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Ambulatory oxygen

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https://www.readbyqxmd.com/read/28105685/evolution-of-gas-permeable-membranes-for-extracorporeal-membrane-oxygenation
#1
REVIEW
Torin Yeager, Shuvo Roy
Gas permeable membranes are a vital component of extracorporeal membrane oxygenation systems. Over more than half a century, membrane fabrication and packaging technology have progressed to enable safer and longer duration use of respiratory life support. Current research efforts seek to improve membrane efficiency and hemocompatibility, with the aim of producing smaller and more robust systems for ambulatory use. This review explores past and present innovations in oxygenator technology, suggesting possible applications of state-of-the-art membrane fabrication methods to address shortcomings of earlier concepts...
January 19, 2017: Artificial Organs
https://www.readbyqxmd.com/read/28104101/preventing-hospitalizations-from-acute-exacerbations-of-chronic-obstructive-pulmonary-disease
#2
REVIEW
Jessica E Burchette, G Douglas Campbell, Stephen A Geraci
Chronic obstructive lung disease is among the leading causes of adult hospital admissions and readmissions in the United States. Preventing acute exacerbations is the primary approach in therapy. Combinations of smoking cessation, pulmonary rehabilitation, vaccinations and inhaled and oral medications may all reduce the overall risk of acute exacerbations. When prevention is unsuccessful, treatment of exacerbations often does not require hospitalization but can be safely executed in the outpatient setting. In the patient who does not require mechanical ventilation or who manifests respiratory acidosis, oxygen supplementation, frequent short-acting inhaled bronchodilators, oral corticosteroids and often antibiotics can abort the decompensation and sometimes return the patient to his or her pre-attack baseline lung function...
January 2017: American Journal of the Medical Sciences
https://www.readbyqxmd.com/read/28104016/-effect-of-the-obstructive-sleep-apnea-hypopnea-syndrome-treatment-on-blood-pressure-in-patients-with-resistant-hypertension
#3
H W Wang, H M Liu, Z Y Zheng, Y Z Jia, H R Li
Objective: To investigate the effect of the treatments for obstructive sleep apnea hypopnea syndrome (OSAHS) on the resistant hypertension (RH) of patients. Methods: Eighty patients with OSAHS and RH (blood pressure could not be controlled under 140/90 mmHg (1 mmHg=0.133 kPa) even with more than three kinds of antihypertensive drugs including diuretics) received surgery or continuous positive airway pressure (CPAP) treatment. The results of polysomnography monitoring, ambulatory blood pressure monitoring, and the dosage of antihypertensive medication were recorded before and six months after the treatment...
January 7, 2017: Zhonghua Er Bi Yan Hou Tou Jing Wai Ke za Zhi, Chinese Journal of Otorhinolaryngology Head and Neck Surgery
https://www.readbyqxmd.com/read/28070916/non-invasive-assessment-of-muscle-oxygenation-may-aid-in-optimising-transfusion-threshold-decisions-in-ambulatory-paediatric-patients
#4
K A Schenkman, D S Hawkins, W A Ciesielski, M Delaney, L S L Arakaki
OBJECTIVE: To assess the potential utility of a novel non-invasive muscle oxygen measurement to determine the presence of muscle hypoxia in patients with anaemia. BACKGROUND: Recent assessment of the risk/benefit ratio of blood transfusion has led to clinical strategies optimising transfusion decisions. These decisions are primarily based on haematocrit (Hct) but not oxygen delivery, the primary function of red blood cells (RBCs). We hypothesised that muscle oxygenation (MOx) would correlate with Hct in patients with anaemia and may be a physiologically relevant determinant of the transfusion threshold...
January 10, 2017: Transfusion Medicine
https://www.readbyqxmd.com/read/28066524/bioenergetic-differences-during-walking-and-running-in-transfemoral-amputee-runners-using-articulating-and-non-articulating-knee-prostheses
#5
M Jason Highsmith, Jason T Kahle, Rebecca M Miro, Larry J Mengelkoch
Transfemoral amputation (TFA) patients require considerably more energy to walk and run than non-amputees. The purpose of this study was to examine potential bioenergetic differences (oxygen uptake (VO2), heart rate (HR), and ratings of perceived exertion (RPE)) for TFA patients utilizing a conventional running prosthesis with an articulating knee mechanism versus a running prosthesis with a non-articulating knee joint. Four trained TFA runners (n = 4) were accommodated to and tested with both conditions. VO2 and HR were significantly lower (p ≤ 0...
