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Subarachnoid Hemorrhage

A subarachnoid hemorrhage (SAH) is sudden bleeding in the space around the brain, usually from a burst weak spot in a blood vessel or from head trauma. It is a life‑threatening emergency that often begins with a very sudden, extremely severe headache.​

1) What is this condition?

  • Blood leaks into the fluid‑filled space surrounding the brain, rather than staying inside the blood vessel where it belongs.​

  • The most common non‑trauma cause is a ruptured brain aneurysm (a ballooned weak spot in an artery).​

  • Symptoms often include “worst headache of life,” neck stiffness, nausea, vomiting, light sensitivity, confusion, or loss of consciousness.​

2) How serious is it?

  • SAH is very serious; about half of people die suddenly or before reaching the hospital.​

  • Among those who reach care, many survive, but there is a high risk of complications like re‑bleeding, vessel spasms, fluid buildup, and stroke.​

  • Long hospital stays, intensive monitoring, and long‑term rehab are often needed.​

3) Non‑surgical treatments

  • Emergency intensive care to stabilize breathing, blood pressure, and fluid balance, often in a neuro‑ICU.​

  • Medicines to:

    • Reduce the chance of vessel “spasms” that can cause strokes (e.g., nimodipine).​

    • Control pain, nausea, agitation, and prevent or treat seizures.​

    • Keep blood pressure in a careful target range (low enough to reduce re‑bleed risk, high enough to feed the brain).​

  • Managing complications such as fluid buildup (hydrocephalus), fever, high blood sugar, and blood clots in the legs.​

4) Types of surgery/procedures that may be needed

  • Aneurysm “clipping”: open brain surgery to place a tiny metal clip on the neck of the aneurysm, closing it off from blood flow.​

  • Aneurysm “coiling” or other endovascular treatments: threading a catheter from the groin or wrist into the brain artery and filling the aneurysm with coils or devices to seal it.​

  • Drain placement (external ventricular drain or shunt) if blood blocks fluid flow and causes pressure buildup.​

5) Goals of surgery vs non‑surgical care

  • Non‑surgical goals:

    • Stabilize the person, protect the brain from low oxygen, extreme blood pressure swings, and complications.​

    • Prevent or treat vessel spasms, hydrocephalus, seizures, and other problems that can worsen outcome.​

  • Surgery/endovascular goals:

    • Permanently seal the bleeding source (usually an aneurysm) to prevent another, often fatal, bleed.​

    • Relieve dangerous pressure or fluid buildup around the brain.​

6) How surgery can “fix” the problem

  • Clipping pinches off the base of the aneurysm so blood can no longer enter the weak ballooned area and leak.​

  • Coiling and similar catheter‑based methods fill the aneurysm with soft metal or devices so blood clots inside it and stops flowing into the bulge.​

  • Fluid drains let excess fluid and blood‑stained fluid out of the brain’s cavities, lowering pressure and protecting brain tissue.​

7) Risks of surgery (general and specific)

  • General risks: bleeding, infection, blood clots, and anesthesia problems.​

  • Specific risks:

    • For clipping: injury to nearby brain or vessels causing stroke, weakness, speech or vision problems.​

    • For coiling: incomplete sealing, device‑related clots, or later re‑bleeding if the aneurysm reopens.​

    • For drains: infection, blockage, over‑drainage, or long‑term need for a permanent shunt.​

8) Chances this surgery will work

  • Sealing the aneurysm (by clipping or coiling) greatly reduces the risk of another hemorrhage from that aneurysm.​

  • Large studies show similar overall functional results at around 3 months to 1 year for clipping and coiling, with some trials showing slightly better early outcomes with coiling but a bit higher late re‑bleed risk.​

  • Outcome still depends heavily on how sick the person was at arrival (grade), age, and complications.​

9) Possible complications from the surgery

  • Early: stroke from vessel spasm or procedure‑related clots, new or worsened weakness or speech issues, re‑bleeding during or soon after the procedure.​

  • Intermediate: hydrocephalus needing a permanent shunt, infections, seizures, or lung and heart issues from long ICU stays.​

  • Longer‑term: cognitive and mood changes, fatigue, headaches, and, rarely, delayed re‑bleeding from treated or new aneurysms.​

10) Typical recovery from the condition

  • Recovery is often slow and can continue for many months; most improvement happens in the first 6 months, but meaningful gains can still occur up to a year or more.​

  • Many survivors have some lasting issues with memory, speed of thinking, mood, or fatigue even if they look “normal” physically.​

  • Intensive rehabilitation (physical, occupational, speech, and cognitive therapy) improves walking, independence, and quality of life.​

11) Typical recovery after surgery

  • First days to weeks: care in neuro‑ICU with close monitoring for vessel spasms (often peaking days 3–14), fluid buildup, and re‑bleeding.​

  • After ICU: step‑down or regular ward stay focusing on gradually increasing movement, managing headaches, and beginning therapies.​

  • After discharge: many go to rehab hospitals or programs, working on strength, balance, daily tasks, and thinking skills over weeks to months.​

12) How long in the hospital

  • Typical stays are around 10–20 days, depending on severity and complications.​

  • More severe cases or those with many complications may need longer hospitalization and then inpatient rehab.​

13) Long‑term outlook

  • Overall, SAH has a high early death rate, but among those who survive to hospital and receive treatment, many eventually reach good independence.​

  • Studies show that more than half of survivors can achieve excellent or good function within 1–4 years, although some deficits may remain.​

  • Risk of another aneurysm rupture is reduced once the culprit aneurysm is treated, but controlling blood pressure and not smoking are crucial.​

14) Need for outpatient follow‑up

  • Regular visits with neurosurgery and stroke/brain specialists to monitor recovery, manage headaches, mood, and thinking changes, and check for seizures.​

  • Follow‑up imaging (CT/MRI and vessel imaging) to confirm the aneurysm is fully secured and to look for any new aneurysms or fluid buildup.​

  • Ongoing rehab, neuropsychological support, and counseling for both patient and family are often needed to address fatigue, emotional changes, and return to work or driving.

15) More info on neurosurgery conditions

  • For detailed information, ask your primary care physician if a referral to a neurosurgeon is advised.

  • As an established patient at Cerbo Clinic you may speak with Dr. Singel anytime to address your more specific questions.

  • Our “Brain & Spine Explained” youtube channel provides general information on neurosurgery conditions and treatments. Click the youtube button below to learn more.