What point(s) on the capnographic waveform represents) a mixture of alveolar gas and dead space gas12/23/2023 ![]() Systematic approaches to waveform interpretation for other parameters have been documented and published. Capnography waveforms can be insightful for clinical intervention and require a similar systematic approach, much like ECG interpretation. With any monitoring parameter, effective application is dependent upon interpreting the parameter values (eg etCO2, RR, waveforms, and trends) within the broader context of the patient’s signs, symptoms, and other clinical data available, and then using their using their expertise to assimilate this information to inform best interventions. The difference is in their knowledge and ability to correctly apply and interpret the results in a meaningful manner. What’s the difference between these two groups? Does it work for some and not for others? Of course not. Undervalued, Underutilizedĭespite the vast number of societal guidelines and clinical articles touting its value, we have met clinicians who state they do not see much value in capnography. ![]() This value has led to capnography being recommended or required for various applications by over 80 clinical societies in over 100 guidelines, standards, and statements in just the past eight years. ![]() These range from common indications such as monitoring for apneas, hypoventilation, hyperventilation, and airway integrity during procedural sedation or in postoperative patients to monitoring ETT placement, quality of chest compression, and return of spontaneous circulation during resuscitation efforts to screening for diabetic ketoacidosis, pulmonary embolism, bronchospasm, and even sepsis in the emergency setting. When used appropriately, capnography has been cited as meaningful in providing key, often life-sustaining, information in dozens of different clinical applications. Despite the vast number of guidelines touting capnography, some clinicians may not see its value due to a lack of knowledge and ability to correctly apply and interpret results in a meaningful manner.īy Gina Farquharson, MS, MBA, RRT-NPS, CPPS, and Gregory K Spratt, BS, RRT, CPFTĬapnography was first proposed for use in the operating room in 1978 and has since become the standard of care for monitoring ventilation.1 Capnography is rapidly growing in use for intubated and nonintubated applications across hospital environments including the ICU, resuscitation, procedural sedation, and postoperative monitoring of patients receiving opioid analgesia. ![]()
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