The Ottawa Subarachnoid Hemorrhage Rule - Flowchart

The Ottawa Subarachnoid Hemorrhage Rule - Flowchart

The Ottawa Subarachnoid Hemorrhage Rule - Flowchart Subarachnoid Hemorrhage Subarachnoid Hemorrhage

«Flowchart»

OTTAWA SUBARACHNOID HEMORRHAGE RULE^*

OTTAWA SUBARACHNOID HEMORRHAGE RULE^*

OTTAWA SUBARACHNOID HEMORRHAGE RULE^*

^* *

Patient characteristics

Patient characteristics

Patient characteristics

Patients who are ≥15 years old and have a new severe atraumatic headache with maximum intensity within 1 hour.

Patients who are ≥15 years old and have a new severe atraumatic headache with maximum intensity within 1 hour.

Patients who are ≥15 years old and have a new severe atraumatic headache with maximum intensity within 1 hour.

≥

End

End

End

Age ≥40 years
Neck pain or stiffness
Witnessed loss of consciousness
Onset during exertion
Thunderclap headache (peaking pain within 1 second)
Limited neck flexion on examination

Age ≥40 years
Neck pain or stiffness
Witnessed loss of consciousness
Onset during exertion
Thunderclap headache (peaking pain within 1 second)
Limited neck flexion on examination

Age ≥40 years
Neck pain or stiffness
Witnessed loss of consciousness
Onset during exertion
Thunderclap headache (peaking pain within 1 second)
Limited neck flexion on examination

≥

All no
Probability of subarachnoid hemorrhage = 0

All no
Probability of subarachnoid hemorrhage = 0

All no
All no

Any yes
An evaluation for subarachnoid hemorrhage (see text) should be undertaken in a patient with one or more criteria

Any yes
An evaluation for subarachnoid hemorrhage (see text) should be undertaken in a patient with one or more criteria

Any yes
Any yes

^* Should not be used in patients with new neurologic deficits, a prior aneurysm, prior subarachnoid hemorrhage, known brain tumors, or chronic recurrent headaches.

^* Should not be used in patients with new neurologic deficits, a prior aneurysm, prior subarachnoid hemorrhage, known brain tumors, or chronic recurrent headaches.

^* Should not be used in patients with new neurologic deficits, a prior aneurysm, prior subarachnoid hemorrhage, known brain tumors, or chronic recurrent headaches.

^*