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PubMed · 6541782

Otitis media.

Abstract

Earache, a common symptom in children, causes many parents to seek medical attention. Aside from trauma and the discomfort that often accompanies viral infections of the upper respiratory tract, acute otitis media with effusion is the commonest cause of otalgia in infants and children. Proper management requires a team effort between the physician and the child's parents or caretaker. The physician must transmit to the parents a concise but thorough overview of the problem and a plan for management. This should include information on the pathophysiology of ear disease, its incidence, therapy and the potential adverse effects, and any measures that the parents may take to prevent recurrence. The primary responsibility for transmittal of this information lies with the physician. Ancillary medical personnel and communication aids (videotapes, computers, printed materials) should be utilized, if available, to reinforce the physician's "message."

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BibTeXRIS

C M Ginsburg. 1984. Otitis media.. https://pubmed.ncbi.nlm.nih.gov/6541782/

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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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