The campaign has taken a more aggressive tack against Mr. Obama and developed a sharper rapid-response apparatus, said Ed Rollins, a longtime Republican strategist.
In the present study, NO concentrations delivered to the patient were determined by sampling the endotracheal gas using a fast response chemiluminescence apparatus in order to accurately measure inspiratory NO concentration [ 9].
An accurate assessment of the mixing of NO in the different parts of the ventilatory circuit requires fast-response chemiluminescence apparatus [ 3, 23].
Using fast-response chemiluminescence apparatus, this bolus effect can be detected, and is indicated by a marked fluctuation in NO concentrations within the inspiratory limb.
This fluctuation, which can be detected only by fast-response chemiluminescence apparatus results from the passage of the bolus past the sampling site for the inspired gas.
If slow-response chemiluminescence apparatus is used, only mean tracheal concentration can be measured, which underestimates the actual inspired NO concentration delivered to the patient by about 50%.
In contrast, the continuous delivery of NO in the inspiratory limb leads to unpredictable and fluctuating concentrations of NO and must be considered as an unsafe mode of administration, unless fast-response chemiluminescence apparatus is used for monitoring.
This unpredictability of the dose received by the patient means that continuous administration can be utilized only if fast-response chemiluminescence apparatus is available for monitoring the NO concentrations.
