keyword
MENU ▼
Read by QxMD icon Read
search

Deep breathing

keyword
https://www.readbyqxmd.com/read/29782141/in-situ-assembly-of-well-dispersed-ag-nanoparticles-throughout-electrospun-alginate-nanofibers-for-monitoring-human-breath-smart-fabrics
#1
Jun Zhang, Xiao-Xiong Wang, Bin Zhang, Seeram Ramakrishna, Miao Yu, Jian-Wei Ma, Yun-Ze Long
Alginate nanofibers assembled with sliver nanoparticles throughout the whole nanofiber were fabricated by three steps including electrospinning of Na-alginate nanofibers, ion exchange between the sodium and silver ions, and in situ reduction of silver nanoparticles. The content, distribution and size of the nanoparticles are controllable by tuning reaction conditions. Ag/alginate nanofibers exhibit good humidity sensitivity in a wide humidity range from ambient RH (20%) to 85% RH. Interestingly, these humidity sensors can be attached to a 3M-9001V mask for monitoring human breath during exercise and emotion changes, and this smart exhibits accurate and continuous human-breath tracking no matter how fast or slow as well as how deep or shallow...
May 21, 2018: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29773686/drivers-of-the-dive-response-in-pinnipeds-apnea-submergence-or-temperature
#2
Jeppe Kaczmarek, Colleen Reichmuth, Birgitte I McDonald, Jakob H Kristensen, Josefin Larson, Fredrik Johansson, Jenna L Sullivan, Peter T Madsen
Long and deep dives in marine mammals are enabled by high mass-specific oxygen stores and the dive response (DR), which reduces oxygen consumption in concert with increased peripheral vasoconstriction and a lowered heart rate during dives. Diving heart rates of pinnipeds are highly variable and modulated by many factors, such as breath holding (apnea), pressure, swimming activity, temperature, and even cognitive control. However, the individual effects of these factors on diving heart rate are poorly understood due to the difficulty of parsing their relative contributions in diving pinnipeds...
May 17, 2018: Journal of Experimental Biology
https://www.readbyqxmd.com/read/29773446/effects-of-preparatory-coaching-and-home-practice-for-deep-inspiration-breath-hold-on-cardiac-dose-for-left-breast-radiation-therapy
#3
A Kim, A M Kalet, N Cao, D S Hippe, L C Fang, L Young, J Meyer, E V Lang, N A Mayr
AIMS: Deep inspiration breath hold (DIBH) reduces cardiac radiation exposure by creating cardiac-chest wall separation in breast cancer radiotherapy. DIBH requires sustaining chest wall expansion for up to 40 s and involves complex co-ordination of thoraco-abdominal muscles, which may not be intuitive to patients. We investigated the effect of in-advance preparatory DIBH coaching and home practice on cardiac doses. MATERIALS AND METHODS: Successive patients from 1 February 2015 to 31 December 2016 with left-sided breast cancer who underwent tangential field radiotherapy utilising the DIBH technique were included...
May 14, 2018: Clinical Oncology: a Journal of the Royal College of Radiologists
https://www.readbyqxmd.com/read/29761316/impact-of-visual-feedback-on-dose-volume-histograms-for-organs-at-risk-in-postoperative-radiotherapy-with-deep-inspiration-breath-holding-for-patients-treated-with-breast-conserving-therapy-a-planning-study
#4
Keiko Nemoto Murofushi, Masaru Nakajima, Tetsuya Tomita, Minako Sumi, Yasuo Yoshioka, Masahiko Oguchi, Hideyuki Sakurai
BACKGROUND: We evaluated the effectiveness of visual feedback (VF) on radiotherapy with deep inspiration breath-holding (DIBH), and reviewed the dose for organs at risk (OARs). METHODS: Respiratory motions during DIBH for 15 s were monitored during planning computed tomography (CT)-scanning and simulation for 40 patients after breast-conserving surgery from June 2007 to February 2008. For 22 of 40 patients, a goggle-type liquid crystal display monitor was used for VF...
May 14, 2018: Breast Cancer: the Journal of the Japanese Breast Cancer Society
https://www.readbyqxmd.com/read/29755846/repeatability-of-fdg-pet-ct-metrics-assessed-in-free-breathing-and-deep-inspiration-breath-hold-in-lung-cancer-patients
#5
Lotte Nygård, Marianne C Aznar, Barbara M Fischer, Gitte F Persson, Charlotte B Christensen, Flemming L Andersen, Mirjana Josipovic, Seppo W Langer, Andreas Kjær, Ivan R Vogelius, Søren M Bentzen
We measured the repeatability of FDG PET/CT uptake metrics when acquiring scans in free breathing (FB) conditions compared with deep inspiration breath hold (DIBH) for locally advanced lung cancer. Twenty patients were enrolled in this prospective study. Two FDG PET/CT scans per patient were conducted few days apart and in two breathing conditions (FB and DIBH). This resulted in four scans per patient. Up to four FDG PET avid lesions per patient were contoured. The following FDG metrics were measured in all lesions and in all four scans: Standardized uptake value (SUV)peak , SUVmax , SUVmean , metabolic tumor volume (MTV) and total lesion glycolysis (TLG), based on an isocontur of 50% of SUVmax ...
