Respiratory Illness

Respiratory System

The organ system responsible for gas exchange, including structures like the trachea, bronchi, and lungs.

Diaphragm

A muscle that separates the chest from the abdomen and plays a crucial role in breathing.

Inspiration

The act of inhaling air into the lungs.

Expiration

The act of exhaling air from the lungs.

Alveoli

Small air sacs in the lungs where gas exchange occurs.

Compliance

A measure of the lung's ability to stretch and expand; calculated by the change in volume divided by the change in pressure.

Resistance

Opposition to airflow in the respiratory system, affected by airway diameter and flow velocity.

Diffusion

The movement of substances across a concentration gradient; in respiration, it refers to the exchange of oxygen and carbon dioxide.

Oxygenation

The process of providing oxygen to the body's cells.

Tachypnea

Abnormally rapid breathing rate.

Bradypnea

Abnormally slow breathing rate.

Hyperventilation

Increased rate and depth of breathing, often leading to a decrease in carbon dioxide.

Hypoventilation

Decreased rate and depth of breathing, often resulting in an increase in carbon dioxide.

Croup

A respiratory condition characterized by a distinctive barking cough, stridor, and breathing difficulties, primarily affecting young children.

Epiglottitis

Inflammation of the epiglottis, often requiring emergency medical attention.

Bronchiolitis

Inflammation of the bronchioles, commonly caused by viral infections like RSV.

Pneumonia

Inflammation of lung tissue caused by infection, characterized by symptoms like cough and difficulty breathing.

Foreign Body Aspiration

Blocking of the airway from inhaled objects, posing serious health risks, especially in young children.

Vesicular breath sounds

Breath sounds heard over the lung fields; softer and longer on inspiration.

Bronchial breath sounds

Loud breath sounds heard over the trachea, characterized by a short inspiratory phase and a longer expiratory phase.

Bronchovesicular breath sounds

Breath sounds heard over major bronchi; inspiration is longer and higher pitched than in vesicular breathing.

Respiratory distress

Struggle or difficulty in breathing, often accompanied by abnormal respiratory rates and effort.

Nasal flaring

Widening of the nostrils during breathing, indicating respiratory distress.

Retractions

Inward movement of the skin around the ribs or sternum during inhalation, indicating obstructed breathing.

Stridor

A high-pitched, wheezing sound caused by disrupted airflow; often associated with obstruction.

Grunting

A sound made during exhalation indicating respiratory distress, typically seen in pediatric patients.

Clubbing

Enlargement of the fingertips or toes, often indicative of chronic respiratory disease.

Antibiotics

Medications used to treat bacterial infections, not effective against viruses.

Cough suppressants

Medications used to relieve cough; may not be routinely recommended for children.

Airway obstruction

Blocking of the airway, often requiring immediate intervention, especially in children.

Acute Viral Nasopharyngitis

Common cold caused by viruses like rhinovirus and RSV, leading to upper respiratory symptoms.

Fever

Increase in body temperature, commonly associated with infections.

Lymphadenopathy

Swelling of lymph nodes, often indicating infection.

Tonsillitis

Inflammation of the tonsils; can be caused by either viral or bacterial infections.

Scarlet fever

A bacterial infection characterized by a rash, typically follows streptococcal pharyngitis.

Seesaw breathing

A pattern of breathing seen in severe respiratory distress where the chest and abdomen move in opposite directions.

Palivizumab

Medication used for the prevention of severe RSV infections in high-risk infants.

Vagal stimulation

Physiological responses triggered by the vagus nerve that can affect heart rate and airway resistance.

Pulmonary parenchyma

The functional tissue of the lungs involved in gas exchange.

Chest radiograph

An X-ray of the chest used to diagnose lung conditions like pneumonia or pneumothorax.

Continuous pulse oximetry

A non-invasive method to monitor oxygen saturation in the blood.

Heated high-flow nasal cannula (HHFNC)

A device used for providing supplemental oxygen and humidity to patients with respiratory distress.

