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https://www.readbyqxmd.com/read/28346847/does-acute-normobaric-hypoxia-induce-anapyrexia-in-adult-humans
#1
Yongsuk Seo, Hayden D Gerhart, Jeremiah Vaughan, Jung-Hyun Kim, Ellen L Glickman
Seo, Yongsuk, Hayden D. Gerhart, Jeremiah Vaughan, Jung-Hyun Kim, and Ellen L. Glickman. Does acute normobaric hypoxia induce anapyrexia in adult humans? High Alt Med Biol 00:000-000, 2017.-Exposure to hypoxia is known to induce a reduction in core body temperature as a protective mechanism, which has been shown in both animals and humans. The purpose of this study was to test if acute exposure to normobaric hypoxia (NH) induces anapyrexia in adult humans in association with decreased peripheral oxygen saturation (SpO2)...
March 27, 2017: High Altitude Medicine & Biology
https://www.readbyqxmd.com/read/28343180/oxygen-saturation-trends-in-normal-healthy-term-newborns-normal-vaginal-delivery-vs-elective-cesarean-section
#2
Rashi Bhargava, Madhu Mathur, Jyoti Patodia
OBJECTIVES: To study the normal oxygen saturation trends and fetomaternal correlates in healthy term newborns within 30 min of life born by normal vaginal delivery (NVD) and elective cesarean section (CS). MATERIALS AND METHODS: A cross-sectional study was conducted on 200 healthy term newborns born by NVD and elective CS at a tertiary care centre. Routine care as per the Neonatal Resuscitation Program (NRP) 2015 (Wyckoff MH, Aziz K, Escobedo MB, Kapadia VS, Kattwinkel J, Perlman JM, et al...
March 27, 2017: Journal of Perinatal Medicine
https://www.readbyqxmd.com/read/28338405/physiological-responses-to-treadmill-running-with-body-weight-support-in-hypoxia-compared-to-normoxia
#3
Ben J Lee, Charles Douglas Thake
CONTEXT: Anecdotal reports suggest elite sports clubs combine lower body positive pressure (LBPP) rehabilitation with a hypoxic stimulus in order to maintain or increase physiological and metabolic strain, which are reduced during LBPP. However the effects of hypoxia on cardiovascular and metabolic response during LBPP rehabilitation is unknown. OBJECTIVE: Evaluate the use of normobaric hypoxia as a means to increase physiological strain during body weight supported (BWS) running...
March 24, 2017: Journal of Sport Rehabilitation
https://www.readbyqxmd.com/read/28337872/safety-and-pharmacodynamic-mechanism-of-ropivacaine-lumbar-anesthesia-in-cesarean-section
#4
Q Liu, J J Wang, H Y Yan, Y Q Wang, C W Qin, M L Li
Lumbar anesthesia is the preferred anesthetic approach for puerperae undergoing cesarean section in China. To observe the safety of administering different doses of ropivacaine for cesarean section and its pharmacodynamic mechanism, we randomly divided 180 pregnant women undergoing cesarean section into three groups: group A, 10 mg ropivacaine (0.50%); group B, 12 mg ropivacaine (0.50%); and group C, 14 mg ropivacaine (0.50%). Pharmacodynamic index, anesthesia quality and incidence of untoward reactions of each group were observed...
January 2017: Journal of Biological Regulators and Homeostatic Agents
https://www.readbyqxmd.com/read/28333563/effect-of-high-altitude-exposure-on-intraocular-pressure-using-goldmann-applanation-tonometry
#5
Gabriel Willmann, Kai Schommer, Maximilian Schultheiss, M Dominik Fischer, Karl-Ulrich Bartz-Schmidt, Florian Gekeler, Andreas Schatz
Willmann, Gabriel, Kai Schommer, Maximilian Schultheiss, M. Dominik Fischer, Karl-Ulrich Bartz-Schmidt, Florian Gekeler, and Andreas Schatz. Effect of high altitude exposure on intraocular pressure using Goldmann applanation tonometry. High Alt Med Biol. 00:000-000, 2017. AIMS: The aim of the study was to quantify changes of intraocular pressure (IOP) during exposure to 4559 m using the state-of-the-art method of Goldmann applanation tonometry for IOP measurement and to detect correlations between IOP and acute mountain sickness (AMS) in a prospective manner...
