{"success":true,"version":"v1","request":{"tool":"get_calculator_schema","calculator_id":"glasgow-coma-scale"},"result":{"entity_type":"calculator","id":"glasgow-coma-scale","calculator_id":"glasgow-coma-scale","canonical_url":"https://tttkmbb.com/medical/glasgow-coma-scale","name":"Glasgow Coma Scale Calculator","title":"Glasgow Coma Scale (GCS) Calculator – Eye, Verbal and Motor Responses with Severity Band","category":"medical","category_name":"Medical & Clinical","tool_name":"calculate_glasgow_coma_scale","featured_mcp_tool":false,"description":"Sums the Glasgow Coma Scale eye (1–4), verbal (1–5) and motor (1–6) responses into the 3–15 total, writes it in E/V/M notation and assigns the conventional head-injury severity band (13–15 mild, 9–12 moderate, 3–8 severe).","use_when":"You have the three observed best responses of a patient and need the GCS total, its E V M breakdown or the severity band used in trauma and neurosurgical communication.","do_not_use_when":"A component cannot be tested (intubation, swollen eyes, sedation): report the testable components individually with NT rather than a total; infants need a paediatric scale. Results are informational and not medical advice.","inputs":[{"name":"eye_response","label":"Eye opening (E)","type":"enum","required":true,"values":[{"value":"none","label":"1 – no eye opening","aliases":["1","none","no_response","no response"]},{"value":"to_pressure","label":"2 – opens to pressure (fingertip stimulus; 'to pain' in the 1974 wording)","aliases":["2","to_pressure","to pressure","to_pain","to pain","pain","pressure"]},{"value":"to_sound","label":"3 – opens to sound (spoken or shouted request; 'to speech')","aliases":["3","to_sound","to sound","to_speech","to speech","to_voice","to voice","speech","sound","voice"]},{"value":"spontaneous","label":"4 – opens spontaneously","aliases":["4","spontaneous","spontaneously","open"]}],"description":"Best eye response: none = 1, to_pressure = 2, to_sound = 3, spontaneous = 4.","example":"spontaneous"},{"name":"verbal_response","label":"Verbal response (V)","type":"enum","required":true,"values":[{"value":"none","label":"1 – no verbal response","aliases":["1","none","no_response","no response"]},{"value":"sounds","label":"2 – sounds only, no words (incomprehensible)","aliases":["2","sounds","incomprehensible","incomprehensible_sounds","incomprehensible sounds","moans"]},{"value":"words","label":"3 – single words, not a conversation (inappropriate words)","aliases":["3","words","inappropriate","inappropriate_words","inappropriate words"]},{"value":"confused","label":"4 – confused conversation","aliases":["4","confused","confused_conversation","confused conversation"]},{"value":"orientated","label":"5 – orientated to person, place and time","aliases":["5","orientated","oriented","orientated_conversation","orientated conversation","normal"]}],"description":"Best verbal response: none = 1, sounds = 2, words = 3, confused = 4, orientated = 5.","example":"orientated"},{"name":"motor_response","label":"Motor response (M)","type":"enum","required":true,"values":[{"value":"none","label":"1 – no movement","aliases":["1","none","no_response","no response"]},{"value":"extension","label":"2 – extension to pressure (decerebrate)","aliases":["2","extension","decerebrate","extends","abnormal_extension","abnormal extension"]},{"value":"abnormal_flexion","label":"3 – abnormal flexion to pressure (decorticate)","aliases":["3","abnormal_flexion","abnormal flexion","decorticate","flexion_abnormal","flexion abnormal"]},{"value":"normal_flexion","label":"4 – normal flexion, withdrawal from pressure","aliases":["4","normal_flexion","normal flexion","withdrawal","withdraws","flexion_withdrawal","flexion withdrawal","flexion"]},{"value":"localising","label":"5 – localises to pressure","aliases":["5","localising","localizing","localises","localizes","localise","localize"]},{"value":"obeys_commands","label":"6 – obeys commands","aliases":["6","obeys_commands","obeys commands","obeys","commands","normal"]}],"description":"Best motor response: none = 1, extension = 2, abnormal_flexion = 3, normal_flexion = 4, localising = 5, obeys_commands = 6.","example":"obeys_commands"}],"outputs":[{"name":"gcs_total","label":"GCS total","type":"integer","decimals":4,"description":"E + V + M, 3–15."},{"name":"gcs_text","label":"GCS notation","type":"string","decimals":4,"description":"Component notation, e.g. E4V5M6 = 15."},{"name":"severity","label":"Severity band","type":"string","decimals":4,"description":"Mild 13–15, moderate 9–12, severe 3–8 (traumatic brain injury convention)."},{"name":"component_scores","label":"Component scores","type":"object","decimals":0,"description":"Eye, verbal and motor scores."