12 Ergebnisse
Pulse oximetry estimates oxygen saturation in the arterial blood by trans-illuminating a translucent tissue (usually a fingertip, or an ear lobe) with light-emitting diodes at 2 specific wavelengths. Absorption of light at these different wavelengths (660 nm, red, and 940 nm, infrared respectively)
The clinical presentation of COVID-19 disease is heterogenous, ranging from no symptoms to severe acute respiratory failure (ARF), which may have a poor prognosis. A severe hypoxemia is associated with preserved respiratory mechanical properties, in particular the pulmonary system compliance.
The
Sickle cell disease is an inherited blood disorder that affects approximately 100,000 people in the United States. People living with sickle cell disease have numerous complications that cause significant morbidity and mortality such as painful episodes of vasoocclusion, acute chest syndrome,
Specific Aims:
- To examine the relative efficacy of postural therapy (a 15-degree wedge mattress) on measures of chronic cardiometabolic stress in high altitude residents.
- To determine the tolerability of postural therapy.
Primary outcomes, at 4 and 8 weeks:
- Mean nocturnal oxyhemoglobin
Introduction
Acute respiratory distress syndrome (ARDS) is a clinical syndrome defined by the association of an acute onset of hypoxaemia and bilateral pulmonary infiltrates following a trigger insult; it is characterized by inflammation of the pulmonary tissue, with subsequent development of
Background and Importance:
Chronic respiratory diseases, which include asthma, COPD and pulmonary hypertension (PH), were responsible for 4.2 million deaths globally in 2008. COPD and asthma affect more than 500 million people worldwide and present an enormous health and economic
Background and Significance:
Impairment of exercise performance during hypoxemia due to altitude exposure or lung disease is caused primarily by reduced oxygen delivery to the exercising muscles, due to the reduction in arterial oxygen content. This reduction in arterial oxygen content is due to
In a paper recently published, Barr et al, supposed that pulmonary emphysema and bronchial obstruction were inversely related with ventricular telediastolic volume, with the ejection volume and the ejection fraction in patients with severe pulmonary disease. The mechanisms that are involved in the
Background Literature Review Obstructive sleep apnea syndrome (OSAS) is a sleep disorder characterized by recurrent, partial or complete episodes of upper airway obstruction, commonly associated with intermittent hypoxemia and sleep fragmentation.1 The best data available from international studies
The main contradiction in treatment for OSAHS complicated OHS is how to improve hypercapnia because of narrower difference between inspiratory positive airway pressure (IPAP) and expiratory positive airway pressure (EPAP), and meanwhile to eliminate apnea and popnea events which may easily occur at
Background Long-term oxygen therapy (LTOT) is the only component of the management of chronic obstructive pulmonary disease (COPD) that improves survival in patients with severe daytime hypoxemia (defined as an arterial oxygen pressure [PaO2] measured in stable state <= 55 mmHg or in the range 56-59
BACKGROUND:
In 1990, there was increased recognition that obstructive sleep apnea occurs commonly and may lead to serious adverse cardiopulmonary and psychoneurologic health effects. In subjects with numerous and prolonged apneas, nocturnal hypoxemia and disrupted sleep may lead to pulmonary