The second condition can also be written in order to keep only strictly positive or strictly negative static compliances
, when their sign is well known from physical considerations.
VL = volume loading, MABP = mean arterial blood pressure, HR = heart rate, Ppeak = airway peak pressure, Pplat = airway plateau pressure, Cstat = total static compliance
of the respiratory system, ETC[.sub.2] = end-tidal C[O.sub.2], SV-TOE = stroke volume measured using transoesophageal echocardiography, PPV = pulse pressure variation, SVV = stroke volume variation.
Injured 21.0 22.9 Ventilator Test lung Meas [DELTA]V (ml) SV 300 Normal 5.9 Injured 11.1 840 ventilator Normal 6.9 Injured 13.8 Evita 4 Neoflow Normal 7.6 Injured 14.7 [DELTA]P=the difference between Ppl and PEEP (Ppl minus PEEP), Est [DELTA]V=estimated delta V, the products of static compliance
of the breathing circuit (1.09 ml/cm[H.sub.2]O) and delta P; Meas [DELTA]V=measured delta V, the difference between [V.sub.TV] and Act [V.sub.T] ([V.sub.TV] minus actual VT).
Manual hyperinflation is a technique that provides a tidal volume greater than the baseline volume and produces a turbulent flow that brings benefits such as improvement of static compliance
of the respiratory system, increased oxygenation, mobilisation of secretions, and recruitment of collapsed areas of lung (McCarren and Chow 1996, Maa et al 2005).
Manufacturer: Audio-Technica U.S., Inc., 1221 Commerce Drive, Stow, Ohio 44224; 330-686-2600; www.audio-technica.com Standard Mount: 1/2" centers Vector-Aligned Moving Magnet Output: 4 mV at 1 kHz, 5 cm/sec Channel balance at 1 kHz: 0.8 dB Channel separation at 1 kHz: 27 dB Frequency response: 20 Hz-20 kHz Dynamic Compliance (x 10-6 cm/dyne, 100 Hz): 10.0/mN Static Compliance
: 40x10E-6 cm/dyne Diamond tip type: MicroLine[TM] Stylus construction: nude square shank Cantilever: tapered alloy tube Tracking force: 0.75-1.75 Gr Internal inductance: 490 mil Coil Impedance: 3200 ohms (1 kHz) Recommended load capacitance: 100-200 pF Recommended load resistance: 47k ohm Cartridge weight: 6.5 grams List Price: $219