Is It Time to Retire?

Is it time to retire high-concentration nitrous oxide?

DURING the past decade, anesthesiologists have increasingly recognized that the effects of anesthesia reach beyond the postanesthesia care unit. Researchers have extended their vision beyond studies of pain and postoperative nausea and vomiting in the postanesthesia care unit (still important outcomes) to studies of the impact of anesthesia on a broad range of postoperative outcomes, including ...

Writing qualitative article: It is time to quality improvement

Précis: This debate article highlights some questions from critics of qualitative research. Planning for proper design, philosophical background, researcher as a research instrument in the study, trustworthiness and application of findings are main debates in this field. One of the issues that have been received little attention is report of qualitative inquiry. A qualified report can an...

I-4: Is It Time Now to Cancel Fresh EmbryoTransfer

The implantation of embryo depends on the quality of the embryo and the receptivity of the endometrium. While the factors affecting embryo quality were optimized, the implantation rates did not reach the desirable levels. This directs the blaming for endometrial receptivity which already has been affected by supra-physiological levels of hormone, namely estradiol, in controlled ovarian hypersti...

Is it time to retire the CTDI for CT quality assurance and dose optimization?

To retire or not to retire, that is the question!

Amerkan Association for the Advancement of Science Science serves its readers as a forum for the presentation and discussion of important issues related to the advancement of science, including the presentation of minority or conflicting points of view, rather than by publishing only material on which a consensus has been reached. Accordingly, all articles published in Science-including editori...