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I just don't get why you state formulars without giving the abbreviations/symbols. WP is so awesome, but so many sites with formulas are too sophisticated. i have an academic background, partly in science - still i have a hard time. -- 194.96.45.176 ( talk) 15:01, 30 August 2016 (UTC) reply

The original source for this page uses non-standard subscripts.

It is common, I gather to use: P_a - for arterial blood gas partial pressures P_A - for alveolar gas partial pressures

Likewise, volumes are similarly denoted. V_A for alveolar volume.

Anyone object if I go through and correct the subscripts? Because this,

( {\displaystyle V_{t}} V_{t}) is made up of {\displaystyle V_{a}+V_{d}} {\displaystyle V_{a}+V_{d}}"

is confusing.

<a year passes - and no comments, so I'll set to work>