Article
Multidisciplinary Sciences
Liyang Feng, Yanxiang Liu, Yi Wang, Hong Zhou, Ming Wu, Tie Li
Summary: In this article, a small size, high-performance, and wide range CO2 infrared gas sensor is reported, which integrates high efficiency optical-thermal-electrical conversion technology and has the advantages of low power consumption and fast response speed. A monitoring system for CO2 concentration installed on a mask using this sensor achieved good results.
Article
Environmental Sciences
Sarah J. Russell, Lisamarie Windham-Myers, Ellen J. Stuart-Haentjens, Brian A. Bergamaschi, Frank Anderson, Patty Oikawa, Sara H. Knox
Summary: Tidal marshes globally capture 11.4-87.0 Tg C yr(-1), but climate change can hinder their carbon sequestration potential. Brackish marshes are less sensitive to changes in salinity compared to freshwater or saltwater wetlands. Drought-induced salinization leads to reduced primary productivity and decreased carbon exchange, highlighting the importance of considering salinity in wetland carbon models for future climate resilience.
ENVIRONMENTAL RESEARCH LETTERS
(2023)
Article
Emergency Medicine
Murat Duyan, Nafis Vural
Summary: This study investigated the diagnostic value of non-invasively measuring End-tidal carbon dioxide (ETCO2) at the bedside in distinguishing between unstable angina pectoris (UAP) and non-cardiac chest pain in patients presenting to the emergency department. The results showed that ETCO2 had excellent diagnostic power in detecting UAP and may serve as a potential biomarker for differentiating UAP from non-cardiac chest pain.
AMERICAN JOURNAL OF EMERGENCY MEDICINE
(2023)
Article
Obstetrics & Gynecology
Daijiro Takahashi, Koko Goto, Kei Goto
Summary: The study found that ETCO(2) can serve as a good surrogate for PaCO(2) when VT is high and ETT leak is low.
JOURNAL OF PERINATOLOGY
(2021)
Article
Biophysics
Emma Williams, Nadja Bednarczuk, Theodore Dassios, Anne Greenough
Summary: This study aimed to determine the factors influencing the relationship between blood carbon dioxide (pCO(2)) and end-tidal carbon dioxide (EtCO2) in ventilated newborn infants. The results suggest that end-tidal capnography monitoring has the potential to predict blood carbon dioxide values within the neonatal population.
PHYSIOLOGICAL MEASUREMENT
(2022)
Article
Multidisciplinary Sciences
Josef G. Thundiyil, Alex T. Williams, Ian Little, Margaret Stutsman, Jay G. Ladde, Linda Papa
Summary: This study found that end tidal carbon dioxide (ETCO2) levels were correlated with altitude and the occurrence of acute mountain sickness (AMS), and ETCO2 was a better predictor of AMS than altitude.
Article
Medicine, General & Internal
Hyun Jung Lee, Jae Hee Woo, Sooyoung Cho, Sunyoung Moon, Sook Whan Sung
Summary: A retrospective study found that transcutaneous carbon dioxide (PtcCO2) monitoring accurately measures arterial carbon dioxide and is more sensitive in predicting hypercapnia during non-intubated video-assisted thoracoscopic surgery (VATS) compared to nasal end-tidal carbon dioxide (PetCO2) monitoring. These results suggest that concurrent PtcCO2 monitoring can provide safer respiratory management for patients undergoing non-intubated VATS.
JOURNAL OF CLINICAL MEDICINE
(2023)
Article
Critical Care Medicine
Carl-Henrik Olander, Per Vikholm, Petter Schiller, Laila Hellgren
Summary: The study found that the level of ETCO2 at the end of mechanical CPR is inversely associated with the extent of brainstem and renal injury following ECPR. The group with higher ETCO2 levels showed better carotid blood pressure, oxygen delivery index, and brain injury at the end of ECPR.
Article
Medicine, General & Internal
Jinrong Wang, Jianjun Zhang, Yajing Liu, Huimian Shang, Li Peng, Zhaobo Cui
Summary: This study found a good positive correlation between PETCO2 and PaCO2 in patients on invasive mechanical ventilation under different conditions.
Article
Pediatrics
Weitao Wang, Zhifa Zhao, Xinjie Tian, Xinggang Ma, Liang Xu, Guanglin Shang
Summary: The present study aimed to investigate the correlation and accuracy between transcutaneous carbon dioxide partial pressure (PtcCO(2)) and arterial carbon dioxide pressure (PaCO2) in pediatric laparoscopic surgery. The results showed a close correlation between PtcCO(2) and PaCO2. PtcCO(2) can accurately estimate PaCO2 and be used as an auxiliary monitoring indicator in anesthesia management for laparoscopic surgery in children, but it is not a substitute for PetCO(2).
Article
Cardiac & Cardiovascular Systems
Carl-Henrik Olander, Per Vikholm, Rickard Lindblom, Petter Schiller, Laila Hellgren
Summary: This study suggests that blood flow and blood pressure have an impact on ECPR during CPR, while lactate and pH may be indicators of successful ECPR. During CPR, lactate-pyruvate ratio, glycerol, and glutamate all increased, especially in the group with longer CPR time.
JOURNAL OF CARDIOVASCULAR TRANSLATIONAL RESEARCH
(2022)
Article
Critical Care Medicine
Aleksandra A. Abrahamowicz, Catherine R. Counts, Kyle R. Danielson, Natalie E. Bulger, Charles Maynard, David J. Carlbom, Erik R. Swenson, Andrew J. Latimer, Betty Yang, Michael R. Sayre, Nicholas J. Johnson
Summary: This study investigated the association between the difference of PaCO2 and ETCO2 and hospital mortality and neurologic outcome. The results showed that the difference of PaCO2-ETCO2 on hospital arrival was not associated with survival to hospital discharge or neurologic status. Therefore, these measures should not be used for prognostication after out-of-hospital cardiac arrest (OHCA).
Article
Critical Care Medicine
Sebastiaan Bossers, Floor Mansvelder, Stephan Loer, Christa Boer, Frank Bloemers, Esther M. M. Van Lieshout, Dennis Den Hartog, Nico Hoogerwerf, Joukje van der Naalt, Anthony Absalom, Lothar A. Schwarte, Jos W. R. O. Twisk, Patrick Schober, RAIN PROTECT Collaborators
Summary: Severe traumatic brain injury is a leading cause of mortality and morbidity, and the arterial partial pressure of CO2 can influence cerebral perfusion and intracranial pressure. This study investigated the association between prehospital end-tidal CO2 levels and mortality in patients with severe traumatic brain injury. The results showed that end-tidal CO2 values below 35 mmHg were associated with increased mortality.
INTENSIVE CARE MEDICINE
(2023)
Article
Environmental Sciences
Margaret Capooci, Rodrigo Vargas
Summary: This study investigated the patterns and drivers of soil CO2 efflux in temperate tidal marshes, finding that soil CO2 efflux is influenced by factors such as air temperature. There were large discrepancies between manual and automated soil CO2 efflux measurements. New technical approaches are needed to accurately estimate the carbon balance in wetland ecosystems.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Agronomy
Khatab Abdalla, Macdex Mutema, Pauline Chivenge, Vincent Chaplot
Summary: The combination of no-tillage with postharvest controlled-grazing showed potential to increase SOC and reduce soil CO2 emissions, but was associated with topsoil compaction. Long-term assessment under different environmental, crop, and soil conditions is still required.
