Medical Abbreviations

A & O

Alert and oriented

NICU

Neonatal Intensive Care Unit

AC

Before meals (ante cibum)

NKDA

No known drug allergies

(B)

Bilateral

NPO

Nothing by mouth (nil per os)

BID

Twice a day (bis in die)

OR

Operating Room

BMI

Body mass index

PACU

Post-anesthesia Care Unit

BP

Blood pressure

PC

After meals (post cibum)

CC

Chief complaint

PERRLA

Pupils equal, round, and reactive to light and accommodation

c/o

Complains of

PE

Physical exam

CTA

Clear to auscultation

PMH/PMHx

Past medical history

d/c

Discontinue

PO

By mouth (per os)

DC

Discharge (leave medical facility)

Post-op

Post-operative Care

DNR

Do not resuscitate

PR

Rectal (per rectum)

Dx

Diagnosis

Pre-op

Pre-operative Care

DDx

Differential diagnosis

PRN

As needed (per re nata)

ER

Emergency Room

pt

Patient

f/u

Follow up

QD

Once a day (quaque die)

FH/FHx

Family history

QHS

At bedtime (quaque hora smoni)

h/o

History of

(R)

Right

H & P

History and physical

ROS

Review of symptoms

HPI

History of present illness

RR

Respiratory rate

HR

Heart rate

RRR

Regular rate and rhythm (heart)

Ht

Height

Rx

Therapy or prescription

i/o

Intake and output (fluids)

SC

Subcutaneous

ICU

Intensive Care Unit

SH/SHx

Social history

IM

Intramuscular

T

Temperature

IV

Intravenous

TID

Three times a day (ter in die)

(L)

Left

Tx

Treatment

L & D

Labor and Delivery

VS

Vital signs

N & V

Nausea and vomiting

WDWN

Well developed, well nourished

NAD

No acute distress

Wt

Weight