Bronchiolitis

Abdominal aortic aneurysm Acute coronary syndrome (NSTEMI)Acute coronary syndrome (STEMI)Acute decompensated heart failure Acute limb ischemia Acute mesenteric ischemia Aortic dissection Aortic stenosis Atrial fibrillation and flutter Bradyarrhythmia and heart block Cardiac arrest Deep vein thrombosis Myocarditis Pericarditis Pulmonary embolism Stable angina Superficial thrombophlebitis Superior vena cava syndrome Supraventricular tachycardia Syncope (cardiogenic)Unstable angina Ventricular tachycardia

Acute bronchitis Acute respiratory failure Aspiration pneumonia Asthma exacerbation Bronchiolitis Community-acquired pneumonia COVID-19 pneumonia COPD exacerbation Croup Croup (laryngotracheobronchitis)Epiglottitis Hemothorax Hospital-acquired pneumonia Pleural effusion Pneumothorax (traumatic)Pulmonary contusion Spontaneous pneumothorax

Bell's palsy Benign paroxysmal positional vertigo Brain abscess Cauda equina syndrome Cervical radiculopathy Concussion (mild traumatic brain injury)Encephalitis Guillain-Barré syndrome Hemorrhagic stroke (intracerebral)Ischemic stroke Lumbar radiculopathy Malignant spinal cord compression Migraine Peripheral neuropathy (acute)Retropharyngeal abscess Schizophrenia (acute exacerbation)Seizure (breakthrough:known epilepsy)Seizure (first-time)Spinal cord injury Status epilepticus Subarachnoid hemorrhage Tension headache Transient ischemic attack Traumatic brain injury (moderate-severe)Vestibular neuritis Viral meningitis

Acute appendicitis Acute cholecystitis Acute diverticulitis Acute pancreatitis Anal fissure Choledocholithiasis and cholangitis Clostridioides difficile colitis Gastritis Gastroenteritis (viral and bacterial)Gastroesophageal reflux disease Incarcerated or strangulated hernia Inflammatory bowel disease flare Large bowel obstruction Lower GI hemorrhage Peptic ulcer disease Perforated viscus Small bowel obstruction Upper GI hemorrhage

Acute prostatitis Acute urinary retention Ectopic pregnancy Epididymitis Orchitis Ovarian torsion Paraphimosis Pelvic inflammatory disease Priapism Pyelonephritis Renal laceration Ruptured ovarian cyst Testicular torsion Tubo-ovarian abscess Urinary tract infection (uncomplicated)Urolithiasis (renal colic)Vaginal bleeding (non-pregnant)

Acute sinusitis Acute tonsillitis Acute upper respiratory infection Animal bite Bacterial meningitis Cellulitis Conjunctivitis (bacterial)Dental abscess Endocarditis Febrile neutropenia Fournier gangrene Hand-foot-mouth disease Hepatitis (acute)Herpes zoster HIV-related illness Human bite Impetigo Infected diabetic foot ulcer Infectious mononucleosis Influenza Necrotizing fasciitis Osteomyelitis Otitis externa Parasitic infection Periorbital cellulitis Peritonsillar abscess Scabies Sepsis Septic arthritis Spontaneous bacterial peritonitis Tick-borne illness (Lyme disease)Tinea infection Tuberculosis Viral exanthem Wound infection

Achilles tendon rupture ACL and mceniscus tear Ankle fracture Ankle sprain Burn Calcaneus fracture Cervical spine fracture Clavicle fracture Dental avulsion Distal radius fracture Drowning Elbow fracture and dislocation Electrical injury Facial bone fracture Facial laceration Femur fracture Fingertip amputation Forearm fracture (radius and ulna)Frostbite Hand:finger laceration Heat exhaustion Heat stroke Hip fracture Humeral shaft fracture Knee dislocation Knee sprain Lightning injury Mandible fracture Metacarpal fracture Metatarsal fracture Muscle strain Nasal fracture Non-accidental trauma Orbital fracture Patella fracture Phalanx fracture (finger)Proximal humerus fracture Pulmonary contusion Rib fracture Rotator cuff tear (acute traumatic)Scalp laceration Scaphoid fracture Shoulder dislocation Skull fracture Splenic laceration Sternal fracture Supracondylar pediatric fracture Tendon laceration (hand:wrist)Thoracic and lumbar spine fracture Tibia:fibula fracture Tibial plateau fracture Toe fracture Traumatic epistaxis Traumatic hyphema

