نتایج جستجو برای: exhaled breathexhaled air
تعداد نتایج: 210015 فیلتر نتایج به سال:
There has been intense research into the role nitric oxide (NO) plays in physiological and pathological mechanisms and its clinical significance in respiratory medicine. Elevated levels of exhaled levels of exhaled NO in asthma and other inflammatory lung diseases lead to many studies examining NO as potential markers of airway inflammation, enabling repeated noninvasive and standardized monito...
The alcohol breath test is reviewed with a focus on gas exchange factors affecting its accuracy. The basis of the alcohol breath test is the assumption that alveolar air reaches the mouth during exhalation with no change in alcohol concentration. Recent investigations have shown that alcohol concentration is altered during its transit to the mouth. The exhaled alcohol concentration is modified ...
Nitric oxide (NO) plays an important role in resistance to Mycobacterium tuberculosis infection. Our aim was to determine whether inducible NO synthase (iNOS) expression and generation of reactive nitrogen intermediates (RNI) by alveolar macrophages (AM) are increased in patients infected with M. tuberculosis. NO levels in the exhaled air of 19 active pulmonary tuberculosis (TB) and 14 control ...
BACKGROUND Alzheimer's disease (AD) is diagnosed based upon medical history, neuropsychiatric examination, cerebrospinal fluid analysis, extensive laboratory analyses and cerebral imaging. Diagnosis is time consuming and labour intensive. Parkinson's disease (PD) is mainly diagnosed on clinical grounds. OBJECTIVE The primary aim of this study was to differentiate patients suffering from AD, P...
BACKGROUND Over the last few years, differential ion mobility spectroscopy (DMS) has become an important tool in medical research. There are attempts to find markers for specific diseases in exhaled air, using this technology as a non-invasive early diagnosis. OBJECTIVE In the present research, exhaled air from 78 patients with known diagnosis and 39 control persons were tested with a DMS sys...
Monitoring respiration rate, i. e. the rate air is inhaled and exhaled is an important indicator of an individual's health. Respiration rate is generally measured using sensors attached to the patient's body. These contact based methods have a number of limitations, for example the attached sensor can cause discomfort to the patients. A novel, automated, non-contact based method of re...
This study directly assessed whether there was a change in the level of exhaled ethane, which provides a non-invasive, quantitative, direct measure of n-3 lipid peroxidation, in the breath of patients with schizophrenia. Samples of alveolar air were obtained from 20 subjects with schizophrenia and 23 age- and sex-matched healthy control subjects. The air samples were analyzed for ethane using m...
Noninvasive positive-pressure ventilation (NPPV) is becoming increasingly used in patients with acute respiratory failure caused by a wide range of infectious aetiologies such as human-adapted avian influenza, aspergillosis and varicella [2–4], in order to avoid intubation or as a bridge to invasive mechanical ventilation. Substantial exposure to exhaled air occurs within a 0.5-m radius of pati...
Abstract The possibility using Raman spectroscopy in the analysis of samples for urease breath test to diagnose presence bacterium Helicobacter pylori has been demonstrated. scattering spectra air exhaled by a person were obtained, volume fractions 12 CO 2 and 13 exhalation determined.
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