Cochrane · systematic review · CD005007

Hyperbaric oxygenation for tumour sensitisation to radiotherapy

Bennett, MH, Feldmeier, J, Smee, R, et al. · Cochrane Database of Systematic Reviews · 2018 · Cochrane Library

SoF tableOnly the outcomes this review put in its Summary of Findings table are listed (the Cochrane Handbook caps them at about seven per comparison). Its other analyses are not shown here.
Questions
18
current version
GRADE rated
12
No studies
6
Included studies
NR
No studies 6 · 33.3%Ungraded 0 · 0%Very low 0 · 0%Low 0 · 0%Moderate 4 · 22.2%High 8 · 44.4%

Ungraded means an effect was reported without a GRADE rating; it is not a gap. No studies means the review found nothing to answer the question. The six categories are a display order, not a score.

Questions and results

Hyperbaric oxygen versus air breathing to enhance the effectiveness of radiotherapy for tumours of the head and neck

Population: People undergoing radiation therapy for head and neck cancer
6 questions
OutcomeEffectEvidenceStatus / GRADE
Mortality
Hyperbaric oxygen vs air breathing to enhance the effectiveness of radiotherapy
RR 0.83 [0.7, 0.98]9 studies · 710 participantsHigh
Failure of local tumour control (local control)
Hyperbaric oxygen vs air breathing to enhance the effectiveness of radiotherapy
RR 0.58 [0.39, 0.85]4 studies · 446 participantsModerate
Downgraded: imprecision
Local recurrence (recurrence )
Hyperbaric oxygen vs air breathing to enhance the effectiveness of radiotherapy
RR 0.66 [0.56, 0.78]5 studies · 582 participantsHigh
Metastasis
Hyperbaric oxygen vs air breathing to enhance the effectiveness of radiotherapy
RR 0.45 [0.09, 2.3]1 study · 50 participantsModerate
Downgraded: imprecision
Quality of life ‐ not reported
Hyperbaric oxygen vs air breathing to enhance the effectiveness of radiotherapy
no estimate extractedNRNo studies
Adverse effects
Hyperbaric oxygen vs air breathing to enhance the effectiveness of radiotherapy
RR 2.64 [1.65, 4.23]4 studies · 323 participantsModerate
Downgraded: imprecision

Hyperbaric oxygen compared to air breathing for enhancing the effect of radiation for cancer of the uterine cervix

Population: People undergoing radiotherapy for uterine cervical cancer
6 questions
OutcomeEffectEvidenceStatus / GRADE
Mortality
Hyperbaric oxygen vs air breathing
RR 0.88 [0.69, 1.11]4 studies · 728 participantsHigh
Failure of local tumour control ‐ not reported
Hyperbaric oxygen vs air breathing
no estimate extractedNRNo studies
Local recurrence (recurrence)
Hyperbaric oxygen vs air breathing
RR 0.82 [0.63, 1.06]3 studies · 714 participantsHigh
Metastasis
Hyperbaric oxygen vs air breathing
RR 1.05 [0.84, 1.31]3 studies · 520 participantsHigh
Quality of life ‐ not reported
Hyperbaric oxygen vs air breathing
no estimate extractedNRNo studies
Adverse effects
Hyperbaric oxygen vs air breathing
RR 2.05 [1.22, 3.46]3 studies · 456 participantsHigh

Hyperbaric oxygen compared to air breathing for enhancing the effect of radiotherapy for a mixed group of cancers (urinary bladder, lung, rectum, oesophagus, brain)

Population: People with any one of a mixed group of cancers
6 questions
OutcomeEffectEvidenceStatus / GRADE
Mortality with urinary bladder cancer
Hyperbaric oxygen vs air breathing
RR 0.97 [0.74, 1.27]4 studies · 330 participantsHigh
Failure of local tumour control ‐ not reported
Hyperbaric oxygen vs air breathing
no estimate extractedNRNo studies
Local recurrence ‐ not reported
Hyperbaric oxygen vs air breathing
no estimate extractedNRNo studies
Metastases with urinary bladder cancer
Hyperbaric oxygen vs air breathing
RR 2 [0.58, 6.91]2 studies · 80 participantsModerate
Downgraded: imprecision
Quality of life ‐ not reported
Hyperbaric oxygen vs air breathing
no estimate extractedNRNo studies
Adverse effects
Hyperbaric oxygen vs air breathing
RR 2.35 [1.66, 3.33]7 studies · 779 participantsHigh