2018: American Journal of Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/29750877/respiratory-induced-hemodynamic-changes-measured-by-whole-body-multichannel-impedance-plethysmography
#6
P Langer, P Jurák, V Vondra, J Halámek, M Mešťaník, I Tonhajzerová, I Viščor, L Soukup, M Matejkova, E Závodná, P Leinveber
The cardiovascular system is described by parameters including blood flow, blood distribution, blood pressure, heart rate and pulse wave velocity. Dynamic changes and mutual interactions of these parameters are important for understanding the physiological mechanisms in the cardiovascular system. The main objective of this study is to introduce a new technique based on parallel continuous bioimpedance measurements on different parts of the body along with continuous blood pressure, ECG and heart sound measurement during deep and spontaneous breathing to describe interactions of cardiovascular parameters...
May 10, 2018: Physiological Research
https://www.readbyqxmd.com/read/29750662/supplemental-carbon-dioxide-stabilizes-the-upper-airway-in-volunteers-anesthetized-with-propofol
#7
Katarina Jennifer Ruscic, Janne Bøgh Stokholm, Johann Patlak, Hao Deng, Jeroen Cedric Peter Simons, Timothy Houle, Jürgen Peters, Matthias Eikermann
BACKGROUND: Propofol impairs upper airway dilator muscle tone and increases upper airway collapsibility. Preclinical studies show that carbon dioxide decreases propofol-mediated respiratory depression. We studied whether elevation of end-tidal carbon dioxide (PETCO2) via carbon dioxide insufflation reverses the airway collapsibility (primary hypothesis) and impaired genioglossus muscle electromyogram that accompany propofol anesthesia. METHODS: We present a prespecified, secondary analysis of previously published experiments in 12 volunteers breathing via a high-flow respiratory circuit used to control upper airway pressure under propofol anesthesia at two levels, with the deep level titrated to suppression of motor response...
May 10, 2018: Anesthesiology
https://www.readbyqxmd.com/read/29750133/use-of-indirect-target-gating-in-magnetic-resonance-guided-liver-stereotactic-body-radiotherapy-case-report-of-an-oligometastatic-patient
#8
Luca Boldrini, Francesco Cellini, Stefania Manfrida, Giuditta Chiloiro, Stefania Teodoli, Davide Cusumano, Bruno Fionda, Gian Carlo Mattiucci, Anna Maria De Gaetano, Luigi Azario, Vincenzo Valentini
The case of a 73-year-old woman affected by anal canal cancer with concomitant liver metastases is presented here. The patient was addressed to stereotactic body radiotherapy (SBRT) on two hepatic secondary lesions after the first radiochemotherapy treatment of the primary tumor. A Tri-60-Co magnetic resonance hybrid radiotherapy unit was used for SBRT treatment delivery. Both liver lesions were not clearly visible on the setup magnetic resonance imaging (MRI) due to their limited dimensions (maximum diameter 13 mm); however, the presence of two cysts adjacent to the metastases allowed the use of an indirect target gating approach...
March 9, 2018: Curēus
https://www.readbyqxmd.com/read/29746482/implementation-of-a-voluntary-deep-inspiration-breath-hold-technique-vdibh-using-brainlab-exactrac-infrared-optical-tracking-system
#9
Edy Ippolito, Michele Fiore, Alessia Di Donato, Sonia Silipigni, Carla Rinaldi, Patrizia Cornacchione, Erminia Infusino, Cristina Di Venanzio, Carlo Greco, Lucio Trodella, Sara Ramella, Rolando Maria D'Angelillo
BACKGROUND: Voluntary deep inspiration breath hold technique (vDIBH) is considered as the key to achieving the widest cardiac sparing in whole breast irradiation. Several techniques have been implemented to achieve a reproducible, fast and friendly treatment. The aim of the present study is to implement vDIBH using the ExacTrac (BrainLAB AG, Germany) monitoring system. METHODS: Women with left-sided breast cancer, younger than 50 years or with cardiac disease, underwent whole breast RT with vDIBH using the ExacTrac (BrainLAB AG, Germany) monitoring system...
