Haemodynamic monitoring after paediatric cardiac surgery using echocardiography and PiCCO

Area of Science:

• Pediatric Cardiology
• Critical Care Medicine
• Medical Device Technology

Background:

• Hemodynamic instability is frequent post-pediatric congenital heart defect (CHD) repair.
• Cardiac output monitoring, alongside traditional parameters, can enhance postoperative care.
• Echocardiography and transpulmonary thermodilution are primary methods for infant cardiac output measurement.

Purpose of the Study:

• To compare cardiac output measurements from echocardiography and transpulmonary thermodilution (PiCCO™) post-pediatric cardiac surgery.
• To evaluate the agreement and clinical applicability of these two cardiac output monitoring techniques.

Main Methods:

• Prospective, observational study involving 40 children undergoing elective septal defect repair.
• Simultaneous cardiac output measurements using echocardiography and PiCCO™ at 18 hours post-surgery.
• Inclusion criteria: elective ventricular septal defect or atrio-ventricular septal defect repair via cardiopulmonary bypass.

Main Results:

• PiCCO™ reported a mean cardiac output 3.0% higher than echocardiography, a difference not statistically significant.
• The 95% limits of agreement ranged widely from -50.0% to 82.6%.
• No statistically significant difference was found between the two methods on average.

Conclusions:

• Echocardiography and PiCCO™ demonstrate good average agreement for cardiac output measurement in pediatric post-cardiac surgery patients.
• The substantial variability in individual measurements raises concerns about the interchangeability of these methods in clinical practice.
• Further research may be needed to refine the use of these techniques for reliable, individualized patient management.