It was reported that after turning the patient hemodynamics ++ unstable with bp down to 68/43 mmhg.Titrated vasopressors up, initiated fluid bolus, patient not responding to interventions.Writer noticed fluid on the ground and that 4 way stop cocks (2) had become disconnected from each other and middle twist lock connection and so vasopressors were not infusing.Attempted to reconnect, twist lock not functioning properly.Connections were manually held by rn while new "2 gang 3 way stop cock" was primed.Vasopressors were connected to new stop cock and hemodynamics were stabilized.Malfunctioning stop cocks compared to 2 newly opened 4 way stop cocks, the stop cocks that had been on patient do not lock securely at the twist lock/very easily released from each other.Unable to visualize crack on twist lock which resulted in critical hemodynamic instability.There was patient involvement and no patient harm.Two devices of the same part and lot number were involved on the same patient.
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