Ischaemic or Haemorrhagic: Why the Type of Stroke Shapes Treatment and Recovery

Every year on 29 October, World Stroke Day reminds the public that a stroke is a medical emergency in which minutes count. Less widely understood is that “stroke” is not one condition but two very different events. In one, a blood vessel supplying the brain becomes blocked; in the other, a vessel bursts and bleeds into or around the brain. Which of the two has occurred decides almost everything that follows, from the first treatment in the emergency department to the shape of rehabilitation months later.

Two kinds of stroke, two kinds of damage

Blockages are by far the more common cause. Figures from the World Stroke Organization show that more than 62% of all new strokes worldwide are ischaemic, meaning a clot or narrowing cuts off the blood supply to part of the brain (Feigin et al., 2022). The remainder are haemorrhagic: bleeding inside the brain tissue itself, known as intracerebral haemorrhage, or bleeding into the space surrounding the brain.

The symptoms can look identical. Sudden one-sided weakness, a drooping face, slurred speech or loss of vision may appear in both. That is why a brain scan, usually CT or MRI, is the first essential step in hospital. Treatment that helps one type can be dangerous in the other.

Treating a blocked vessel

When imaging confirms an ischaemic stroke, the priority is to restore blood flow as fast as possible. Guidelines from the American Heart Association and American Stroke Association describe two main options (Powers et al., 2019). Clot-dissolving medication given into a vein can improve outcomes in suitable patients when it is started within four and a half hours of the first symptoms. For large clots in major arteries, a specialist can remove the blockage with a catheter, a procedure called mechanical thrombectomy, which in carefully selected patients may still be performed up to 24 hours after onset.

Both treatments depend on speed. Every minute without blood flow costs brain cells, which is why public campaigns urge people to call emergency services at the first sign of a stroke rather than waiting to see whether symptoms pass.

Treating a bleed

A haemorrhagic stroke calls for the opposite approach. Clot-dissolving drugs are ruled out, and the focus shifts to limiting the bleeding and the pressure it creates inside the skull. Doctors typically work to bring down high blood pressure, reverse the effect of any blood-thinning medication and monitor the patient closely in intensive care. In some cases neurosurgeons remove the collected blood or relieve pressure on the brain.

Patients who survive a large bleed are often severely affected in the first weeks. Many spend time on a ventilator, and some are not yet fully awake when the acute danger has passed.

Where the paths meet again: rehabilitation

Once the emergency phase is over, the two types of stroke converge on a shared need. Whether the damage was caused by a clot or a bleed, the brain must now relearn movement, speech, swallowing and the countless small skills of daily life. The starting point differs, however. People recovering from a severe haemorrhage frequently need a longer period of intensive early rehabilitation, with close medical supervision, before they can move on to more active therapy.

Germany organises this journey in a series of stages, starting in intensive care and continuing through early rehabilitation until patients regain independence at home and at work. Providers that cover every stage allow a patient to remain with one team for the whole route, rather than being transferred between institutions as their condition changes.

A family business built on persistence

Kliniken Schmieder is one such provider. Founded in 1950 by the neurologist Prof. Dr. Friedrich Schmieder in a former castle at Gailingen on the Rhine, the group was built on his then-unusual conviction that intensive therapy could help people recover lost abilities even long after brain damage. Departments for neurosurgery and radiology were added as early as 1961, and an early-rehabilitation unit for the most severely affected patients opened at Allensbach on Lake Constance in 1991.

Still owned by the founding family, the group now runs six hospitals across Baden-Württemberg and treats some 14,500 people a year covering the full sequence of rehabilitation phases, from A up to D/E. Its motto, “Nie aufgeben!” or “Never give up!”, reflects the founder’s outlook. Families can find out more about rehabilitation after ischaemic and haemorrhagic stroke at the group’s hospitals, where a team for international patients works in English, Arabic and Russian.

Knowing the difference matters

For the public, the most important message of World Stroke Day stays the same: act fast and call for help. Understanding that there are two kinds of stroke explains why hospitals scan before they treat, why the first days can look so different from one patient to the next, and why recovery is planned around the individual. Anyone affected should talk through treatment and rehabilitation options with their own medical team.

Sources

1. Feigin VL, et al. World Stroke Organization (WSO): Global Stroke Fact Sheet 2022. International Journal of Stroke, 2022.
2. Powers WJ, et al. Guidelines for the Early Management of Patients With Acute Ischemic Stroke: 2019 Update to the 2018 Guidelines. Stroke, 2019.