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Respiration. 2015;89(4):284-93. doi: 10.1159/000371472. Epub 2015 Mar 7.

Reference ranges for and determinants of right ventricular area in healthy adults by two-dimensional echocardiography.

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1
Centre for Pulmonary Hypertension, Thoraxclinic, University Hospital Heidelberg, Heidelberg, Germany.

Abstract

BACKGROUND:

The right ventricular (RV) area is important for diagnosis and follow-up in patients with various diseases, such as in pulmonary hypertension.

OBJECTIVES:

The aim of this study was to define the reference ranges of the end-diastolic RV area in healthy adults and to assess the determining factors.

METHODS:

In the first part of the study 860 healthy subjects (37.6% female; mean age 28 ± 5.84; 395 endurance athletes, 255 strength athletes and 210 non-athletes) were prospectively assessed. In the second part we performed a pooled analysis of studies published between 1979 and 2014 describing the RV area in healthy subjects (n = 5,248). Statistical analysis included the calculation of reference ranges and the analysis of determining factors.

RESULTS:

Mean end-diastolic RV areas in 860 healthy subjects were significantly larger in endurance athletes (25.1 ± 2.0 cm(2)) compared with strength athletes (22.9 ± 1.7 cm(2)) and non-athletes (16.7 ± 2.0 cm(2), p < 0.001). In the synopsis of both data sets, mean end-diastolic RV area was significantly larger in European/American males (17 cm(2)) compared with females (14 cm(2), p < 0.001) and in Asian males (16 cm(2)) compared with females (13 cm(2), p < 0.001). The area increased with body surface area and older age.

CONCLUSION:

This is the largest data set to define RV size in healthy adults aged <50 years. RV area was determined by age, gender, body surface area, ethnicity and high-level exercise training. High standard deviations resulted in high values for the upper limit of the reference range, which might therefore not be useful as cut-off values for screening purposes. Gender- and ethnicity-specific reference ranges should be used. Further studies in subjects aged >50 years as well as in children are needed.

PMID:
25765954
DOI:
10.1159/000371472
[Indexed for MEDLINE]
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