2018: PloS One
https://www.readbyqxmd.com/read/29740971/target-position-reproducibility-in-left-breast-irradiation-with-deep-inspiration-breath-hold-using-multiple-optical-surface-control-points
#10
Aurora Fassi, Giovanni B Ivaldi, Paola Tabarelli de Fatis, Marco Liotta, Ilaria Meaglia, Patrizia Porcu, Lea Regolo, Marco Riboldi, Guido Baroni
The aim of this study was to investigate the use of 3D optical localization of multiple surface control points for deep inspiration breath-hold (DIBH) guidance in left-breast radiotherapy treatments. Ten left-breast cancer patients underwent whole-breast DIBH radiotherapy controlled by the Real-time Position Management (RPM) system. The reproducibility of the tumor bed (i.e., target) was assessed by the position of implanted clips, acquired through in-room kV imaging. Six to eight passive fiducials were positioned on the patients' thoraco-abdominal surface and localized intrafractionally by means of an infrared 3D optical tracking system...
May 8, 2018: Journal of Applied Clinical Medical Physics
https://www.readbyqxmd.com/read/29727028/effects-of-depth-of-neuromuscular-block-on-surgical-conditions-during-laparoscopic-colorectal-surgery-a-randomised-controlled-trial
#11
B W Koo, A Y Oh, H S Na, H J Lee, S B Kang, D W Kim, K S Seo
There have been few objective evaluations of the effects of deep neuromuscular blockade on intra-operative conditions. In this prospective randomised controlled study, we evaluated the effects of deep neuromuscular block on surgical conditions during laparoscopic colorectal surgery. Patients were randomly allocated using a computer-generated randomisation code to either moderate (train-of-four count 1-2 maintained and antagonised with neostigmine) or deep (post-tetanic count 1-2 maintained and reversed with sugammadex) levels of neuromuscular blockade...
May 4, 2018: Anaesthesia
https://www.readbyqxmd.com/read/29720096/celiac-crisis-a-rare-and-profound-presentation-of-celiac-disease-a-case-report
#12
Elizabeth Ann Forrest, Mark Wong, Srinivasa Nama, Siddharth Sharma
BACKGROUND: Celiac crisis is a life-threatening manifestation of celiac disease and is rare in adults, with only a handful of cases documented worldwide and mostly in children. CASE PRESENTATION: A profoundly emaciated 43-year-old female presented with profuse diarrhoea, shortness of breath, left leg swelling with ulceration and immobility (Body Mass Index (BMI) = 14.7 kg/m2 ). The patient had normal anion-gap metabolic acidosis (pH = 7.16) with persisting hypokalemia, hyponatremia, hypomagnesemia and hypophosphatemia...
May 2, 2018: BMC Gastroenterology
https://www.readbyqxmd.com/read/29706718/comparison-of-two-instructions-for-deep-breathing-exercise-non-specific-and-diaphragmatic-breathing
#13
Masami Yokogawa, Tomoyo Kurebayashi, Toshikazu Ichimura, Manabu Nishino, Hiroichi Miaki, Takao Nakagawa
[Purpose] Breathing exercises are frequently prescribed to reduce pulmonary complications after abdominal and thoracic surgery. Appropriate instructions ensuring the integrity of the self-exercise are important. This study compared the effects of two instructions, focusing on non-specific breathing (NB) and diaphragmatic breathing (DB) patterns, respectively, on the ventilatory efficiency and work of breathing. [Subjects and Methods] The participants were healthy men (n=15) and women (n=15). Ventilatory parameters, heart rate, and autonomic nervous system activity were measured during natural and deep breathing phases performed under the two instructions (NB and DB), with the deep breathing phase following the natural breathing phase...
April 2018: Journal of Physical Therapy Science
https://www.readbyqxmd.com/read/29706695/effects-of-deep-breathing-on-internal-oblique-and-multifidus-muscle-activity-in-three-sitting-postures
#14
Min-Joo Ko, Eun-Joo Jung, Moon-Hwan Kim, Jae-Seop Oh
[Purpose] This study was to investigate differences in the level of activity of the external oblique (EO), internal oblique (IO), and multifidus (MF) muscles with deep breathing in three sitting postures. [Subjects and Methods] Sixteen healthy women were recruited. The muscle activity (EO, IO, MF) of all subjects was measured in three sitting postures (slumped, thoracic upright, and lumbo-pelvic upright sitting postures) using surface electromyography. The activity of the same muscles was then remeasured in the three sitting postures during deep breathing...
April 2018: Journal of Physical Therapy Science
https://www.readbyqxmd.com/read/29703035/radiological-features-of-azygos-and-hemiazygos-continuation-of-inferior-vena-cava-a-case-report
#15
Yin Liu, Dan Guo, Jie Li, Xuebin Zhang, Jian He, Mei Huang, Jinghong Dai, Hourong Cai
RATIONALE: Azygos and hemiazygos continuation of the inferior vena cava (IVC) is uncommon. It is rare especially when it is not associated with congenital heart disease or deep venous thrombosis. PATIENT CONCERNS: We report an interesting case of an interstitial lung disease with an interrupted IVC with azygous and hemiazygos continuation. A 67-year-old man suffered from cough and shortness of breath. DIAGNOSES: Computed tomography revealed absence of the hepatic segment of the IVC with azygos and hemiazygos continuation...
