Causes and Management of Acute
Dyspnea
Dyspnea - ANSWER: Sensation of shortness of breath or breathlessness.
Oxygen Utilization - ANSWER: The process of the body using oxygen for cellular
respiration and energy production.
Respiratory Complex - ANSWER: Brain stem area central to dyspnea, receives input
from multiple receptors, lungs, and chest wall, and generates efferent commands for
breathing.
Corollary Discharge - ANSWER: Process where the brain is made aware of dyspnea
through simultaneous signals to the primary sensory cortex.
Central Respiratory Drive - ANSWER: Increase in the drive to breathe from the brain's
respiratory centers, caused by factors such as hypoxia, hypercapnia, or exercise.
Altered Central Perception - ANSWER: Changes in how the brain perceives respiratory
sensations, leading to an exaggerated or distorted perception of dyspnea.
Pulmonary Function Tests - ANSWER: Diagnostic tests to assess lung function,
including spirometry, lung volumes, and diffusing capacity.
Differential Diagnosis - ANSWER: Process of distinguishing between the major causes
of dyspnea to establish a diagnosis.
Pulmonary Embolism - ANSWER: Blockage of the main artery of the lung or one of its
branches, usually caused by a blood clot.
Kerley B-Lines - ANSWER: Thin linear opacities indicating interstitial edema, often seen
in pulmonary edema.
Pursed Lip Breathing - ANSWER: Breathing technique involving inhaling through the
nose and exhaling slowly through pursed lips, helpful for relieving breathlessness in
COPD.
A-a Gradient - ANSWER: Alveolar-arterial gradient measuring the difference between
oxygen concentration in the alveoli and arterial system, useful in diagnosing hypoxemia.
, Troponin - ANSWER: Cardiac biomarker used to diagnose heart attack or other heart
injuries.
Brain Natriuretic Peptide (BNP) - ANSWER: Hormone released from the heart's
ventricles in response to excessive stretching of heart muscle cells, elevated in
congestive heart failure.
Pulmonary/Cardiac Rehabilitation - ANSWER: Programs tailored to individuals with
pulmonary or cardiac conditions to improve exercise tolerance and overall quality of life.
Alveolar Edema - ANSWER: Accumulation of fluid in the air sacs of the lungs,
characteristic of acute pulmonary edema.
Pneumothorax - ANSWER: Collapsed lung due to the presence of air in the pleural
space.
Furosemide - ANSWER: Loop diuretic used to treat fluid retention in conditions such as
congestive heart failure and pulmonary edema.
D-Dimer - ANSWER: Blood test to help rule out the presence of a blood clot.
Hyperinflation - ANSWER: Overexpansion of the lungs, often seen in conditions such as
chronic obstructive pulmonary disease (COPD).
Consolidation - ANSWER: Density within the lung parenchyma, suggestive of
pneumonia or other acute lung pathology.
Pleural Effusion - ANSWER: Accumulation of fluid in the pleural space surrounding the
lungs, seen on chest X-ray as blunting of the costophrenic angles or as fluid levels.
Spirometry - ANSWER: Pulmonary function test measuring the amount (volume) and/or
speed (flow) of air that can be inhaled and exhaled.
Pulmonary Edema - ANSWER: Build-up of fluid in the air sacs of the lungs, leading to
impaired gas exchange and breathlessness.
Pulmonary Function Tests - ANSWER: Diagnostic tests to assess lung function,
including spirometry, lung volumes, and diffusing capacity.
Pulmonary Embolism - ANSWER: Blockage of the main artery of the lung or one of its
branches, usually caused by a blood clot.
Pursed Lip Breathing - ANSWER: Breathing technique involving inhaling through the
nose and exhaling slowly through pursed lips, helpful for relieving breathlessness in
COPD.
Dyspnea
Dyspnea - ANSWER: Sensation of shortness of breath or breathlessness.
Oxygen Utilization - ANSWER: The process of the body using oxygen for cellular
respiration and energy production.
Respiratory Complex - ANSWER: Brain stem area central to dyspnea, receives input
from multiple receptors, lungs, and chest wall, and generates efferent commands for
breathing.
Corollary Discharge - ANSWER: Process where the brain is made aware of dyspnea
through simultaneous signals to the primary sensory cortex.
Central Respiratory Drive - ANSWER: Increase in the drive to breathe from the brain's
respiratory centers, caused by factors such as hypoxia, hypercapnia, or exercise.
Altered Central Perception - ANSWER: Changes in how the brain perceives respiratory
sensations, leading to an exaggerated or distorted perception of dyspnea.
Pulmonary Function Tests - ANSWER: Diagnostic tests to assess lung function,
including spirometry, lung volumes, and diffusing capacity.
Differential Diagnosis - ANSWER: Process of distinguishing between the major causes
of dyspnea to establish a diagnosis.
Pulmonary Embolism - ANSWER: Blockage of the main artery of the lung or one of its
branches, usually caused by a blood clot.
Kerley B-Lines - ANSWER: Thin linear opacities indicating interstitial edema, often seen
in pulmonary edema.
Pursed Lip Breathing - ANSWER: Breathing technique involving inhaling through the
nose and exhaling slowly through pursed lips, helpful for relieving breathlessness in
COPD.
A-a Gradient - ANSWER: Alveolar-arterial gradient measuring the difference between
oxygen concentration in the alveoli and arterial system, useful in diagnosing hypoxemia.
, Troponin - ANSWER: Cardiac biomarker used to diagnose heart attack or other heart
injuries.
Brain Natriuretic Peptide (BNP) - ANSWER: Hormone released from the heart's
ventricles in response to excessive stretching of heart muscle cells, elevated in
congestive heart failure.
Pulmonary/Cardiac Rehabilitation - ANSWER: Programs tailored to individuals with
pulmonary or cardiac conditions to improve exercise tolerance and overall quality of life.
Alveolar Edema - ANSWER: Accumulation of fluid in the air sacs of the lungs,
characteristic of acute pulmonary edema.
Pneumothorax - ANSWER: Collapsed lung due to the presence of air in the pleural
space.
Furosemide - ANSWER: Loop diuretic used to treat fluid retention in conditions such as
congestive heart failure and pulmonary edema.
D-Dimer - ANSWER: Blood test to help rule out the presence of a blood clot.
Hyperinflation - ANSWER: Overexpansion of the lungs, often seen in conditions such as
chronic obstructive pulmonary disease (COPD).
Consolidation - ANSWER: Density within the lung parenchyma, suggestive of
pneumonia or other acute lung pathology.
Pleural Effusion - ANSWER: Accumulation of fluid in the pleural space surrounding the
lungs, seen on chest X-ray as blunting of the costophrenic angles or as fluid levels.
Spirometry - ANSWER: Pulmonary function test measuring the amount (volume) and/or
speed (flow) of air that can be inhaled and exhaled.
Pulmonary Edema - ANSWER: Build-up of fluid in the air sacs of the lungs, leading to
impaired gas exchange and breathlessness.
Pulmonary Function Tests - ANSWER: Diagnostic tests to assess lung function,
including spirometry, lung volumes, and diffusing capacity.
Pulmonary Embolism - ANSWER: Blockage of the main artery of the lung or one of its
branches, usually caused by a blood clot.
Pursed Lip Breathing - ANSWER: Breathing technique involving inhaling through the
nose and exhaling slowly through pursed lips, helpful for relieving breathlessness in
COPD.
