US Medical Glossary · By body system
Lungs and breathing
Pulmones y respiración
This page lists the 42 terms of the US medical glossary that belong to this area, grouped by kind. Each line gives the English term, its Spanish equivalent and a one-line definition; the term's own page adds seven more languages, example sentences for an appointment and its sources. Terms are placed in an area by the MedlinePlus health-topic group of the source each entry cites.
Conditions (16)
- Acute Bronchitis — Bronquitis aguda
- Acute bronchitis is a short-term inflammation of the bronchial tubes, which carry air to the lungs.
- Asthma — Asma
- Asthma is a chronic lung condition where the airways become inflamed and narrow, making it hard to breathe.
- Chronic Bronchitis — Bronquitis crónica
- Chronic bronchitis is a long-term inflammation of the bronchial tubes characterized by a productive cough lasting at least three months per year for two or more consecutive years.
- COPD (Chronic Obstructive Pulmonary Disease) — EPOC (Enfermedad Pulmonar Obstructiva Crónica)
- COPD is a progressive lung disease that makes it increasingly difficult to breathe.
- COVID-19 — COVID-19
- COVID-19 is a respiratory illness caused by the SARS-CoV-2 coronavirus.
- Emphysema — Enfisema
- Emphysema is a chronic lung disease in which the air sacs, called alveoli, are damaged and enlarged, reducing the lung's ability to exchange oxygen.
- Influenza (Flu) — Influenza (Gripe)
- Influenza, commonly called the flu, is a contagious respiratory illness caused by influenza viruses.
- Lung Cancer — Cáncer de pulmón
- Lung cancer is a malignant tumor that starts in the lungs and is one of the leading causes of cancer death in the United States.
- Pleural Effusion — Derrame pleural
- Pleural effusion is the buildup of excess fluid between the two layers of tissue that surround the lungs, called the pleura.
- Pneumonia — Neumonía
- Pneumonia is an infection of one or both lungs where the air sacs fill with fluid or pus.
- Pneumothorax (Collapsed Lung) — Neumotórax (pulmón colapsado)
- Pneumothorax occurs when air leaks into the space between the lung and chest wall, causing the lung to collapse partially or completely.
- Pulmonary Embolism — Embolia pulmonar
- A pulmonary embolism (PE) is a blockage in one or more arteries in the lungs, usually caused by a blood clot that travels from the legs or elsewhere in the body.
- Pulmonary Fibrosis — Fibrosis pulmonar
- Pulmonary fibrosis is a serious lung disease in which the lung tissue becomes scarred and thickened, making it harder for lungs to work properly.
- Respiratory Failure — Insuficiencia respiratoria
- Respiratory failure occurs when the lungs cannot maintain adequate levels of oxygen in the blood, or cannot remove enough carbon dioxide.
- Sleep Apnea — Apnea del sueño
- Sleep apnea is a condition in which breathing repeatedly stops and starts during sleep.
- Tuberculosis (TB) — Tuberculosis (TB)
- Tuberculosis is a bacterial infection caused by Mycobacterium tuberculosis that primarily affects the lungs.
Symptoms (6)
- Chest Tightness — Opresión en el pecho
- Chest tightness is the feeling that your chest is being squeezed, pressed, or constricted.
- Cough — Tos
- A cough is a reflex action that clears your airway of mucus, irritants, or foreign particles.
- Rapid Breathing — Respiración rápida
- Rapid breathing, medically called tachypnea, means breathing faster than normal.
- Shortness of Breath — Dificultad para respirar
- Shortness of breath, also called dyspnea, is the feeling that you cannot breathe in enough air or that breathing takes extra effort.
- Sleep Apnea Symptoms — Síntomas de apnea del sueño
- Sleep apnea symptoms include loud snoring, gasping or choking during sleep, waking up frequently during the night, morning headaches, dry mouth on waking, excessive daytime sleepiness despite a full night of sleep, and difficulty concentrating.
- Wheezing — Sibilancias
- Wheezing is a high-pitched whistling or squeaking sound made when you breathe, usually heard most clearly when breathing out.