March 23, 2017: High Altitude Medicine & Biology
https://www.readbyqxmd.com/read/28326553/hypoxemia-after-single-shot-anesthesia-in-common-marmosets
#6
Naho Konoike, Miki Miwa, Akiyo Ishigami, Katsuki Nakamura
BACKGROUND: It remains unknown how single-shot anesthesia influences physical parameters, especially respiratory function and blood oxygen level of common marmosets (Callithrix jacchus) which came to be used for laboratory research. METHODS: We measured blood oxygen levels, both before and after oxygenation, in 13 common marmosets under two single-shot anesthesia conditions: ketamine/xylazine/atropine and alphaxalone. RESULTS AND CONCLUSIONS: We found that SpO2 values decreased to about 80% in the ketamine/xylazine/atropine protocol and fell just below 90% in the alphaxalone protocol...
March 21, 2017: Journal of Medical Primatology
https://www.readbyqxmd.com/read/28324969/a-clinical-study-of-short-term-sternal-photoplethysmography-recordings-from-patients-with-obstructive-airways-diseases
#7
Shadi S Chreiteh, Dorthe B Saadi, Bo Belhage, Nassim Nabipour, Karsten Hoppe, Erik V Thomsen
Traditionally, measurements of the oxygen saturation (SpO2) has been confound to the extremities. In this study, we therefore investigated the possibility for reliable estimation of clinically relevant SpO2 levels from photoplethysmography (PPG) obtained on the sternum of patients with obstructive airway diseases. We initiated the study with a calibration of a prototype sternal PPG sensor. In accordance with the ISO 80601-2-61:2011 guidelines, the calibration was conducted as a controlled desaturation study...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28323585/feasibility-of-hypoxic-challenge-testing-in-children-and-adolescents-with-congenital-heart-and-lung-disease
#8
Mandy E Spoorenberg, Erik H J Hulzebos, Tim Takken
BACKGROUND: This is a cross-sectional observational study to investigate the safety and feasibility of integrating changing body positions and physical activity in a hypoxic challenge test (HCT). The secondary objective was to compare oxygen saturation (Spo2) in two different locations (forehead and finger). METHODS: Included were 12 pediatric to young adult patients with congenital heart (N = 7) or lung disease (N = 5). An HCT was performed using breathing room air (21% oxygen) while sitting and breathing a normobaric hypoxic gas mixture (15% oxygen) through a facemask while seated, lying supine, standing, walking 3 km/h, and walking 5 km/h in a nonrandomized order...
December 1, 2016: Aerospace Medicine and Human Performance
https://www.readbyqxmd.com/read/28319673/the-effect-of-montelukast-on-mild-persistent-osa-after-adenotonsillectomy-in-children-a-preliminary-study
#9
Bing Wang, Jia Liang
This study sought to evaluate the treatment effect of montelukast in children with obstructive sleep apnea (OSA) after tonsillectomy and/or adenoidectomy (T&A). Fifty-eight children with persistent OSA after T&A were included and randomly divided into 2 groups: one group was administered montelukast for 12 weeks, and the other received no treatment. Clinical information, such as the apnea-hypopnea index (AHI) and nadir oxyhemoglobin saturation (nadir SpO2), was recorded. Symptoms of OSA were evaluated using the validated Pediatric Sleep Questionnaire (PSQ)...
March 1, 2017: Otolaryngology—Head and Neck Surgery
https://www.readbyqxmd.com/read/28318889/non-invasive-liver-ablation-using-histotripsy-preclinical-safety-study-in-an-in%C3%A2-vivo-porcine-model
#10
Eli Vlaisavljevich, Gabe Owens, Jonathan Lundt, Dejan Teofilovic, Kimberly Ives, Alexander Duryea, Jim Bertolina, Theodore H Welling, Zhen Xu
This study investigates the safety profile for use of histotripsy, a non-invasive ultrasonic ablation method currently being developed for the treatment of liver cancer, for liver ablation in an in vivo porcine model. Histotripsy treatments were applied to the liver and hepatic veins of 22 porcine subjects, with half of the subjects receiving systemic heparinization. Vital signs (heart rate, blood pressure, temperature, electrocardiogram and SpO2) were monitored throughout the procedure and for 1 h post-treatment...
