x2009;min; p&#x2009;<&#x2009;0.001). CONCLUSIONS: Among women receiving oxytocin during early labor, discontinuation at the onset of the active phase was associated with improved FHR patterns and reduced uterine activity, suggesting a lower fetal stress and tachysystole. Further studies are needed to assess whether these changes affect labor management or maternal experience.

Humans↗

Quality of life following laparoscopic anterior 90 degrees versus Nissen fundoplication: results from a multicenter randomized trial.

BACKGROUND: The short-term clinical outcomes from a multicenter prospective randomized trial of laparoscopic Nissen versus anterior 90 degrees partial fundoplication have been reported previously. These demonstrated a high level of satisfaction with the overall outcome following anterior 90 degrees fundoplication. However, the results of postoperative objective tests and specific clinical symptoms are not always consistent with an individual patient's functional status and general well being following surgery, and quality of life (QOL) is also an important outcome to consider following surgery for reflux. Hence, QOL information was collected in this trial to investigate the hypothesis: improvements in QOL following laparoscopic antireflux surgery are greater after anterior 90 degrees partial fundoplication than after Nissen fundoplication. METHODS: Patients undergoing a laparoscopic fundoplication for gastro-esophageal reflux at one of nine university teaching hospitals in six major cities in Australia and New Zealand were randomized to undergo either laparoscopic Nissen or anterior 90 degrees partial fundoplication. Quality of life before and after surgery was assessed using validated questionnaires - the Short Form 36 general health questionnaire (SF36) and an Illness Behavior Questionnaire (IBQ). Patients were asked to complete these questionnaires preoperatively and at 3, 6, 12 and 24 months postoperatively. RESULTS: One hundred and twelve patients were randomized to undergo a Nissen fundoplication (52) or a 90 degrees anterior fundoplication (60). Patients who underwent anterior fundoplication reported significant improvements in eight of the nine SF36 scales compared to four of the nine following a Nissen fundoplication. The majority of these improvements occurred early in the postoperative period. With respect to the illness behavior data, there were no significant differences between the two procedures. Both groups had a significant improvement in disease conviction scores at all time points compared to their preoperative scores. CONCLUSIONS: Patients undergoing laparoscopic anterior 90 degrees partial fundoplication reported more QOL improvements in the early postoperative period than patients undergoing a Nissen fundoplication. However, the QOL outcome for both procedures was similar at later follow-up.

Australia↗