Why healthcare is different
Healthcare organizations communicate with people at stressful, vulnerable moments, and the information they share can affect decisions about someone’s body and safety. Video is used more and more for that communication: explainer clips in a waiting room, recorded instructions for after a procedure, remote appointments and training for staff. Subtitles and captions can make these videos usable by more people. They can also introduce risks if the text is wrong. This article gives a general view. It is not medical, legal or compliance advice.
Patient education video
Hospitals, clinics and public health bodies often produce short videos about conditions, medications, preparing for tests or caring for a wound at home. Captions help several groups.
- Patients who are deaf or hard of hearing, who may otherwise miss the content entirely.
- Patients who speak another language, who may follow translated text more easily than spoken words.
- Patients watching in waiting rooms or hospital wards, where sound is often off or competes with noise. This is an example of sound-off viewing in a real setting.
- Patients who are unwell, tired or anxious, who may take in written information more readily than speech, and who may want to rewatch and read at their own pace.
- Family members and carers who help a patient follow instructions.
Plain language matters as much as captions. A perfectly accurate caption of a confusing explanation does not make it easier to understand.
Telehealth
Remote appointments depend on being able to hear the clinician. A poor connection, a quiet voice or a patient’s hearing loss can all make a call difficult. Live captions during video meetings can help, but automatic captions make mistakes, especially with names of drugs, conditions and body parts. For this reason, clinicians generally should not rely on automatic captions alone for important instructions. Confirming key points in writing, repeating critical details aloud and asking the patient to say them back are common-sense steps. Where a patient needs communication support, the service should arrange an appropriate, qualified option and not assume that an automatic tool is enough. Privacy also matters, since a captioning tool may process sensitive audio. Questions about this are discussed under caption privacy.
Staff training video
Hospitals and care providers train staff on procedures, safety rules and equipment through recorded modules. Training videos must be accessible to employees who are deaf or hard of hearing, and captions also help staff who speak English as a second language and staff who watch on the ward with no headphones. Training often includes specialist vocabulary, so accurate captions are important, and a glossary for the caption writer reduces errors. Training material is also a long-lived asset, which makes it worth getting right once.
Accuracy: the central issue
In many sectors a caption error is annoying. In healthcare it can be harmful. A mistake in a dose, a unit, a negation (taking “do not” as “do”) or a drug name could lead someone to misunderstand an instruction. Some points to keep in mind:
- Automated subtitling is useful for drafts, but it is not error-free, and it often struggles with medical terminology.
- Important material should be checked by a qualified human reviewer, ideally one who knows the subject or has the help of a clinician.
- Numbers, dosages and names deserve a second check, as described in the discussion of names and terms.
- Translated captions need extra care, because a translation can be fluent and still wrong. Translation accuracy matters particularly for health content, and machine output should be reviewed before it reaches patients.
- When a video is updated because guidance changes, the captions must be updated too. Out-of-date text is easy to overlook.
What subtitles are not
Subtitles help many people take in information. They are not a treatment and do not by themselves improve health outcomes. They do not replace professional interpreters or communication support where a patient needs one, and they do not guarantee that a patient has understood. They are one tool within a broader approach to accessible communication.
Practical steps for organizations
- Decide which videos carry the most important or risky information and review those first.
- Build a short list of terms, drug names and abbreviations used in your material.
- Use automated tools for drafts if you wish, but assign a named reviewer.
- Test with real patients or staff where possible, including people who rely on captions.
- Keep a simple process for updating captions when videos change.
- Check privacy terms before sending recordings to an outside captioning tool.
Rules and expectations
Accessibility and communication duties for health services vary by country and change over time. Healthcare organizations should consult the relevant authority or a qualified professional about what applies to them. The aim of this article is to describe the general picture: text on screen can make health communication more inclusive, provided it is accurate, reviewed and used alongside other forms of support.