Biomed Pap Med Fac Univ Palacky Olomouc Czech Repub. 2021, 165(4):428-434 | DOI: 10.5507/bp.2020.048

Ultrasound cardiac output monitoring in mechanically ventilated children

Jiri Fremuth, Jiri Kobr, Lumir Sasek, Katerina Pizingerova, Jana Zamboryova, Josef Sykora
Department of Pediatrics - PICU, Faculty of Medicine in Pilsen, Charles University in Prague, Czech Republic

Aim: To non-invasively identify the hemodynamic changes in critically ill children during the first 48 h following initiation of mechanical ventilation by the ultrasound cardiac output monitor (USCOM) method and compare the data in children with pulmonary and non-pulmonary pathology.

Materials and Methods: This was a prospective observational study to evaluate the influence of mechanical ventilation on hemodynamic changes and to describe hemodynamic profiles of mechanically ventilated children. A total of 56 children with respiratory failure were included in the present study. Ventilated patients are divided into two groups. Group A (n=36) includes patients with pulmonary pathology. Group B (n=20) consists of patients with extra pulmonary etiology of respiratory failure. Hemodynamic parameters (cardiac index and systemic vascular resistance index) were evaluated using ultrasound cardiac output monitoring (USCOM 1A) immediately following initiation of mechanical ventilation and again at 6, 12, and 48 h. Pharmacological circulatory support (inotropes, vasopressors, levosimendan and phosphodiesterase III inhibitors) was individually and continuously modified based on real-time hemodynamic parameters and optimal fluid balance.

Results: No significant differences in hemodynamic profiles were found between Group A and Group B.

Conclusion: The protective strategy of mechanical ventilation was not associated with significant differences in hemodynamic profiles between children ventilated for pulmonary and non-pulmonary pathologies. Clinical Significance. Hemodynamically unstable children ventilated for pulmonary pathology with the protective strategy of mechanical ventilation had a greater requirement for inotropic and combined inotropic and vasoactive circulatory support than children ventilated for non-pulmonary causes of respiratory failure.

Keywords: hemodynamics, ultrasound cardiac output monitor, mechanical ventilation, children, case-control study

Received: March 24, 2020; Revised: September 15, 2020; Accepted: October 6, 2020; Prepublished online: October 22, 2020; Published: November 23, 2021  Show citation

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Fremuth, J., Kobr, J., Sasek, L., Pizingerova, K., Zamboryova, J., & Sykora, J. (2021). Ultrasound cardiac output monitoring in mechanically ventilated children. Biomedical papers, 165(4), 428-434. doi: 10.5507/bp.2020.048
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