PubMed · 13790341
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R S JOHNSON, E G SITA-LUMSDEN. 1960. Plastic bronchitis.. https://doi.org/10.1136/thx.15.4.325
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This paper deals with fitting piecewise terms in regression models where one or more break-points are true parameters of the model. For estimation, a simple linearization technique is called for, taking advantage of the linear formulation of the problem. As a result, the method is suitable for any regression model with linear predictor and so current software can be used; threshold modelling as function of explanatory variables is also allowed. Differences between the other procedures available are shown and relative merits discussed. Simulations and two examples are presented to illustrate the method.
We describe a 5-year-old boy with Fontan physiology and a ventricular pacemaker who developed severe plastic bronchitis. Evaluation by cardiac catheterization revealed profoundly altered hemodynamics, which improved with atrial pacing. Following implantation of an atrial pacemaker, which restored atrioventricular (A-V) synchrony, the patient's hemodynamics greatly improved and his plastic bronchitis resolved.
Cefprozil is a novel third generation, broad-spectrum oral cephalosporin with activity against a spectrum of aerobic gram-negative and positive bacteria, as well as certain anaerobes. The beta-lactamase stability of cefprozil may exceed that of other oral cephalosporins for some important pathogens. Cefprozil may be a suitable alternative to several other commonly used beta-lactams and cephalosporins in the treatment of mild to moderate upper and lower respiratory tract infections including sinusitis, otitis media, pharyngitis/tonsillitis, secondary bacterial infection of acute bronchitis, and acute bacterial exacerbations of chronic bronchitis, and skin and skin structure infections in children. Available data indicate the safety of cefprozil in both pediatric and adult population.