Acetaminophen toxicity Alcohol intoxication Alcohol withdrawal Anticholinergic toxicity Anticoagulant overdose Benzodiazepine overdose Benzodiazepine:sedative overdose Beta-blocker and calcium channel blocker toxicity Carbon monoxide poisoning Caustic ingestion Digoxin toxicity Drug eruption Foreign body ingestion Opioid intoxication Opioid overdose Opioid withdrawal Organophosphate Salicylate toxicity Serotonin syndrome Stimulant intoxication (cocaine, methamphetamine)Tricyclic antidepressant overdose

Acute anxiety Acute psychosis Agitation:behavioral emergency Bipolar disorder Conversion disorder Major depressive episode Neuroleptic malignant syndrome Suicidal ideation and attempt

Acute low back pain (mechanical)Bursitis Cervical radiculopathy Costochondritis Gout (acute)Lumbar radiculopathy Pseudogout Tendinitis

Acute eczema (Eczema acute flare)Allergic contact dermatitis Erythema multiforme Henoch-Schönlein purpura Pressure injury Psoriasis (acute flare)Stevens-Johnson syndrome Toxic epidermal necrolysis Urticaria (acute)

Envenomation (snake, spider, insect)High-altitude illness Hypothermia

Acute chest syndrome Coagulopathy Hyperviscosity syndrome Sickle cell crisis (vaso-occlusive)Symptomatic anemia Thrombocytopenia (severe)Tumor lysis syndrome

Bronchiolitis Croup Emergency delivery Febrile seizure Kawasaki disease Neonatal jaundice Neonatal sepsis Nursemaid's elbow Pediatric fever 0 to 28 days Pediatric fever 29 to 60 days Pediatric fever 61 to 90 days Pyloric stenosis Slipped capital femoral epiphysis Intussusception

Adrenal crisis Diabetic ketoacidosis Hypercalcemia Hyperosmolar hyperglycemic state Hypertensive emergency Hypertensive urgency Hypoglycemia Myasthenia gravis crisis Myxedema coma Severe hyperkalemia Severe hyponatremia Thyroid storm

Acute laryngitis Acute otitis media Acute pharyngitis Cerumen impaction Epistaxis (anterior)Nasal foreign body Otitis externa Tympanic membrane perforation

Acute angle-closure glaucoma Central retinal artery occlusion Chemical eye injury Corneal abrasion Corneal ulcer Globe rupture Ocular foreign body Orbital cellulitis Retinal detachment

Hyperemesis gravidarum Painful vaginal bleeding in pregnancy Placenta previa Placental abruption Preeclampsia:eclampsia Preterm labor Threatened:inevitable:incomplete abortion

Anaphylaxis Angioedema Cannabis-induced hyperemesis

Bronchiolitis

Clinical Assessment Checklist

Browse categories and answer follow-up questions to refine your symptom profile.

