MATERIALS AND METHODS
A retrospective cohort study performed including all patients who
underwent cardiac catheterization in the first 5 weeks after congenital
heart surgery. It included diagnostic and interventional procedures from
November 2015 to May 2018 in PCCC at King KAUH. Patients who had cardiac
catheterization > 5 weeks after cardiac surgery were
excluded from the study. The study was approved by the ethical committee
of KAUH. Data collected include: Age, weight, diagnosis, type of
surgery, indication of cardiac catheterization, type of cardiac
catheterization, time from surgery, the need for redo surgery, the type
of redo surgery, duration of mechanical ventilation, Inotropic Score
(IS) &Vasoactive Inotropic Score (VIS), duration of ECMO support,
duration of hospital and Pediatric Intensive Care Unit (PICU) admission,
procedure complications and outcome (survival /death). IS is calculated
as dopamine dose (μg/kg/min) + dobutamine dose (μg/kg/min) + 100 ×
epinephrine dose (μg/kg/min). VIS is calculated as IS + 10 × milrinone
dose (μg/kg/min) + 10,000 × vasopressin dose (Units/kg/min) + 100 ×
norepinephrine dose (μg/kg/min)]8.
The success of the interventional procedures was also reported and
defined for angioplasty (ballooning or stenting) as the increase in the
vessel diameter to more than 75 % of adjacent normal vessel or at least
50% increase from the pre-procedural diameter. For occlusion procedures
success was defined as absence of significant residual shunting seen by
angiography 7,9. All procedures were performed during
the same admission for cardiac surgery.