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End tidal CO2

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https://www.readbyqxmd.com/read/29801509/successful-ventilation-through-a-r%C3%A3-sch-intubation-guide-catheter-in-severe-laryngotracheal-stenosis
#1
Victoria Van Regemorter, Arnaud Potié, Sandra Schmitz, Jean-Louis Scholtes, Laurent Veevaete, Michel Van Boven
BACKGROUND: Providing adequate ventilation may remain complex in patients with severe proximal laryngotracheal stenosis, especially when the airway is shared with the surgeon during tracheal resection surgery. We describe an effective alternative to standard endotracheal intubation using a Rüsch flexible intubation guide catheter. METHODS: In two patients undergoing tracheal repair surgery, we failed to insert a 5.0 inner diameter endotracheal tube (6.9 mm outer diameter) or a 6...
May 25, 2018: Journal of Otolaryngology—Head & Neck Surgery
https://www.readbyqxmd.com/read/29790382/towards-respiratory-gated-retrograde-intrarenal-surgery-a-prospective-randomized-controlled-study
#2
Vasileios Kourmpetis, Snir Dekalo, Tomer Nir, Nadav Levy, Yuval Bar-Yosef, Avi Beri, Ofer Yossepowitch, Mario Sofer
INTRODUCTION: We set out to investigate whether general anesthesia with low ventilation (LV, respiratory rate ≤8/min and tidal volume <500 ml) could reduce renal mobility and thereby facilitate improved retrograde intrarenal surgery (RIRS) compared to general anesthesia with standard ventilation (SV). MATERIALS AND METHODS: All 60 consecutive patients who presented for RIRS in our department from September 1, 2017 to December 31, 2017 were prospectively randomized 1:1 into one group that was selected to receive SV and another that received LV...
May 23, 2018: Journal of Endourology
https://www.readbyqxmd.com/read/29787413/halving-the-volume-of-anaconda-evaluation-of-a-new-small-volume-anesthetic-reflector-in-a-test-lung-model
#3
Hagen Bomberg, Franziska Meiser, Philipp Daume, Martin Bellgardt, Thomas Volk, Daniel I Sessler, Heinrich V Groesdonk, Andreas Meiser
BACKGROUND: Volatile anesthetics are increasingly used for sedation in intensive care units. The most common administration system is AnaConDa-100 mL (ACD-100; Sedana Medical, Uppsala, Sweden), which reflects volatile anesthetics in open ventilation circuits. AnaConDa-50 mL (ACD-50) is a new device with half the volumetric dead space. Carbon dioxide (CO2) can be retained with both devices. We therefore compared the CO2 elimination and isoflurane reflection efficiency of both devices. METHODS: A test lung constantly insufflated with CO2 was ventilated with a tidal volume of 500 mL at 10 breaths/min...
May 21, 2018: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/29771608/paced-breathing-and-phrenic-nerve-responses-evoked-by-epidural-stimulation-following-complete-high-cervical-spinal-cord-injury-in-rats
#4
Tatiana Bezdudnaya, Michael A Lane, Vitaliy Marchenko
Spinal cord injury (SCI) at the level of cervical segments often results in life-threatening respiratory complications and requires long-term mechanical ventilator assistance. Thus, restoring diaphragm activity and regaining voluntary control of breathing are the primary clinical goals for patients with respiratory dysfunction following cervical SCI. Epidural stimulation (EDS) is a promising strategy that has been explored extensively for non-respiratory functions, and to a limited extent within the respiratory system...
