Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

54 questions · 55 findings · 7 reviews · Anaesthesia

No studies found 18 · 32.7%GRADE not reported 4 · 7.3%Very low 11 · 20%Low 9 · 16.4%Moderate 8 · 14.5%High 5 · 9.1%

Aromatherapy vs placebo

Nausea duration (nausea‐free at end of treatment) Measured by participant self‐report or medical or nursing observation · adults and children having any type of surgical procedure under general anaesthesia, regional anaesthesia or sedation, as hospital…

It is very uncertain whether aromatherapy changes nausea duration (nausea‐free at end of treatment) Assessed by… compared with placebo (very low certainty).

1 finding from 1 review

Aromatherapy vs placebo

Rescue antiemetic · adults and children having any type of surgical procedure under general anaesthesia, regional anaesthesia or sedation, as hospital…

Aromatherapy may leads to lower proportion requiring rescue antiemetics Assessed by numbers of… compared with placebo (low certainty).

1 finding from 1 review

Aromatherapy vs placebo

Adverse events (common reactions to aromatherapy include skin rashes, dyspnoea, headache, cardiac arrhythmias, hypotension, hypertension or dizziness) · adults and children having any type of surgical procedure under general anaesthesia, regional anaesthesia or sedation, as hospital…

The review found no eligible studies for this question.

1 finding from 1 review

Aromatherapy vs placebo

Patient satisfaction with treatment Measured by a validated scale · adults and children having any type of surgical procedure under general anaesthesia, regional anaesthesia or sedation, as hospital…

The review found no eligible studies for this question.

1 finding from 1 review

Peppermint vs placebo

Nausea duration (nausea‐free at end of treatment) Measured by participant self‐report or medical or nursing observation · adults and children having any type of surgical procedure under general anaesthesia, regional anaesthesia or sedation, as hospital…

The review found no eligible studies for this question.

1 finding from 1 review

Peppermint vs placebo

Adverse events (common reactions to aromatherapy include skin rashes, dyspnoea, headache, cardiac arrhythmias, hypotension, hypertension or dizziness) · adults and children having any type of surgical procedure under general anaesthesia, regional anaesthesia or sedation, as hospital…

The review found no eligible studies for this question.

1 finding from 1 review

Intervention not reported

Persistent pain 3 to 8 months after caesarean section (We defined persistent postsurgical pain as new pain that did not exist before the operation, measured using differences in scores based on validated pain scales; patient interview between 3 to... · women after caesarean section

The intervention probably leads to lower persistent pain 3 to 8 months after caesarean section (We defined… (moderate certainty).

1 finding from 1 review

Intervention not reported

Persistent pain 3 to 55 months after iliac crest bone graft harvesting (We defined persistent postsurgical pain as new pain that did not exist before the operation, measured using differences in scores based on validated pain scales; patient inter... · people after iliac crest bone graft harvesting

The intervention showed no clear difference in persistent pain 3 to 55 months after iliac crest bone graft… (low certainty).

1 finding from 1 review

Intervention not reported

Persistent pain 3 to 6 months after breast cancer surgery (We defined persistent postsurgical pain as new pain that did not exist before the operation, measured using differences in scores based on validated pain scales; patient interview between ... · women with breast cancer undergoing elective surgery

The intervention probably leads to lower persistent pain 3 to 6 months after breast cancer surgery (We… (moderate certainty).

1 finding from 1 review