CREATE TABLE table_train_61 ("id" NUMBER, "white_blood_cell_count_wbc" NUMBER, "in_another_study" BOOLEAN, "systolic_blood_pressure_sbp" NUMBER, "trauma" BOOLEAN, "temperature" FLOAT, "anc" NUMBER, "hypotension" BOOLEAN, "heart_rate" NUMBER, "paco2" FLOAT, "gastrointestinal_disease" BOOLEAN, "burn_injury" NUMBER, "seizure_disorder" BOOLEAN, "hypoperfusion" BOOLEAN, "immature_form" NUMBER, "drug_abuse" BOOLEAN, "respiratory_rate" NUMBER, "lactate" NUMBER, "NOUSE" FLOAT)

refractory hypotension ( a systolic blood pressure < 90 mm hg despite an iv fluid challenge of at least 20 ml / kg over a 30 minute period ) or evidence of hypoperfusion ( a blood lactate concentration > / = 4 mmol / l )
SELECT * FROM table_train_61 WHERE (hypotension = 1 OR systolic_blood_pressure_sbp < 90) OR (hypoperfusion = 1 OR lactate >= 4)
SELECT * FROM "table_train_61" WHERE "hypoperfusion" = 1 OR "hypotension" = 1 OR "lactate" >= 4 OR "systolic_blood_pressure_sbp" < 90