Table 2 Detailed interventions and respiratory status of the infants at the time of CC in the examined groups.

From: Umbilical cord management in newborn resuscitation: a systematic review and meta-analysis

First author and year of publication

Timing of CC

Required resuscitation

Respiratory status

 

Timing of CC in the intervention group: planned; actual, (s)

Timing of CC in the control group: planned; actual, (s)

Deviation from the planned timing of CC in the intervention group, (%)

Deviation from the planned timing of CC in the control group, (%)

Type of required resuscitation in the intervention group

Type of required resuscitation in the control group

Deviation from the allocated intervention in the intervention group, (%)

Deviation from the allocated intervention in the control group, (%)

Spontaneous breathing babies before CC in the intervention group, (%)

Spontaneous breathing babies before CC in the control group, (%)

Andersson et al.30

DCC > 180; 187 [42–195]

ECC < 60; 25 [11–40]

NA

None

Bag and mask ventilation

Bag and mask ventilation

None

None

NA

time to regular breathing (s): 78 [67–155]

NA

time to regular breathing (s): 356 [98–389]

Finn et al.29

DCC at 60

ICC < 20

None

None

Vast majority received CPAP (or more)

Vast majority received CPAP (or more)

14% Did not receive ICR

None

Spontaneous respirations at 60 s: 85,7%

Spontaneous respirations at 60 s: 66.7%

Katheria et al.31

DCC at 60; appr. 65

DCC at 60; appr. 65

5% Received ECC

5% Received ECC

CPAP only (44%), PPV (59%), intubation (36%)

CPAP only (NA), PPV (69%), intubation (44%)

NA

NA

CS: 92%, vaginal delivery: 100%, all: 93%

CS: 90%, vaginal delivery: 84.61%, all: 89%

Knol et al.33

PBCC (CC when HR > 100 bpm and SpO2 > 90% while using FiO2 < 40%); 349 ± 157

DCC at 30–60; 62 ± 30

None

None

CPAP (90%), PPV (70%), intubation (5%)

CPAP (100%), PPV (58.8%), intubation (0%)

10% Did not receive ICR

None

NA

time to stabilization (regular spontaneous breathing, HR ≥ 100 bpm, SpO2 > 90% while FiO2 < 0,4) (s): ITT: 354 ± 147, as treated: 325 ± 95

NA

time to stabilization (regular spontaneous breathing, HR ≥ 100, SpO2 > 90 while FiO2 < 0,4) (s): ITT: 427 ± 174, as treated: 445 ± 190

Nevill et al.32

DCC at 50

DCC at 50

5% Received ECC

9% Received ECC

CPAP (25%), IPPV (60%,) intubation (16%), chest compression (5%), adrenalin (0%)

CPAP (30%), IPPV (45%), intubation (21%), chest compression (12.5%), adrenalin (3.6%)

1 Case (1.8%) wrong intervention received

No increase in the number of spontaneously breathing infants in the intervention vs. control group at 60 s

Raina et al.34

DCC at least 180 s or when the neonate exhibited spontaneous breathing whichever was later with a maximum of 5 min; 180 [180–180]

ECC < 30; 20 [15–20]

24% Received CC < 180 s

None

PPV (100%), intubation (7%), chest compression (0%), adrenalin (0%)

PPV (100%), intubation (8.8%), chest compression (2.2%), adrenalin (1.1%)

None

None

All

None

  1. mean ± SD; median [IQR].
  2. CC cord clamping, s second(s), min minute(s), DCC delayed cord clamping, ECC early cord clamping, ICC immediate cord clamping, PBCC physiological-based cord clamping, CPAP continuous positive airway pressure, PPV positive pressure ventilation, IPPV intermittent positive-pressure ventilation, ICR intact cord resuscitation, CS cesarean section, HR heart rate, bpm beat per minute, SpO2 oxygen saturation level, FiO2 fraction of inspired oxygen, ITT intention-to-treat analysis, NA not available.