End-Tidal Carbon Dioxide Monitoring During Cardiopulmonary Resuscitation

TLDR

Let's extract content. Background: two sentences: "The effectiveness of ongoing cardiopulmonary resuscitation efforts is difficult to evaluate." "Recent studies suggest that carbon dioxide excretion may be a useful noninvasive indicator of resuscitation from cardiac arrest." Purpose/Mechanism: combined: "A prospective clinical study was done to determine whether end-tidal carbon dioxide monitoring during cardiopulmonary resuscitation could be used as a prognostic indicator of resuscitation and survival." Also Mechanism: "Thirty-five cardiac arrests in 34 patients were monitored with capnometry during cardiopulmonary resuscitation during a 1-year period." Findings: multiple sentences: 9 patients resuscitated had higher average ETCO2 than 26 not resuscitated (15±4 vs 7±5 mm Hg). 3 patients survived to leave hospital had higher average ETCO2 than 32 nonsurvivors (17±6 vs 8±5). All 9 resuscitated had average ETCO2 >=10 mm Hg. No patient with average ETCO2 <10 mm Hg was resuscitated.

Abstract

The effectiveness of ongoing cardiopulmonary resuscitation efforts is difficult to evaluate. Recent studies suggest that carbon dioxide excretion may be a useful noninvasive indicator of resuscitation from cardiac arrest. A prospective clinical study was done to determine whether end-tidal carbon dioxide monitoring during cardiopulmonary resuscitation could be used as a prognostic indicator of resuscitation and survival. Thirty-five cardiac arrests in 34 patients were monitored with capnometry during cardiopulmonary resuscitation during a 1-year period. Nine patients who were successfully resuscitated had higher average end-tidal carbon dioxide partial pressures during cardiopulmonary resuscitation than 26 patients who could not be resuscitated (15±4 vs 7±5 mm Hg). The 3 patients who survived to leave the hospital had a higher average end-tidal carbon dioxide partial pressure than the 32 nonsurvivors (17 ± 6 vs 8 ± 5 mm Hg). All 9 patients who were successfully resuscitated had an average end-tidal carbon dioxide partial pressure of 10 mm Hg or greater. No patient with an average end-tidal carbon dioxide partial pressure of less than 10 mm Hg was resuscitated. Data from this prospective clinical trial indicate that findings from end-tidal carbon dioxide monitoring during cardiopulmonary resuscitation are correlated with resuscitation from and survival of cardiac arrest. (<i>JAMA</i>. 1989;262:1347-1351)