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https://www.readbyqxmd.com/read/28802098/response-time-of-indirectly-accessed-gas-exchange-depends-on-measurement-method
#1
Jakub Rafl, Filip Kulhanek, Petr Kudrna, Vaclav Ort, Karel Roubik
Noninvasive techniques are routinely used for assessment of tissue effects of lung ventilation. However, comprehensive studies of the response time of the methods are scarce. The aim of this study was to compare the response time of noninvasive methods for monitoring of gas exchange to sudden changes in the composition of the inspired gas. A prospective experimental study with 16 healthy volunteers was conducted. A ventilation circuit was designed that enabled a fast change in the composition of the inspiratory gas mixture while allowing spontaneous breathing...
August 12, 2017: Biomedizinische Technik. Biomedical Engineering
https://www.readbyqxmd.com/read/28793002/laryngeal-tube-suction-for-airway-management-during-in-hospital-emergencies
#2
Haitham Mutlak, Christian Friedrich Weber, Dirk Meininger, Colleen Cuca, Kai Zacharowski, Christian Byhahn, Richard Schalk
OBJECTIVE: The role of supraglottic airway devices in emergency airway management is highlighted in international airway management guidelines. We evaluated the application of the new generation laryngeal tube suction (LTS-II/LTS-D) in the management of in-hospital unexpected difficult airway and cardiopulmonary resuscitation. METHODS: During a seven-year period, patients treated with a laryngeal tube who received routine anesthesia and had an unexpected difficult airway (Cormack Lehane Grade 3-4), who underwent cardiopulmonary resuscitation, or who underwent cardiopulmonary resuscitation outside the operating room and had a difficult airway were evaluated...
July 2017: Clinics
https://www.readbyqxmd.com/read/28761526/a-study-of-partial-pressure-of-arterial-carbon-dioxide-and-end-tidal-carbon-dioxide-correlation-in-intraoperative-and-postoperative-period-in-neurosurgical-patients
#3
Pallavi Gaur, Minal Harde, Pinakin Gujjar, Devanand Deosarkar, Rakesh Bhadade
BACKGROUND AND AIM: Monitoring carbon dioxide (CO2) is of utmost importance in neurosurgical patients. It is measured by partial pressure of arterial CO2 (PaCO2) and end-tidal CO2 (ETCO2). We aimed to study the correlation between PaCO2 and ETCO2 in neurosurgical patients in the intraoperative and postoperative period on mechanical ventilation in Postanesthesia Care Unit (PACU). METHODOLOGY: This was prospective observational study done at tertiary care teaching public hospital over a period of 1 year...
July 2017: Asian Journal of Neurosurgery
https://www.readbyqxmd.com/read/28758083/successful-extubation-after-weaning-failure-by-noninvasive-ventilation-in-patients-with-neuromuscular-disease-case-series
#4
Sun Mi Kim, Seong-Woong Kang, Young-Chul Choi, Yoon Ghil Park, Yu Hui Won
OBJECTIVE: To report successful cases of extubation from invasive mechanical ventilation at our institution using pulmonary rehabilitation consisting of noninvasive ventilation (NIV) in neuromuscular patients with experience of reintubation. METHODS: Patients who experienced extubation failure via the conventional weaning strategy but afterwards had extubation success via NIV were studied retrospectively. Continuous end-tidal CO2 (ETCO2) and pulse oxyhemoglobin saturation (SpO2) monitoring were performed...
June 2017: Annals of Rehabilitation Medicine
https://www.readbyqxmd.com/read/28749272/ketamine-medetomidine-and-ketamine-medetomidine-midazolam-anesthesia-in-captive-cheetahs-acinonyx-jubatus-comparison-of-blood-pressure-and-kidney-blood-flow
#5
Julia Stagegaard, Arne Hørlyck, Helle B Hydeskov, Mads F Bertelsen
Six clinically healthy captive cheetahs ( Acinonyx jubatus ) were anesthetized twice using two different drug combinations to investigate if blood pressure and kidney blood flow are affected by medetomidine dosage. Protocol KM (2.0 mg/kg ketamine and 0.05 mg/kg medetomidine) was compared with protocol KMM (2.0 mg/kg ketamine, 0.02 mg/kg medetomidine, and 0.1 mg/kg midazolam). Heart rate (HR), respiratory rate (RR), body temperature, end-tidal carbon dioxide pressure (ETCO2), and anesthetic depth were monitored every 10 min...
