Pulsatility of the umbilical cord in full-term natural childbirths

Mendonça, Thamires Ribeiro Marques; Santos, Regina Célia Sales; Lima, Pollyana Campos; Araujo, Maria Gabriella Silva; Sanches, Maria Elisângela Torres Lima; Silva, Jovânia Marques Lima e

doi:10.1590/1983-1447.2021.20200241

person Thamires Ribeiro Marques Mendonça

schoolUniversidade Federal de Alagoas (UFAL), Escola de Enfermagem. Maceió, Alagoas, Brasil.

person Regina Célia Sales Santos

schoolUniversidade Federal de Alagoas (UFAL), Escola de Enfermagem. Maceió, Alagoas, Brasil.schoolUniversidade Federal de Alagoas (UFAL), Programa de Pós-graduação em Enfermagem. Maceió, Alagoas, Brasil.

0000-0002-2447-0707

person Pollyana Campos Lima

schoolUniversidade Federal de Alagoas (UFAL), Programa de Pós-graduação em Enfermagem. Maceió, Alagoas, Brasil.

0000-0002-3569-7544

person Maria Gabriella Silva Araujo

schoolUniversidade Federal de Alagoas (UFAL), Programa de Pós-graduação em Enfermagem. Maceió, Alagoas, Brasil.schoolUniversidade Federal de Alagoas (UFAL), Programa de Pós-graduação da Rede Nordeste de Biotecnologia. Maceió, Alagoas, Brasil.

0000-0003-0495-3362

person Maria Elisângela Torres Lima Sanches

schoolUniversidade Federal de Alagoas (UFAL), Escola de Enfermagem. Maceió, Alagoas, Brasil.

0000-0001-8987-3825

person Jovânia Marques Lima e Silva

schoolUniversidade Federal de Alagoas (UFAL), Escola de Enfermagem. Maceió, Alagoas, Brasil.schoolUniversidade Federal de Alagoas (UFAL), Programa de Pós-graduação em Enfermagem. Maceió, Alagoas, Brasil.

0000-0001-7452-2651

personCorresponding author: Regina Célia Sales Santos Email:
reginasales@eenf.ufal.br

groupsAuthorship contribution

Conceptualization: Regina Célia Sales Santos e Thamires Ribeiro Marques Mendonça.

Data curation: Regina Célia Sales Santos e Maria Gabriella Silva Araujo.

Formal analysis: Regina Célia Sales Santos e Maria Gabriella Silva Araujo.

Investigation: Thamires Ribeiro Marques Mendonça.

Methodology: Regina Célia Sales Santos e Thamires Ribeiro Marques Mendonça.

Project administration: Regina Célia Sales Santos e Thamires Ribeiro Marques Mendonça.

Resources: Thamires Ribeiro Marques Mendonça Software: Maria Gabriella Silva Araujo e Pollyana Campos Lima.

Supervision: Regina Célia Sales Santos.

Visualization: Maria Elisângela Torres Lima Sanches e Jovânia Marques Lima e Silva.

Writing-original draft: Regina Célia Sales Santos, Thamires Ribeiro Marques Mendonça e Pollyana Campos Lima.

Writing-review & editing: Regina Célia Sales Santos, Thamires Ribeiro Marques Mendonça, Pollyana Campos Lima, Maria Gabriella Silva Araujo e Maria Elisângela Torres Lima Sanches e Jovânia Marques Lima e Silva.

Associate editor

Jéssica Machado Teles

Editor-in-chief

Maria da Graça Oliveira Crossetti

Variables of Fetal Attachments	Mean (±sd)	Min-Max	R	p-value
UCP time* (seconds)	285.48 (296.14)	38-1020	-	-
Cord circumference (cm)	4.09 (±0.88)	3.0-7.0	0.107	0.407
Placental delivery time (seconds)	743.43 (±597.01)	175-3455	0.605^a	0.000
Placenta weight (grams)	592.02 (±128.31)	330-885	0.171	0.184

Variables of Fetal Attachments	Umbilical cord pulsatility time
Variables of Fetal Attachments	Mean (±sd)	SEM	Min-Max	p-value
Cord Circular
Yes	293.81(±48.00)	159.19	57 - 565	0.261^c
No	299.20 (±52.52)	328.00	40 - 1020	0.261^c
Placental location
Anterior	264.74 (±53.48)	297.76	40 - 1020	0.441^d
Posterior	255.45 (±54.55)	255.90	38 - 893
Fundal	198.60 (±99.35)	222.15	60 - 573
Lateral	953.00	-	-
Placental Maturity
Grade 0	458.92 (±104.93)	392.63	42 - 1005	0.189^d
Grade I	261.11 (±61.59)	253.98	49 - 1020
Grade II	215.37 (±54.21)	216.84	40 - 720
Grade III	163.50 (±99.80)	199.61	45 - 460

Maternal Variables	Mean (sd)	(Min-Max)	R	p value
Age (years)	21.54(±5.33)	13 - 39	0.009^b	0.948
Pregnancies	2.03 (±1.60)	1 - 9	-0.072^b	0.577
Births	0.83 (±1.33)	0 - 6	-0.127^b	0.325
Abortions	0.19 (±0.55)	0 - 2	0.027^b	0.834
Gestational Age (weeks)	39.72 (±.31)	37- 42.42	-0.177^a	0.168
UFH* (cm)	32.13 (±3.44)	21 - 40	-0.047^a	0.717
BMI† in the immediate postpartum	25.25 (±3.35)	19.2 - 32.8	-0.143^a	0.366
SBP‡ (mmHg)	127.24 (±12.77)	97-154	0.130^b	0.336
DBP§ (mmHg)	76.12 (±10.96)	50 - 91	0.155^b	0.248
SBP ‡ - DBP§ (mmHg)	50.94 (±10.81)	30 - 80	0.041^a	0.761

Neonatal Variables	Mean (±sd)	Mín. - Max	R	p value
Weight (grams)	3326.29 (±400.4)	2340 - 4200	-0.006^a	0.965
Length (cm)	50.52 (±2.37)	45 - 56	-0.008^b	0.948
Head circumference (cm)	33.83 (±1.17)	31 - 37	-0.038^b	0.731
Thoracic Perimeter (cm)	33.90 (±1.94)	30 - 38	0.046^a	0.723
Respiratory Rate (ripm*)	66.48 (±15.97)	35 - 100	-0.013^a	0.920
Heart Rate (bpm†)	139.41 (±15.31)	88 - 172	0.173^b	0.179
Somatic Capurro	279.61 (±12.01)	259 - 348	-0.054^a	0.675
Apgar score 1 min.	8.75 (±0.53)	7 - 9	0.076^b	0.560
Apgar score 5 min.	9.09 (±0.29)	9 - 10	0.119^b	0.357

[TFN1] Source: Research data, 2017.

[TFN2] ^a Pearson's Rô; ^b Spearman's Rô; Statistical significance with a p-value <0.05; * UCP - Umbilical Cord Pulsatility

Pulsatility of the umbilical cord in full-term natural childbirths

Pulsatilidad del cable umbilical en nacimientos a plazo normal