Baroreflex sensitivity and blood pressure in premature infants - dependence on gestational age, postnatal age and sex

Title:

Baroreflex sensitivity and blood pressure in premature infants - dependence on gestational age, postnatal age and sex

Creator:

Javorka, Kamil, Hašková, Katarína, Czippelová, Barbora, Zibolen, Mirko, and Javorka, Michal

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:cb168a4b-220c-4f49-95e6-6db12c5377b4
uuid:cb168a4b-220c-4f49-95e6-6db12c5377b4
doi:10.33549/physiolres.934829

Subject:

premature infants, volume-clamp photoplethysmography, baroreflex sensitivity, blood pressure, postconceptional age, and sex differences

Type:

model:article and TEXT

Format:

počítač and online zdroj

Description:

To characterize the differences in baroreflex sensitivity (BRS), blood pressure (BP), heart rate (HR) and respiration rate (RR) in preterm infants with a similar postconceptional age reached by various combinations of gestational and postnatal ages. To detect potential sex differences in assessed cardiovascular parameters. The study included 49 children (24 boys and 25 girls), postconceptional age 34.6±1.9 weeks. Two subgroups of infants were selected with the similar postconceptional age (PcA) and current weight, but differing in gestational (GA) and postnatal (PnA) ages, as well as two matched subgroups of boys and girls. Blood pressure (BP) was recorded continuously using Portapres device (FMS). A stationary segment of 250 beat-to-beat BP values was analyzed for each child. Baroreflex sensitivity (BRS) was calculated by cross-correlation sequence method. Despite the same PcA age and current weight, children with longer GA had higher BRS, diastolic and mean BP than children with shorter GA and longer PnA age. Postconceptional age in preterm infants is a parameter of maturation better predicting baroreflex sensitivity and blood pressure values compared to postnatal age. Sex related differences in BRS, BP, HR and RR were not found in our group of preterm infants.

Language:

English

Rights:

http://creativecommons.org/licenses/by-nc-sa/4.0/
policy:public

Coverage:

S349-S356

Source:

Physiological research | 2021 Volume:70 | Number:Supplement 3

Harvested from:

CDK

Metadata only:

false