May 17, 2018: Journal of Applied Physiology
https://www.readbyqxmd.com/read/29764553/-interposed-abdominal-pulling-pressing-cardiopulmonary-resuscitation-improve-the-resuscitation-effect-for-patients-with-cardiac-arrest
#5
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/29763713/practice-of-mechanical-ventilation-in-cardiac-arrest-patients-and-effects-of-targeted-temperature-management-a-substudy-of-the-targeted-temperature-management-trial
#6
Matthew B A Harmon, David M P van Meenen, Annelou L I P van der Veen, Jan M Binnenkade, Josef Dankiewicz, Florian Ebner, Niklas Nielsen, Paolo Pelosi, Marcus J Schultz, Janneke Horn, Hans Friberg, Nicole P Juffermans
AIMS: Mechanical ventilation practices in patients with cardiac arrest are not well described. Also, the effect of temperature on mechanical ventilation settings is not known. The aims of this study were 1) to describe practice of mechanical ventilation and its relation with outcome 2) to determine effects of different target temperatures strategies (33 °C versus 36 °C) on mechanical ventilation settings. METHODS: This is a substudy of the TTM-trial in which unconscious survivors of a cardiac arrest due to a cardiac cause were randomized to two TTM strategies, 33 °C (TTM33) and 36 °C (TTM36)...
May 12, 2018: Resuscitation
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/29739857/how-ventilation-is-delivered-during-cardiopulmonary-resuscitation-an-international-survey
#8
Ricardo Luiz Cordioli, Laurent Brochard, Laurent Suppan, Aissam Lyazidi, François Templier, Abdo Khoury, Stephane Delisle, Dominique Savary, Jean-Christophe Richard
BACKGROUND: Recommendations regarding ventilation during cardiopulmonary resuscitation (CPR) are based on a low level of scientific evidence. We hypothesized that practices about ventilation during CPR might be heterogeneous and may differ worldwide. To address this question, we surveyed physicians from several countries on their practices during CPR. METHODS: We used a Web-based opinion survey. Links to the survey were sent by e-mail newsletters and displayed on the Web sites of medical societies involved in CPR practice from December 2013 to March 2014...
May 8, 2018: Respiratory Care
https://www.readbyqxmd.com/read/29736280/the-effect-of-perioperative-fluid-management-on-intraocular-pressure-during-gynecologic-laparoscopic-pelvic-surgery
#9
Izakson Alexander, Sindawi Ahmad, Ben Shachar Inbar, Pikkel Joseph
Purpose: Visual loss is a devastating perioperative complication that can result from elevated intraocular pressure (IOP). The Trendelenburg position during surgery increases IOP. The purpose of this study was to quantify IOP changes in patients undergoing laparoscopic hysterectomy, at different time points and body positions throughout the procedure, and to compare fluctuations of IOP during the perioperative period according to two fluid management protocols. Methods: Thirty women scheduled to undergo elective gynecologic laparoscopic pelvic surgery were randomly allocated to receive a liberal or restrictive fluid management protocol...
2018: Journal of Ophthalmology
https://www.readbyqxmd.com/read/29734208/improved-lung-recruitment-and-oxygenation-during-mandatory-ventilation-with-a-new-expiratory-ventilation-assistance-device-a-controlled-interventional-trial-in-healthy-pigs
#10
Johannes Schmidt, Christin Wenzel, Marlene Mahn, Sashko Spassov, Heidi Cristina Schmitz, Silke Borgmann, Ziwei Lin, Jörg Haberstroh, Stephan Meckel, Sebastian Eiden, Steffen Wirth, Hartmut Buerkle, Stefan Schumann
BACKGROUND: In contrast to conventional mandatory ventilation, a new ventilation mode, expiratory ventilation assistance (EVA), linearises the expiratory tracheal pressure decline. OBJECTIVE: We hypothesised that due to a recruiting effect, linearised expiration oxygenates better than volume controlled ventilation (VCV). We compared the EVA with VCV mode with regard to gas exchange, ventilation volumes and pressures and lung aeration in a model of peri-operative mandatory ventilation in healthy pigs...
