What do systematic reviews say?

Induced hypertension vs placebo or no intervention

It is very uncertain whether induced hypertension changes death from all causes (primary outcome) compared with placebo or no intervention (very low certainty).

• Interventions for altering blood pressure in people with acute subarachnoid haemorrhage 2021 · Cochrane Headline outcomes only
  RR 1.6 [0.57, 4.42]
  2 studies · 61 participants
  Very low

Induced hypertension vs placebo or no intervention

It is very uncertain whether induced hypertension changes death or dependency (primary outcome) compared with placebo or no intervention (very low certainty).

• Interventions for altering blood pressure in people with acute subarachnoid haemorrhage 2021 · Cochrane Headline outcomes only
  RR 1.29 [0.78, 2.13]
  2 studies · 61 participants
  Very low

Induced hypertension vs placebo or no intervention

It is very uncertain whether induced hypertension changes proportion of participants with ≥ 1 serious adverse events compared with placebo or no intervention (very low certainty).

• Interventions for altering blood pressure in people with acute subarachnoid haemorrhage 2021 · Cochrane Headline outcomes only
  RR 2.24 [1.01, 4.99]
  2 studies · 61 participants
  Very low

Induced hypertension vs placebo or no intervention

• Interventions for altering blood pressure in people with acute subarachnoid haemorrhage 2021 · Cochrane Headline outcomes only
  no estimate extracted
  1 study · 20 participants
  Very low

Induced hypertension vs placebo or no intervention

• Interventions for altering blood pressure in people with acute subarachnoid haemorrhage 2021 · Cochrane Headline outcomes only
  no estimate extracted
  1 study · 41 participants
  Very low

Induced hypertension vs placebo or no intervention

It is very uncertain whether induced hypertension changes delayed cerebral ischaemia compared with placebo or no intervention (very low certainty).

• Interventions for altering blood pressure in people with acute subarachnoid haemorrhage 2021 · Cochrane Headline outcomes only
  RR 0.33 [0.02, 7.32]
  1 study · 20 participants
  Very low

Induced hypertension vs placebo or no intervention

The review found no eligible studies for this question.

• Interventions for altering blood pressure in people with acute subarachnoid haemorrhage 2021 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found