Hydration

The process of providing adequate fluid intake to maintain normal body functions, especially important in sickness.

Analgesics

Medications administered to relieve pain, often used postoperatively.

Drooling

Excessive saliva production, often a symptom of difficulty swallowing.

IV Fluids

Intravenous administration of fluids, typically used in hospitalized patients for hydration.

Tonsillectomy

Surgical procedure to remove the tonsils, indicated in cases of chronic tonsillitis.

Respiratory Syncytial Virus (RSV)

A common viral pathogen causing respiratory infections, particularly in infants and young children.

Hypoxemia

Low levels of oxygen in the blood.

Nitroprusside

Medication used for severe hypertension, not typically related to respiratory care.

Chronic tonsillitis

Recurrent tonsil infections leading to persistent symptoms, often treated surgically.

Tracheostomy

Surgical procedure to create an opening in the trachea for airway management.

Laryngeal involvement

Refers to conditions or issues affecting the larynx, often pertinent in respiratory syndromes.

Airway maintenance

Interventions to keep the airway open and clear, critical in managing respiratory distress.

Respiratory System

The organ system responsible for gas exchange in the body, which includes vital structures such as the trachea, bronchi, lungs, and diaphragm. It plays a crucial role in delivering oxygen to the bloodstream and removing carbon dioxide.

Diaphragm

A dome-shaped muscle located at the base of the thoracic cavity, separating the chest from the abdomen. It contracts and flattens during inhalation, increasing the volume of the thoracic cavity and allowing air to flow into the lungs.

Inspiration

The process of inhaling air into the lungs, during which the diaphragm contracts and the ribcage expands, creating a negative pressure that draws air in through the nose or mouth.

Expiration

The process of exhaling air from the lungs, which occurs when the diaphragm relaxes and the ribcage decreases in volume, pushing air out of the lungs.

Alveoli

Tiny, balloon-like structures located at the end of bronchioles in the lungs where gas exchange occurs. Oxygen diffuses into the bloodstream while carbon dioxide diffuses out to be expelled.

Compliance

The ability of the lungs to stretch and expand during inhalation. It is measured by the change in lung volume divided by the change in pressure and is crucial for effective breathing.

Resistance

The opposition to airflow in the respiratory system, influenced by the diameter of the airways and the velocity of airflow. Higher resistance can lead to difficulties in breathing.

Diffusion

The process of substances moving across a concentration gradient. In respiration, it describes how oxygen and carbon dioxide move between the alveoli and the blood.

Oxygenation

The process of supplying oxygen to the body's cells through the bloodstream, essential for cellular respiration and energy production.

Tachypnea

A medical term for abnormally rapid breathing, often exceeding the normal respiratory rate of 12 to 20 breaths per minute in adults.

Bradypnea

A condition characterized by abnormally slow breathing, with a respiratory rate of fewer than 12 breaths per minute in adults.

Hyperventilation

An increased rate and depth of breathing, which can lead to a decrease in carbon dioxide levels in the blood, often causing symptoms like dizziness or tingling.

Hypoventilation

A decreased rate and depth of breathing resulting in increased carbon dioxide levels in the blood, which can lead to respiratory acidosis.

Croup

A respiratory illness commonly affecting young children, characterized by a barking cough, stridor, and difficulty breathing, often caused by viral infections.

Epiglottitis

An infection that causes inflammation of the epiglottis, a flap that covers the trachea. It can lead to severe airway obstruction and requires prompt medical attention.

Bronchiolitis

An infection of the small air passages in the lungs (bronchioles), typically caused by viral infections such as RSV. It is especially common in infants.

Pneumonia

An infection that inflames the air sacs in one or both lungs, which may fill with fluid or pus, causing cough, fever, chills, and difficulty breathing.

Foreign Body Aspiration

The inhalation of objects into the airway, leading to obstruction and serious respiratory distress, particularly in young children who might accidentally inhale small objects.

