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Friday, July 24, 2020 | History

2 edition of Oronasal distribution of respiratory airflow: (at rest and during submaximal exercise). found in the catalog.

Oronasal distribution of respiratory airflow: (at rest and during submaximal exercise).

Veli M. J. Niinimaa

Oronasal distribution of respiratory airflow: (at rest and during submaximal exercise).

by Veli M. J. Niinimaa

  • 272 Want to read
  • 38 Currently reading

Published .
Written in English


The Physical Object
Pagination[155 leaves]
Number of Pages155
ID Numbers
Open LibraryOL14575314M

Airflow was monitored with an oronasal thermistor and nasal cannula pressure transducer, and arterial oxyhemoglobin saturation (SpO 2) was assessed with finger pulse oximetry (LNOP DCI, Masimo, Irvine, CA). Time in bed was fixed at 8 h and initiated according to . Start studying Laboratory Exercises for Competency in Respiratory Care Glossary. Learn vocabulary, terms, and more with flashcards, games, and other study tools.

Atlas of sleep medicine Sudhansu Chokroverty, Robert Thomas, Meeta Bhatt This comprehensive atlas of tracings of polysomnographic studies covers the technical aspects of conducting studies, and includes the features of the various adult and pediatric sleep disorders. Because bioterrorism includes malicious exposure of populations to a naturally occurring or human-modified infectious agent, such agents are by definition pathogens or toxins. Moreover, the “bio” prefix is appropriate as they are generally bacterial, viral, or .

C) You cull the cow, respiratory disease is serious and can't be easily dealt with in a calf that young. D) You give supportive care by isolating the cow and making sure it is in a well ventilated, warm area and tell the farmer to call again if the symptoms persist for longer but also tell the farmer to look for signs in other cows. cessation or substantial reduction (i.e., >50%) in oronasal airflow of at least ten seconds, the respiratory event is defined as apnea or hypopnea, respectively.3 A moderate reduction in airflow (i.e., 3%) or brief awakening from sleep.


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Oronasal distribution of respiratory airflow: (at rest and during submaximal exercise) by Veli M. J. Niinimaa Download PDF EPUB FB2

The switching point from nasal to oronasal breathing during incrementally graded submaximal exercise was determined in 30 (14 M, 16 F) healthy adult volunteers. Nasal airflow was measured by a pneumotachograph attached to a nasal by: The oronasal distribution of respiratory airflow was determined during incrementally graded submaximal exercise in 30 (14 M, 16 F) healthy adult volunteers.

Nasal airflow. CFD has become a new tool for in-depth investigations of the human cardiovascular and respiratory system. Therefore, this new technique provides a better understanding of the respiratory airflow, enabling the reproduction of the complex geometries of the breathing : Concepción Paz, Eduardo Suárez, Miguel Concheiro, Marcos Conde.

The division of airflow has been studied by NllNlMAA et al. (), who showed that at the switching point from nasal to oronasal breathing, approximately 6 0 % of the airflow was nasal. As respiratory demand increases, the ratio changes in favor of oral breathing, but at high demand, the oral airway's share of flow is still only 6 0 %.Cited by: 7.

Measurements of Airway Dimensions and Calculation of Mass Transfer Characteristics of the Human Oral Passage K.-H. Cheng, K.-H.

Cheng. Department of Environmental Health Sciences, School of Hygiene and Public Health, Johns Hopkins University, Baltimore, MD Oronasal Distribution of Respiratory Flow,” Respir.

by: Abstract. the study respiration across objectively measured states of sleep began inwhen electroencephalographic (EEG) recordings were first used to monitor sleep during systematic studies of breathing (reviewed in ref. 63). Since that time it has become increasingly clear that the sleep/wake cycle exerts a significant impact on breathing and may fundamentally Oronasal distribution of respiratory airflow: book many Cited by: 9.

oronasal airflow – measured by nasal thermistor without respiratory effort; central apnea with duration equal or greater than 10 seconds was quantified. Obstructive ap-nea was defined as the presence of chest and abdominal wall movements in the absence of oronasal airflow mea-sured by the thermistor, of 5 seconds duration or longer.

The human nose is the most protruding part of the bears the nostrils and is the first organ of the respiratory is also the principal organ in the olfactory shape of the nose is determined by the nasal bones and the nasal cartilages, including the nasal septum which separates the nostrils and divides the nasal cavity into : sphenopalatine artery, greater palatine artery.

