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Am J Perinatol 2020; 37(11): 1123-1129
DOI: 10.1055/s-0039-1692389
Original Article

Do Calcium and Potassium Levels Influence Ductal Patency in Preterm Infants?

Ufuk Cakir 
1   Division of Neonatology, Health Sciences University, Zekai Tahir Burak Maternity, Education and Research Hospital, Ankara, Turkey
,
Cuneyt Tayman
1   Division of Neonatology, Health Sciences University, Zekai Tahir Burak Maternity, Education and Research Hospital, Ankara, Turkey
,
Mehmet Buyuktiryaki 
1   Division of Neonatology, Health Sciences University, Zekai Tahir Burak Maternity, Education and Research Hospital, Ankara, Turkey
,
Handan Unsal
2   Department of Pediatric Cardiology, Health Sciences University, Zekai Tahir Burak Maternity, Education, and Research Hospital, Ankara, Turkey
,
Buse Ozer Bekmez
1   Division of Neonatology, Health Sciences University, Zekai Tahir Burak Maternity, Education and Research Hospital, Ankara, Turkey
› Author Affiliations Funding None.
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Abstract

Objective We investigated the relationship of serum potassium (K+) and ionized calcium (iCa2+) levels with the persistence of ductus arteriosus.

Study Design This retrospective cohort study included infants with birth weight < 1,500 g and gestational age < 32 weeks. Serum K+ and iCa2+ levels at the 1st and 48th hour of life were measured from samples. The difference between the two levels was calculated for both serum K+ (ΔK+) and iCa2+ (ΔCa2+). These values were compared between hemodynamically significant patent ductus arteriosus (hsPDA) and non-hsPDA.

Results Of 1,322 hospitalized preterm nonates, 1,196 were included in the study. Mean serum K+ levels at the 1st and 48th hour were higher and iCa2+ levels at the 1st and 48th hour were lower in hsPDA and non-hsPDA, respectively (p < 0.001). Ionized ΔCa2+ (–0.06 ± 0.13 vs. –0.02 ± 0.12 mmol/L) was higher in hsPDA (p < 0.001).

Conclusion We demonstrated that serum K+ and iCa2+ level might play a role in ductal constriction.

Keywords

serum potassium - ionized calcium - patent ductus arteriosus - infants - premature - very low birth weight


Publication History

Received: 08 April 2019

Accepted: 29 April 2019

Article published online:
05 June 2019

© 2020. Thieme. All rights reserved.

Thieme Medical Publishers
333 Seventh Avenue, New York, NY 10001, USA.

 

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