March 16, 2017: Ultrasound in Medicine & Biology
https://www.readbyqxmd.com/read/28306414/cross-sectional-comparison-of-sleep-disordered-breathing-in-native-peruvian-highlanders-and-lowlanders
#11
Luu V Pham, Christopher Meinzen, Rafael S Arias, Noah G Schwartz, Adi Rattner, Catherine H Miele, Philip L Smith, Hartmut Schneider, J Jaime Miranda, Robert H Gilman, Vsevolod Y Polotsky, William Checkley, Alan R Schwartz
Pham, Luu V., Christopher Meinzen, Rafael S. Arias, Noah G. Schwartz, Adi Rattner, Catherine H. Miele, Philip L. Smith, Hartmut Schneider, J. Jaime Miranda, Robert H. Gilman, Vsevolod Y. Polotsky, William Checkley, and Alan R. Schwartz. Cross-sectional comparison of sleep-disordered breathing in native Peruvian highlanders and lowlanders. High Alt Med Biol. 18:11-19, 2017. BACKGROUND: Altitude can accentuate sleep disordered breathing (SDB), which has been linked to cardiovascular and metabolic diseases...
March 2017: High Altitude Medicine & Biology
https://www.readbyqxmd.com/read/28304253/ventricular-parasystole-in-a-neonatal-rhesus-macaque-macaca-mulatta
#12
Dalis E Collins, Brandy L Dozier, Jeffrey J Stanton, Lois Ma Colgin, Rhonda MacAllister
A 6-d-old Indian-origin female rhesus macaque (Macaca mulatta) presented with bradycardia shortly after sedation with ketamine. No other cardiac abnormalities were apparent. Approximately 2 wk after the initial presentation, the macaque was again bradycardic and exhibited a regularly irregular arrhythmia on a prestudy examination. ECG, echocardiography, blood pressure measurement, SpO2 assessment, and a CBC analysis were performed. The echocardiogram and bloodwork were normal, but the infant was hypotensive at the time of echocardiogram...
December 1, 2016: Comparative Medicine
https://www.readbyqxmd.com/read/28302696/achievement-of-saturation-targets-in-preterm-infants-32%C3%A2-weeks-gestational-age-in-the-delivery-room
#13
Lani Nui White, Marta Thio, Louise S Owen, C Omar Kamlin, Samantha Sloss, Stuart B Hooper, Peter G Davis, Jennifer A Dawson
BACKGROUND: To reduce the risks of hypoxia and hyperoxia in preterm infants in the delivery room; national and international guidelines recommend titrating supplemental oxygen delivery to achieve specific oxygen saturation (SpO2) targets. Our aim was to measure the proportion of time infants <32 weeks' gestation spent within and outside prescribed SpO2 targets during the first 10 min after birth. METHOD: Prospective observational study using data from a preductal SpO2 sensor and oxygen analyser measuring fraction of inspired oxygen (FiO2) in the inspiratory limb of the respiratory circuit...
March 16, 2017: Archives of Disease in Childhood. Fetal and Neonatal Edition
https://www.readbyqxmd.com/read/28302419/intravenous-15-isoflurane-lipid-nanoemulsion-for-general-anesthesia-in-dogs
#14
Claudio C Natalini, Carolina L Krahn, Priscila B S Serpa, Joanna E Griffith, Ricardo Miyasaka de Almeida
OBJECTIVE: To investigate the efficacy of a new intravenous (IV) nanoemulsified isoflurane formulation for maintenance of general anesthesia in dogs. STUDY DESIGN: Prospective, crossover, experimental study. ANIMALS: Seven healthy, mature, mixed-breed dogs, three male and four female, weighing 11.5 ± 1.5 kg. METHODS: Anesthesia was induced with propofol for instrumentation. Measurements were obtained before administration of either inhaled isoflurane (Iso-I) or IV 15% isoflurane-loaded lipid nanoemulsion (Iso-nano)...
January 7, 2017: Veterinary Anaesthesia and Analgesia
https://www.readbyqxmd.com/read/28298780/effects-of-inhaled-nitrous-oxide-on-the-induction-dose-and-time-requirements-of-propofol-a-prospective-randomized-double-blind-study
#15
Kavita Jain, Surendra Kumar Sethi, Mamta Damor, Neena Jain
CONTEXT: Propofol is a commonly used induction agent during general anesthesia. As a sole agent, it does not provide any strong analgesic effect. The nitrous oxide (N2O) used along with propofol for induction of anesthesia augments the induction characteristics and reduces the dose of propofol. AIMS: To study the effects of inhaled N2O on the induction dose and time of propofol during general anesthesia and also its hemodynamic response and adverse effects. SETTINGS AND DESIGN: The present research is a prospective, randomized, double-blind comparative study...
