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End-tidal carbon dioxide

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https://www.readbyqxmd.com/read/29775407/effect-of-healthy-aging-and-sex-on-middle-cerebral-artery-blood-velocity-dynamics-during-moderate-intensity-exercise
#1
Jaimie L Ward, Jesse C Craig, Yumei Liu, Eric Dennis Vidoni, Rebecca Malesky, David C Poole, Sandra A Billinger
Cerebral blood flow (CBF) velocity measured in the middle cerebral artery (MCAV ) increases with finite kinetics during moderate intensity exercise and both the amplitude and dynamics of the response provide invaluable insights into the controlling mechanisms. The MCAV response following exercise onset is well fit to an exponential model in young individuals but remains to be characterized in their older counterparts. The responsiveness of vasomotor control degrades with advancing age, especially in skeletal muscle, and we tested the hypothesis that older subjects would evince a slower and reduced MCAV response to exercise...
May 18, 2018: American Journal of Physiology. Heart and Circulatory Physiology
https://www.readbyqxmd.com/read/29769232/end-tidal-carbon-dioxide-output-in-manual-cardiopulmonary-resuscitation-versus-active-compression-decompression-device-during-prehospital-quality-controlled-resuscitation-a-case-series-study
#2
Piritta Anniina Setälä, Ilkka Tapani Virkkunen, Antti Jaakko Kämäräinen, Heini Sisko Annamari Huhtala, Janne Severi Virta, Arvi Mikael Yli-Hankala, Sanna Elisa Hoppu
BACKGROUND: Active compression-decompression (ACD) devices have enhanced end-tidal carbon dioxide (ETCO2 ) output in experimental cardiopulmonary resuscitation (CPR) studies. However, the results in out-of-hospital cardiac arrest (OHCA) patients have shown inconsistent outcomes, and earlier studies lacked quality control of CPR attempts. We compared manual CPR with ACD-CPR by measuring ETCO2 output using an audiovisual feedback defibrillator to ensure continuous high quality resuscitation attempts...
May 16, 2018: Emergency Medicine Journal: EMJ
https://www.readbyqxmd.com/read/29764553/-interposed-abdominal-pulling-pressing-cardiopulmonary-resuscitation-improve-the-resuscitation-effect-for-patients-with-cardiac-arrest
#3
Dabing Wang, Xiaonan Feng, Yujuan Han
OBJECTIVE: To study the impact of interposed abdominal pulling-pressing cardiopulmonary resuscitation (IAPP-CPR) for patients with cardiac arrest (CA). METHODS: A prospective study was conducted. A total of 122 CA patients admitted to Department of Emergency of Shandong Provincial Mining Industry Group Company Central Hospital from July 2013 to December 2017 were enrolled. They were divided into standard cardiopulmonary resuscitation (S-CPR) group (n = 62) and IAPP-CPR group (n = 60) according to order of admission...
May 2018: Zhonghua Wei Zhong Bing Ji Jiu Yi Xue
https://www.readbyqxmd.com/read/29762314/effectiveness-of-dexmedetomidine-versus-propofol-on-extubation-times-length-of-stay-and-mortality-rates-in-adult-cardiac-surgery-patients-a-systematic-review-and-meta-analysis
#4
John Nguyen, Noel Nacpil
OBJECTIVE: To determine the effects of dexmedetomidine versus propofol on extubation time, intensive care unit (ICU) length of stay, total hospital length of stay and in-hospital mortality rates in cardiac surgery patients. INTRODUCTION: Recovery from cardiovascular surgery involves weaning from mechanical ventilation. Mechanical ventilation decreases the work of breathing for patients by inhaling oxygen and exhaling carbon dioxide via a ventilator or breathing machine...
May 2018: JBI Database of Systematic Reviews and Implementation Reports
https://www.readbyqxmd.com/read/29760838/comparing-quick-sequential-organ-failure-assessment-scores-to-end-tidal-carbon-dioxide-as-mortality-predictors-in-prehospital-patients-with-suspected-sepsis
#5
Christopher L Hunter, Salvatore Silvestri, George Ralls, Amanda Stone, Ayanna Walker, Neal Mangalat, Linda Papa
Introduction: Early identification of sepsis significantly improves outcomes, suggesting a role for prehospital screening. An end-tidal carbon dioxide (ETCO2 ) value ≤ 25 mmHg predicts mortality and severe sepsis when used as part of a prehospital screening tool. Recently, the Quick Sequential Organ Failure Assessment (qSOFA) score was also derived as a tool for predicting poor outcomes in potentially septic patients. Methods: We conducted a retrospective cohort study among patients transported by emergency medical services to compare the use of ETCO2 ≤ 25 mmHg with qSOFA score of ≥ 2 as a predictor of mortality or diagnosis of severe sepsis in prehospital patients with suspected sepsis...
