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Hearing & tinnitus

Bringing sound back

How hearing loss is measured, when a cochlear implant or BAHA helps, and how a rare cause of pulsing in the ear can be found and treated.

Reading your hearing test

The audiogram, explained

Pitch runs left to right, from low to high. Loudness runs top to bottom: the lower the marks, the louder a sound must be before you hear it. Where your marks fall helps decide which treatment fits.

Audiogram showing degrees of hearing loss Frequency 250 to 8000 hertz across, hearing level 0 to 120 decibels down. Bands for normal hearing (0 to 25 dB), mild, moderate, moderately severe, severe and profound loss. Illustrative right ear with profound loss and left ear with moderate loss. 020406080100120 2505001k2k4k8k Pitch, frequency in hertz (low → high) Hearing level, dB HL NormalMildModerateMod.severeSevereProfound
O Right ear, drawn in redX Left ear, drawn in blueIllustrative example, not a patient's result
  1. Normal0–25 dB

    No treatment needed. A child with speech delay may still need a full ear check.

  2. Mild to moderate26–55 dB

    Often caused by fluid, a hole in the eardrum or otosclerosis, which surgery can fix. If the inner ear is affected, hearing aids usually help.

  3. Moderately severe56–70 dB

    Powerful hearing aids. A BAHA is an option when the ear cannot take a normal hearing aid.

  4. Severe to profound71 dB and beyond

    When hearing aids no longer give clear speech, a cochlear implant is considered.

Cochlear implants

For children born deaf, and adults who lost their hearing

A cochlear implant turns sound into tiny electrical signals that stimulate the hearing nerve directly, bypassing the damaged inner ear.

  • Children: the earlier the implant, the better speech and language develop. Most children go on to mainstream school.
  • Adults and older people: age alone is not a barrier. Hearing again helps people keep working, talk with family and stay connected.
  • Nerve response testing in theatre confirms the implant is working before surgery ends.
  • Device programming and auditory-verbal therapy with audiologists and speech therapists afterwards.
Dr. Trisha Srivastava with a young patient in the ENT OPD

BAHA

Bone-anchored hearing aid

A small titanium implant behind the ear carries sound through the bone to the inner ear. It suits people born without an ear canal, people with chronically discharging ears, and people deaf in one ear. Usually a day-care procedure.

Stapedotomy

For otosclerosis

In otosclerosis the smallest bone in the body, the stapes, becomes stuck. A tiny opening and a micro-piston let sound pass again, often bringing hearing close to normal.

Urgent

Sudden hearing loss

Hearing that drops suddenly in one ear, often noticed on waking, is an emergency. See an ENT doctor within days, not weeks. Early treatment gives the best chance of recovery.

Pulsatile tinnitus · Times of India, 6 January 2026

When the sound in your ear keeps time with your heartbeat

Pulsatile tinnitus is a rhythmic whooshing or humming that matches the pulse. Unlike ordinary ringing in the ears, it often has a physical cause that a careful scan can find.

A 35-year-old woman had lived with this sound for four years. It kept her awake, and several consultations had not found the cause. Dr. Srivastava's team found a defect in the bone covering the sigmoid sinus, a large vein behind the ear, and rebuilt that wall in a three-hour operation. The noise stopped after surgery and her sleep improved over the following weeks.

“Many patients are told to live with the condition, but pulsatile tinnitus often has a treatable cause.”
Dr. Trisha Srivastava to the Times of India
Read the news report
Dr. Trisha Srivastava presenting on sigmoid sinus anomalies at ISOCON 2026, Amritsar

How the operation works

  1. OpeningA small opening is made in the bone behind the ear.
  2. Finding the defectThe thin or missing patch of bone over the vein is located.
  3. RebuildingThe wall is rebuilt with layers of tissue and bone cement.
  4. Going homeMost patients stay one night and go home the next day.

Presented to otologists

She presented her work on sigmoid sinus anomalies and their three surgical types at ISOCON 2026, the national conference of the Indian Society of Otology, in Amritsar.

Dr. Trisha Srivastava speaking at the ISOCON 2026 podium

Have a hearing test or scan?

Email it for an opinion on what can be done, or call the ENT coordinator.

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