11Neck and Vascular Examination (Pulsatile)

FPulsatile tinnitus is a different problem

Pulse-synchronous tinnitus — a rhythmic whooshing or thumping in time with the heartbeat — signals turbulent or transmitted blood flow near the ear rather than the static neural noise of ordinary subjective tinnitus. It may be objective (audible to the examiner) or subjective, arterial or venous, and a proportion conceal a serious cause such as a dural arteriovenous fistula or idiopathic intracranial hypertension [2003].

The bedside vascular examination therefore has two jobs: to detect abnormal sound, and to perform simple manoeuvres that change the sound — because what alters it often reveals where it comes from [2024].

TAuscultation and the inspection that goes with it

Auscultate systematically with the bell in a quiet room: over the periauricular and mastoid region, the orbit, and the neck along the carotid and at the bifurcation. Ask the patient to hold their breath to remove breath sounds. A bruit synchronous with the tinnitus strongly suggests a vascular source and mandates angiographic imaging [2008].

Couple this with otoscopy — a red retrotympanic mass (glomus tympanicum) or a bluish pulsatile structure (high-riding jugular bulb, aberrant carotid) reframes the case — and with vital signs and a general look for anaemia (pallor) or thyroid signs, both of which raise cardiac output and can drive a flow murmur in the ear [2025].

TThe manoeuvres: what stops or changes the sound

A few bedside manoeuvres are highly informative. Light ipsilateral internal-jugular compression (gentle pressure low in the neck) that abolishes the tinnitus points to a venous source, because it interrupts the turbulent venous outflow. Head rotation toward the symptomatic side can compress the jugular and likewise quieten a venous hum, whereas rotation away may worsen it.

Effort matters too: a Valsalva manoeuvre and bending forward typically modulate venous pulsatile tinnitus, while pressure over or near the carotid that changes an arterial bruit suggests an arterial source [2024]. Always note whether standing, exertion or head position alters the sound — positional change is characteristic of venous and dehiscence-related causes [2003].

CBlood pressure, systemic clues and when to escalate

Measure blood pressure — uncontrolled hypertension amplifies vascular turbulence — and consider sitting/standing readings if intracranial pressure is in question. Look actively for the idiopathic-intracranial-hypertension phenotype (an overweight woman of childbearing age with headache and visual symptoms), which is a classic, treatable cause of venous pulsatile tinnitus and warrants fundoscopy for papilloedema [2025].

Escalate urgently when a true bruit is present, when neurological signs accompany the tinnitus, or when otoscopy shows a retrotympanic mass: these require dedicated vascular imaging (CT/MR angiography, venography) rather than reassurance [2008]. Never biopsy or instrument a pulsatile retrotympanic lesion at the bedside.