Vigileo SV, CO and SVV¶

Stroke volume, cardiac output and stroke volume variation.

Stub

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


Name in the dataset	`Vigileo/SV`
Type	numeric
Device	Vigileo
Stamped by	Recorder PC clock

Measurement space¶

Time side (as stamped): the true time lies between -45 s and -2 s from the stamp: the delay range plus the interval one value describes.

Time¶

From UTC to the stored time stamp¶

Derived from this signal's timing table; a written chain is still to come.

The clock path first (UTC to the clock that stamps or spaces the samples), then the signal's own path to its stored time. Each bar: the time shift or error the step introduces (pale) and what is left after the atlas's correction (solid), on a log scale; dashed when estimated or assumed.

UTC

The reference every chain starts from.

Recorder PC clock

sync assumed 3 ms – 900 ms · clock link, parameter

Windows time synchronisation to the hospital's time server every 8–24 h (assumed), drifting a few ppm in between. Not observable in the release: dates are shifted to 2100. No step of 0.5 s or more was found.

Recorder PC clock

transport measured 2 s – 25 s

Delay from the end of the interval a value describes to its stamp.

Stored time stamp

window measured 20 s

The width of the interval one value or sample stands for.

Timing¶

Against the working reference. Delay: from the end of the interval a value describes to its stamp. Interval: how wide that interval is.

Form	Delay	Interval	Clock domain	Status	Evidence
as stamped (default)	2 s – 25 s	20 s	Vigileo	measured	SVV vs arterial PPV: aligned in 25 of 343 cases,

Combine it with other signals in the synchronisation planner.

Value¶

Its value side is still to be described.

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.
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