They evaluated six different situations regarding the PEEP, body position and intra-abdominal pressure.
The polysomnography consisted of continuous polygraphic recording (by Compumedic Sleep PTYLTD Abbotsford) from surface leads for electroencephalography, electrooculography, electromyography and ECG, and from noninvasive sensor for nasal airflow, tracheal sounds, body position, thoracic and abdominal respiratory efforts, and oxymyoglobin level.
A previously validated non-attended respiratory polygraphy was performed at patients' homes with a Somnea polygraph (Compumedics, Abbotsford, Australia) which records nasal airflow (nasal cannula), respiratory effort (chest and abdominal bands), snoring, body position and finger pulse oxymetry [11].
Look at their body position and general body language.
RPLG studies were conducted under nasal oxygen before NIV, using Philips Respironics Alice PDx® device, which provides the records of pulse oximetry with derived heart rate; snoring and nasal airflow with nasal pressure transducer and nasal thermistor; rib cage, abdominal motion and body position with abdominal and thoracic belts.
The IAP value is influenced by physiological (eg, body weight, body position, abdominal muscle activity), non-physiological (eg, surgical pneumoperitoneum) and multiple pathological situations (eg, abdominal trauma, pancreatitis, liver transplantation) [ 2, 4].
All patients will submit to standard level I PSG with monitoring using the following: EEG, electrooculography, submental electromyography, ECG, nasal cannula pressure transducer, thermistor, snoring sensor, thoracic and abdominal straps, body position sensor and pulse oximetry.
At polysomnographic analysis, electrocardiography, oronasal airflow measurement, duration of snoring periods, thoracic and abdominal respiratory movements, body position changes, and oxygen saturation (pulse oximeter) were measured and recorded simultaneously with the sleep stages by electroencephalography, electrooculography, and chin and tibial electromyograms.
Similar conclusions were reached by Madill and McLean [ 11], who examined the effect of body position on pelvic floor and abdominal (rectus abdominis, external oblique, internal obliques, and transversus abdominis) muscles activation in women aged 21 60 with no history of stress urinary incontinence.
Thoracic and abdominal respiratory effort bands, body position sensors, and pulse oximeter were also used.
