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The use of the CC view formula of length × height × width (cm) × 0.625 = estimation of urinary bladder volume (mL) (Lisciandro and Fosgate 2017) serves as a rapid noninvasive way in which to estimate urinary bladder volume and, with serial measurements over time, provides a noninvasive means to estimate urine production. Moreover, walking dogs and allowing them to void, then confirming an empty urinary bladder with AFAST, is another way to effectively measure urine output in the hospitalized setting.

 Make your best oval in longitudinal orientation of the bladder and acquire length and height in centimeters (cm).

 Rotate the probe into transverse orientation and make your best largest oval and measure width (cm) (Figure 7.15).

 Calculate urinary bladder volume using length × height × width (cm) × 0.625 = estimation of urinary bladder volume (mL) (see Figure 7.15).

 Urine output is estimated using change in urinary bladder volume/time.