Clinical Analysis: 30M - Bathroom Slip, Brief Unresponsiveness, Now Vertigo

What Actually Happened? - The Key Diagnostic Question

• If he lost consciousness FIRST and then fell - this is true syncope
• If he slipped/fell and hit his head FIRST - this is likely concussion/head trauma, and the brief unresponsiveness is traumatic LOC
• This single question changes the entire workup

Scenario 1: Traumatic LOC (Fall → Head Impact → LOC)

"Concussion refers to transient alteration in mental status that may or may not involve loss of consciousness, resulting from trauma to the brain. Hallmarks are amnesia and confusion; other symptoms may include headache, visual disturbances, and dizziness."

• Post-traumatic BPPV is extremely common after head trauma. The impact can dislodge otoconia (calcium crystite crystals) from the utricle into the semicircular canals. This is supported by Symptom to Diagnosis: "BPPV may be caused by labyrinthitis or head trauma."
• Vertigo can also represent post-concussion syndrome (typically resolves in days to weeks)

• Severe headache, repeated vomiting, progressive confusion = intracranial hemorrhage (epidural, subdural, subarachnoid)
• Ask: was there any period of lucidity followed by deterioration? ("Talk and die" pattern - seen especially in young adults where the brain fully occupies the intracranial space)
• A non-contrast CT head is indicated if any of these features are present

Scenario 2: True Syncope (LOC FIRST → Then Fell)

"Cardiac syncope...must be distinguished from reflex or orthostatic syncope. Dysrhythmic syncope classically presents without a prodrome."

1. Hypertrophic Cardiomyopathy (HCM) - most common cause of sudden cardiac death in young people; ECG may show LVH, deep Q waves, inverted T waves
2. WPW/Pre-excitation - ECG shows delta wave, short PR; risk of fast AF causing LOC
3. Long QT syndrome - ECG shows prolonged QTc; can cause polymorphic VT (torsades) with LOC
4. Brugada syndrome - ECG shows RBBB + ST elevation V1-V3
5. Arrhythmogenic RV cardiomyopathy (ARVC) - epsilon waves, inverted T in right precordial leads

Current Vitals - What Do They Tell You?

• Is there ST deviation?
• QTc measurement?
• Any delta wave or short PR?
• Bundle branch block?
• LVH criteria?
• Epsilon wave or T-wave inversions in V1-V3?

• ST elevation/depression (ACS)
• Pre-excitation (WPW)
• Long QT
• RBBB + ST elevation V1-V3 (Brugada)
• LVH with deep T inversions (HCM)

Recommended Workup

• Clarify the sequence of events (did he fall first or black out first?)
• Detailed ECG reading - get exact QTc, rhythm, look for pre-excitation, Brugada pattern
• Blood glucose (to rule out hypoglycemia as syncope mimic)
• CBC (anemia contributing to tachycardia?)
• Neuro exam - if any focal deficit, memory gap, or confusion -> CT head non-contrast urgently

• CT head if: GCS < 15, vomiting, severe headache, amnesia, age-related risk, signs of basal skull fracture
• Dix-Hallpike test for BPPV today (vertigo that worsens with position change)
• Epley maneuver if BPPV confirmed

• 2D Echocardiogram (rule out structural heart disease - HCM, aortic stenosis)
• Holter/24-hour ECG monitoring (capture intermittent arrhythmia)
• Consider referral to cardiology if echo or Holter is abnormal
• Tilt-table test if workup is negative and vasovagal is suspected

• Repeat BP at rest (anxiety/pain may explain it today)
• Check for secondary hypertension if confirmed on repeat
• Tachycardia: consider CBC, thyroid function, chest X-ray

Clinical Bottom Line

1. Brief LOC - could be concussion vs. syncope; the bathroom setting and brief duration of unresponsiveness (5-10 sec) with complete and rapid recovery points toward either situational syncope OR mild concussion
2. Vertigo today - most likely post-traumatic BPPV if a fall/head impact occurred; can be confirmed with Dix-Hallpike test at bedside
3. Borderline ECG + tachycardia + Stage 1 HTN - even if the event was non-cardiac, these findings need to be characterized and followed up; do NOT discharge without understanding what the ECG abnormality is