Response to 35% CO2 as a marker of panic in severe anxiety.

Griez, E; Zandbergen, J; Pols, H; de Loof, C · Am J Psychiatry · 1990

case_series · Level IV

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Abstract

One inhalation of 35% CO2 was administered to each of 32 patients with high anxiety ratings. Only patients with panic disorder had increases in reported anxiety upon CO2 intake. CO2-triggered anxiety appears specific for panic disorder and independent of baseline anxiety.

Medical subject headings