EV1000¶

Edwards EV1000 haemodynamic platform.

Stub

Imported from the time-source table; the full page is still to be written.


Type	monitor

Device documentation¶

VitalDB connection guide: Edwards EV-1000

Variables¶

Variable	Type	Stamped by	Spaced by
EV1000 mean arterial pressure	numeric	Recorder PC clock	—

Scale factors and resolution¶

Numerics. Stored as floats with gain 1. Grid is the coarsest decimal step holding 99% of records; the share on the next coarser grid shows heaping (by chance about 1/2, 1/5 or 1/10).

Track	Unit	Stored as	Interval	Recordings	Grid	Share one step coarser	Rounding	Observed range	Note
`ART_MBP`	mmHg	float32	2 s	599	1	0.2	—	22 to 232	—
`CI`	L/min/m2	float32	2 s	599	0.1	0.2	—	0 to 20	—
`CO`	L/min	float32	2 s	599	0.1	0.2	—	1 to 20	—
`SV`	ml/beat	float32	2 s	599	1	0.2	—	1 to 233	—
`SVI`	ml/beat/m2	float32	2 s	599	1	0.2	—	1 to 200	—
`SVV`	%	float32	2 s	599	0.1	0.2	—	0 to 75.6	—
`SVR`	dn-s/cm5	float32	2 s	255	1	0.2	—	10 to 4970	—
`SVRI`	dn-s-m2/cm5	float32	2 s	255	1	0.2	—	15 to 9876	—
`CVP`	mmHg	float32	2 s	244	1	0.2	—	0 to 50	—

Studies¶

Study	Date	Status	Summary
Value resolution of every signal	2026-10-19	draft	How finely every waveform and numeric track in the release records its values. The SNUADC waveforms are 10-bit codes, though VitalRecorder's documentation describes the SNUADC as 12-bit; Primus waveforms use about 10 bits of 12; BIS EEG is a 16-bit grid of 0.05 µV. Numerics are 32-bit floats on decimal grids of 1, 0.1, 0.01 or 0.001, one per track; settings sit on coarser grids of 10 or 100.
Closing loops in the timing graph	2026-10-13	current	Where two independent routes reach the same clock, the offsets around the loop must sum to zero. Three measured loops close within their noise; the BIS loop closes up to a constant latency; the proposed EMR loop is not a loop at all.
Rare devices against SNUADC	2026-10-13	current	CardioQ, EV1000, Vigileo and Vigilance each get a link to the SNUADC timeline: beat matching for the CardioQ, mean arterial pressure alignment for the EV1000 and Vigileo, and a long-window fit for Vigilance's averaged heart rate.

Tags: stub