Trial reportAmerican journal of physiology. Heart and circulatory physiology2022
Low-dose morphine reduces pain perception and blood pressure, but not muscle sympathetic outflow, responses during the cold pressor test.
Trial report in American journal of physiology. Heart and circulatory physiology, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 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.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
9 citing papers in PubMed, 8 citations in OpenAlex.
- Effect of virtual reality on pain and anxiety during colonoscopy: A randomized control trial.The Journal of international medical research · 2026Trial
- Low-dose sufentanil does not affect tolerance to LBNP-induced central hypovolemia or blood pressure responses during a cold pressor test.American journal of physiology. Regulatory, integrative and comparative physiology · 2024Trial
- Comparing the Effects of Low-Dose Ketamine, Fentanyl, and Morphine on Hemorrhagic Tolerance and Analgesia in Humans.Prehospital emergency care · 2023Trial
- Between-visit reproducibility of cerebrovascular and cardiovascular reactivity during the cold pressor test.American journal of physiology. Heart and circulatory physiology · 2026Article
- RLS shows increased resting state sympathetic activity and decreased sympathetic response capability.Journal of neurology · 2025Article
- Inflammatory and chemotactic signals of the brainstem solitary tract mediate the morphine exacerbation of impaired reflex chronotropism in septic rats.Frontiers in pharmacology · 2025Article
- Advanced cardiovascular physiology in an individual with type 1 diabetes after 10-year ketogenic diet.American journal of physiology. Cell physiology · 2024Article
- Acute nasal breathing lowers diastolic blood pressure and increases parasympathetic contributions to heart rate variability in young adults.American journal of physiology. Regulatory, integrative and comparative physiology · 2023Article
- The forearm vascular response to sympathetic activation is attenuated in female, but not male, participants following acute intermittent hypoxia.Journal of applied physiology (Bethesda, Md. : 1985) · 2023Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
10 authors at 2 institutions in 1 country.
Funding
Abstract
Our knowledge about how low-dose (analgesic) morphine affects autonomic cardiovascular regulation is primarily limited to animal experiments. Notably, it is unknown if low-dose morphine affects human autonomic cardiovascular responses during painful stimuli in conscious humans. Therefore, we tested the hypothesis that low-dose morphine reduces perceived pain and subsequent sympathetic and cardiovascular responses in humans during an experimental noxious stimulus. Twenty-nine participants (14 females/15 males; 29 ± 6 yr; 26 ± 4 kg·m
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.