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J L Vincent P Van der Linden M Domb S Blecic G Azimi A Bernard 《Anesthesia and analgesia》1987,66(6):565-571
The hemodynamic effects of dopamine and dobutamine (at doses of 6 micrograms X kg-1 X min-1) were compared during fluid resuscitation from septic shock induced by endotoxin (3 mg/kg) in the dog. In the first part of the study, when a standard amount of saline solution was infused (in 24 dogs), dopamine infusion resulted in higher cardiac filling pressures than did dobutamine infusion, whereas dobutamine infusion resulted in higher cardiac output. In the second part of the study, when fluid infusion was titrated to maintain pulmonary artery balloon-occluded pressure at constant level (in 24 dogs), the total amount of fluids was significantly greater with dobutamine than when dopamine was used (109 +/- 13 vs 71 +/- 10 ml/kg). The combination of dobutamine with fluids resulted in significantly greater stroke volume (39.6 +/- 3.8 vs 21.0 +/- 4.0 ml, P less than 0.05) and oxygen consumption (194 +/- 18 vs 144 +/- 8 ml/min, P less than 0.05). The different effects of dopamine and dobutamine on cardiac filling pressures can be due to differences in effects on myocardial contractility, ventricular afterload, and cardiac compliance. This experimental study indicates that when fluid therapy is combined with adrenergic agents in resuscitation from septic shock, dobutamine can be associated with higher cardiac output and oxygen transport and can result in higher tissue oxygen consumption than dopamine. 相似文献
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Kutsch VK Milicich G Domb W Anderson M Zinman E 《Journal of the California Dental Association》2007,35(11):778-785
The traditional dentistry approach treated the disease with a limited surgical strategy aimed at removing carious lesions on teeth. Today, the dental profession is refocusing its efforts to include risk assessment with evidence-based diagnosis while also treating the biofilm component of the disease. While there is compelling science to support CAMBRA, there are fewer articles with practical direction regarding how to integrate CAMBRA diagnostics and treatment into clinical practice, which this article addresses. 相似文献
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Tears in the gluteus medius and minimus tendons, often misdiagnosed as trochanteric bursitis, have recently emerged as an important cause of recalcitrant greater trochanter pain syndrome. Advances in endoscopic surgery of the hip have created opportunities to better evaluate and treat pathology in the peritrochanteric compartment. We reviewed the literature on trochanteric pain syndrome and gluteus medius tendon injuries. Existing techniques for endoscopic and open gluteus tendon repair and potential challenges in restoration of abductor function were analyzed. Partial-thickness undersurface tears of the gluteus medius were identified as a common pathologic entity. Although these tears are otherwise analogous to partial-thickness tears of the rotator cuff, the lack of arthroscopic access to the deep side of the gluteus medius tendon represents a unique technical challenge. To address the difficulty in visualizing and thus repairing undersurface tears of the gluteus medius, a novel endoscopic trans-tendinous repair technique was developed. The purposes of this article are to review the anatomy, pathology, and existing repair techniques of gluteus medius tendon tears and to describe the rationale and surgical steps for endoscopic trans-tendinous repair. 相似文献
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External fixation of pediatric femoral shaft fractures has the advantages of minimal dissection and early weight bearing. However, it is associated with slow healing and potential for refracture. Some surgeons have proposed that axial dynamization may improve the speed and strength of callus formation. to test this hypothesis, we performed a randomized controlled trial using 53 femur fractures in 52 patients between 1995 and 1999. Patients were randomized to receive dynamic or static fixation. Average time until early callus formation was 23.2 days for dynamic fixation and 24.9 days for static fixation (P = 0.627). Average time until complete radiographic healing was 70.1 days for dynamic fixation and 63.1 days for static fixation (P = 0.370). Similarly, the differences in time to fixator removal and to full weight bearing did not reach statistical significance. The conclusion was that axial dynamization of external fixation for pediatric femur fractures has no significant effect on time to healing or frequency of complications. 相似文献
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Domb BG Khanna AJ Mitchell SE Frassica FJ 《Clinical orthopaedics and related research》2004,(420):225-229
Soft tissue venous malformations of muscles may produce musculoskeletal deformities caused by contracture of the involved muscle. When the venous malformation involves the flexor muscles of the leg, equinus deformity and toe-walking may occur. Three patients with unilateral toe-walking secondary to venous malformation of the calf muscle, showing the classic presentation of this unusual condition, are presented. Several methods of treating the deformity and the underlying venous malformation are discussed, and the current literature on intramuscular venous malformations, including their natural history, diagnoses, treatment options, and outcomes, is reviewed. Based on our experience and review of the literature, percutaneous sclerotherapy may be a viable option for treatment of venous malformations of the calf musculature that result in a toe-walking deformity. 相似文献