{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,14]],"date-time":"2026-03-14T03:12:46Z","timestamp":1773457966321,"version":"3.50.1"},"reference-count":0,"publisher":"American Physiological Society","issue":"3","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Journal of Applied Physiology"],"published-print":{"date-parts":[[1989,3,1]]},"abstract":"<jats:p> Pulmonary gas exchange during panting was studied in seven conscious dogs (32 kg mean body wt) provided with a chronic tracheostomy and an exteriorized carotid artery loop. The animals were acutely exposed to moderately elevated ambient temperature (27.5 degrees C, 65% relative humidity) for 2 h. O2 and CO2 in the tracheostomy tube were continuously monitored by mass spectrometry using a special sample-hold phase-locked sampling technique. PO2 and PCO2 were determined in blood samples obtained from the carotid artery. During the exposure to heat, central body temperature remained unchanged (38.6 +\/- 0.6 degrees C) while all animals rapidly switched to steady shallow panting at frequencies close to the resonant frequency of the respiratory system. During panting, the following values were measured (means +\/- SD): breathing frequency, 313 +\/- 19 breaths\/min; tidal volume, 167 +\/- 21 ml; total ventilation, 52 +\/- 9 l\/min; effective alveolar ventilation, 5.5 +\/- 1.3 l\/min; PaO2, 106.2 +\/- 5.9 Torr; PaCO2, 27.2 +\/- 3.9 Torr; end-tidal-arterial PO2 difference [(PE\u2032 - Pa)O2], 26.0 +\/- 5.3 Torr; and arterial-end-tidal PCO2 difference, [(Pa - PE\u2032)CO2], 14.9 +\/- 2.5 Torr. On the basis of the classical ideal alveolar air approach, parallel dead-space ventilation accounted for 54% of alveolar ventilation and 66% of the (PE\u2032 - Pa)O2 difference. But the steepness of the CO2 and O2 expirogram plotted against expired volume suggested a contribution of series in homogeneity due to incomplete gas mixing. <\/jats:p>","DOI":"10.1152\/jappl.1989.66.3.1258","type":"journal-article","created":{"date-parts":[[2017,12,21]],"date-time":"2017-12-21T09:32:12Z","timestamp":1513848732000},"page":"1258-1263","source":"Crossref","is-referenced-by-count":21,"title":["Pulmonary gas exchange in panting dogs"],"prefix":"10.1152","volume":"66","author":[{"given":"M.","family":"Meyer","sequence":"first","affiliation":[{"name":"Department of Physiology, Max Planck Institute for Experimental Medicine, Gottingen, Federal Republic of Germany."}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"G.","family":"Hahn","sequence":"additional","affiliation":[{"name":"Department of Physiology, Max Planck Institute for Experimental Medicine, Gottingen, Federal Republic of Germany."}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"C.","family":"Buess","sequence":"additional","affiliation":[{"name":"Department of Physiology, Max Planck Institute for Experimental Medicine, Gottingen, Federal Republic of Germany."}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"U.","family":"Mesch","sequence":"additional","affiliation":[{"name":"Department of Physiology, Max Planck Institute for Experimental Medicine, Gottingen, Federal Republic of Germany."}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"J.","family":"Piiper","sequence":"additional","affiliation":[{"name":"Department of Physiology, Max Planck Institute for Experimental Medicine, Gottingen, Federal Republic of Germany."}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"24","container-title":["Journal of Applied Physiology"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.physiology.org\/doi\/pdf\/10.1152\/jappl.1989.66.3.1258","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2019,9,8]],"date-time":"2019-09-08T11:31:27Z","timestamp":1567942287000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.physiology.org\/doi\/10.1152\/jappl.1989.66.3.1258"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[1989,3,1]]},"references-count":0,"journal-issue":{"issue":"3","published-print":{"date-parts":[[1989,3,1]]}},"alternative-id":["10.1152\/jappl.1989.66.3.1258"],"URL":"https:\/\/doi.org\/10.1152\/jappl.1989.66.3.1258","relation":{},"ISSN":["8750-7587","1522-1601"],"issn-type":[{"value":"8750-7587","type":"print"},{"value":"1522-1601","type":"electronic"}],"subject":[],"published":{"date-parts":[[1989,3,1]]}}}