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"End tidal CO2"

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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
#1
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
#2
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/28750024/applying-time-frequency-analysis-to-assess-cerebral-autoregulation-during-hypercapnia
#3
Michał M Placek, Paweł Wachel, D Robert Iskander, Peter Smielewski, Agnieszka Uryga, Arkadiusz Mielczarek, Tomasz A Szczepański, Magdalena Kasprowicz
OBJECTIVE: Classic methods for assessing cerebral autoregulation involve a transfer function analysis performed using the Fourier transform to quantify relationship between fluctuations in arterial blood pressure (ABP) and cerebral blood flow velocity (CBFV). This approach usually assumes the signals and the system to be stationary. Such an presumption is restrictive and may lead to unreliable results. The aim of this study is to present an alternative method that accounts for intrinsic non-stationarity of cerebral autoregulation and the signals used for its assessment...
2017: PloS One
https://www.readbyqxmd.com/read/28734974/the-effects-of-pneumoperitoneum-and-the-steep-trendelenburg-position-on-heart-rate-variability-and-cerebral-oxygenation-during-robotic-sacrocolpopexy
#4
Emad Matanes, Amir Weissman, Aleksandr Rivlin, Roy Lauterbach, Amnon Amit, Zeev Wiener, Lior Lowenstein
STUDY OBJECTIVE: The aim of the current study was to investigate how steep Trendelenburg positioning with pneumoperitoneum modifies brain oxygenation and autonomic nervous system modulation of heart rate variability during robotic sacrocolpopexy. DESIGN: A 5-minute computerized ECG, cerebral O2 saturation (cSO2), systemic O2 saturation (sSO2), heart rate (HR), diastolic blood pressure (BP), systolic BP and end tidal CO2 tension were recorded immediately after anesthesia induction (baseline phase) and after alterations in positioning and in intra-abdominal pressure...
July 19, 2017: Journal of Minimally Invasive Gynecology
https://www.readbyqxmd.com/read/28731900/micro-and-macro-circulatory-changes-during-sepsis-and-septic-shock-in-a-rat-model
#5
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/28715240/the-effect-of-inspiratory-muscle-training-on-respiratory-variables-in-a-patient-with-ankylosing-spondylitis-a-case-report
#6
Marlon L Wong, Rachael G Anderson, Kelsey Garcia, Elissa M Housmann, Erin McHale, Gregory S Goldberger, Lawrence P Cahalin
Ankylosing Spondylitis (AS) presents with both musculoskeletal and cardiorespiratory pathophysiological manifestations. Inspiratory muscle training (IMT) may be a useful intervention to address deficits in respiratory and functional status. CASE DESCRIPTION: A 25-year-old male with AS initially sought treatment for low back and right hip pain, but 7 weeks of IMT was also provided due to abnormal respiratory performance. OUTCOMES: At baseline, the patient presented with a resting respiratory rate (RR) of 14...
July 17, 2017: Physiotherapy Theory and Practice
https://www.readbyqxmd.com/read/28695815/effectiveness-of-underbody-forced-air-warming-system-in-preventing-hypothermia-in-patients-undergoing-major-surgeries
#7
Hao Liang, Jie Yi
Objective To compare the effectiveness of the forced-air warming system and the conventional warming care practice in preventing hypothermia in patients undergoing major surgeries.Methods A total of 62 patients were enrolled in this study. Patients of both sexes,aged≥18 years,and with an ASA physical status Ⅰ-Ⅲ were included and allocated randomly into intervention group(n=30)or control group(n=32). Patients in the intervention group were provided forced-air warming,either prior to induction or during the surgery procedure depending on core temperature monitoring results...
June 20, 2017: Zhongguo Yi Xue Ke Xue Yuan Xue Bao. Acta Academiae Medicinae Sinicae
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
#8
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
#9
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/28662195/the-relationship-between-minute-ventilation-and-end-tidal-co2-in-intubated-and-spontaneously-breathing-patients-undergoing-procedural-sedation
#10
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/28659193/feasibility-of-a-prototype-newborn-resuscitation-monitor-to-study-transition-at-birth-measuring-heart-rate-and-ventilator-parameters-an-animal-experimental-study
#11
Jørgen E Linde, Joar Eilevstjønn, Knut Øymar, Hege L Ersdal
BACKGROUND: Every year, an estimated 10 million babies are born, non-breathing and in need of resuscitation. Advances in management have been made over the past decades, however, approximately 700.000 yearly deaths result from this global problem. A prototype newborn resuscitation monitor (NRM) (Laerdal Global Health, Stavanger, Norway) has been developed with the purpose of studying newborn resuscitation. The monitor has the ability to continuously display HR using dry electrode ECG technology, to measure tidal volume, pressure and end tidal CO2, and to store the results for later analysis...