The relationship between sleep-disordered breathing (SDB) and nasal obstruction is unclear. In order to better understand, we performed an extensive computer-assisted review and analysis of the medical literature on this topic.

Data were grouped into reports of normal control subjects, patients with isolated nasal obstruction, and those with by: Table 4 shows the list of available literature on airflow and particle TD in the human respiratory tract.

In recent years, a number of realistic anatomical models have been developed for the extrathoracic [ 22, 23 ] and tracheobronchial [ 25, 26, 29 ] region of the lung. Ref. [ 19 ] developed an anatomical model of up to 15 generations from Cited by: 2.

Obstructive sleep apnea (OSA) is a common sleep disorder characterized by complete cessation of upper airflow during sleep, leading to repetitive episodes of desaturations and arousals. The symptoms include excessive daytime somnolence and are associated with a significant cardiovascular morbidity and mortality.

The prevalence of OSA is higher in men with an Author: I Jyothi, K Renuka Prasad, R Rajalakshmi, RC Satish Kumar, TalatamRamphanindra, TM Vijayakumar, Ilan. The results of this study are outlined below.

Lunn et al. (, ) studied respiratory disease and lung function of school children in four areas of differing pollution levels in Sheffield, England. At age 5, both chronic upper respiratory infections and lower respiratory tract illnesses were associated with residence in more polluted areas.

The majority of healthy adults are nasal breathers at resting tidal breathing or light exertion (Niinimaa et al., ; Hallani et al., ), but changes in the partitioning of the breathing cycle among nasal, oronasal, and oral components can impact the respiratory portion of heat exchange, as well as microclimate (i.e.

respirator dead space Cited by: Impedance plethysmography provides a way to measure respiratory activity by sensing the change of thoracic impedance caused by inspiration and expiration.

This measurement imposes little pressure on the body and uses the human body as the sensor, thereby reducing the need for adjustments as body position changes and making it suitable for long-term or ambulatory Cited by:   This figure shows an obstructive apnea.

An apnea is a respiratory event lasting ≥10 s, characterized by a decrement in airflow of ≥90% from the baseline in the oronasal thermocouple signal. Clear crescendo effort in the abdominal belt suggests : Q. Afifa Shamim-Uzzaman, Sukhmani Singh, Susmita Chowdhuri. The results show that: (1) physiologically realistic flow is obtained in the model, in terms of cyclic mass conservation and approximately uniform pressure distribution in the distal airways; (2) the predicted alveolar pressure is in good agreement with correlated experimental data; and (3) the use of reduced-order geometry modeling allows Cited by: 4.

From sleep apnea to respiratory conditions including COPD, ResMed has innovative solutions to help people live a healthier life. Rediscover restful sleep. Polysomnography is the golden standard method for diagnosing OSA. It records sleep-breathing pattern and oxygen saturation overnight via a minimum of 12 channels of physiological signal such as electroencephalogram, electrocardiogram, electromyogram, oronasal airflow, electroocculogram, respiratory effort, body position and oxygen : Sana Alami, Hakima Aghoutan, Samir Diouny, Farid El Quars, Farid Bourzgui.

Get this from a library. Clinical application of mechanical ventilation. [David W Chang] -- Clinical application of mechanical ventilation, fourth edition integrates fundamental concepts of respiratory physiology with the day-to-day duties of a respiratory care professional.

Utilizing the. MERS-CoV is the acronym for Middle East Respiratory Syndrome Coronavirus, the virus that causes MERS. When referring to the virus and not the illness, the Centers for Disease Control and Prevention (CDC) uses this acronym. When referring to the illness, the CDC uses MERS.

The virus was first reported in in Saudi Arabia. It is different from any other coronaviruses that. Noninvasive positive pressure ventilation has been suggested as a treatment for individuals with respiratory failure following extubation.

In a multi-center, randomized, controlled trial (n = ), Esteban et al () examined the effect of NPPV on mortality in this clinical setting.This chapter provides the committee’s review of the draft IRIS assessment that is relevant to formaldehyde toxicokinetics, carcinogenic modes of action, pharmacokinetic models, and biologically based dose-response (BBDR) models.

1 The committee comments on the Environmental Protection Agency (EPA) analysis of the fate of inhaled formaldehyde in the .Respiratory Health Effects Introduction The relationship between ETS exposure and a variety of nonmalignant respiratory tract health endpoints has been examined extensively in the epidemiologic and experimental literature.

Among children, the most common outcomes studied include asthma induction and exacerbation.