Comparative evaluation of conservative management versus early surgical intervention in appendicular mass--a clinical study.

The management of appendicular mass seems to be taking turn with the availability of better antibiotics, care and anaesthesia. Quite a few workers turned to the other extreme of traditional conservative approach and reported acceptable results with immediate intervention during phlegmonous stage. But practically, surgeons still continue to adopt the same old regime. To alleviate this fear and circumvent the disadvantages of immediate intervention a midpath regime called early appendicectomy has been clinically evaluated. With this new approach in the present study preventing misdiagnosis (15%), no chance of recurrence as also of missing in the follow-up and shorter overall hospital stay with economy are some strong reasons to adopt this regime.

Intestinal colonization & production of diarrhoea by enteroadherent-aggregative Escherichia coli.

The ability of HEp-2 cell adherent Esch. coli of aggregative phenotype (EA-Agg EC) to cause diarrhoea and to colonize the bowel of rabbits was studied. Thirty six rabbits were challenged with one of three EA-Agg EC strains (F23A; H766C and F17A-15, 3 and 3 rabbits respectively) or a control strain (K12-15 rabbits) in reversible ileal-tie in adult rabbit diarrhoea (RITARD) model. The animals were sacrificed 72 h post challenge. Severe diarrhoea occurred in greater number of F23A challenged rabbits than the controls (P < 0.05). Mucosal cultures from proximal and distal small intestine and colon yielded about 1000 times more Esch. coli in the test than control rabbits (P < 0.001 in each case). EA-Agg EC were consistently grown from mucosa in the test rabbits who commonly showed mild to moderate villous stunting and grade + to nuclear fragmentation (karyorrhexis) in the small and large bowel epithelium. The control animals had either normal villi or very mild villous stunting. Results comparable to F23A were obtained with the other two EA-Agg EC strains tested in a smaller number of animals.