June 28, 2017: BMC Research Notes
https://www.readbyqxmd.com/read/28654638/increased-inspiratory-resistance-affects-the-dynamic-relationship-between-blood-pressure-changes-and-subarachnoid-space-width-oscillations
#12
Magdalena Wszedybyl-Winklewska, Jacek Wolf, Ewa Swierblewska, Katarzyna Kunicka, Kamila Mazur, Marcin Gruszecki, Pawel J Winklewski, Andrzej F Frydrychowski, Leszek Bieniaszewski, Krzysztof Narkiewicz
BACKGROUND AND OBJECTIVE: Respiration is known to affect cerebrospinal fluid (CSF) movement. We hypothesised that increased inspiratory resistance would affect the dynamic relationship between blood pressure (BP) changes and subarachnoid space width (SAS) oscillations. METHODS: Experiments were performed in a group of 20 healthy volunteers undergoing controlled intermittent Mueller Manoeuvres (the key characteristic of the procedure is that a studied person is subjected to a controlled, increased inspiratory resistance which results in marked potentiation of the intrathoracic negative pressure)...
2017: PloS One
https://www.readbyqxmd.com/read/28642293/random-squat-stand-maneuvers-a-novel-approach-for-assessment-of-dynamic-cerebral-autoregulation
#13
Sam C Barnes, Naomi Ball, Victoria Joanna Haunton, Ronney B Panerai, Thompson G Robinson
BACKGROUND: Squat-stand maneuvers (SSM) have been used to assess dynamic cerebral autoregulation (dCA), but always at a fixed-frequency (FF). This study aimed to assess the use of random-frequency (RF) SSMs as a stimulus for measuring dCA, and to determine the reproducibility of FF and RFSSMs. METHOD: 29 healthy volunteers (19 male, mean age 23.0 [4.9] years) completed the study; 11 returned for a repeat visit (median 45 days). Heart rate, beat-to-beat blood pressure, middle cerebral artery (MCA) blood flow velocity, end-tidal CO2 and angle of the squat movement were measured...
June 22, 2017: Journal of Applied Physiology
https://www.readbyqxmd.com/read/28630395/cerebral-infarction-by-paradoxical-gas-embolism-during-laparoscopic-liver-resection-with-injury-of-the-hepatic-vessels-in-a-patient-without-a-right-to-left-systemic-shunt
#14
Toshiyasu Kawahara, Masahiro Hagiwara, Hiroyuki Takahashi, Mariko Tanaka, Koji Imai, Jun Sawada, Takayuki Kunisawa, Hiroyuki Furukawa
BACKGROUND Carbon dioxide (CO2) is believed to be the safest gas for laparoscopic surgery, which is a standard procedure. We experienced severe cerebral infarction caused by paradoxical CO2 embolism during laparoscopic liver resection with injury of the hepatic vessels despite the absence of a right-to-left systemic shunt. CASE REPORT A 60-year-old man was diagnosed with hepatocellular carcinoma in the right hepatic lobe secondary to alcoholic liver disease. We planned the laparoscopy-assisted liver resection...
June 20, 2017: American Journal of Case Reports
https://www.readbyqxmd.com/read/28620058/intermittent-hypercapnic-hypoxia-during-sleep-does-not-induce-ventilatory-long-term-facilitation-in-healthy-males
#15
Naomi Louise Deacon, Doug R McEvoy, Daniel L Stadler, Peter G Catcheside
Intermittent hypoxia induced ventilatory neuroplasticity is likely important in obstructive sleep apnea pathophysiology. Although concomitant CO2 levels and arousal state critically influence neuroplastic effects of intermittent hypoxia, no studies have investigated intermittent hypercapnic hypoxia effects during sleep in humans. Thus, the purpose of this study was to investigate if intermittent hypercapnic hypoxia during sleep induces neuroplasticity (ventilatory long-term facilitation and increased chemoreflex responsiveness) in humans...
June 15, 2017: Journal of Applied Physiology
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/28591467/the-effect-of-impella-cp-on-cardiopulmonary-physiology-during-venoarterial-extracorporeal-membrane-oxygenation-support
#17
Hoong Sern Lim
Left ventricle (LV) distension is a complication of venoarterial extracorporeal membrane oxygenation (VA-ECMO) support. The effects of Impella on the pulmonary circulatory physiology were studied in a single-center study of six consecutive patients on VA-ECMO support who had LV unloading with Impella. Right ventricular stroke volume, pulmonary hemodynamics, and partial pressure of end-tidal CO2 (PETCO2 ) were measured on echocardiogram, pulmonary artery catheter, and capnography, respectively. The addition of Impella CP increased total blood flow and reduced pulmonary artery wedge pressure...
June 7, 2017: Artificial Organs
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/28572755/graded-hypercapnia-calibrated-bold-beyond-the-iso-metabolic-hypercapnic-assumption
#19
Ian D Driver, Richard G Wise, Kevin Murphy
Calibrated BOLD is a promising technique that overcomes the sensitivity of conventional fMRI to the cerebrovascular state; measuring either the basal level, or the task-induced response of cerebral metabolic rate of oxygen consumption (CMRO2). The calibrated BOLD method is susceptible to errors in the measurement of the calibration parameter M, the theoretical BOLD signal change that would occur if all deoxygenated hemoglobin were removed. The original and most popular method for measuring M uses hypercapnia (an increase in arterial CO2), making the assumption that it does not affect CMRO2...
2017: Frontiers in Neuroscience
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
#20
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
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