Cochrane Review Group

Anaesthesia

125 systematic reviews in Anaesthesia ask 1,463 questions. 13.5% have no studies to answer them, 21% rest on very low certainty evidence and 21.5% reach moderate or high certainty.

Reviews

125

Questions

1,463

current versions

No studies

13.5%

Moderate or high

21.5%

No studies 197 · 13.5%Ungraded 203 · 13.9%Very low 307 · 21%Low 441 · 30.1%Moderate 245 · 16.7%High 70 · 4.8%

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.

Search questions in Anaesthesia

Thinnest evidence

All no studies and very low questions

Question	Effect	Evidence	Status / GRADE
Summary of findings ‐ Erector spinae plane block vs intercostal nerve block Mean difference in postoperative pain intensity at rest 24 hours postoperatively (VAS 0 to 10) · adults undergoing surgery with general anaesthesia Erector spinae plane block for postoperative pain (2024) · Cochrane	no estimate extracted	2 studies · 131 participants	Very low
Summary of findings ‐ Erector spinae plane block vs intercostal nerve block Rates of block‐related adverse events · adults undergoing surgery with general anaesthesia Erector spinae plane block for postoperative pain (2024) · Cochrane	RR 0.09 [0.04, 2.28]	3 studies · 181 participants	Very low
Summary of findings ‐ Erector spinae plane block vs epidural analgesia Mean difference in postoperative pain intensity at rest 24 hours postoperatively (VAS 0 to 10) · adults undergoing surgery with general anaesthesia Erector spinae plane block for postoperative pain (2024) · Cochrane	no estimate extracted	2 studies · 81 participants	Very low
Hyperangulated videolaryngoscopy vs direct laryngoscopy Dental trauma · adults undergoing tracheal intubation Videolaryngoscopy versus direct laryngoscopy for adults undergoing tracheal intubation (2022) · Cochrane	RR 0.51 [0.16, 1.59]	30 studies · 3497 participants	Very low
Hyperangulated videolaryngoscopy vs direct laryngoscopy Time for tracheal intubation · adults undergoing tracheal intubation Videolaryngoscopy versus direct laryngoscopy for adults undergoing tracheal intubation (2022) · Cochrane	no estimate extracted	59 studies · 6644 participants	Very low
Channelled videolaryngoscopy vs direct laryngoscopy Successful first attempt · adults undergoing tracheal intubation Videolaryngoscopy versus direct laryngoscopy for adults undergoing tracheal intubation (2022) · Cochrane	RR 1.1 [1.05, 1.15]	47 studies · 5210 participants	Very low
Channelled videolaryngoscopy vs direct laryngoscopy Dental trauma · adults undergoing tracheal intubation Videolaryngoscopy versus direct laryngoscopy for adults undergoing tracheal intubation (2022) · Cochrane	RR 0.52 [0.13, 2.12]	29 studies · 2375 participants	Very low
Channelled videolaryngoscopy vs direct laryngoscopy Time for tracheal intubation · adults undergoing tracheal intubation Videolaryngoscopy versus direct laryngoscopy for adults undergoing tracheal intubation (2022) · Cochrane	no estimate extracted	57 studies · 5676 participants	Very low
Macintosh‐style videolaryngoscopy vs direct laryngoscopy Dental trauma · adults undergoing tracheal intubation Videolaryngoscopy versus direct laryngoscopy for adults undergoing tracheal intubation (2022) · Cochrane	RR 0.68 [0.16, 2.89]	18 studies · 2297 participants	Very low
Macintosh‐style videolaryngoscopy vs direct laryngoscopy Time for tracheal intubation · adults undergoing tracheal intubation Videolaryngoscopy versus direct laryngoscopy for adults undergoing tracheal intubation (2022) · Cochrane	no estimate extracted	35 studies · 4061 participants	Very low
Intervention NR Time to first analgesic request (mean time in minutes) · adults undergoing surgery Pre‐emptive and preventive NSAIDs for postoperative pain in adults undergoing all types of surgery (2021) · Cochrane	no estimate extracted	8 studies · 410 participants	Very low
Intervention NR Adverse events · adults undergoing surgery Pre‐emptive and preventive NSAIDs for postoperative pain in adults undergoing all types of surgery (2021) · Cochrane	no estimate extracted	NR	No studies

Reviews 125

Erector spinae plane block for postoperative pain

Oostvogels, L, Weibel, S, et al. · Cochrane Database of Systematic Reviews · 2024

Anaesthesia

Thinnest evidence

Reviews 125

Erector spinae plane block for postoperative pain

Automated mandatory bolus versus basal infusion for maintenance of epidural analgesia in labour

Videolaryngoscopy versus direct laryngoscopy for adults undergoing tracheal intubation

Pre‐emptive and preventive NSAIDs for postoperative pain in adults undergoing all types of surgery

Peripheral nerve blocks for hip fractures in adults

Topical anaesthesia plus intracameral lidocaine versus topical anaesthesia alone for phacoemulsification cataract surgery in adults

Melatonin for preoperative and postoperative anxiety in adults

Erythropoietin plus iron versus control treatment including placebo or iron for preoperative anaemic adults undergoing non‐cardiac surgery

Drugs for preventing postoperative nausea and vomiting in adults after general anaesthesia: a network meta‐analysis

Transient neurological symptoms (TNS) following spinal anaesthesia with lidocaine versus other local anaesthetics in adult surgical patients: a network meta‐analysis

Bispectral index for improving intraoperative awareness and early postoperative recovery in adults

Epidural analgesia for adults undergoing cardiac surgery with or without cardiopulmonary bypass

The use of ultrasound guidance for perioperative neuraxial and peripheral nerve blocks in children

Pharmacological interventions for the prevention of acute postoperative pain in adults following brain surgery

Supplemental perioperative intravenous crystalloids for postoperative nausea and vomiting

Adductor canal blocks for postoperative pain treatment in adults undergoing knee surgery

Perioperative restrictive versus goal‐directed fluid therapy for adults undergoing major non‐cardiac surgery

Postoperative epidural analgesia versus systemic analgesia for thoraco‐lumbar spine surgery in children

Perioperative beta‐blockers for preventing surgery‐related mortality and morbidity in adults undergoing cardiac surgery

Perioperative beta‐blockers for preventing surgery‐related mortality and morbidity in adults undergoing non‐cardiac surgery

Alpha‐2 adrenergic agonists for the prevention of cardiac complications among adults undergoing surgery

Perioperative beta‐blockers for preventing surgery‐related mortality and morbidity

Injectable local anaesthetic agents for dental anaesthesia

Local anaesthetics and regional anaesthesia versus conventional analgesia for preventing persistent postoperative pain in adults and children

Aromatherapy for treatment of postoperative nausea and vomiting