June 2017: Journal of Zoo and Wildlife Medicine: Official Publication of the American Association of Zoo Veterinarians
https://www.readbyqxmd.com/read/28741716/influence-of-lateral-position-and-pneumoperitoneum-on-oropharyngeal-leak-pressure-with-two-types-of-laryngeal-mask-airways
#6
S Lan, Y Zhou, J T Li, Z Z Zhao, Y Liu
BACKGROUND: An important parameter to monitor adequate ventilation for laryngeal mask airway (LMA) is its oropharyngeal leak pressure (OLP). This study was designed to evaluate and compare the effect of lateral position and pneumoperitoneum on the OLP and ventilation efficiency between LMA™ Proseal (PLMA) and LMA™ Supreme (SLMA). METHODS: Patients were randomized to receive either the PLMA or the SMLA. The OLP was assessed in both the supine position and the lateral position with or without pneumoperitoneum...
July 25, 2017: Acta Anaesthesiologica Scandinavica
https://www.readbyqxmd.com/read/28731900/micro-and-macro-circulatory-changes-during-sepsis-and-septic-shock-in-a-rat-model
#7
Tianfeng Hua, Xiaobo Wu, Wei Wang, Hao Li, Jennifer Bradley, Mary Ann Peberdy, Joseph P Ornato, Wanchun Tang
Microcirculation is the motor of sepsis. In the present study, we investigated whether microcirculatory alterations occur prior to changes of systemic hemodynamics in a rat model of cecum ligation and puncture (CLP)-induced sepsis. We further investigated renal microcirculatory changes during sepsis and compared those with buccal microcirculation. Twelve male Sprague-Dawley rats were randomized into a sham control group (n = 6) and a CLP group (n = 6). Perfused microvessel density (PVD) and microvascular flow index (MFI) were evaluated using sidestream dark field (SDF) video microscopy at baseline, 60, 120, 180, 240, 300, and 360 minutes following CLP...
July 20, 2017: Shock
https://www.readbyqxmd.com/read/28704248/low-end-tidal-carbon-dioxide-at-the-onset-of-emergent-trauma-surgery-is-associated-with-nonsurvival-a-case-series
#8
Roman Dudaryk, Danielle K Bodzin, Juliet J Ray, Craig S Jabaley, Richard R McNeer, Richard H Epstein
BACKGROUND: End-tidal carbon dioxide (EtCO2) is a valuable marker of the return of adequate circulation following cardiac arrest due to medical causes. Previously, the prognostic value of capnography in trauma has been studied among limited populations in prehospital and emergency department settings. We aimed to investigate the relationship between early intraoperative EtCO2 and nonsurvival of patients undergoing emergency surgery at a level 1 academic trauma center as a case series...
July 10, 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/28695980/arterial-to-end-tidal-carbon-dioxide-difference-in-children-undergoing-mechanical-ventilation-of-the-lungs-during-general-anaesthesia
#9
C Onodi, P K Bühler, J Thomas, A Schmitz, M Weiss
Capnography (ETCO2 ) is routinely used as a non-invasive estimate of arterial carbon dioxide (PaCO2 ) levels in order to modify ventilatory settings, whereby it is assumed that there is a positive gap between PaCO2 and ETCO2 of approximately 0.5 kPa. However, negative values (ETCO2 > PaCO2 ) can be observed. We retrospectively analysed arterial to end-tidal carbon dioxide differences in 799 children undergoing general anaesthesia with mechanical ventilation of the lungs in order to elucidate predictors for a negative gap...
