pyxis table

The pyxis table

The pyxis table provides information for medicine dispensations made via the Pyxis system.

Note that as the same medication may have multiple gsn values, each row does not necessarily indicate a unique dispensation. The med_rn column allows for subselecting to individual dispensations.

Table source: Emergency department information system.

Table purpose: Track medicine administrations.

Number of rows: 1,586,053

Links to:

• edstays on stay_id

Table columns

Name	Postgres data type
subject_id	INTEGER NOT NULL
stay_id	INTEGER NOT NULL
charttime	TIMESTAMP(0)
med_rn	SMALLINT NOT NULL
name	VARCHAR(255)
gsn_rn	SMALLINT NOT NULL
gsn	VARCHAR(10)

subject_id

subject_id is a unique identifier which specifies an individual patient. Any rows associated with a single subject_id pertain to the same individual.

stay_id

An identifier which uniquely identifies a single emergency department stay for a single patient.

charttime

The time at which the medication was charted, which is the closest approximation to the time the medication was administered.

med_rn

A row number for the medicine used to group single dispensations.

name

The name of the medicine.

gsn

The Generic Sequence Number (GSN), an ontology which provides a code for each medicine.

gsn_rn

As a medicine may be a member of multiple groups in the GSN ontology, this row number differentiates them. The order of gsn_rn has no meaning.