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DOI: 10.1055/s-0028-1109290
© Georg Thieme Verlag KG Stuttgart · New York
Relation of Body Mass Index and Blood Pressure to Subjective and Objective Acral Temperature
Assoziation zwischen Body-Mass-Index und Blutdruck sowie subjektiv und objektiv erfasster akraler TemperaturPublication History
received: 23.9.2008
accepted: 20.11.2008
Publication Date:
21 April 2009 (online)

Zusammenfassung
Hintergrund: Vaskuläre Dysregulation, bestimmt durch eine positive Anamnese von kalten Akren, ist als ein Risikofaktor für verschiedene Augenkrankheiten postuliert worden. Um den Phänotyp von vasospastischen Personen genauer charakterisieren zu können, haben wir die Assoziation zwischen kalten Akren, Bodymassindex (BMI) und Blutdruck (BD) bei gesunden Probanden untersucht. Methoden und Patienten: Es wurden Fragebogen von 117 gesunden Probanden gesammelt. Basierend auf der Anamnese von kalten Händen und Füßen wurden die Studienteilnehmer in 3 Gruppen unterteilt, nämlich solche „nie“, solche „manchmal“ und solche „immer“ mit kalten Akren. BD wurde sphygmomanometrisch gemessen und zur objektiven Erfassung der Temperatur an den Fingerspitzen wurde ein Infrarotthermometer (IRT) benutzt. Die Zwei-Weg-Varianzanalyse mit dem Geschlecht als erstem und Gruppenauswahl als zweitem Faktor wurde separat ausgerechnet für BMI und durchschnittlichen BD. Zusätzlich wurde die Korrelation der Fingertemperatur mit BMI und BD mit einer Pearson Regression analysiert. Ergebnisse: Geschlechtsverteilung (m/f) war in den 3 Gruppen jeweils 41 / 16, 13 / 21, 4 / 22 und das durchschnittliche Alter 45,8 ± 13,0 Jahre. ANOVA für BMI zeigte für den Faktor Gruppe eine hohe Signifikanz (p = 0,0012), mit vergleichbarem Verhalten beider Geschlechter (Interaktion p = 0,18). Für BD waren die entsprechenden p-Werte: Faktor Gruppe p = 0,026, Interaktion p = 0,89. Korrelationskoeffizient zwischen IRT und BMI betrug 0,34 (p = 0,0002), der zwischen IRT und BD 0,24 (p = 0,009). Schlussfolgerung: Bei gesunden Probanden besteht eine statistisch signifikante Assoziation zwischen Body-Mass-Index und Blutdruck sowie subjektiv und objektiv bestimmten kalten Akren. Diese Beziehung ist geschlechtsunabhängig.
Abstract
Background: Vascular dysregulation, indicated by a positive history of cold extremities, has been postulated as a risk factor for a number of ocular diseases. In order to further characterize the phenotype of vasospastic persons, we tested the association between cold extremities, body mass index (BMI) and blood pressure (BP) in a cohort of healthy subjects. Patients and Methods: Questionnaire data were collected from one hundred and seventeen healthy subjects. Based on the history of cold hands and feet they were divided in three groups, reporting “never”, “sometimes” and “always” having cold extremities. BP was measured sphygmomanometrically and as an objective measure of finger temperature, it was recorded at the fingertips with an infrared thermometer (IRT). Two-way analysis of variance with gender as one, and group selection as the second factor was performed separately for BMI and mean BP. The correlation of finger temperature with BMI and BP was analyzed by the Pearson regression. Results: Gender distribution was male/female = 41 / 16, 13 / 21 and 4 / 22, for the three groups, respectively, and average age 45.8 ± 13.0 years. For BMI, factor groups was highly significant (p = 0.0012) with both genders behaving comparably (interaction p = 0.18). For BP the corresponding p values were: factor group p = 0.026, interaction p = 0.89. Correlation coefficients between IRT and BMI were 0.34 (p = 0.0002) and between IRT and BP 0.24 (p = 0.009). Conclusion: A statistical significant association is present in healthy subjects between body mass index and blood pressure on one, and cold extremities on the other side, defined subjectively as well as measured objectively. This relationship is gender-independent.
Schlüsselwörter
BMI - Blutdruck - vaskuläre Dysregulation - Vasospasmus
Key words
body mass index - blood pressure - vascular dysregulation - vasospasm
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