Senior Consultant, ENT Surgery, Artemis Hospitals, Gurgaon, India
Part 5 of 11 in Cochlear Implants in Children: From Candidacy to Classroom Success
Developmental Milestones and Red Flags Every Clinician Should Know
March 1, 2026
Not every child is born where formal hearing tests are available, and Dr. Bajwa's masterclass devotes real time to the milestones a family or a primary physician can watch for without any equipment at all.
What to expect, by age
By 0 to 3 months, an infant should show general awareness of sound, along with a startle or blink reflex to loud noise, and should stop suckling in response to a sudden sound. By 3 to 6 months, the child should begin localizing sound with the eyes and start babbling non-meaningful sounds such as mama-mama or gaga-gaga. By 6 to 9 months, the child should respond to simple words like no or bye. By 12 months, the child should respond to being called by name.
The signs that should trigger a referral
Red flags include an absent startle reflex, no babbling by six months, no single words by twelve months, and heavy reliance on visual cues or lip-reading. In older children, inattentiveness in class or a regression in speech that had previously developed are equally significant. Dr. Bajwa is unambiguous on one point: parental concern should never be dismissed. If a parent raises it, the child should be referred for an ENT evaluation.
This guide is based on a live Jivo Masterclass — Dr. Dilpreet Bajwa taught doctors across Africa on March 1, 2026.
FROM THE LIVE Q&A
Dr. Gozi Ogu
Will it be useful for adults with hearing loss due to cancer such as chronic myeloid leukemia?
Dr. Dilpreet Bajwa
Absolutely. Chronic myeloid leukemia and even chronic kidney disease are not contraindications, because CML is an indolent, slow-moving disease. As long as the patient is medically stable and vaccinated beforehand, implantation can significantly improve their social interaction and quality of life.
Book a Consultation with Dr. Dilpreet Bajwa
Book on WhatsAppOr message us on WhatsApp: +91 98182 98669
Frequently Asked Questions
For international patients, for example from an African country, how is long-term follow-up and device calibration handled if there is a local shortage of professionals?▼
Programming is now available online because most modern devices have built-in Bluetooth. An audiologist can connect through an app on a laptop or phone and wirelessly program or calibrate the device remotely, in much the same way as this Zoom masterclass, without the patient needing to travel back.
Regarding affordability, what does the surgery and device cost, and is it covered by insurance?▼
In India, cochlear implants are not covered by insurance, and the device is expensive, so CSR funds and government programs are used to support Indian families. Nothing equivalent currently exists for international patients. Paid out of pocket, surgery including the device starts at around 14,000 US dollars and can go up to 36,000 US dollars for high-end models, with cost driven mainly by MRI-compatible magnet strength, auto-programming that adjusts to noise every few seconds, and built-in Bluetooth.
If technology keeps changing, does the internal implant become a limiting factor over time?▼
No. Implant companies design the internal device to stay compatible even as external technology advances. The first person implanted with a cochlear device, in 1984, is still using that original internal component 42 years later, having only upgraded the external processor along the way.
What is the lifespan of the cochlear implant? Does it need to be replaced at any stage?▼
The internal device is designed to last a lifetime and does not normally require replacement, barring a major accident. The external processor is upgradeable and generally lasts 5 to 7 years, and patients tend to upgrade whenever a company introduces new technology, such as AI-based features.
Can the implant be done for those who have hearing loss at a later age, in adulthood?▼
Yes, and adult implantation is increasingly common. Someone with progressive hearing loss who already developed language accepts a cochlear implant beautifully, with no contraindication. If a person was born deaf and is now 40, an implant is still possible, but the chance of developing meaningful speech is questionable, unlike someone who lost hearing after already learning to speak.
What hearing milestones should a baby reach by 3 months?▼
By 0 to 3 months, an infant should show general awareness of sound, along with a startle or blink reflex to loud noise, and should stop suckling in response to a sudden sound.
When should a baby start babbling and responding to their name?▼
By 3 to 6 months, a child should begin localizing sound with the eyes and start babbling non-meaningful sounds such as mama-mama or gaga-gaga. By 6 to 9 months, the child should respond to simple words like no or bye, and by 12 months, respond to being called by name.
What are the red flags that should trigger a hearing referral?▼
An absent startle reflex, no babbling by six months, no single words by twelve months, and heavy reliance on visual cues or lip-reading. In older children, inattentiveness in class or a regression in previously developed speech are equally significant.
Should a parent's concern about a child's hearing be taken seriously on its own?▼
Yes. Parental concern should never be dismissed. If a parent raises it, the child should be referred for an ENT evaluation.
In This Series: Cochlear Implants in Children: From Candidacy to Classroom Success
- 1.Cochlear Implants in Children
- 2.The Silent Disability: Why Pediatric Hearing Loss Goes Undiagnosed
- 3.How Hearing Works: Anatomy, Sound and the Audiogram
- 4.The 1-3-6 Rule: Building a Newborn Hearing Screening Program
- 5.Developmental Milestones and Red Flags Every Clinician Should Know
- 6.Cochlear Implant Candidacy: Who Qualifies and Why Timing Matters
- 7.Inside Cochlear Implant Surgery: Procedure, Risks and Pre-Op Vaccination
- 8.From Switch-On to Classroom: Rehabilitation and Auditory-Verbal Therapy
- 9.Cochlear Implants Beyond Childhood: Candidacy in Teens, Adults and Age-Related Hearing Loss
- 10.The Real Cost of Hearing: Device Tiers, Technology and Cross-Border Care
- 11.Closing the Gap: The Global Burden of Preventable Hearing Loss