May 2018: Western Journal of Emergency Medicine
https://www.readbyqxmd.com/read/29757757/use-of-an-airway-exchange-catheter-assisted-extubation-with-continuous-end-tidal-carbon-dioxide-monitoring-in-a-pediatric-patient-with-a-known-difficult-airway-a-case-report
#6
Courtney C Yegian, Lana M Volz, Richard E Galgon
Tracheal extubation in children with known difficult airways is associated with an increased risk of adverse events. Currently, there is no reliable measure to predict the need for emergent reintubation due to airway inadequacy. Airway exchange catheter-assisted extubation has been shown to be a useful adjunct in decreasing the risk of adverse events due to failed extubation. We report a case of using an airway exchange catheter-assisted extubation with continuous end-tidal carbon dioxide monitoring for a pediatric patient with a known difficult airway...
May 11, 2018: A&A practice
https://www.readbyqxmd.com/read/29756414/arterial-to-end-tidal-carbon-dioxide-tension-difference-co-2-gap-as-a-prognostic-marker-for-adverse-outcomes-in-emergency-department-patients-presenting-with-suspected-sepsis
#7
Amith Shetty, Sebastian Sparenberg, Kristian Adams, Selwyn Selvedran, Benjamin Tang, Kim Hanna, Jonathan Iredell
OBJECTIVE: The arterial to end-tidal carbon dioxide tension difference (CO2 gap) correlates with physiologic dead space. The prognostic value of increased CO2 gap in trauma and respiratory distress patients is documented. Transpulmonary arteriovenous shunting is identified as a predictor of mortality in non-pulmonary sepsis. We set out to investigate the prognostic value of the CO2 gap in a pilot study of patients with suspected sepsis from non-respiratory causes. METHODS: Patients presenting to tertiary Australian ED with suspected sepsis (n = 215) underwent near-simultaneous end-tidal carbon dioxide and partial pressure of carbon dioxide measurements...
May 13, 2018: Emergency Medicine Australasia: EMA
https://www.readbyqxmd.com/read/29750662/supplemental-carbon-dioxide-stabilizes-the-upper-airway-in-volunteers-anesthetized-with-propofol
#8
Katarina Jennifer Ruscic, Janne Bøgh Stokholm, Johann Patlak, Hao Deng, Jeroen Cedric Peter Simons, Timothy Houle, Jürgen Peters, Matthias Eikermann
BACKGROUND: Propofol impairs upper airway dilator muscle tone and increases upper airway collapsibility. Preclinical studies show that carbon dioxide decreases propofol-mediated respiratory depression. We studied whether elevation of end-tidal carbon dioxide (PETCO2) via carbon dioxide insufflation reverses the airway collapsibility (primary hypothesis) and impaired genioglossus muscle electromyogram that accompany propofol anesthesia. METHODS: We present a prespecified, secondary analysis of previously published experiments in 12 volunteers breathing via a high-flow respiratory circuit used to control upper airway pressure under propofol anesthesia at two levels, with the deep level titrated to suppression of motor response...
May 10, 2018: Anesthesiology
https://www.readbyqxmd.com/read/29720756/anaesthesia-for-laparoscopic-nephrectomy-does-end-tidal-carbon-dioxide-measurement-correlate-with-arterial-carbon-dioxide-measurement
#9
Nithin Jayan, Jaya Susan Jacob, Mohan Mathew
Background and Aims: Not many studies have explored the correlation between arterial carbon dioxide tension (PaCO2 ) and end-tidal carbon dioxide tension (ETCO2 ) in surgeries requiring pneumoperitoneum of more than 1 hour duration with the patient in non-supine position. The aim of our study was to evaluate the correlation of ETCO2 with PaCO2 in patients undergoing laparoscopic nephrectomy under general anaesthesia. Methods: A descriptive study was performed in thirty patients undergoing laparoscopic nephrectomy from September 2014 to August 2015...
April 2018: Indian Journal of Anaesthesia
https://www.readbyqxmd.com/read/29720508/the-role-of-cardiopulmonary-exercise-tests-in-pulmonary-arterial-hypertension
#10
REVIEW
Stefania Farina, Michele Correale, Noemi Bruno, Stefania Paolillo, Elisabetta Salvioni, Roberto Badagliacca, Piergiuseppe Agostoni
Despite recent advances in the therapeutic management of patients affected by pulmonary arterial hypertension (PAH), survival remains poor. Prompt identification of the disease, especially in subjects at increased risk of developing PAH, and prognostic stratification of patients are a necessary target of clinical practice but remain challenging. Cardiopulmonary exercise test (CPET) parameters, particularly peak oxygen uptake, end-tidal carbon dioxide tension and the minute ventilation/carbon dioxide production relationship, emerged as new prognostic tools for PAH patients...
