No abstract

One hundred and fifteen patients suffering from acute exacerbations of chronic bronchitis took part in a double-blind, multicentre, clinical trial designed to compare the therapeutic efficacy and tolerability of ampicillin and minocycline hydrochloride, a new, long-acting, semi-synthetic tetracycline. Both antibiotics were equally successful in treatment, there being no statistically significant difference between the two in any of the parameters studied. Side-effects were few and far between. Only one patient out of the 57 who took minocycline, complained of dizziness.

No abstract

The mean minocycline content of sinus secretions aspirated during antral wash-out in 8 patients sinusitis was found to be 1.06 mug. per ml. (SD.1.03). This exceeds the M.I.C. for most strains of bacteria likely to be found in sinusitis. The mean minocycline serum level in these 8 patients was 3.16 mug. per ml. (S.D. 1.64). The sinus secretion to serum level ratio was therefore 0.34:1. No correlation was found between serum level and sinus secretion level, nor could any of the factors looked at in this study be correlated with the degree to which minocycline penetrated the sinus secretion.