I60.51

Clinical Causes: Rupture of an aneurysm in the right vertebral artery Vessel abnormalities such as arteriovenous malformations Degeneration of blood vessel walls due to hypertension Infections affecting cerebral arteries Congenital vessel defects Certain genetic disorders that weaken blood vessel walls

Key Symptoms: Sudden and severe headache, often described as 'the worst headache of my life' Neck stiffness and pain Nausea and vomiting Sensitivity to light (photophobia) Loss of consciousness or fainting episodes Seizures Sudden visual disturbances Weakness or numbness on one side of the body Difficulty speaking or understanding speech

Diagnosis Path: Diagnosing a nontraumatic subarachnoid hemorrhage involves several steps: - **Medical history and physical examination**: To gauge neurological status and identify risk factors. - **Imaging tests**: - *Computed Tomography (CT) scan*: Often the initial test to detect bleeding. - *Magnetic Resonance Imaging (MRI)*: Provides detailed images of brain structures. - *Cerebral Angiography*: An essential procedure to visualize blood vessels and pinpoint the bleeding source, such as the right vertebral artery. - **Laboratory Tests**: Blood tests may be performed to assess overall health and identify underlying causes. Prompt diagnosis is crucial for effective treatment planning and to reduce the risk of complications.

Treatment Protocols: Treatment strategies focus on controlling bleeding, preventing rebleeding, and addressing the underlying cause: - **Emergency management**: - Stabilization of vital signs - Management of increased intracranial pressure - Pain control and sedation - **Medical therapy**: - Medications to lower blood pressure - Drugs to prevent vasospasm (narrowing of blood vessels) - **Surgical interventions**: - *Endovascular coiling*: Minimally invasive procedure to seal the aneurysm - *Surgical clipping*: Removing or sealing the affected segment of the artery - **Supportive care**: - Intensive neurological monitoring - Physical therapy and rehabilitation post-stabilization Long-term management includes monitoring for complications like vasospasm and hydrocephalus, as well as addressing risk factors such as hypertension to reduce the chance of recurrence.