Hudson Institute
Publishes on Clinical Nutrition and Gastroenterology, Diet and metabolism studies, Burn Injury Management and Outcomes. 348 papers and 28.5k citations.
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In Brief Background: Optimization of postoperative outcome requires the application of evidence-based principles of care carefully integrated into a multimodal rehabilitation program. Objective: To assess, synthesize, and discuss implementation of “fast-track” recovery programs. Data Sources: Medline MBASE (January 1966–May 2007) and the Cochrane library (January 1966–May 2007) were searched using the following keywords: fast-track, enhanced recovery, accelerated rehabilitation, and multimodal and perioperative care. In addition, the synthesis on the many specific interventions and organizational and implementation issues were based on data published within the past 5 years from major anesthesiological and surgical journals, using systematic reviews where appropriate instead of multiple references of original work. Data Synthesis: Based on an increasing amount of multinational, multicenter cohort studies, randomized studies, and meta-analyses, the concept of the “fast-track methodology” has uniformly provided a major enhancement in recovery leading to decreased hospital stay and with an apparent reduction in medical morbidity but unaltered “surgery-specific” morbidity in a variety of procedures. However, despite being based on a combination of evidence-based unimodal principles of care, recent surveys have demonstrated slow adaptation and implementation of the fast-track methodology. Conclusion: Multimodal evidence-based care within the fast-track methodology significantly enhances postoperative recovery and reduces morbidity, and should therefore be more widely adopted. Further improvement is expected by future integration of minimal invasive surgery, pharmacological stress-reduction, and effective multimodal, nonopioid analgesia. The integration of unimodality evidence-based perioperative care principles into a multimodal “fast-track” rehabilitation program is now well documented to accelerate postoperative recovery and decrease hospital stay. Therefore, this multidisciplinary effort should be more widely adopted.
Cytokines, products of stimulated macrophages, are thought to mediate many host responses to bacterial infection, but increased circulating cytokine concentrations have not been detected consistently in infected patients. We measured plasma concentrations of circulating tumor necrosis factor alpha (cachectin), interleukin-1 beta, and gamma interferon, together with physiologic and hormonal responses, in 13 healthy men after intravenous administration of Escherichia coli endotoxin (4 ng per kilogram of body weight) and during a control period of saline administration. Eight additional subjects received ibuprofen before receiving endotoxin or saline. Plasma levels of tumor necrosis factor were generally less than 35 pg per milliliter throughout the control period, but increased 90 to 180 minutes after endotoxin administration to mean peak concentrations of 240 +/- 70 pg per milliliter, as compared with 35 +/- 5 pg per milliliter after saline administration. Host responses were temporally associated with the increase in circulating tumor necrosis factor at 90 minutes, and the extent of symptoms, changes in white-cell count, and production of ACTH were temporally related to the peak concentration of tumor necrosis factor. Ibuprofen pretreatment did not prevent the rise in circulating tumor necrosis factor (mean peak plasma level, 170 +/- 70 pg per milliliter) but greatly attenuated the symptoms and other responses after endotoxin administration. Concentrations of circulating interleukin-1 beta and gamma interferon did not change after endotoxin administration. We conclude that the response to endotoxin is associated with a brief pulse of circulating tumor necrosis factor and that the resultant responses are effected through the cyclooxygenase pathway.
This chapter is an experimental and follow-up clinical study showing that normal life could be sustained using parenteral means only. The experimental element involved six beagle puppies who were paired after weaning at eight weeks of age with control littermates. Then, at 12 weeks a vinyl catheter was inserted into an external jugular vein and threaded to the superior vena cava. The end was tunnelled to be brought out on the back between the scapulae and the puppies’ attached to a harness in a ‘metabolic’ cage. Stanley Dudrick was a surgical resident working at the University of Pennsylvania in 1967 with his mentor Jonathan Rhoads. He became the first president and founder of the American Society for Parenteral and Enteral Nutrition. Jonathan Rhoads, an adult cancer surgeon, had an equally prestigious career editing the Annals of Surgery and writing the Rhoads’ Textbook of Surgery.
The nonessential amino acid glutamine has recently been the focus of extensive scientific interest because of its importance in cell and tissue cultures and its physiologic role in animals and humans. Glutamine appears to be a unique amino acid, serving as a preferred respiratory fuel for rapidly proliferating cells, such as enterocytes and lymphocytes; a regulator of acid-base balance through the production of urinary ammonia; a carrier of nitrogen between tissues; and an important precursor of nucleic acids, nucleotides, amino sugars, and proteins. Abundant evidence suggests that glutamine may become a "conditionally essential" amino acid in the critically ill. During stress the body's requirements for glutamine appear to exceed the individual's ability to produce sufficient amounts of this amino acid. Provision of supplemental glutamine in specialized enteral or parenteral feeding may enhance nutritional management and augment recovery of the seriously ill while minimizing hospital stay.