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May 2019    Download the Entire Issue (PDF) Vol. 34, No. 5   RSS Feed for Undercurrent Issues
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The Real-Time Data Every Dive Computer Should Have

from the May, 2019 issue of Undercurrent   Subscribe Now

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Max Weinmann, an Undercurrent subscriber and a critical care specialist in Atlanta, GA, writes, "I am grateful for John Bantin's timely thoughts on computer reliability and DCS avoidance (Undercurrent March). The challenge does, indeed, go beyond the ability to achieve mathematical manipulations of algorithms, which have always been difficult to test in humans, and in particular, those of us who present ubiquitous but growing challenges; namely aging, at least in physiological terms.

"This has been clearly demonstrated recently by the increasing morbidity and mortality of older divers. Change in weight, fitness, cardiovascular and organ health, and the indignation of a growing medicine cabinet replete with blood pressure, cholesterol, prostate and hormone replacement medication, to name a few. All of which collude to alter our physiology and the nature of gas uptake and release as we dive. Since the introduction of computers, we have largely become passive travelers of a tour governed utterly by the laws espoused by these algorithms, where personalization is based upon standard deviation manipulation rather than on the increasingly complex diversity of our own body physiology."...


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