June 30, 2018: European Respiratory Review: An Official Journal of the European Respiratory Society
https://www.readbyqxmd.com/read/29700664/halving-the-volume-of-anaconda-initial-clinical-experience-with-a-new-small-volume-anaesthetic-reflector-in-critically-ill-patients-a-quality-improvement-project
#11
Hagen Bomberg, Franziska Meiser, Sarah Zimmer, Martin Bellgardt, Thomas Volk, Daniel I Sessler, Heinrich V Groesdonk, Andreas Meiser
AnaConDa-100 ml (ACD-100, Sedana Medical, Uppsala, Sweden) is well established for inhalation sedation in the intensive care unit. But because of its large dead space, the system can retain carbon dioxide (CO2 ) and increase ventilatory demands. We therefore evaluated whether AnaConDa-50 ml (ACD-50), a device with half the internal volume, reduces CO2 retention and ventilatory demands during sedation of invasively ventilated, critically ill patients. Ten patients participated in this cross-over protocol. After sedation with isoflurane via ACD-100 for 24 h, the 5-h observation period started...
April 26, 2018: Journal of Clinical Monitoring and Computing
https://www.readbyqxmd.com/read/29690757/hypercapnia-does-not-shorten-emergence-time-from-propofol-anesthesia-a-pilot-randomized-clinical-study
#12
Ki-Hyug Kwon, Hansu Bae, Hyun Gu Kang, Junyong In
Background: The elimination of anesthetic agents is a decisive factor in the emergence from general anesthesia. In this pilot study, we hypothesized that hypercapnia would decrease the emergence time from propofol anesthesia by increasing cardiac output and cerebral blood flow. Methods: A total of 32 patients were randomly divided into two groups based on the end-tidal carbon dioxide values: 30 mmHg (the hypocapnia group) and 50 mmHg (the hypercapnia group). Propofol and remifentanil were infused to maintain a bispectral index of 40-50...
April 25, 2018: Korean Journal of Anesthesiology
https://www.readbyqxmd.com/read/29689105/cerebral-desaturation-in-heart-failure-potential-prognostic-value-and-physiologic-basis
#13
Yu-Jen Chen, Jong-Shyan Wang, Chih-Chin Hsu, Pyng-Jing Lin, Feng-Chun Tsai, Ming-Shien Wen, Chi-Tai Kuo, Shu-Chun Huang
Cerebral tissue oxygen saturation (SctO2) reflects cerebral perfusion and tissue oxygen consumption, which decline in some patients with heart failure with reduced ejection fraction (HFrEF) or stroke, especially during exercise. Its physiologic basis and clinical significance remain unclear. We aimed to investigate the association of SctO2 with oxygen transport physiology and known prognostic factors during both rest and exercise in patients with HFrEF or stroke. Thirty-four HFrEF patients, 26 stroke patients, and 17 healthy controls performed an incremental cardiopulmonary exercise test using a bicycle ergometer...
2018: PloS One
https://www.readbyqxmd.com/read/29685358/the-gradient-between-arterial-and-end-tidal-carbon-dioxide-predicts-in-hospital-mortality-in-post-cardiac-arrest-patient
#14
Yong Won Kim, Sung Oh Hwang, Hee Seung Kang, Kyoung-Chul Cha
PURPOSE: We investigated the predictive value of the gradient between arterial carbon dioxide (PaCO2 ) and end-tidal carbon dioxide (ETCO2 ) (Pa-ETCO2 ) in post-cardiac arrest patients for in-hospital mortality. METHODS: This retrospective observational study evaluated cardiac arrest patients admitted to the emergency department of a tertiary university hospital. The PaCO2 and ETCO2 values at 6, 12, and 24 h after return of spontaneous circulation (ROSC) were obtained from medical records and Pa-ETCO2 gap was calculated as the difference between PaCO2 and ETCO2 at each time point...
April 14, 2018: American Journal of Emergency Medicine
https://www.readbyqxmd.com/read/29680394/the-clinical-effects-of-a-low-dose-dexmedetomidine-constant-rate-infusion-in-isoflurane-anesthetized-cats
#15
B T Simon, E M Scallan, C D Coursey, W M Kiehl, E J Moore
The aim of this study was to evaluate the effects of a low dose dexmedetomidine constant rate infusion (CRI) on cardiopulmonary function, inhalant anesthetic concentration and recovery in isoflurane anesthetized cats. In a prospective, randomized, blinded, controlled design, 12 cats undergoing anesthesia for ovariohysterectomy were administered hydromorphone (0.1mg/kg) intramuscularly, propofol (4.3-7.8mg/kg) intravenously and maintained with isoflurane. During isoflurane anesthesia, the cats were administered either a dexmedetomidine loading dose (0...
