Evidence map›Paper›PMID 33164307›Full record

SynthesisJournal of clinical hypertension (Greenwich, Conn.)2020

Nighttime dipping status and risk of cardiovascular events in patients with untreated hypertension: A systematic review and meta-analysis.

Maria Gavriilaki, Panagiota Anyfanti, Barbara Nikolaidou, Antonios Lazaridis, Eleni Gavriilaki, Stella Douma, Eugenia Gkaliagkousi

Open access · greenAbstract readMeta-AnalysisSystematic Review
In one paragraph

Synthesis in Journal of clinical hypertension (Greenwich, Conn.), 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 36 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
36citing papers in PubMed, 3 pooled it
5.2field-weighted citation impact, top 3% 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

36 citing papers in PubMed, 3 syntheses or guidelines pooled it, 64 citations in OpenAlex.

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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

7 authors at 2 institutions in 1 country.

Maria GavriilakiLaboratory of Clinical Neurophysiology, AHEPA Hospital, Aristotle University of Thessaloniki, Thessaloniki, Greece.ORCID 0000-0002-1958-0063
Panagiota Anyfanti3rd Department of Internal Medicine, Papageorgiou Hospital, Aristotle University of Thessaloniki, Thessaloniki, Greece.ORCID 0000-0002-5658-4629
Barbara Nikolaidou3rd Department of Internal Medicine, Papageorgiou Hospital, Aristotle University of Thessaloniki, Thessaloniki, Greece.
Antonios Lazaridis3rd Department of Internal Medicine, Papageorgiou Hospital, Aristotle University of Thessaloniki, Thessaloniki, Greece.
Eleni GavriilakiHematology Department, G. Papanicolaou Hospital, Thessaloniki, Greece.ORCID 0000-0002-8883-8208
Stella Douma3rd Department of Internal Medicine, Papageorgiou Hospital, Aristotle University of Thessaloniki, Thessaloniki, Greece.
Eugenia Gkaliagkousi3rd Department of Internal Medicine, Papageorgiou Hospital, Aristotle University of Thessaloniki, Thessaloniki, Greece.
Aristotle University of Thessaloniki · GRG. Papanikolaou General Hospital · GR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The objective of this systematic review and meta-analysis is to determine whether nocturnal blood pressure fall, expressed by dipping patterns according to ambulatory blood pressure monitoring (ABPM), is a risk factor for cardiovascular events (CVEs) in untreated hypertensives. Α thorough systematic literature search at MEDLINE, Embase, Cochrane Library, and gray literature was conducted through March 2020. Two reviewers screened studies and assessed dipping patterns of untreated hypertensives using ABPM with a follow-up >6 months. Newcastle-Ottawa scale was used for risk of bias assessment. We initially identified 463 reports; of which, seven cohort studies were eligible for meta-analysis enrolling 10 438 untreated hypertensives. Untreated patients classified as dippers at baseline (n = 7081) had significant lower risk of CVEs and total mortality compared to non-dippers (n = 3,357) [RR = 0.67, 95% CI (0.49, 0.92); RR = 0.71, 95% CI (0.59, 0.86)]. However, when patients were further classified into four dipping groups, only reverse dippers, yet not extreme dippers or non-dippers, were at increased risk for CVEs compared to dippers [RR = 0.47, 95% CI (0.33, 0.66)]. Likewise, only reverse dippers had a higher stroke risk than dippers [RR = 0.39, 95% CI (0.22, 0.72)]. When compared with the whole group of dippers (including extreme dippers), non-dipping alone (excluding reverse dipping) was not a significant risk factor for CVEs [RR = 0.84, 95% CI (0.61, 1.16)] or total mortality [RR = 0.84, 95% CI (0.61, 1.16); RR = 0.78, 95% CI (0.53, 1.13), respectively]. Untreated hypertensives may benefit more from the evaluation of reverse dipping rather than the non-dipping phenomenon in general.

Indexed as

Blood Pressure Monitoring, AmbulatoryHypertensionBlood PressureCircadian RhythmHumansRisk Factorshypertensionmeta-analysisnighttime dippingsystematic reviewuntreated

Identifiers

PMID33164307
PMCPMC8030020
OpenAlexW3104425511

What OpenQuestion holds

Textmetadata
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.