+++
date = "2015-09-01T19:34:46-04:00"
title = "The inputevents_mv table"
linktitle = "INPUTEVENTS_MV"
weight = 25
toc = "true"

+++

Table source: Metavision ICU databases.

Table purpose: Input data for patients.

Number of rows: 3,618,991

Links to:

• PATIENTS on SUBJECT_ID
• ADMISSIONS on HADM_ID
• ICUSTAYS on ICUSTAY_ID
• D_ITEMS on ITEMID
• CAREGIVERS on CGID

A high level description of the data is available here.

Important considerations

• A bolus will be listed as ending one minute after it started, i.e. ENDTIME = STARTTIME + 1 minute

Table columns

Detailed Description

SUBJECT_ID, HADM_ID, ICUSTAY_ID

Identifiers which specify the patient: SUBJECT_ID is unique to a patient, HADM_ID is unique to a patient hospital stay and ICUSTAY_ID is unique to a patient ICU stay.

STARTTIME, ENDTIME

STARTTIME and ENDTIME record the start and end time of an input/output event.

ITEMID

Identifier for a single measurement type in the database. Each row associated with one ITEMID which corresponds to an instantiation of the same measurement (e.g. norepinephrine).
MetaVision ITEMID values are all above 220000. Since this data only contains data from MetaVision, it only contains ITEMID above 220000 (see here for details about MetaVision)

AMOUNT, AMOUNTUOM

AMOUNT and AMOUNTUOM list the amount of a drug or substance administered to the patient either between the STARTTIME and ENDTIME.

RATE, RATEUOM

RATE and RATEUOM list the rate at which the drug or substance was administered to the patient either between the STARTTIME and ENDTIME.

STORETIME

STORETIME records the time at which an observation was manually input or manually validated by a member of the clinical staff.

CGID

CGID is the identifier for the caregiver who validated the given measurement.

ORDERID, LINKORDERID

ORDERID links multiple items contained in the same solution together. For example, when a solution of noradrenaline and normal saline is administered both noradrenaline and normal saline occur on distinct rows but will have the same ORDERID.

LINKORDERID links the same order across multiple instantiations: for example, if the rate of delivery for the solution with noradrenaline and normal saline is changed, two new rows which share the same new ORDERID will be generated, but the LINKORDERID will be the same.

ORDERCATEGORYNAME, SECONDARYORDERCATEGORYNAME, ORDERCOMPONENTTYPEDESCRIPTION, ORDERCATEGORYDESCRIPTION

These columns provide higher level information about the order the medication/solution is a part of. Categories represent the type of administration, while the ORDERCOMPONENTTYPEDESCRIPTION describes the role of the substance in the solution (i.e. main order parameter, additive, or mixed solution)

PATIENTWEIGHT

The patient weight in kilograms.

TOTALAMOUNT, TOTALAMOUNTUOM

Intravenous administrations are usually given by hanging a bag of fluid at the bedside for continuous infusion over a certain period of time. These columns list the total amount of the fluid in the bag containing the solution.

STATUSDESCRIPTION

STATUSDESCRIPTION states the ultimate status of the item, or more specifically, row. It is used to indicate why the delivery of the compound has ended. There are only six possible statuses:

• Changed - The current delivery has ended as some aspect of it has changed (most frequently, the rate has been changed)
• Paused - The current delivery has been paused
• FinishedRunning - The delivery of the item has finished (most frequently, the bag containing the compound is empty)
• Stopped - The delivery of the item been terminated by the caregiver
• Rewritten - Incorrect information was input, and so the information in this row was rewritten (these rows are primarily useful for auditing purposes - the rates/amounts described were not delivered and so should not be used if determining what compounds a patient has received)
• Flushed - A line was flushed.

ISOPENBAG

Whether the order was from an open bag.

CONTINUEINNEXTDEPT

If the order ended on patient transfer, this field indicates if it continued into the next department (e.g. a floor).

CANCELREASON

If the order was canceled, this column provides some explanation.

COMMENTS_STATUS, COMMENTS_TITLE, COMMENTS_DATE

Specifies if the order was edited or canceled, and if so, the date and job title of the care giver who canceled or edited it.

ORIGINALAMOUNT

Drugs are usually mixed within a solution and delivered continuously from the same bag. This column represents the amount of the drug contained in the bag at STARTTIME. For the first infusion of a new bag, ORIGINALAMOUNT = TOTALAMOUNT. Later on, if the rate is changed, then the amount of the drug in the bag will be lower (as some has been administered to the patient). As a result, ORIGINALAMOUNT < TOTALAMOUNT, and ORIGINALAMOUNT will be the amount of drug leftover in the bag at that STARTTIME.

ORIGINALRATE

This is the rate that was input by the care provider. Note that this may differ from RATE because of various reasons: ORIGINALRATE was the original planned rate, while the RATE column will be the true rate delivered. For example, if a a bag is about to run out and the care giver decides to push the rest of the fluid, then RATE > ORIGINALRATE.
However, these two columns are usually the same, but have minor non-clinically significant differences due to rounding error.