No abstract

Among 79 patients with testicular injury as a result of external trauma 5 had bilateral injury. Such injury occurred in only 1 of 66 patients (1.5 per cent) with blunt trauma versus 4 of 13 (31 per cent) with penetrating trauma. Bilateral ruptures were managed by bilateral partial orchiectomy in 2 cases, and orchiectomy with contralateral débridement and suturing in 1. Of 2 patients with unilateral rupture and contralateral contusion the contusions were treated by evacuation of the hematoma and the ruptures were managed by orchiectomy in 1 and partial orchiectomy in the other. Four patients were available for followup. One patient was hormonally anorchid but he obtained normal erections with testosterone cypionate, 1 had normal serum testosterone concentrations but borderline normal semen analysis, and 1 had reduced erections and borderline normal semen. The remaining patient had normal erections and no semen analysis was performed. The nature of the injury rather than the type of treatment appears to be the primary determinant of the outcome in these cases.

Use of short-acting nifedipine was associated with increased risk of stroke occurrence in elderly hypertensive patients.

Hydrogen atom-induced deuterium adatom abstraction has been studied on the Si͑100͒ surface from a desorption point of view. Abstraction of HD as well as collision-induced D 2 desorption are observed on the D/Si͑100͒ surface during H beam exposure at 573 K. For 1 ML D ad precoverage, about 30% of the desorbed D atoms are ejected as collision-induced D 2 desorption at the very beginning of H(g) exposure. It is found that the decay of the HD and D 2 rates are affected by the total coverage, HϩD . The decay rate of the HD rate is much lower in the low coverage regime than in the high coverage regime. The nominal cross section of the former is 2.3Ϯ1.0 Å 2 , while for the latter 7.2Ϯ0.5 Å 2 . The HD rate curves show that the abstraction obeys nearly first-order kinetics towards D coverage, D . On the other hand, the D 2 rate curves show that the collision-induced desorption obeys nearly fourth-order kinetics towards D . Such HD abstraction is also observed on an oxygen-deposited D/Si͑100͒ surface where the oxygen atoms are known to be incorporated between Si atoms. The observed decay rate of the HD rate is extremely low, with a cross section of 1.5Ϯ1.0 Å 2 . The reaction kinetics are well understood by adopting the kinetics model recently proposed by Flowers et al. ͓Surf. Sci. 396, 227 ͑1998͔͒. The abstraction of HD may be due to an Eley-Rideal mechanism rather than to a hot atom mechanism. Collision-induced D 2 desorption may take place upon encounter of two dideuteride species via an isomerization reaction at quasiequilibrium.

LT removal in anaesthetized state reduced cough, hypersalivation, and prevented tube displacement and hypoxia. Upper airway obstruction in the anaesthetized state should be predicted and managed with chin or jaw lifting.