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

Intravenous versus inhalational anaesthesia for paediatric outpatient surgery

Ortiz, AC, Atallah, ÁN, et al. · Cochrane Database of Systematic Reviews · 2014

Anaesthesia

Thinnest evidence

Reviews 125

Intravenous versus inhalational anaesthesia for paediatric outpatient surgery

Preoperative carbohydrate treatment for enhancing recovery after elective surgery

Clonidine premedication for postoperative analgesia in children

Different regimens of intravenous sedatives or hypnotics for electroconvulsive therapy (ECT) in adult patients with depression

Interventions for treating inadvertent postoperative hypothermia

Thermal insulation for preventing inadvertent perioperative hypothermia

Femoral nerve blocks for acute postoperative pain after knee replacement surgery

Intranasal fentanyl for the management of acute pain in children

Mannitol versus hypertonic saline for brain relaxation in patients undergoing craniotomy

Tracheal intubation with a flexible intubation scope versus other intubation techniques for obese patients requiring general anaesthesia

Interventions for protecting renal function in the perioperative period

Nonsteroidal anti‐inflammatory drugs and perioperative bleeding in paediatric tonsillectomy

Pharmacological agents for preventing morbidity associated with the haemodynamic response to tracheal intubation

Paracervical local anaesthesia for cervical dilatation and uterine intervention

Infraclavicular brachial plexus block for regional anaesthesia of the lower arm

Intravenous versus inhalation anaesthesia for one‐lung ventilation

Music interventions for preoperative anxiety

Neuraxial anaesthesia for lower‐limb revascularization

Perioperative statin therapy for improving outcomes during and after noncardiac vascular surgery

Supraglottic airway devices versus tracheal intubation for airway management during general anaesthesia in obese patients

Nurse‐led versus doctor‐led preoperative assessment for elective surgical patients requiring regional or general anaesthesia

Perioperative increase in global blood flow to explicit defined goals and outcomes following surgery

Sedative techniques for endoscopic retrograde cholangiopancreatography

Intra‐articular lignocaine versus intravenous analgesia with or without sedation for manual reduction of acute anterior shoulder dislocation in adults

Adjusting the pH of lidocaine for reducing pain on injection