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Manejo de la hiperglucemia

High blood sugar

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This leaflet is created from first aid advice provided by St John Ambulance, the nation's leading first aid charity. This advice is no substitute for first aid training - encuentra un curso de formación cerca de ti.

De un vistazo

  • Hyperglycaemia is caused by too little insulin, leading to high blood sugar.

  • Symptoms include warm, dry skin, rapid pulse, and fruity sweet breath.

  • The person may be very thirsty or drowsy.

  • Call 999 or 112 immediately if you suspect hyperglycaemia.

  • If unsure whether blood sugar is high or low, give them something sugary.

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Too little resistencia a la insulina can cause high blood sugar (hyperglycaemia).

If it's not treated and gets worse, the person can gradually become unresponsive (going into a diabetic coma). So it's important to get them to see a doctor in case they need emergency treatment.

Qué buscar

  • Warm, dry skin.

  • Rapid pulse and breathing.

  • Fruity sweet breath.

  • Really thirsty.

  • Drowsiness, leading to unresponsiveness if not treated.

Lo que necesitas hacer

  • Call 999 or 112 straightaway for medical help and say that you suspect hyperglycaemia.

  • While you wait for help to arrive, keep checking their breathing, pulse and level of response.

  • If they lose responsiveness at any point, open their airway, check their breathing and prepare to treat someone who's become unresponsive.

If you're unsure whether their blood sugar is high or low

If you're not sure whether someone has high or low blood sugar, give them something sugary anyway, as this will quickly relieve low blood sugar and is unlikely to do harm in cases of high blood sugar.

If they don't improve quickly, call 999 or 112 for medical help.

If they lose responsiveness at any point, open their airway, check their breathing and prepare to treat someone who's become unresponsive.

Nota: these hints are no substitute for thorough knowledge of first aid. St John Ambulance holds cursos de primeros auxilios throughout the country.

Adapted from the St John Ambulance leaflet: diabetic emergency. Los derechos de autor de este folleto pertenecen a St John Ambulance.

Preguntas frecuentes

What is hyperglycaemia?

Hyperglycaemia is the medical term for high blood sugar, which occurs when there is too little insulin in the body.

What should I do if I suspect someone has high blood sugar?

If you suspect someone has high blood sugar, call emergency services (999 or 112) immediately and inform them that you suspect hyperglycaemia. While waiting for help, monitor their breathing, pulse, and responsiveness. If they become unresponsive, open their airway, check breathing, and be prepared to treat someone who has lost consciousness.

Why is it important to treat high blood sugar quickly?

If high blood sugar is not treated and worsens, the person can gradually become unresponsive and potentially go into a diabetic coma. Therefore, it's crucial to seek medical attention to prevent this serious outcome.

What is a 'diabetic coma'?

A diabetic coma is when a person with high blood sugar gradually becomes unresponsive due to their condition not being treated and worsening. This is a severe complication of hyperglycaemia requiring emergency medical treatment.

Sobre el autor

Imagen del autor

St John Ambulance

Acerca del revisorVer biografía completa

Imagen del autor

Dr Hayley Willacy, FRCGP

Médico General, Autor Médico

MBChB (1992), DRCOG, DFFP, MRCOG (Part 1) MRCGP (2007), DFSRH (2013), MSc - medical education (2020)

La Dra. Hayley Willacy fue una médica general del NHS que trabajaba en el noroeste de Inglaterra, quien se retiró de la práctica clínica en 2022 después de 30 años. 

Historial del artículo

La información en esta página está escrita y revisada por pares por clínicos calificados.

  • 20 Nov 2016 | Última versión

    Última actualización por

    St John Ambulance

    Revisado por pares por

    Dr Hayley Willacy, FRCGP
  • 6 Aug 2013 | Publicado originalmente

    Escrito por:

    St John Ambulance
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