Trial reportNeurology2021
Randomized Study of Metoclopramide Plus Diphenhydramine for Acute Posttraumatic Headache.
Trial report in Neurology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to 3 registered trials, which are not on this map. Cited by 5 papers.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
A Randomized Placebo Controlled Trial of IV Metoclopramide for Acute Post-traumatic Headache
A Randomized Study of Dexamethasone as Adjuvant Therapy for Acute Post-traumatic Headache
A Randomized Study of Intravenous Metoclopramide Versus Intravenous Acetaminophen for Acute Concussion Treatment
Who cites it
5 citing papers in PubMed, 12 citations in OpenAlex.
- Trial
- Phenotype-guided Management of Post-traumatic Headache: An Update on Pathophysiology and Treatment.Current pain and headache reports · 2026Review
- Headache Management in the Neuroscience Intensive Care Unit.Current pain and headache reports · 2024Review
- Treatment Options for Posttraumatic Headache: A Current Review of the Literature.Current pain and headache reports · 2024Review
- Breakthroughs on the clinical management of headache and questions that need to be solved.Ibrain · 2021Review
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
11 authors at 1 institution in 1 country.
Funding
Abstract
objectiveTo determine whether IV metoclopramide 20 mg + diphenhydramine 25 mg (M + D) was more efficacious than IV placebo for acute moderate or severe posttraumatic headache in the emergency room.
methodsWe conducted this randomized, double-blind, placebo-controlled, parallel-group study in 2 urban emergency departments (EDs). Participants who experienced head trauma and presented to our EDs within 10 days with a headache fulfilling criteria for acute posttraumatic headache were included. We randomized participants in a 1:1 ratio to M + D or placebo. Participants, caregivers, and outcome assessors were blinded to assignment. The primary outcome was improvement in pain on a scale of 0 to 10 between baseline and 1 hour after treatment.
resultsThis study was completed between August 2017 and March 2020. We screened 414 patients for participation and randomized 160: 81 to M + D and 79 to placebo. Baseline characteristics were comparable between the groups. All enrolled participants provided primary outcome data. Patients receiving placebo reported mean improvement of 3.8 (SD 2.6), while those receiving M + D improved by 5.2 (SD 2.3), for a difference favoring metoclopramide of 1.4 (95% confidence interval [CI] 0.7-2.2,
conclusionM + D was more efficacious than placebo with regard to relief of posttraumatic headache in the ED. TRIAL REGISTRATION INFORMATION: ClinicalTrials.gov Identifier: NCT03220958. CLASSIFICATION OF EVIDENCE: This study provides Class I evidence that for patients with acute moderate or severe posttraumatic headache, IV M + D significantly improved pain compared to placebo.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.