Is portable three-dimensional ultrasound a valid technique for measurement of postpartum urinary bladder volume?
A total of 190 paired measurements were performed on 190 women aged between 16 and 47 years. Majority of the women (36.9%) were in their first parity (range: 1-9). The mean BV was 159.46 mL [standard deviation (SD) ¼ 99.78; range: 17e593 mL] on three-dimensional (3D) UBS and 143.76 mL (SD ¼ 104.8...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2014
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| Subjects: | |
| Online Access: | http://irep.iium.edu.my/36771/1/Bladder_scan_TAOG.pdf http://irep.iium.edu.my/36771/ http://dx.doi.org/10.1016/j.tjog.2013.01.028 |
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| Summary: | A total of 190 paired measurements were performed on 190 women aged
between 16 and 47 years. Majority of the women (36.9%) were in their first parity (range: 1-9). The mean
BV was 159.46 mL [standard deviation (SD) ¼ 99.78; range: 17e593 mL] on three-dimensional (3D) UBS
and 143.76 mL (SD ¼ 104.89; range: 2-588 mL) on catheterization. The mean difference between the two
values was 15.70 mL (SD ¼ 69.31, p < 0.001). The Foley’s catheter was clamped for a minimum of 30
minutes and a maximum of 260 minutes. The UBS measurements were highly correlated with the BV
obtained by catheterization (r ¼ 0.819; p < 0.001). There was no significant difference between UBS and
catheterized volume in a different volume subgroup. There were 35 cases (18.2%) with the difference in
measurement of more than 25%. Twenty-five cases were associated with a catheterized volume less than
50 mL. There were a total of 33 cases with true BV of less than 50 mL, and only eight cases (24.24%) had
an accurate measurement. The UBS tends to overestimate BV between 2 and 270 mL in this group. There
was a significant linear relationship between the difference in measurement and body weight and
duration of clamping.
Conclusion: Measurement of BV in immediate postpartum period using UBS is comparable with urethral
catheterization. The accuracy of measurement is affected by body weight and increasing amount of BV.
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