New tool to improve blood pressure measurement

 

  • Scientists at Oxford University have developed a new way of estimating our true underlying blood pressure that overcomes common problems in a clinical setting which can lead to misleading results.

 

Oxford, UK (March 21,2016) – Scientists at Oxford University have developed a new way of estimating our true underlying blood pressure that overcomes common problems in a clinical setting which can lead to misleading results. Their work is published in the journal Hypertension.


Blood pressure measurement is frequently used by medics to understand our health, and dangerously high blood pressure (hypertension) can lead to serious conditions like heart attack or stroke. Blood pressure levels fluctuate throughout the day and can easily change as a result of stress, physical activity and even talking. Readings are usually taken in a doctor’s clinic, but these measurements are often different from those taken at home, which are considered to be more reflective of your true underlying blood pressure level.

 

Study leader Dr James Sheppard said: ‘One phenomenon where readings are higher in the clinic than at home is referred to as the ‘white coat effect’. This can lead to people being started on blood pressure lowering treatments they do not really need. A reverse effect is also seen – some patients have lower readings in the clinic than they would in normal life, meaning that they can miss out on treatment that they could potentially benefit from. Understanding and accounting for the scale of these home-clinic differences would improve diagnosis and treatment.’

 

The team therefore analysed data from more than 2000 patients, looking at factors including age, gender, body mass index, alcohol consumption and tobacco use. They also studied a number of ‘blood pressure characteristics’ from multiple readings taken in the clinic, including the difference between the first and last readings and the rate of change in blood pressure among others. Data from around 900 patients was used to build a model, identifying factors that affected the difference between home and clinic blood pressure readings. The model was then validated by checking against the data from the other patients in the study.

 

The result is a prediction model that uses three separate blood pressure readings taken in a single consultation and basic patient characteristics to give an adjusted blood pressure reading that is significantly more accurate than existing models for identifying hypertension.

 

Dr Sheppard explained: ‘We compared the accuracy of our model to the current UK NICE guidelines and those in use in the USA, Canada and Europe. It correctly classified 93% of cases, compared to the next best, the NICE guidelines, which correctly classified 78% of patients.

 

‘Correctly classifying people as hypertensive or not is important for patients – ensuring that those who need treatment get it. Perhaps just as importantly, this approach prevents those patients displaying a white coat effect from being put on treatment which they don’t really need. This approach has the potential to save large amounts of money for the NHS by avoiding unnecessary treatment in those with the white coat effect. It may also lead to fewer patients suffering from heart attacks and stroke, by treating patients’ blood pressure more effectively.’

Werbung

 

 

 

While the equation is complex, the team have created an online calculator for health professionals, which is available at https://sentry.phc.ox.ac.uk/proof-bp.

 

 


University of Oxford, 21.03.2016 (tB).

MEDICAL NEWS

Monoclonal antibody therapy for COVID-19 safe, effective for transplant patients
Having trouble falling asleep predicts cognitive impairment in later life
SARS-CoV-2 detectable — though likely not transmissible — on hospital…
Waking just one hour earlier cuts depression risk by double…
Moving one step closer to personalized anesthesia

SCHMERZ PAINCARE

Pflegeexpertise im Fokus: Schmerzmanagement nach Operationen
Versorgung verbessern: Bundesweite Initiative der Deutschen Gesellschaft für Schmerzmedizin zu…
Jedes vierte Kind wünscht bessere Schmerzbehandlung
Lebensqualität von Patienten in der dauerhaften Schmerztherapie mit Opioiden verbessern
Wenn Schmerzen nach einer OP chronisch werden

DIABETES

Bundestag berät über DMP Adipositas: DDG begrüßt dies als Teil…
Mit der Smartwatch Insulinbildung steuern
Verbände fordern bessere Ausbildung und Honorierung von Pflegekräften für Menschen…
Minimalinvasive Geräte warnen ungenügend vor Unterzuckerung
Typ-1-Diabetes und Hashimoto-Thyreoiditis treten häufig gemeinsam auf

ERNÄHRUNG

DGEM plädiert für Screening und frühzeitige Aufbautherapie: Stationäre COVID-19-Patienten oft…
Führt eine vegane Ernährungsweise zu einer geringeren Knochengesundheit?
Regelmässiger Koffeinkonsum verändert Hirnstrukturen
Corona-Erkrankung: Fehl- und Mangelernährung sind unterschätze Risikofaktoren
Gesundheitliche Auswirkungen des Salzkonsums bleiben unklar: Weder der Nutzen noch…

ONKOLOGIE

Lymphom-News vom EHA2021 Virtual. Alle Berichte sind nun online verfügbar!
Deutsch-dänisches Interreg-Projekt: Grenzübergreifende Fortbildungskurse in der onkologischen Pflege
Sotorasib: Neues Medikament macht Lungenkrebs-Patienten Hoffnung
Risikobasiertes Brustkrebs-Screening kosteneffektiv
Krebs – eine unterschätzte finanzielle Herausforderung

MULTIPLE SKLEROSE

Goldstandard für Versorgung bei Multipler Sklerose
Patienteninformationen zu Interferon-beta-Präparaten
Zulassung des S1P Modulators Ponesimod zur Behandlung von erwachsenen Patienten…
Neue S2k-Leitlinie für Diagnostik und Therapie der Multiplen Sklerose
Krankheitsbezogenes Kompetenznetz Multiple Sklerose: Stellungnahme zu SARS CoV 2 Impfdaten…

PARKINSON

Meilenstein in der Parkinson-Frühdiagnose
Parkinson-Erkrankte besonders stark von Covid-19 betroffen
Gangstörungen durch Kleinhirnschädigung beim atypischen Parkinson-Syndrom
Parkinson-Agenda 2030: Die kommenden 10 Jahre sind für die therapeutische…
Gemeinsam gegen Parkinson: bessere Therapie durch multidisziplinäre Versorgung