The PND medical abbreviation most often means paroxysmal nocturnal dyspnea, sudden shortness of breath that wakes a person from sleep and eases after sitting or standing up. It is a classic question in heart and lung histories, especially when heart failure is being considered.
The same letters have other meanings. Ear, nose and throat notes use PND for postnasal drip, and PNDS for postnasal drip syndrome. In some countries PND also means postnatal depression. The rest of the note, and who wrote it, settles which one applies. This page explains each meaning and how to recognize it.
At a glance
Stands for
Paroxysmal nocturnal dyspnea (most common in heart and lung notes)Other meanings
Postnasal drip (PNDS for the syndrome); postnatal depression in some countriesWord roots
Paroxysmal, sudden attack; nocturnal, at night; dyspnea, hard breathingOften asked with
Orthopnea, DOE, leg swellingWhere you see it
ROS, cardiology and ENT notesDo not confuse with
Orthopnea, breathlessness when lying flat
What the PND medical abbreviation means in heart notes
Paroxysmal nocturnal dyspnea describes a specific pattern. The person falls asleep breathing comfortably, then wakes up some time later feeling short of breath, sometimes coughing or wheezing. Sitting on the edge of the bed, standing or going to a window brings relief over several minutes.
The pattern matters because it is linked with fluid backing up into the lungs when the heart is not pumping well, as in heart failure. Lying flat for a while shifts fluid from the legs back into the circulation, and a struggling heart may not keep up. PND can also occur with some lung conditions, so doctors interpret it alongside the rest of the history and exam.
Breaking the term into word roots
| Word | Meaning |
|---|---|
| Paroxysmal | Coming as a sudden attack or episode |
| Nocturnal | At night, during sleep |
| Dys- | Difficult or abnormal |
| -pnea | Breathing |
Put together, it describes sudden episodes of hard breathing at night. Dyspnea is the same root found in DOE, dyspnea on exertion, and in orthopnea, where ortho means upright.
PND versus orthopnea and DOE
Three breathing questions often appear together in a heart history.
| Term | When it happens | How it is described |
|---|---|---|
| PND | Wakes the person after a period of sleep | Relieved by sitting or standing for a while |
| Orthopnea | Soon after lying flat | Often measured by pillows needed, such as 3 pillow orthopnea |
| DOE | During activity | Noted by distance or stairs, such as one flight |
| SOB | Any time | The general term for shortness of breath |
Cardiology history: "+ orthopnea (3 pillows), + PND, + bilateral ankle swelling." The patient needs three pillows to breathe comfortably, wakes at night short of breath, and has swollen ankles, a cluster that points the team toward checking heart function.
PND as postnasal drip
In ear, nose and throat or primary care notes, PND usually means postnasal drip, and the syndrome form appears as the PNDS medical abbreviation: mucus from the nose and sinuses running down the back of the throat. It can cause throat clearing, a tickle and a lingering cough, and it often comes with colds, allergies or sinus inflammation.
When the drip is the main driver of a chronic cough, notes may call it PNDS, postnasal drip syndrome. Many clinicians now use the term upper airway cough syndrome for the same picture. A note with words like rhinitis, sinus or throat clearing nearby almost certainly means postnasal drip.
PND as postnatal depression
In the United Kingdom, Australia and some other countries, PND is a common short form of postnatal depression, a depressive illness after childbirth. US notes more often use postpartum depression. This meaning appears in obstetric, midwifery and mental health records, often alongside screening scores.
Because three very different conditions share the letters, many facilities discourage PND in records that travel between specialties. If a letter or portal note is unclear, the author can confirm. More chart shorthand is listed on the nursing abbreviations hub.
This explains what the letters can mean in a record. New breathing trouble at night, or any change in mood after a birth, deserves a conversation with a doctor, midwife or nurse.
Frequently asked questions
What does PND mean in cardiology?
It means paroxysmal nocturnal dyspnea, waking from sleep short of breath and needing to sit up. It is one of the symptoms asked about when heart failure is a possibility.
What does PNDS mean in medical terms?
PNDS means postnasal drip syndrome, a chronic cough driven by mucus draining down the back of the throat. It is also called upper airway cough syndrome.
What is the difference between PND and orthopnea?
Orthopnea starts soon after lying flat. PND wakes the person after they have been asleep for a while, and eases after they sit or stand up.
How do I know which PND meaning my note uses?
Look at the setting and nearby words. Heart and breathing details point to paroxysmal nocturnal dyspnea, sinus words point to postnasal drip, and birth or mood terms point to postnatal depression.