Anatomy (5)
- Bronchi — Bronquios
- The bronchi are two large air passages that branch off the bottom of the trachea — the windpipe — and carry air into the right and left lungs.
- Pharynx — Faringe
- The pharynx is the muscular tube at the back of your throat that connects your nose and mouth to your esophagus (food pipe) and larynx (voice box).
- Pleura — Pleura
- The pleura is a thin two-layered membrane — a smooth, slippery lining — that wraps around each lung and also lines the inside of the chest wall.
- Sinuses — Senos paranasales
- The sinuses are hollow, air-filled spaces inside the bones of your face and skull.
- Trachea — Tráquea
- The trachea, commonly called the windpipe, is a tube about four to five inches long that runs from the back of your throat down into your chest.
Procedures (5)
- Laser Therapy — Terapia láser
- Laser therapy uses focused beams of light energy to treat a variety of medical and dermatological conditions.
- Nebulizer Treatment — Tratamiento con nebulizador
- A nebulizer treatment converts liquid medication into a fine mist that you inhale directly into your lungs through a mask or mouthpiece.
- Oxygen Therapy — Oxigenoterapia
- Oxygen therapy delivers supplemental oxygen to patients whose blood oxygen levels are too low to support normal body function.
- Respiratory Therapy — Terapia respiratoria
- Respiratory therapy is care provided by a licensed respiratory therapist to evaluate, treat, and manage patients with breathing disorders and cardiopulmonary conditions.
- Thoracentesis — Toracocentesis
- Thoracentesis is a minimally invasive procedure in which a thin needle or tube is inserted through the chest wall into the space between the lungs and the chest wall (the pleural space) to remove excess fluid.
Tests (3)
- Arterial Blood Gas (ABG) — Gases en sangre arterial
- An arterial blood gas (ABG) test measures the levels of oxygen, carbon dioxide, and pH in blood drawn directly from an artery — usually the radial artery in your wrist.
- Pulse Oximetry — Oximetría de Pulso
- Pulse oximetry is a quick, painless test that measures how much oxygen your blood is carrying.
- Spirometry — Espirometría
- Spirometry is a simple breathing test that measures how much air you can breathe in and out, and how fast you can exhale.
Maternity and children (3)
- Croup — Crup
- Croup is a viral infection of the upper airway that causes a distinctive barking cough, hoarse voice, and a high-pitched noisy breathing sound called stridor when your child inhales.
- Pediatric Asthma — Asma pediátrica
- Pediatric asthma is a chronic lung disease that causes the airways to swell and narrow, leading to wheezing, coughing (especially at night), chest tightness, and shortness of breath.
- RSV (Respiratory Syncytial Virus) — VRS (Virus Sincitial Respiratorio)
- RSV (Respiratory Syncytial Virus) is a very common respiratory virus that infects almost all children by age 2.
Medications (2)
- Antiviral — Antiviral
- Antivirals are medications that fight viral infections by slowing or stopping the virus from multiplying in the body.
- Bronchodilator — Broncodilatador
- Bronchodilators are medications that relax and open the airways in the lungs, making it easier to breathe.
Emergency care (2)
- Intubation — Intubación
- Intubation is the placement of a flexible tube (endotracheal tube) through the mouth or nose down into the airway (trachea) to help a patient breathe.
- Oxygen Saturation — Saturación de oxígeno
- Oxygen saturation (SpO2) measures the percentage of hemoglobin in your blood that is carrying oxygen.
Other areas of the glossary
- Heart and circulation — Corazón y circulación
- Digestive system — Sistema digestivo
- Brain and nerves — Cerebro y nervios
- Mental health — Salud mental
- Reproductive health and pregnancy — Salud reproductiva y embarazo
- Bones, joints and muscles — Huesos, articulaciones y músculos
- Blood and immune system — Sangre y sistema inmunitario
- Hormones, diabetes and metabolism — Hormonas, diabetes y metabolismo
- Skin, hair and nails — Piel, cabello y uñas
- General care: tests, procedures and medicines — Atención general: pruebas, procedimientos y medicamentos
This page is a language reference. It is not medical advice. Last reviewed: October 7, 2026