acidosisalgorithmalteredanemiaanionbasiccardiaccatscauseschestcriteriadeadlydifferentialdifferentialsdocsdrugsedekgemembolismflowchartframeworkgapimpactsinfectionskeeplablowmentalmessymetabolicmindmnemonicmopsneednormalpainpalacepulmonaryriskrulescoresicksignsstatusstemistrepsyncopetachytimeoutvalues