acute respiratory distress syndrome air hunger alveolitis amyotrophic lateral sclerosis anemia ankylosing spondylitis anthrax anxiety disorder aortic dissection apnea asphyxia asthma atelectasis bacillus anthracis blood flow bone fracture bradycardia bradypnea bronchitis bruit cancer cardiac tamponade cardiomyopathy carotid bruit chest pain cheyne-stokes respiration chronic obstructive pulmonary disease circulatory system constrictive pericarditis cough cystic fibrosis diseases database edema emphysema empty nose syndrome epiglottitis epistaxis eupnea fentanyl gpnotebook gangrene greek language heart failure heart murmur heart sounds hemoptysis hiccup hypercapnia hypersensitivity pneumonitis hyperventilation hypothyroidism hypoventilation icd interstitial lung disease ischaemic heart disease kyphosis larynx leukemia lung cancer malignant hypertension medical subject headings medical sign medlineplus metabolic acidosis mouth breathing multiple sclerosis myasthenia gravis obesity orthopnoea palpitation panic attack pectus excavatum pericardial effusion pericardium pharynx phrenic nerve platypnea pleural effusion pleurisy pneumoconiosis pneumonia pneumothorax polycystic liver disease pregnancy pulmonary aspiration pulmonary edema pulmonary embolism pulmonary hypertension rales respiratory arrest respiratory system rhonchi sarcoidosis scoliosis sepsis sputum stridor superior vena cava syndrome symptom tachycardia tachypnea trepopnea tumor valvular heart disease wheeze