Immediate priorities

First look triage

Apnea

Cyanosis

Severe work of breathing

Altered mental status

Poor perfusion

Immediate escalation triggers

Recurrent apnea

SpO2 persistently <90% on room air

Exhaustion with rising CO2

Airway and breathing

Positioning

Sniffing position for infant

Head tilt chin lift if obstructed

Suction strategy

Nasal suction prior to feeds

Deep suction only if obstruction not relieved and deterioration

Oxygenation targets

SpO2 goal 90% or higher for most infants

Higher target if significant cardiopulmonary disease

Ventilatory support escalation

If persistent hypoxemia, low flow nasal cannula

If persistent distress, high flow nasal cannula

If failure of noninvasive support, CPAP or intubation

Circulation and hydration

Hydration assessment

Intake reduction

Urine output decline

Clinical dehydration

Fluid strategy

Oral feeds if safe

NG feeds if respiratory status allows

IV isotonic fluids if unable to feed

Shock differential if hypotension

Sepsis

Dehydration

Congenital heart disease

Isolation and infection prevention

Droplet and contact precautions

Cohorting during outbreaks

Key concepts

Primary disease frame

Viral lower airway inflammation and edema

Increased mucus and small airway obstruction

Air trapping with atelectasis risk

High risk phenotypes

Age under 12 weeks

Prematurity

Chronic lung disease

Hemodynamically significant congenital heart disease

Immunodeficiency

Neuromuscular weakness

Monitoring and reassessment

Monitoring plan

Continuous pulse oximetry for moderate to severe disease

Intermittent SpO2 checks for improving mild disease

Respiratory rate trend

Work of breathing trend

Feeding tolerance trend

Failure criteria

Rising oxygen requirement

Persistent tachypnea with fatigue

Recurrent apnea

Worsening hypercapnia on blood gas

Inability to maintain hydration

Medical Disclaimer

SymptomDx is an educational tool for medical professionals. It does not replace clinical judgment. Verify all clinical data and drug dosages with authoritative sources.

Last Reviewed: January 15, 2026 by SymptomDX Medical Team

SymptomDx is an educational tool for medical professionals. It does not replace clinical judgment. Verify all clinical data and drug dosages with authoritative sources.

← Management Protocols

Home Management ProtocolsBronchiolitis

Bronchiolitis

Clinical Assessment Checklist

Browse categories and answer follow-up questions to refine your symptom profile.

Immediate priorities

First look triage

Apnea

Cyanosis

Severe work of breathing

Altered mental status

Poor perfusion

Immediate escalation triggers

Recurrent apnea

SpO2 persistently <90% on room air

Exhaustion with rising CO2

Airway and breathing

Positioning

Sniffing position for infant

Head tilt chin lift if obstructed

Suction strategy

Nasal suction prior to feeds

Deep suction only if obstruction not relieved and deterioration

Oxygenation targets

SpO2 goal 90% or higher for most infants

Higher target if significant cardiopulmonary disease

Ventilatory support escalation

If persistent hypoxemia, low flow nasal cannula

If persistent distress, high flow nasal cannula

If failure of noninvasive support, CPAP or intubation

Circulation and hydration

Hydration assessment

Intake reduction

Urine output decline

Clinical dehydration

Fluid strategy

Oral feeds if safe

NG feeds if respiratory status allows

IV isotonic fluids if unable to feed

Shock differential if hypotension

Sepsis

Dehydration

Congenital heart disease

Isolation and infection prevention

Droplet and contact precautions

Cohorting during outbreaks

Key concepts

Primary disease frame

Viral lower airway inflammation and edema

Increased mucus and small airway obstruction

Air trapping with atelectasis risk

High risk phenotypes

Age under 12 weeks

Prematurity

Chronic lung disease

Hemodynamically significant congenital heart disease

Immunodeficiency

Neuromuscular weakness

Monitoring and reassessment

Monitoring plan

Continuous pulse oximetry for moderate to severe disease

Intermittent SpO2 checks for improving mild disease

Respiratory rate trend

Work of breathing trend

Feeding tolerance trend

Failure criteria

Rising oxygen requirement

Persistent tachypnea with fatigue

Recurrent apnea

Worsening hypercapnia on blood gas

Inability to maintain hydration

Medical Disclaimer

SymptomDx is an educational tool for medical professionals. It does not replace clinical judgment. Verify all clinical data and drug dosages with authoritative sources.

Last Reviewed: January 15, 2026 by SymptomDX Medical Team

SymptomDx is an educational tool for medical professionals. It does not replace clinical judgment. Verify all clinical data and drug dosages with authoritative sources.

← Management Protocols

Home Management ProtocolsBronchiolitis