NBM means 'nil by mouth', that is, no food, drink, or medications should be taken orally. 

NBM is typically done pre-operatively to avoid aspiration risk.

Maintenance IV fluids should be prescribed.

A neuroendocrine tumour (NET) is a tumour that develops from cells of the neuroendocrine system. These cells are similar to nerve cells, but make hormones.

NETs can be benign or malignant, and functioning (hormone-producing) or non-functioning.

NETs typically affect the GI system or lungs.

Macmillan Cancer Support - NETs

The National Early Warning Score (NEWS) is a tool that was developed to improve the detection and response to clinical deterioration in adult patients. An updated version (NEWS2) was published in December 2017.

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The National Health Service (NHS) encompasses the four separate and independent public healthcare providers in the United Kingdom: the National Health Service in England, NHS Scotland, NHS Wales, and Health and Social Care in Northern Ireland.

NHS website

The National Institute for Health and Care Excellence (NICE) provides national guidance and advice to improve health and social care in the United Kingdom.

NICE website

Non-invasive ventilation (NIV) involves ventilatory support without an invasive artificial airway (endotracheal tube or tracheostomy tube), using a face or nasal mask or similar device.

The Nursing and Midwifery Council (NMC) is the regulator for nursing and midwifery professions in the UK.

NMC website

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The National Poisons Information Service (NPIS) is a national UK service providing expert advice on all aspects of acute and chronic poisoning.

TOXBASE® is the primary clinical toxicology database of the NPIS.

NSAIDs are non-steroidal anti-inflammatory drugs.