Library

feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
Filter
  • Articles: DFG German National Licenses  (2)
  • Key words: Laparoscopic colon resection — Stress parameter — Immune response — Postoperative recovery  (1)
  • Key words: Study design – Biometric principles – Cohort study – Case-control study – Randomized clinical trial – Intention-to-treat principle  (1)
Source
  • Articles: DFG German National Licenses  (2)
Material
Years
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Der Anaesthesist 43 (1994), S. 1-8 
    ISSN: 1432-055X
    Keywords: Schlüsselwörter: Studiendesign – Biometrische Prinzipien – Kohortenstudie – Fall-Kontroll-Studie – Randomisierte klinische Studie – Intention-to-treat-Prinzip ; Key words: Study design – Biometric principles – Cohort study – Case-control study – Randomized clinical trial – Intention-to-treat principle
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Abstract. It is the purpose of this review to outline the principles of biometric methods in clinical research. Several study designs such as cohort studies, case-control studies or randomized controlled trials are explained in detail, and their problems and their interpretation are discussed. It is demonstrated that observational studies may yield valuable information about associations between exposure and outcome variables but that only properly designed randomized clinical trials of adequate sample size make it possible to answer research questions about causal relationships. It is emphasized that good clinical research depends on properly designed studies more than on complicated statistical procedures.
    Notes: Zusammenfassung. Es wird ein Überblick über die Struktur medizinisch-empirischer Forschungsmethodik gegeben. Verschiedene Versuchsdesigns wie Kohortenstudie, Fall-Kontroll-Studie und randomisierte klinische Studie werden dargestellt, erläutert, und es wird auf Probleme hingewiesen. Auf wichtige Aspekte randomisierter Studien wird im Detail eingegangen und dargestellt, daß sie die einzige Möglichkeit sind, in einer empirischen Wissenschaft wie der Medizin zu Aussagen über kausale Zusammenhänge zu gelangen. Es wird argumentiert, daß sich die biometrischen Anforderungen an klinische Forschung nicht durch die Anwendung komplexer statistischer Verfahren erfüllen lassen, sondern daß in diesem Sinne gute klinische Forschung ganz vorrangig von einer sorgfältigen Studienplanung abhängt.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Surgical endoscopy and other interventional techniques 12 (1998), S. 963-967 
    ISSN: 1432-2218
    Keywords: Key words: Laparoscopic colon resection — Stress parameter — Immune response — Postoperative recovery
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Methods: In order to evaluate the stress and immunological response to laparoscopic and conventional colon resection we operated on male Wistar rats (350–380 g), performing either laparoscopic (n= 15) or open colon resection (n= 15). A third group (n= 10) underwent anesthesia only. Immediately before and after surgery as well as 1 and 7 days postoperatively a 1 ml sample of blood was taken from the retrobulbar veinous plexus. Stress (corticosterone) and immune parameters (neopterin and interleukin [IL] 1-β) were measured. Furthermore, the body weight as a parameter of postoperative recovery was monitored. Results: The analysis of variance showed significant differences between the three groups over a period of 1 week (p 〈 0.0001 for corticosterone, p= 0.0854 for IL 1-β, p= 0.0045 for neopterin). Additionally in a t-test significant differences were found between the laparoscopic and conventional group with regard to corticosterone (p= 0.08), to neopterin (p= 0.045), and to IL 1-β (p= 0.0043) at the end of the operation. One week after the operation the stress and immune parameters were back to normal levels in each group except IL 1-β, but the recovery indicated by body weight was different according to the kind of the applied operative procedure: 7 days postoperatively the rats lost 5.99% of their body weight after open surgery and only 2.4% after laparoscopic surgery. After anesthesia only the body weight increased by about 4.8%. Conclusion: Laparoscopic colon resection alters the stress and immune system of healthy rats less than open colon resection. This observation is confirmed by the quicker recovery in laparoscopically operated rats.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...