Table 1 Diagnostic criteria of LCC.

From: Late-onset Circulatory Collapse and Continuous Positive Airway Pressure are Useful Predictors of Treatment-requiring Retinopathy of Prematurity: A 9-year Retrospective Analysis

1. Several days have passed after the resolution of unstable circulatory condition in the acute postnatal phase.

2. Episodes of circulatory collapse as described below have appeared without obvious causes such as sepsis, PDA, hemorrhage, and other causes.

    Blood pressure

                    Hypotension with ≤ 80% of blood pressure in the previous stable state

    Urinary volume

                     (a) Oliguria with ≤ 50% of urinary volume in the previous stable state

                     (b) Oliguria with ≤ 1 ml/kg/hr over the past 8 hr

                     (c) Anuria for the past 4 hr (urinary retention is excluded)

3. Administration of glucocorticoid was required because treatment with volume expansion or a vasopressor was inadequate for the improvement of circulatory collapse.

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