}],"input_schema":{"type":"object","properties":{"eye_response":{"description":"Best eye response: none = 1, to_pressure = 2, to_sound = 3, spontaneous = 4.","type":"string","enum":["none","to_pressure","to_sound","spontaneous"],"examples":["spontaneous"]},"verbal_response":{"description":"Best verbal response: none = 1, sounds = 2, words = 3, confused = 4, orientated = 5.","type":"string","enum":["none","sounds","words","confused","orientated"],"examples":["orientated"]},"motor_response":{"description":"Best motor response: none = 1, extension = 2, abnormal_flexion = 3, normal_flexion = 4, localising = 5, obeys_commands = 6.","type":"string","enum":["none","extension","abnormal_flexion","normal_flexion","localising","obeys_commands"],"examples":["obeys_commands"]}},"additionalProperties":false,"required":["eye_response","verbal_response","motor_response"]},"output_schema":{"type":"object","properties":{"gcs_total":{"description":"E + V + M, 3–15.","type":"integer"},"gcs_text":{"description":"Component notation, e.g. E4V5M6 = 15.","type":"string"},"severity":{"description":"Mild 13–15, moderate 9–12, severe 3–8 (traumatic brain injury convention).","type":"string"},"component_scores":{"description":"Eye, verbal and motor scores.","type":"object"}}},"formula":"gcs_total = eye_response (1–4) + verbal_response (1–5) + motor_response (1–6); severity: 13–15 mild, 9–12 moderate, 3–8 severe","method":"Teasdale and Jennett's scale (1974) in its 15-point form (motor 1–6, 1976) with the 2014 revised response terminology from glasgowcomascale.org; the total is a communication shorthand and the three components, especially the motor score, carry more information than the sum. Results are informational only and not a substitute for clinical judgement or medical advice.","sources":[{"name":"Teasdale G, Jennett B (1974) Assessment of coma and impaired consciousness: a practical scale, Lancet 2:81-84","url":"https://pubmed.ncbi.nlm.nih.gov/4136544/","type":"peer_reviewed","retrieved_at":"2026-09-24"},{"name":"glasgowcomascale.org – The Glasgow structured approach to assessment of the Glasgow Coma Scale (Teasdale 2014 terminology)","url":"https://www.glasgowcomascale.org/","type":"reference","retrieved_at":"2026-09-24"}],"freshness":{"type":"static","max_age_seconds":null,"note":"Deterministic formula with fixed constants; results never go stale. Inputs supplied by the caller determine the output."},"examples":[{"name":"Spontaneous eye opening, orientated, obeys commands","inputs":{"eye_response":"spontaneous","verbal_response":"orientated","motor_response":"obeys_commands"},"expected":{"gcs_total":15,"gcs_text":"E4V5M6 = 15","severity":"Mild (13–15)","component_scores":{"eye":4,"verbal":5,"motor":6}},"url":"https://tttkmbb.com/api/v1/calculate/glasgow-coma-scale?eye_response=spontaneous&verbal_response=orientated&motor_response=obeys_commands"},{"name":"Eyes open to pressure, sounds only, normal flexion","inputs":{"eye_response":"to_pressure","verbal_response":"sounds","motor_response":"normal_flexion"},"expected":{"gcs_total":8,"gcs_text":"E2V2M4 = 8","severity":"Severe (3–8)"},"url":"https://tttkmbb.com/api/v1/calculate/glasgow-coma-scale?eye_response=to_pressure&verbal_response=sounds&motor_response=normal_flexion"}],"faq":[{"q":"Why is GCS 8 a threshold?","a":"A total of 8 or less is the conventional definition of coma and severe brain injury and a common prompt to consider airway protection; it is a guide, not a rule, and the trend matters more than one value."},{"q":"How are untestable components recorded?","a":"As NT for that component (for example E4 VT M6 in an intubated patient) without a total; scores must not be guessed. This calculator requires all three components."},{"q":"What changed in the 2014 terminology?","a":"Wording only: 'to pressure' replaced 'to pain', 'sounds' and 'words' replaced 'incomprehensible' and 'inappropriate', and 'normal/abnormal flexion' replaced 'withdrawal/decorticate'; the points are unchanged."}],"tags":["glasgow coma scale","gcs","level of consciousness","head injury severity","e4v5m6"],"related":[{"calculator_id":"apgar-score","reason":"Component-based newborn score."},{"calculator_id":"meld-score","reason":"Another clinical severity score."}],"links":{"html":"https://tttkmbb.com/medical/glasgow-coma-scale","markdown":"https://tttkmbb.com/medical/glasgow-coma-scale.md","json":"https://tttkmbb.com/medical/glasgow-coma-scale.json","api":"https://tttkmbb.com/api/v1/calculate/glasgow-coma-scale","schema":"https://tttkmbb.com/api/v1/calculators/glasgow-coma-scale","openapi":"https://tttkmbb.com/openapi.json","mcp":"https://tttkmbb.com/mcp"},"version":"v1","updated_at":"2026-09-24"},"timestamp":"2026-09-24T03:47:06Z","next_actions":[{"tool":"run_calculator","calculator_id":"glasgow-coma-scale","reason":"Run Glasgow Coma Scale Calculator with the inputs above."}],"links":{"markdown":"https://tttkmbb.com/medical/glasgow-coma-scale.md"}}