May 4, 2018: European Journal of Anaesthesiology
https://www.readbyqxmd.com/read/29720756/anaesthesia-for-laparoscopic-nephrectomy-does-end-tidal-carbon-dioxide-measurement-correlate-with-arterial-carbon-dioxide-measurement
#11
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/29700664/halving-the-volume-of-anaconda-initial-clinical-experience-with-a-new-small-volume-anaesthetic-reflector-in-critically-ill-patients-a-quality-improvement-project
#12
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/29688788/respiratory-effects-of-low-versus-high-tidal-volume-with-or-without-positive-end-expiratory-pressure-in-anesthetized-dogs-with-healthy-lungs
#13
Valentina De Monte, Antonello Bufalari, Salvatore Grasso, Fabienne Ferrulli, Alberto Maria Crovace, Luca Lacitignola, Francesco Staffieri
OBJECTIVE To evaluate the impact of 2 tidal volumes (TV s) with or without positive end-expiratory pressure (PEEP) on lung mechanics, aeration, and gas exchange in healthy anesthetized dogs. ANIMALS 40 mixed-breed dogs with healthy lungs. PROCEDURES Anesthetized dogs were randomly assigned to 4 groups (n = 10/group) with different ventilatory settings: TV of 8 mL/kg and PEEP of 0 cm H2 O (low TV group), TV of 8 mL/kg and PEEP of 5 cm H2 O (low TV plus PEEP group), TV of 15 mL/kg and PEEP of 0 cm H2 O (high TV group), or TV of 15 mL/kg and PEEP of 5 cm H2 O (high TV plus PEEP group)...
May 2018: American Journal of Veterinary Research
https://www.readbyqxmd.com/read/29668325/is-cushing-mechanism-a-dynamic-blood-pressure-stabilizing-system-insights-from-granger-causality-analysis-of-spontaneous-blood-pressure-and-cerebral-blood-flow
#14
Saqib Saleem, Paul D Teal, Connor A Howe, Michael M Tymko, Philip N Ainslie, Yu-Chieh Tzeng
Blood pressure regulation is widely recognised as being integral to the control of end-organ perfusion but it remains unclear whether end-organ perfusion also plays a role in driving changes in blood pressure (BP). A randomized and placebo controlled study design was followed to examine the feedback relationships between very-low-frequency fluctuations in BP and cerebral blood flow (CBF) in humans under placebo treatment and α1-adrenergic blockade. To determine the causal relations among haemodynamic variables, BP, middle cerebral artery blood velocity (MCAv), and end-tidal CO2 time-series were decimated, low-pass filtered (<0...
April 18, 2018: American Journal of Physiology. Regulatory, Integrative and Comparative Physiology
https://www.readbyqxmd.com/read/29665427/end-tidal-co-2-guided-automated-robot-cpr-system-in-the-pig-preliminary-communication
#15
Gil Joon Suh, Jaeheung Park, Jung Chan Lee, Sang Hoon Na, Woon Yong Kwon, Kyung Su Kim, Taegyun Kim, Yoon Sun Jung, Jung-In Ko, So Mi Shin, Kyoung Min You
BACKGROUND: Our aim was to compare the efficacy of the end-tidal CO2 -guided automated robot CPR (robot CPR) system with manual CPR and mechanical device CPR. METHODS: We developed the algorithm of the robot CPR system which automatically finds the optimal compression position under the guidance of end-tidal CO2 feedback in swine models of cardiac arrest. Then, 18 pigs after 11 min of cardiac arrest were randomly assigned to one of three groups, robot CPR, LUCAS CPR, and manual CPR groups (n = 6 each group)...
June 2018: Resuscitation
https://www.readbyqxmd.com/read/29661389/esketamine-counters-opioid-induced-respiratory-depression
#16
K Jonkman, E van Rijnsoever, E Olofsen, L Aarts, E Sarton, M van Velzen, M Niesters, A Dahan
BACKGROUND: Opioids can produce life-threatening respiratory depression. This study tested whether subanaesthetic doses of esketamine stimulate breathing in an established human model of opioid-induced respiratory depression. METHODS: In a study with a randomised, double blind, placebo controlled, crossover design, 12 healthy, young volunteers of either sex received a dose escalating infusion of esketamine (cumulative dose 40 mg infused in 1 h) on top of remifentanil-induced respiratory depression...