April 2018: Veterinary Journal
https://www.readbyqxmd.com/read/29679183/effects-of-respiratory-and-applied-muscle-tensing-interventions-on-responses-to-a-simulated-blood-draw-among-individuals-with-high-needle-fear
#16
Jennifer M Kowalsky, Robert Conatser, Thomas Ritz, Christopher R France
Fear of blood and needles increases risk for presyncopal symptoms. Applied muscle tension can prevent or attenuate presyncopal symptoms; however, it is not universally effective. This study examined the effects of applied muscle tension, a respiratory intervention, and a no treatment control condition, on presyncopal symptoms and cerebral oxygenation, during a simulated blood draw with individuals highly fearful of needles. Participants (n = 95) completed questionnaires, physiological monitoring, and two trials of a simulated blood draw with recovery...
April 20, 2018: Journal of Behavioral Medicine
https://www.readbyqxmd.com/read/29649316/effect-of-one-lung-ventilation-on-end-tidal-carbon-dioxide-during-cardiopulmonary-resuscitation-in-a-pig-model-of-cardiac-arrest
#17
Dong Hyun Ryu, Yong Hun Jung, Kyung Woon Jeung, Byung Kook Lee, Young Won Jeong, Jong Geun Yun, Dong Hun Lee, Sung Min Lee, Tag Heo, Yong Il Min
Unrecognized endobronchial intubation frequently occurs after emergency intubation. However, no study has evaluated the effect of one-lung ventilation on end-tidal carbon dioxide (ETCO2) during cardiopulmonary resuscitation (CPR). We compared the hemodynamic parameters, blood gases, and ETCO2 during one-lung ventilation with those during conventional two-lung ventilation in a pig model of CPR, to determine the effect of the former on ETCO2. A randomized crossover study was conducted in 12 pigs intubated with double-lumen endobronchial tube to achieve lung separation...
2018: PloS One
https://www.readbyqxmd.com/read/29629927/physiology-directed-cardiopulmonary-resuscitation-advances-in-precision-monitoring-during-cardiac-arrest
#18
Alexandra M Marquez, Ryan W Morgan, Catherine E Ross, Robert A Berg, Robert M Sutton
PURPOSE OF REVIEW: We review the recent advances in physiologic monitoring during cardiac arrest and offer an evidence-based framework for prioritizing physiologic targets during cardiopulmonary resuscitation (CPR). RECENT FINDINGS: Current CPR guidelines recommend a uniform approach for all patients in cardiac arrest, but newer data support a precision strategy that uses the individual patient's physiology to guide resuscitation. Coronary perfusion pressure and arterial DBP are associated with survival outcomes in recent animal and human studies...
June 2018: Current Opinion in Critical Care
https://www.readbyqxmd.com/read/29629058/effect-of-propofol-and-isoflurane-on-gas-exchange-parameters-following-one-lung-ventilation-in-thoracic-surgery-a-double-blinded-randomized-controlled-clinical-trial
#19
Shima Sheybani, Alireza Sharifian Attar, Sogol Golshan, Shadi Sheibani, Majid Rajabian
Background: The use of anesthetic drugs with minimal inhibitory effects on the hypoxic pulmonary vasoconstriction (HPV) could have a decisive role in preventing the hypoxemia during one-lung ventilation (OLV). Objective: The aim of this study was to compare the effects of propofol and isoflurane on the changes in gas exchange parameters following OLV in thoracic surgery. Methods: This double-blinded randomized controlled clinical trial was conducted on patients who were candidates for elective right thoracotomy referred to the central operating room of Ghaem Hospital in Mashhad, Iran, during February 2016-2017...
February 2018: Electronic Physician
https://www.readbyqxmd.com/read/29628583/pressure-controlled-volume-guaranteed-mode-improves-respiratory-dynamics-during-laparoscopic-cholecystectomy-a-comparison-with-conventional-modes
#20
Apoorwa Kothari, Deepa Baskaran
Background: Pneumoperitoneum and altered positioning 1in laparoscopic cholecystectomy predispose to alterations in cardiorespiratory physiology. We compared the effects of volume controlled, pressure controlled, and the newly introduced pressure controlled-volume guaranteed ventilation (PCV-VG) modes of ventilation on respiratory mechanics and oxygenation during laparoscopic cholecystectomy. Materials and Methods: Seventy-five physical status American Society of Anesthesiologists Classes I and II patients with normal lungs undergoing laparoscopic cholecystectomy were randomly allocated to receive volume controlled ventilation (VCV), pressure-controlled ventilation (PCV), or PCV-VG modes of ventilation during general anesthesia...
January 2018: Anesthesia, Essays and Researches
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