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PubMed · 3070242

[Acute appendicitis].

C Käufer·I Franz·H J Löblich
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Abstract

The appendectomy rate in the Federal Republic of Germany has decreased considerably over the past 20 years; in Hannover it has declined by 50%. The number of patients not undergoing operations after hospitalization has increased from 20% to about 65%. Mortality has decreased by 80%, now reaching 0.7 for 100,000 of the population. More than 80% of the deceased are over 65 years old. The main cause of death is advanced appendicitis including perforation. In the North German Patient Appeal Office 10% of all complaints in general surgery concern appendicitis, mostly because of delayed diagnosis. A considerable number of appendectomies is carried out simultaneously in gynecological operations.

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Acute DiseaseAppendectomyAppendicitisGermany, WestHumansPostoperative ComplicationsJournal ArticleReview

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BibTeXRIS

C Käufer, I Franz, H J Löblich. 1988. [Acute appendicitis].. https://pubmed.ncbi.nlm.nih.gov/3070242/

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Acute spermatic cord torsion alters the microcirculation of the contralateral testis.

PURPOSE: The purpose of this study was to characterize the hemodynamic changes in the contralateral testis during acute spermatic cord torsion in anesthetized rats. MATERIALS AND METHODS: We used videomicroscopy to examine the microcirculation of the contralateral testis following acute torsion. Specifically, we examined the effect on vasomotion, a rhythmic dilation and constriction of the arterioles that is involved in fluid and nutrient exchange and modulation of local vascular resistance. In a separate set of experiments, blood flow in the contralateral internal spermatic artery was measured with an ultrasonic flow probe during acute torsion. RESULTS: Following 720 degrees torsion, the amplitude of vasomotion in the contralateral testis increased 121% (29.0 +/- 3.9% versus 13.0 +/- 1.7%) compared with controls. Blood flow in the contralateral internal spermatic artery decreased 43% after 2 hours' torsion. CONCLUSIONS: Acute spermatic cord torsion altered the microcirculation by increasing the amplitude of vasomotion and decreased total blood flow to the opposite testis. Because the hydraulic resistance of a blood vessel exhibiting vasomotion is always less than a vessel with the same average but static diameter, the observed microcirculatory changes may be an adaptive response to preserve local flow in the presence of decreased total flow. The long-term consequences of these changes in the microcirculation may affect testicular function and ultimately fertility.

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