May 2018: British Journal of Anaesthesia
https://www.readbyqxmd.com/read/29644221/physiologic-factors-influencing-the-arterial-to-end-tidal-co-2-difference-and-the-alveolar-dead-space-fraction-in-spontaneously-breathing-anesthetised-horses
#17
Martina Mosing, Stephan H Böhm, Anthea Rasis, Giselle Hoosgood, Ulrike Auer, Gerardo Tusman, Regula Bettschart-Wolfensberger, Johannes P Schramel
The arterial to end-tidal CO2 difference (P(a-ET) CO2 ) and alveolar dead space fraction (VDalvfrac  = P(a-ET) CO2 /PaCO2 ), are used to estimate Enghoff's "pulmonary dead space" (V/QEng ), a factor which is also influenced by venous admixture and other pulmonary perfusion abnormalities and thus is not just a measure of dead space as the name suggests. The aim of this experimental study was to evaluate which factors influence these CO2 indices in anesthetized spontaneously breathing horses. Six healthy adult horses were anesthetized in dorsal recumbency breathing spontaneously for 3 h...
2018: Frontiers in Veterinary Science
https://www.readbyqxmd.com/read/29629989/an-open-loop-physiologic-model-based-decision-support-system-can-provide-appropriate-ventilator-settings
#18
Dan Stieper Karbing, Savino Spadaro, Nilanjan Dey, Riccardo Ragazzi, Elisabetta Marangoni, Francesca Dalla Corte, Federico Moro, David Lodahl, Niklas Schurmann Hansen, Robert Winding, Stephen Edward Rees, Carlo Alberto Volta
OBJECTIVES: To evaluate the physiologic effects of applying advice on mechanical ventilation by an open-loop, physiologic model-based clinical decision support system. DESIGN: Prospective, observational study. SETTING: University and Regional Hospitals' ICUs. PATIENTS: Varied adult ICU population. INTERVENTIONS: Advice were applied if accepted by physicians for a period of up to 4-8 hours. MEASUREMENTS AND MAIN RESULTS: Seventy-two patients were included for data analysis...
April 6, 2018: Critical Care Medicine
https://www.readbyqxmd.com/read/29628575/hemodynamic-airway-pressure-and-capnometric-changes-and-perioperative-outcome-in-pediatric-laparoscopic-inguinal-herniorrhaphy-a-comparison-with-open-inguinal-herniorrhaphy
#19
Jyoti Garg, Suniti Kale, Nikki Sabharwal, Deepak Bagga, Anoop Raj Gogia
Background: Laparoscopic procedures which are now established in pediatric population as well exposes the child to supplemental cardiorespiratory changes due to increase in intraabdominal pressure (IAP) and hypercarbia. Aims: This study aims to analyze the effects of pneumoperitoneum and postural modifications on cardiorespiratory system (primary outcome) during pediatric laparoscopic herniorrhaphy (LH) and its comparison with open herniorrhaphy (OH) and assessment of overall perioperative outcome (secondary outcome)...
January 2018: Anesthesia, Essays and Researches
https://www.readbyqxmd.com/read/29628557/intraocular-pressure-changes-during-laparoscopic-surgery-in-trendelenburg-position-in-patients-anesthetized-with-propofol-based-total-intravenous-anesthesia-compared-to-sevoflurane-anesthesia-a-comparative-study
#20
Gagandeep Kaur, Mamta Sharma, Poonam Kalra, Shobha Purohit, Kanchan Chauhan
Background: Intraocular pressure (IOP) is increased during laparoscopic surgery with Trendelenburg position and may contribute to deleterious effects on optic nerve in susceptible patients. Aims: The primary objective of this study is to compare the effects of propofol-based total intravenous anesthesia (TIVA) with those of sevoflurane anesthesia on IOP in patients undergoing lower abdominal laparoscopic surgery in Trendelenburg position. Secondary objectives are to compare hemodynamic changes, mean arterial pressure (MAP), end-tidal CO2 , and peak inspiratory pressure changes...
January 2018: Anesthesia, Essays and Researches
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