April 2018: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29702071/incentive-spirometry-after-lung-resection-a-randomized-controlled-trial
#16
Peter Ra Malik, Christine Fahim, Jordyn Vernon, Priya Thomas, Colin Schieman, Christian J Finley, John Agzarian, Yaron Shargall, Forough Farrokhyar, Wael C Hanna
BACKGROUND: Incentive spirometry (IS) is thought to reduce the incidence of postoperative pulmonary complications (PPC) after lung resection. We sought to determine whether the addition of IS to routine physiotherapy following lung resection results in a lower rate of PPC, as compared to physiotherapy alone. METHODS: A single-blind prospective randomized controlled trial was conducted in adults undergoing lung resection. Individuals with previous lung surgery or home oxygen were excluded...
April 24, 2018: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/29699893/resource-requirements-and-reduction-in-cardiac-mortality-from-deep-inspiration-breath-hold-dibh-radiation-therapy-for-left-sided-breast-cancer-patients-a-prospective-service-development-analysis
#17
Sanjoy Chatterjee, Santam Chakraborty, Arunsingh Moses, Chandran Nallathambi, Anurupa Mahata, Samar Mandal, Rimpa Basu Achari, Indranil Mallick, Raj Kumar Shrimali, Tapesh Bhattacharyya, Sanjit Agrawal, Joydeep Ghosh, Rosina Ahmed
INTRODUCTION: Use of deep inspiration breath hold (DIBH) radiation therapy may reduce long-term cardiac mortality. The resource and time commitments associated with DIBH are impediments to its widespread adoption. We report the dosimetric benefits, workforce requirements, and potential reduction in cardiac mortality when DIBH is used for left-sided breast cancers. METHODS AND MATERIALS: Data regarding the time consumed for planning and treating 50 patients with left-sided breast cancer with DIBH and 20 patients treated with free breathing (FB) radiation therapy were compiled prospectively for all personnel (regarding person-hours [PH])...
March 21, 2018: Practical Radiation Oncology
https://www.readbyqxmd.com/read/29693021/predictors-of-cardiovascular-autonomic-neuropathy-onset-and-progression-in-a-cohort-of-type-1-diabetic-patients
#18
M Matta, A Pavy-Le Traon, S Perez-Lloret, C Laporte, I Berdugo, N Nasr, H Hanaire, J M Senard
Aim: The prevalence of cardiovascular autonomic neuropathy (CAN) in diabetes mellitus is well documented. However, the rate and predictors of both the development and progression of CAN have been less studied. Hereby, we assessed the rate and the major risk factors for CAN initiation and progression in a cohort of type 1 diabetic patients followed over a three-year period. Methods: 175 type 1 diabetic patients (mean age: 50 ± 11 years; female/male: 76/99) with positive bedside screening for CAN were included and underwent 2 standardized autonomic testings using 4 standardized tests (deep breathing, Valsalva maneuver, 30/15 ratio, and changes in blood pressure during standing), separated by 3 ± 1 years...
2018: Journal of Diabetes Research
https://www.readbyqxmd.com/read/29692886/what-are-the-optimum-components-in-a-care-bundle-aimed-at-reducing-post-operative-pulmonary-complications-in-high-risk-patients
#19
Sophie V Griffiths, Daniel H Conway, Michael Sander, Ib Jammer, Michael P W Grocott, Ben C Creagh-Brown
Background: Post-operative pulmonary complications (POPC) are common, predictable and associated with increased morbidity and mortality, independent of pre-operative risk. Interventions to reduce the incidence of POPC have been studied individually, but the use of a care bundle has not been widely investigated. The purpose of our work was to use Delphi consensus methodology and an independently chosen expert panel to formulate a care bundle for patients identified as being at high of POPC, as preparation towards an evaluation of its effectiveness at reducing POPC...
2018: Perioperative Medicine
https://www.readbyqxmd.com/read/29687909/breath-hold-diving
#20
John R Fitz-Clarke
Breath-hold diving is practiced by recreational divers, seafood divers, military divers, and competitive athletes. It involves highly integrated physiology and extreme responses. This article reviews human breath-hold diving physiology beginning with an historical overview followed by a summary of foundational research and a survey of some contemporary issues. Immersion and cardiovascular adjustments promote a blood shift into the heart and chest vasculature. Autonomic responses include diving bradycardia, peripheral vasoconstriction, and splenic contraction, which help conserve oxygen...
March 25, 2018: Comprehensive Physiology
keyword
keyword
37645
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"