Vesicular breath sounds

Soft, low-pitched breath sounds normally heard over the lung fields during inspiration; these sounds are crucial in assessing lung function.

Bronchial breath sounds

Loud, high-pitched sounds typically heard over the trachea, characterized by a short inspiratory phase and a longer expiratory phase; abnormal when heard over peripheral lung areas.

Bronchovesicular breath sounds

Breath sounds heard over the major bronchi; the sound of inspiration is longer and higher-pitched than expiration. These sounds are normal in certain lung areas and of diagnostic significance.

Respiratory distress

A condition manifested by difficulty in breathing and an abnormal increase or decrease in respiratory rate. It may include signs such as nasal flaring, retractions, and grunting.

Nasal flaring

The widening of the nostrils during breathing, which is often observed in respiratory distress as a physiological response to increased respiratory effort.

Retractions

Inward movement of the skin around the ribs or sternum during inhalation, indicating obstructed breathing and an increased effort to inhale.

Stridor

A high-pitched, wheezing sound produced during breathing due to disrupted airflow, commonly associated with upper airway obstruction.

Grunting

A sound produced during exhalation seen in respiratory distress, especially in pediatric patients, indicating an attempt to increase end-expiratory lung volume.

Clubbing

The enlargement or swelling of the end of the fingers or toes, often associated with chronic respiratory diseases, and indicative of long-term oxygen deprivation.

Antibiotics

Medications used to treat bacterial infections by either killing bacteria or inhibiting their growth; they are ineffective against viral infections.

Cough suppressants

Medications that help alleviate cough, but their use in children is controversial as they may not always be appropriate or effective.

Airway obstruction

A serious condition in which the airway becomes blocked on impulse or due to an object, requiring immediate medical intervention to restore airflow.

Acute Viral Nasopharyngitis

Commonly known as the cold, this condition is caused by viruses such as rhinovirus and RSV, leading to symptoms of nasal congestion, sore throat, and cough.

Fever

An elevated body temperature often indicative of infection or illness, commonly accompanied by other symptoms such as chills, sweating, and malaise.

Lymphadenopathy

Swelling or enlargement of the lymph nodes, frequently indicating the presence of an underlying infection or inflammatory process.

Tonsillitis

The inflammation and swelling of the tonsils, which can result from viral or bacterial infections, often leading to sore throat, difficulty swallowing, and fever.

Scarlet fever

A bacterial infection caused by streptococcus, characterized by a bright red rash, sore throat, and fever, usually following strep throat.

Seesaw breathing

An abnormal breathing pattern typical in severe respiratory distress, where the chest moves up while the abdomen moves down and vice versa.

Palivizumab

A monoclonal antibody used as a preventive treatment against severe RSV infections, particularly in high-risk infants.

Vagal stimulation

The physiological effects resulting from activation of the vagus nerve, which can lead to a reduction in heart rate and changes in airway resistance.

Pulmonary parenchyma

The functional tissue of the lungs responsible for gas exchange, including the alveoli, bronchioles, and surrounding capillary networks.

Chest radiograph

An X-ray imaging technique used for visualizing the structures within the chest, useful in diagnosing conditions like pneumonia or pneumothorax.

Continuous pulse oximetry

A non-invasive method of continuously monitoring the oxygen saturation levels in the blood, crucial for assessing respiratory function.

Heated high-flow nasal cannula (HHFNC)

A device providing supplemental oxygen and humidification for patients experiencing respiratory distress, especially in pediatric settings.

Hydration

The provision of adequate fluids to maintain normal physiological functions and is especially critical in managing conditions affecting the respiratory system.

Analgesics

Medications designed to relieve pain, frequently used in postoperative care to ensure patient comfort and promote recovery.

Drooling

Excessive salivation, which may occur due to difficulty swallowing or other acute health issues, often observed in conditions affecting the throat.

IV Fluids

Intravenously administered fluids used for hydration and maintaining electrolyte balance in hospitalized patients.