Delivered oxygen concentrations using low-flow and high-flow nasal cannulas
During the process, the CNA removed her nasal cannula
because the tubing was not long enough for her to move about.
On the day of testing the procedure was explained to the research subject, the nasal cannula
fitted, and the subject was encouraged to breathe in a steady pattern while recording took place.
Transtracheal is well accepted by patients and delivers oxygen more efficiently than a nasal cannula
Her vital signs after the second unit of polymerized hemoglobin were blood pressure, 134/94 mm Hg supine; heart rate, 98 beats per minute; respirations, 14 per minute; oxygen saturation, 92% on 2 L oxygen per nasal cannula
Flowrest is indicated to deliver heated, humidified breathing gases via nasal cannula
at flow rates from 15 to 35 liters per minute.
Although a nasal cannula
is a low flow oxygen system which means the precise FIO2 depends on the patient breathing pattern, with normal breathing a 2 LPM nasal cannula
suggests and FIO2 of 0.
An 89-year-old woman with a history of recurrent CHF secondary to hypertensive cardiomyopathy (three hospitalizations in 3 months, systolic and diastolic dysfunction by echocardiogram, ejection fraction of 40%, on home oxygen at 2 L/min), type 2 diabetes, and chronic renal insufficiency (glomerular filtration rate of 20 ml/min) was undergoing rehabilitation after hospitalization for pyelonephritis when her oxygen saturation dropped acutely from 92% to 60% on 6 L of oxygen by nasal cannula
She further stated that the oxygen administered via a nasal cannula
was "palliative," "not life sustaining," and that on several prior occasions the cannula became displaced.
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When evaluated in the emergency department, he was afebrile, with a blood pressure of 122/86 mm Hg, oxygen saturation of 100% on a nasal cannula
of 2 L/min, and a respiration rate of 16 breaths per minute.