Blood gas derangements in pulmonary embolism.

Con~munications for this section will be published us space and priorities pennit. The cotnnwnts should riot exceed 350 words in length, with a tnaxitnurn offioe references, onefigure or table ccln be printed. Exceptions trwy occur under ))articular circunutances Contributions may incluak con~nwnts on urticles published in this periodical, o r they nlny be reports of unique educutiotiul churucter: Spec$c penr~issioti to publish should be cited in a covering letter o r appended as a postscript.