Evidence map›Paper›PMID 38692034›Full record

ArticleAutonomic neuroscience : basic & clinical2024

Longitudinal prevalence of neurogenic orthostatic hypotension in the idiopathic Parkinson Progression Marker Initiative (PPMI) cohort.

Paul Beach, J Lucas McKay

Open access · greenAbstract read
In one paragraph

Article in Autonomic neuroscience : basic & clinical, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed, 2 pooled it
5.7field-weighted citation impact, top 4% of its field
1 · What the graph read from it

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.

2 · The registry

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.

3 · Its place in the literature

Who cites it

9 citing papers in PubMed, 2 syntheses or guidelines pooled it, 10 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Locus coeruleus degeneration is associated with orthostatic hypotension in Parkinson's disease and multiple system atrophy.Clinical autonomic research : official journal of the Clinical Autonomic Research Society · 2026
    Article
  4. Article
  5. Review
  6. Orthostatic Hypotension and Cognition in Lewy Body Disorders: On Promising Tides.Movement disorders : official journal of the Movement Disorder Society · 2025
    Article
  7. Comment to the article titled: sympathetic dysfunction as an early indicator of autonomic involvement in Parkinson's disease.Clinical autonomic research : official journal of the Clinical Autonomic Research Society · 2024
    Article
  8. Article
  9. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

2 authors at 1 institution in 1 country.

Paul BeachEmory University School of Medicine, Department of Neurology, United States of America. Electronic address: pabeach@emory.edu.
J Lucas McKayEmory University School of Medicine, Department of Neurology, United States of America; Emory University School of Medicine, Department of Biomedical Informatics, United States of America.
Emory University · US

Funding

Neuromechanical Modeling of Postural Responses:Mechanisms of Balance Impairments in Parkinson's DiseaseR01HD046922 · NICHD · GEORGIA INSTITUTE OF TECHNOLOGY · PI Michael Robert Borich, Lena H Ting · 2004 to 2026
$7.7M
Partnered Rhythmic Rehabilitation for Enhanced Motor-Cognition in Prodromal Alzheimer's Disease Safety SupplementR01AG062691 · NIA · EMORY UNIVERSITY · PI HACKNEY, MADELEINE EVE · 2019 to 2023
$4.1M
Individual-specific engagement of cortical resources for standing balance control in aging and post strokeR01AG072756 · NIA · EMORY UNIVERSITY · PI Michael Robert Borich, Lena H Ting · 2022 to 2026
$3.0M
Neural mechanisms of balance deficits, falls, and freezing of gait in Parkinson's diseaseK25HD086276 · NICHD · EMORY UNIVERSITY · PI MCKAY, JOHNATHAN LUCAS · 2016 to 2019
$509k
NIA NIH HHS R01 AG062691NIA NIH HHS R01 AG072756NICHD NIH HHS K25 HD086276NICHD NIH HHS R01 HD046922NINDS NIH HHS L30 NS089044
6 · The paper itself

Abstract

backgroundReported orthostatic hypotension (OH) prevalence in Parkinson's disease (PD) varies widely, with few studies evaluating specifically neurogenic-OH (nOH). The ratio of orthostatic heart rate (HR) to systolic blood pressure (SBP) change (Δ) is a valid screening method to stratify nOH/non-nOH but has had minimal epidemiologic application.

objectiveTo estimate the prevalence of nOH and non-nOH in the PPMI using the ΔHR/ΔSBP ratio and examine associations between nOH and various motor and non-motor measures.

methodsLongitudinal orthostatic vitals and motor and non-motor measures were extracted (baseline-month 48). Patients were consensus criteria classified as OH+/-, with ΔHR/ΔSBP sub-classification to nOH (ΔHR/ΔSBP < 0.5) or non-nOH (ratio ≥ 0.5). Prevalence was determined across visits. Independent linear mixed models tested associations between nOH/non-nOH and clinical variables.

resultsOf N = 907 PD with baseline orthostatic vitals, 3.9 % and 1.8 % exhibited nOH and non-nOH, respectively. Prevalence of nOH/non-nOH increased yearly (P = 0.012, chi-square), though with modest magnitude (baseline: 5.6 % [95 % CI: 4.3-7.3 %]; month 48: 8.6 % [6.4-11.5 %]). nOH patients were older than PD with no OH and nOH was associated with greater impairment of motor and independent functioning than non-nOH/OH- groups. Cognitive function and typical OH symptoms were worse in PD + OH, generally.

conclusionsnOH prevalence was greater than non-nOH in the PPMI early PD cohort, with modest prevalence increase over time. Our findings are consistent with prior studies of large cohorts that evaluated nOH, specifically. Those with early PD and nOH were likelier to be older and suffer from greater motor and functional impairment, but OH presence was generally associated with more cognitive impairment.

Indexed as

Disease ProgressionHypotension, OrthostaticParkinson DiseaseAgedBlood PressureCohort StudiesFemaleHeart RateHumansLongitudinal StudiesMaleMiddle AgedPrevalenceAutonomic failureCognitionOrthostatic hypotensionParkinson's diseasePPMI

Identifiers

PMID38692034
PMCPMC11128342
OpenAlexW4393352381

What OpenQuestion holds

Textmetadata
LicenceTDM
Read underepoch 390

Registered trials

None linked

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.