September 2016: Technology and Innovation
https://www.readbyqxmd.com/read/28054897/thrombosis-of-the-right-internal-jugular-vein-is-not-a-contraindication-to-ambulatory-veno-venous-extracorporeal-membrane-oxygenation-with-a-bicaval-dual-lumen-single-cannula-system
#6
Anthony Kronfli, Chetan Pasrija, Aakash Shah, Mehrdad Ghoreishi, Jose P Garcia, Si M Pham, Pablo G Sanchez, Zachary N Kon
BACKGROUND: Veno-venous extracorporeal membrane oxygenation (VV-ECMO) is an ever-emerging method of managing respiratory failure in patients who are refractory to conventional mechanical ventilatory support. An increasingly common method of cannulation involves placement of a bicaval dual-lumen, single cannula via the right internal jugular (IJ) vein. Thrombus in this vein has been considered a contraindication for cannula placement. CASE REPORT: A 45-year-old Hispanic male presented with bleomycin-induced respiratory failure resulting in acute respiratory distress syndrome (ARDS)...
14, 2016: Heart Surgery Forum
https://www.readbyqxmd.com/read/28025374/effect-of-local-anesthetic-concentration-0-2-vs-0-1-ropivacaine-on-pulmonary-function-and-analgesia-after-ultrasound-guided-interscalene-brachial-plexus-block-a-randomized-controlled-study
#7
Andrew K Wong, Lauren Georgiades Keeney, Liting Chen, Rebekah Williams, Jiabin Liu, Nabil M Elkassabany
OBJECTIVE: This study aims to assess diaphragmatic excursion and measure pulmonary functions as measures of the degree to which the phrenic nerve is blocked after ISB with two different concentrations of ropivacaine: 0.2% and 0.1%. DESIGN: Randomized, double-blinded study. SETTING AND PATIENTS: Ambulatory surgical facility. SUBJECTS: Fifty patients undergoing shoulder arthroscopy for rotator cuff repair. METHODS: Patients were randomized to receive ultrasound-guided ISB with 20 mL of either 0...
December 2016: Pain Medicine: the Official Journal of the American Academy of Pain Medicine
https://www.readbyqxmd.com/read/27941119/ambulatory-treatment-of-fast-breathing-in-young-infants-aged-60-days-a-double-blind-randomized-placebo-controlled-equivalence-trial-in-low-income-settlements-of-karachi
#8
Shiyam S Tikmani, Amber A Muhammad, Yasir Shafiq, Saima Shah, Naresh Kumar, Imran Ahmed, Iqbal Azam, Omrana Pasha, Anita K M Zaidi
BACKGROUND: Integrated Management of Childhood Illness recommends that young infants with isolated fast breathing be referred to a hospital for antibiotic treatment, which is often impractical in resource-limited settings. Additionally, antibiotics may be unnecessary for physiologic tachypnea in otherwise well newborns. We tested the hypothesis that ambulatory treatment with oral amoxicillin for 7 days was equivalent (similarity margin of 3%) to placebo in young infants with isolated fast breathing in primary care settings where hospital referral is often unfeasible...
October 19, 2016: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/27914920/can-lowering-the-guidance-force-of-robot-assisted-gait-training-induce-a-sufficient-metabolic-demand-in-subacute-dependent-ambulatory-stroke-patients
#9
So Young Lee, Eun Young Han, Bo Ryun Kim, Min Ho Chun, Yong Ki Lee
OBJECTIVE: To assess the effects of guidance force (GF) and gait speed (GS) on cardiorespiratory responses and energy cost in subacute dependent ambulatory stroke patients. DESIGN: Cross sectional study. SETTING: University rehabilitation hospital. PARTICIPANTS: Ten subacute stroke patients (mean age: 64.50±19.20), who were dependent ambulators (functional ambulation category [FAC] ≤2). INTERVENTIONS: Patients participated in cardiorespiratory tests during robot-assisted gait training...
November 30, 2016: Archives of Physical Medicine and Rehabilitation
https://www.readbyqxmd.com/read/27861249/the-antihypertensive-effects-of-aerobic-versus-isometric-handgrip-resistance-exercise
#10
Garrett I Ash, Beth A Taylor, Paul D Thompson, Hayley V MacDonald, Lauren Lamberti, Ming-Hui Chen, Paulo Farinatti, William J Kraemer, Gregory A Panza, Amanda L Zaleski, Ved Deshpande, Kevin D Ballard, Mohammadtokir Mujtaba, C Michael White, Linda S Pescatello
BACKGROUND: Aerobic exercise reduces blood pressure (BP) on average 5-7 mmHg among those with hypertension; limited evidence suggests similar or even greater BP benefits may result from isometric handgrip (IHG) resistance exercise. METHOD: We conducted a randomized controlled trial investigating the antihypertensive effects of an acute bout of aerobic compared with IHG exercise in the same individuals. Middle-aged adults (n = 27) with prehypertension and obesity randomly completed three experiments: aerobic (60% peak oxygen uptake, 30 min); IHG (30% maximum voluntary contraction, 4 × 2 min bilateral); and nonexercise control...