July 11, 2017: Anaesthesia
https://www.readbyqxmd.com/read/28691980/sudden-increase-in-etco2-during-upper-endoscopy-under-general-endotracheal-anesthesia-suggests-the-presence-of-tracheoesophageal-fistula-a-case-report
#10
Rosemarie E Garcia Getting, Cynthia L Harris
Acquired tracheoesophageal fistula is a rare and devastating complication of lung cancer. The diagnosis is typically confirmed on barium esophagram. We report a case of a patient with lung cancer status after palliative chemoradiotherapy and esophageal stenting for malignant stenosis who presented with signs and symptoms suggestive of tracheoesophageal fistula; however, no evidence of fistula was found on barium esophagram. During subsequent esophagogastroduodenoscopy, the presence of a fistula was verified by capnography, given extreme elevations in end-tidal CO2 concentrations during endoscopic CO2 insufflation...
August 15, 2017: A & A Case Reports
https://www.readbyqxmd.com/read/28675094/effect-of-increased-body-mass-index-on-complication-rates-during-laryngotracheal-surgery-utilizing-jet-ventilation
#11
Rachel A Barry, Daniel S Fink, Dusty Cole Pourciau, Kasey Hayley, Rachael Lanius, Schuylor Hayley, Eddy Sims, Andrew J McWhorter
Objective Jet ventilation has been used for >30 years as an anesthetic modality for laryngotracheal surgery. Concerns exist over increased risk with elevated body mass index (BMI). We reviewed our experience using jet ventilation for laryngotracheal stenosis to assess for complication rates with substratification by BMI. Study Design Case series with chart review. Setting Tertiary care center. Subjects and Methods A total of 126 procedures with jet ventilation were identified from October 2006 to December 2014...
June 1, 2017: Otolaryngology—Head and Neck Surgery
https://www.readbyqxmd.com/read/28672136/comparison-of-changes-in-respiratory-dynamics-immediately-after-the-start-of-propofol-sedation-with-or-without-midazolam
#12
Ayano Hagiwara, Nobuyuki Matsuura, Tatsuya Ichinohe
PURPOSE: The aim of this study was to compare changes in respiratory dynamics starting immediately after administration of propofol alone or a combination of propofol and midazolam. MATERIALS AND METHODS: Twenty-seven healthy adult volunteers participated in a randomized crossover study of undergoing sedation with propofol alone (P group) or with a combination of propofol and midazolam (PM group). In the P group, continuous infusion of propofol through a target-controlled infusion (TCI) pump was started with the target effect site (ES) concentration set at 1...
June 12, 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28663642/capnographic-analysis-of-minimum-mandatory-flow-rate-for-hudson-face-mask-a-randomized-double-blind-study
#13
Pranjali Kurhekar, T Krishna Prasad, Buddhan Rajarathinam, M S Raghuraman
BACKGROUND: Oxygen supplementation through Hudson type face mask is frequently used in perioperative settings. Hudson mask is a variable rate performance device with the risk of rebreathing. Studies using capnography to find out an actual fraction of rebreathing in spontaneously breathing patients are not available. AIMS: In this study, we analyzed the effects of different flow rates through Hudson mask with capnography on fractional inspired carbon dioxide (FiCO2)...
April 2017: Anesthesia, Essays and Researches
https://www.readbyqxmd.com/read/28662195/the-relationship-between-minute-ventilation-and-end-tidal-co2-in-intubated-and-spontaneously-breathing-patients-undergoing-procedural-sedation
#14
Jaideep H Mehta, George W Williams, Brian C Harvey, Navneet K Grewal, Edward E George
BACKGROUND: Monitoring respiratory status using end tidal CO2 (EtCO2), which reliably reflects arterial PaCO2 in intubated patients under general anesthesia, has often proven both inaccurate and inadequate when monitoring non-intubated and spontaneously breathing patients. This is particularly important in patients undergoing procedural sedation (e.g., endoscopy, colonoscopy). This can be undertaken in the operating theater, but is also often delivered outside the operating room by non-anesthesia providers...
2017: PloS One
https://www.readbyqxmd.com/read/28632528/false-low-etco2-measurements-from-carbon-dioxide-sampling-nasal-cannula-and-how-to-correct-the-situation
#15
Jonathan V Roth
No abstract text is available yet for this article.
