BS 5724-3.12:1991

Committees responsible
Foreword
Section 1. General
1 Scope
2 Definitions
Section 2. Test and operating conditions
3 Test conditions
3.1 General
3.2 Accuracy of measurement
3.3 Test apparatus
3.4 General test procedures, except for the pre-test
      running described in 5.2
3.5 Reporting of test results in the ACCOMPANYING
      DOCUMENTS
Section 3. Declaration and measurement of parameters
4 Performance parameters
5 Basic test procedures
5.1 General
5.2 Pre-test running
5.3 Waveform performance test
5.4 Expiratory resistance test (under CMV)
5.5 Resistance test (under spontaneous ventilation
      conditions)
5.6 Volume performance test
5.7 I:E RATIO performance test
5.8 INSPIRATORY TIME performance test
5.9 Rebreathing test
5.10 Actions-of-controls test
5.11 MMV performance test
5.12 Synchronization test
5.13 Sequence of TRIGGERING sensitivity and delay tests
5.14 TRIGGERING-FREQUENCY range test
5.15 Over-maximum-FREQUENCY TRIGGERING waveform test
5.16 TRIGGERING waveform recording
6 LUNG VENTILATORS providing CMV
6.1 General
6.2 Waveform performance
6.3 Expiratory resistance
6.4 Volume performance
6.5 I:E RATIO performance
6.6 Rebreathing
6.7 Additional tests for LUNG VENTILATORS with
      mechanisms for adjusting end-expiratory pressure
6.8 Actions of controls
6.9 Additional tests for LUNG VENTILATORS with
      mechanisms for triggered CMV
7 LUNG VENTILATORS allowing spontaneous ventilation
      which is either unsupplemented or supplemented
      only by PRESSURE ASSISTANCE
7.1 General
7.2 Waveform performance
7.3 Resistance
7.4 Rebreathing
7.5 Additional tests for LUNG VENTILATORS with means
      for the production of CPAP or CNAP
7.6 Additional tests for LUNG VENTILATORS with
      adjustable mechanisms for assisting or hindering
      spontaneous ventilation
8 LUNG VENTILATORS providing IMV
8.1 General
8.2 Tests with simulated spontaneous breaths only
8.3 Tests with mandatory breaths only
8.4 Tests with both mandatory and spontaneous breaths
9 LUNG VENTILATORS providing MMV
9.1 General
9.2 Tests with simulated spontaneous breaths only
9.3 Tests with mandatory breaths only
9.4 Tests with both intermittent mandatory and
      spontaneous breaths or with pressure-assisted
      mandatory breaths
Appendices
A Respiratory data on normal children
B Modes of operation
C Bibliography
Tables
1 'High' and 'low' flows for resistance tests
2 Required accuracies
3 Values corresponding to unit distance in displays
      of waveform performance tests
4 Static characteristics of the rebreathing test
      apparatus
5 Settings of the LUNG VENTILATOR and the active
      part of the rebreathing test apparatus for the
      rebreathing tests
6 Typical presentation of results of an actions-of-
      controls test
7 Intervals corresponding to a given length of axis
      in plots of the spontaneous/mandatory interaction
      test
8 Settings of the test apparatus for a sequence of
      TRIGGERING sensitivity and delay tests
9 Conditions for individual TRIGGERING sensitivity
      and delay tests
10 Typical presentation of results of a sequence of
      TRIGGERING sensitivity and delay tests
11 Conditions for the waveform performance test for
      LUNG VENTILATORS providing CMV
12 Conditions for volume performance test in CMV
13 Conditions for I:E RATIO performance tests
14 Settings of the LUNG VENTILATOR for a sequence of
      TRIGGERING sensitivity and delay tests in
      triggered CMV and in SIMV
15 Settings of the LUNG VENTILATOR for the
      TRIGGERING-FREQUENCY range test in triggered CMV
16 Typical presentation of results of a TRIGGERING-
      FREQUENCY range test in CMV
17 Conditions for the waveform performance test for
      LUNG VENTILATORS allowing spontaneous ventilation
18 Typical presentation of results of a TRIGGERING-
      FREQUENCY range test in PRESSURE ASSISTANCE
19 Conditions for test 1 of waveform performance
      tests in IMV (DELIVERED VOLUME and INSPIRATORY
      TIME only) and MMV by IMV using only mandatory
      breaths
20 Conditions for volume performance tests in IMV
21 Conditions for INSPIRATORY TIME tests in IMV
22 Conditions for waveform performance tests with
      interaction of spontaneous breathing and MMV
23 Conditions for synchronization test recordings in
      SIMV
24 Conditions for waveform performance tests with
      interaction of spontaneous breathing and MMV
25 Conditions for MMV performance tests
26 Conditions for synchronization test recordings in
      MMV by SIMV
27 Respiratory data on normal children
NUMEROUS FIGURES

Includes test methods to be used to measure parameters.

This standard describes a method of declaring the performance parameters to be stated in documents accompanying a lung ventilator, together with test methods to be used to measure the parameters. It does not cover parameters resulting from recent developments such as jet and very high frequency ventilation and oscillation. Motive power units for lung ventilators together with resuscitators, respiratory therapy ventilators, external body ventilators, rocking apparatus and electrostimulators are outside the scope of this standard. The object of this standard is to permit the direct comparison of lung ventilators of different manufacture, and to standardize methods for the determination of compliance with the manufacturer\'s declared performance. NOTE The titles of the publications referred to in this standard are listed on the inside back cover.