January 2017: Anesthesia, Essays and Researches
https://www.readbyqxmd.com/read/28296782/the-safety-and-efficacy-of-dexmedetomidine-remifentanil-in-children-undergoing-flexible-bronchoscopy-a-retrospective-dose-finding-trial
#16
Xia Li, Xue Wang, Shuguang Jin, Dongsheng Zhang, Yanuo Li
Flexible bronchoscopy is more and more used for diagnosis and management of various pulmonary diseases in pediatrics. As poor coordination of children, the procedure is usually performed under general anesthesia with spontaneous or controlled ventilation to increase children and bronchoscopists' safety and comfort. Previous studies have reported that dexmedetomidine (DEX) could be safely and effectively used for flexible bronchoscopy in both adulate and children. However, there is no trial to evaluate the dose-finding of safety and efficacy of dexmedetomidine-remifentanil (DEX-RF) in children undergoing flexible bronchoscopy...
March 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28296212/red-cell-distribution-width-and-uric-acid-in-patients-with-obstructive-sleep-apnea
#17
A Sunnetcioglu, H Gunbatar, H Yıldız
BACKGROUND: Obstructive sleep apnea (OSA), characterized by recurrent partial or complete pharyngeal closure, resulting in apnea or hypopnea, is closely associated with cardiovascular disorders (CVDs). Elevated red cell distribution width (RDW) and serum uric acid (SUA) levels have also been associated with CVDs and the consequent mortality. The aim of this study is to determine SUA levels and RDW in patients with OSA which is major a risk factor for CVDs. METHODS: This was a retrospective study involving 600 subjects evaluated by polysomnography...
March 13, 2017: Clinical Respiratory Journal
https://www.readbyqxmd.com/read/28291457/impact-of-oxygenation-status-on-the-noninvasive-measurement-of-hemoglobin
#18
Dina Gomaa, Dario Rodriquez, Michael Petro, Thomas C Blakeman, Richard D Branson
BACKGROUND: Noninvasive monitoring of hemoglobin (SpHgb) via pulse oximetry has the potential to alert caregivers to blood loss. Previous studies have demonstrated that changes in oxygenation may impact accuracy. METHODS: Twenty normal volunteers were monitored using SpHgb at sea level, during ascent to 14,000 feet, at 14,000 feet with 100% oxygen delivery, and again at sea level. Each period consisted of 15 minutes of monitoring. SpHgb measurements were compared to a blood sample using Bland Altman analysis...
March 2017: Military Medicine
https://www.readbyqxmd.com/read/28286765/digital-lengthening-to-treat-finger-deficiency-an-experience-of-201-digits-in-104-patients
#19
Zhenyu Ding, Xiaozhong Zhu, Kai Fu, Xianyou Zheng
Objectives. We evaluated the results of digital lengthening by distraction and second-stage bone graft. Methods. We treated finger deficiency of 201 digits in 104 patients (68 males, 36 females) by digital distraction and second-stage bone graft. The distraction was performed with a rate of 1 mm/day (for the first ten days) and 0.5 mm/day followed by using a self-designed bilateral tubal-helical external fixator. The mean follow-up period was 42 months (range 6 to 60 months). Results. The mean lengthening was 29...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28283852/short-term-general-anesthesia-for-retro-bulbar-block-in-ophthalmic-surgery-generates-no-significant-hypercapnia
#20
Werner Baulig, Monica Weber, Beatrice Beck-Schimmer, Oliver M Theusinger, Peter Biro
To assess the impact of short time hypnosis for retro-bulbar anesthesia on ventilation in patients undergoing ophthalmic surgery of the anterior eye chamber. In all patients, a combined continuous transcutaneous carbon dioxide tension (PtcCO2) and partial oxygen saturation (SpO2) measurement was applied in addition to routine monitoring. To enable unconscious application of retro-bulbar anesthesia, intravenous thiopental was given in one to multiple bolus doses. Transient breathing support included chin lift, Esmarch maneuver and manual hand-bag ventilation via face mask...
March 11, 2017: Journal of Clinical Monitoring and Computing
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