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Relationship of abdominal pressure and body mass index in men with LUTS
Author(s) -
McIntosh Stuart,
Drinnan Michael,
Griffiths Clive,
Robson Wendy,
Ramsden Peter,
Pickard Robert
Publication year - 2003
Publication title -
neurourology and urodynamics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.918
H-Index - 90
eISSN - 1520-6777
pISSN - 0733-2467
DOI - 10.1002/nau.10145
Subject(s) - medicine , body mass index , overweight , isovolumetric contraction , urology , normal weight , surgery , blood pressure , diastole
Aims In the development of a non‐invasive method for estimating isovolumetric intravesical pressure (p ves,isv ) we looked for a relationship between intra‐abdominal pressure (p abd ) and general build, expressed as body mass index (BMI) in men with lower urinary tract symptoms (LUTS). Materials and Methods In 100 consecutive male patients undergoing an invasive pressure flow study (PFS) the p abd was recorded continuously during filling and voiding. The magnitude at four set points was measured: before filling, after filling, during voiding and at the end of voiding. Patients' weight (kg) and height (m) were also recorded and their BMI (weight/height 2 ) was calculated. Results During the fill/void cycle p abd increased during bladder filling from 37 ± 7 cm H 2 O (mean ± SD) to 38 ± 8 cm H 2 O, fell during voiding to 35 ± 9 cm H 2 O before increasing to 36 ± 8 cm H 2 O at the end of voiding. There was a clear relationship between the individual values of p abd and BMI (correlation co‐efficient = 0.52) and to a lesser extent weight (correlation co‐efficient = 0.42). The relationship with BMI was clarified by separating the subjects into groups of normal, overweight and obese. Conclusions A clear relationship between BMI and p abd was demonstrated, but because of the difficulties in quantifying it for an individual, it is impractical to apply an adjustment to non‐invasive estimates of p ves,isv . Neurourol. Urodynam. 22:602–605, 2003. © 2003 Wiley‐Liss, Inc.