February 2017: Journal of Hypertension
https://www.readbyqxmd.com/read/27855748/ambulatory-blood-pressure-monitoring-in-chinese-obstructive-sleep-apnea-patients
#11
Yan Ma, Shuchen Sun, Chung-Kang Peng, Yeming Fang, Robert J Thomas
STUDY OBJECTIVES: Nocturnal blood pressure (BP) dipping in patients with obstructive sleep apnea (OSA) has not yet been well investigated in Chinese patients, in whom the relationship of OSA and body mass index (BMI) is weaker than that in Caucasians. The aim of this study was to evaluate the BP profile, and the relationships between nocturnal BP and the severity of OSA, in Chinese patients. METHODS: Consecutive Chinese adult outpatients with suspected OSA had overnight polysomnography (PSG), office BP, and 24-h ambulatory BP monitoring (ABPM)...
November 14, 2016: Journal of Clinical Sleep Medicine: JCSM: Official Publication of the American Academy of Sleep Medicine
https://www.readbyqxmd.com/read/27853883/nutritional-status-and-its-effects-on-muscle-wasting-in-patients-with-chronic-heart-failure-insights-from-studies-investigating-co-morbidities-aggravating-heart-failure
#12
Masakazu Saitoh, Marcelo Rodrigues Dos Santos, Nicole Ebner, Amir Emami, Masaaki Konishi, Junichi Ishida, Miroslava Valentova, Anja Sandek, Wolfram Doehner, Stefan D Anker, Stephan von Haehling
BACKGROUND: Inadequate nutritional status has been linked to poor outcomes in patients with heart failure (HF). Skeletal muscle wasting affects about 20% of ambulatory patients with HF. The impact of nutritional intake and appetite on skeletal muscle wasting has not been investigated so far. We sought to investigate the impact of nutritional status on muscle wasting and mortality in ambulatory patients with HF. METHODS: We studied 130 ambulatory patients with HF who were recruited as a part of the Studies Investigating Co-morbidities Aggravating Heart Failure (SICA-HF) program...
December 2016: Wiener Klinische Wochenschrift
https://www.readbyqxmd.com/read/27832989/risk-stratification-for-the-development-of-respiratory-adverse-events-following-vascular-surgery-using-the-society%C3%A2-of-vascular-surgery-s-vascular-quality-initiative
#13
Elizabeth A Genovese, Larry Fish, Rabih A Chaer, Michel S Makaroun, Donald T Baril
OBJECTIVE: Postoperative respiratory adverse events (RAEs) are associated with high rates of morbidity and mortality in general surgery, however, little is known about these complications in the vascular surgery population, a frail subset with multiple comorbidities. The objective of this study was to describe the contemporary incidence of RAEs in vascular surgery patients, the risk factors for this complication, and the overall impact of RAEs on patient outcomes. METHODS: The Vascular Quality Initiative was queried (2003-2014) for patients who underwent endovascular abdominal aortic repair, open abdominal aortic aneurysm repair, thoracic endovascular aortic repair, suprainguinal bypass, or infrainguinal bypass...
November 7, 2016: Journal of Vascular Surgery
https://www.readbyqxmd.com/read/27811597/predictors-of-at-home-arterial-oxygen-desaturation-events-in-ambulatory-surgical-patients
#14
Chuck Biddle, Charles Elam, Laura Lahaye, Gordon Kerr, Laura Chubb, Brad Verhulst
OBJECTIVES: Little is known about the early recovery phase occurring at-home after anesthesia and surgery in ambulatory surgical patients. We studied quantitative oximetry and quality-of-life metrics in the first 48 hours after same-day orthopedic surgery examining the association between the recovery metrics and specific patient and procedural factors. METHODS: We used the STOP-Bang score to quantify patient risk for obstructive sleep apnea in 50 adult patients at 2 centers using continuous portable oximetry and patient journaling...
November 2, 2016: Journal of Patient Safety
https://www.readbyqxmd.com/read/27794080/automatic-oxygen-titration-during-walking-in-subjects-with-copd-a-randomized-crossover-controlled-study
#15
François Lellouche, Erwan L'Her, Pierre-Alexandre Bouchard, Cynthia Brouillard, François Maltais
BACKGROUND: Arterial oxygen desaturation frequently occurs in patients with COPD during daily activities at home. Oxygen flow is usually set at fixed and low rates for ambulatory patients. We evaluated an innovative closed-loop system (FreeO2) that automatically adjusts the oxygen flow to the patient's needs in subjects with COPD during walking followed by recovery time, such as during ambulatory conditions. METHODS: Patients with COPD who exhibited oxygen desaturation on exertion were included in the study...