August 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/28612267/auto-trilevel-versus-bilevel-positive-airway-pressure-ventilation-for-hypercapnic-overlap-syndrome-patients
#16
Mei Su, De Huai, Juan Cao, Ding Ning, Rong Xue, Meijie Xu, Mao Huang, Xilong Zhang
PURPOSE: Although bilevel positive airway pressure (Bilevel PAP) therapy is usually used for overlap syndrome (OS), there is still a portion of OS patients in whom Bilevel PAP therapy could not simultaneously eliminate residual apnea events and hypercapnia. The current study was expected to explore whether auto-trilevel positive airway pressure (auto-trilevel PAP) therapy with auto-adjusting end expiratory positive airway pressure (EEPAP) can serve as a better alternative for these patients...
June 13, 2017: Sleep & Breathing, Schlaf & Atmung
https://www.readbyqxmd.com/read/28605206/the-effect-of-a-holistic-self-management-plan-on-asthma-control
#17
Eirini Grammatopoulou, Emmanouil K Skordilis, Aikaterini Haniotou, Zarotis John, Spyros Athanasopoulos
The holistic self-management plan includes lifelong actions that enable patients to cope with their disease. The present study was designed to evaluate the effect of a holistic self-management plan on asthma control. A 12-month controlled study was conducted. Adult patients with mild-to-moderate asthma (n = 24) who attended the emergency asthma department were randomized to two groups: One group followed four educational sessions and three personal home sessions (n = 12), while a second group received a short manual with asthma information (n = 12)...
June 12, 2017: Physiotherapy Theory and Practice
https://www.readbyqxmd.com/read/28578157/carbon-dioxide-fluctuations-are-associated-with-changes-in-cerebral-oxygenation-and-electrical-activity-in-infants-born-preterm
#18
Laura Marie Louise Dix, Lauren Carleen Weeke, Linda Simone de Vries, Floris Groenendaal, Willem Baerts, Frank van Bel, Petra Maria Anna Lemmers
OBJECTIVES: To evaluate the effects of acute arterial carbon dioxide partial pressure changes on cerebral oxygenation and electrical activity in infants born preterm. STUDY DESIGN: This retrospective observational study included ventilated infants born preterm with acute fluctuations of continuous end-tidal CO2 (etCO2) as a surrogate marker for arterial carbon dioxide partial pressure, during the first 72 hours of life. Regional cerebral oxygen saturation and fractional tissue oxygen extraction were monitored with near-infrared spectroscopy...
August 2017: Journal of Pediatrics
https://www.readbyqxmd.com/read/28571235/effect-of-dexmedetomidine-versus-fentanyl-on-haemodynamic-response-to-patients-undergoing-elective-laparoscopic-surgery-a-double-blinded-randomized-controlled-study
#19
Lovina Neil, Ashok Patel
INTRODUCTION: Dexmedetomidine, an α2 agonist, can be used as an adjuvant in general anaesthesia as it attenuates the stress response to various noxious stimuli and helps in maintaining the perioperative haemodynamic stability along with sedation and not causing any significant respiratory depression in the postoperative period. AIM: To study the difference in haemodynamic responses of dexmedetomidine and fentanyl in patients undergoing laparoscopic surgery. MATERIALS AND METHODS: Sixty patients were divided into two groups of 30 each randomly...
April 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28538608/assessing-dehydration-employing-end-tidal-carbon-dioxide-in-children-with-vomiting-and-diarrhea
#20
Stephen B Freedman, David W Johnson, Alberto Nettel-Aguirre, Angelo Mikrogianakis, Sarah Williamson-Urquhart, Nicholas Monfries, Adam Cheng
OBJECTIVE: Serum bicarbonate reflects dehydration severity in children with gastroenteritis. Previous work in children receiving intravenous rehydration has correlated end-tidal carbon dioxide (EtCO2) with serum bicarbonate. We evaluated whether EtCO2 predicts weight change in children with vomiting and/or diarrhea. METHODS: A prospective cohort study was conducted. Eligible children were 3 months to 10 years old and presented for emergency department (ED) care because of vomiting and/or diarrhea...
May 23, 2017: Pediatric Emergency Care
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