November 2016: Respiratory Care
https://www.readbyqxmd.com/read/27792078/extracorporeal-lung-support
#16
Michael Salna, Matthew Bacchetta
PURPOSE OF REVIEW: The applications for extracorporeal membrane oxygenation for lung support are constantly evolving. This review highlights fundamental concepts in extracorporeal lung support and describes directions for future research. RECENT FINDINGS: Since the 1950s, extracorporeal lung support has experienced continuous advancements in circuit design and safety in acute respiratory distress syndrome, chronic obstructive pulmonary disease exacerbations, as a bridge to transplantation, intraoperative cardiopulmonary support, and for transportation to referral centers...
February 2017: Current Opinion in Anaesthesiology
https://www.readbyqxmd.com/read/27775912/a-robust-motion-artifact-detection-algorithm-for-accurate-detection-of-heart-rates-from-photoplethysmographic-signals-using-time-frequency-spectral-features
#17
Duy Dao, S M A Salehizadeh, Yeon Noj, Jo Woon Chong, Chae Cho, Dave Mcmanus, Chad E Darling, Yitzhak Mendelson, Ki H Chon
Motion and noise artifacts (MNAs) impose limits on the usability of the photoplethysmogram (PPG), particularly in the context of ambulatory monitoring. MNAs can distort PPG, causing erroneous estimation of physiological parameters such as heart rate (HR) and arterial oxygen saturation (SpO2). In this study we present a novel approach, "TifMA," based on using the Time-frequency spectrum of PPG to first detect the MNA-corrupted data and next discard the non-usable part of the corrupted data. The term "non-usable" refers to segments of PPG data from which the HR signal cannot be recovered accurately...
October 21, 2016: IEEE Journal of Biomedical and Health Informatics
https://www.readbyqxmd.com/read/27769826/effects-of-antiseptic-mouthwash-on-resting-metabolic-rate-a-randomized-double-blind-crossover-study
#18
Michaela L Sundqvist, Jon O Lundberg, Eddie Weitzberg
The nitrate-nitrite-nitric oxide pathway has emerged as a significant source of nitric oxide (NO) bioactivity. Dietary intake of inorganic nitrate has a number of cardiovascular effects as well as a decrease in oxygen cost during exercise and a reduction in resting metabolic rate (RMR). Oral bacteria have a key role in bioactivation of inorganic nitrate since they catalyse the conversion of salivary nitrate to the more reactive nitrite anion. Recent studies demonstrate that blood pressure increases with the use of an antiseptic mouthwash, indicating that endogenous, NO-synthase derived nitrate is recycled into nitrite and NO, sufficiently to modulate cardiovascular function...
December 30, 2016: Nitric Oxide: Biology and Chemistry
https://www.readbyqxmd.com/read/27753705/b-type-natriuretic-peptide-is-a-determinant-of-the-nocturnal-increase-in-blood-pressure-independently-of-arterial-hypertrophy-and-hypoxia
#19
Yasuharu Tabara, Michiya Igase, Tetsuro Miki, Yasumasa Ohyagi, Fumihiko Matsuda, Katsuhiko Kohara
OBJECTIVE: Loss of the nocturnal blood pressure (BP) drop is a risk factor for cardiovascular outcomes. However, clinical parameters that predispose to changes in nocturnal BP are currently uncertain. Given the possible involvement of salt sensitivity in nocturnal BP levels, we investigated a hypothesized association between plasma B-type natriuretic peptide (BNP) levels - a marker of body fluid retention - and nocturnal BP in a general population. METHODS: Study participants were 1020 general individuals...
October 7, 2016: Journal of Hypertension
https://www.readbyqxmd.com/read/27750131/exercise-training-effects-on-elderly-and-middle-age-patients-with-chronic-heart-failure-after-acute-decompensation-a-randomized-controlled-trial
#20
Domenico Acanfora, Pietro Scicchitano, Gerardo Casucci, Bernardo Lanzillo, Nicola Capuano, Giuseppe Furgi, Chiara Acanfora, Marialaura Longobardi, Raffaele Antonelli Incalzi, Giuseppe Piscosquito, Marco Matteo Ciccone
BACKGROUND: The aim of this study was to evaluate the effect of exercise training on cardiac function in heart failure (HF) patients recently suffering from acute decompensation. Radionuclide ambulatory ventricular function monitoring (VEST) was used to detect variations in cardiac hemodynamics during training period. METHODS: This was a monocentric, randomized, controlled trial. We enrolled 72 HF patients [left ventricle ejection fraction (LVEF) <40%] within two weeks after acute cardiogenic pulmonary edema: 40 in the elderly group, 32 in the middle-aged group...
December 15, 2016: International Journal of Cardiology
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