7. Niet vorderende ontsluiting ...................................................................................................................... 72
7.1 In partu ........................................................................................................................................................ 72
7.2 De fasen van de ontsluiting ......................................................................................................................... 73
7.3 De definitie van NVO ................................................................................................................................... 74
2
, 7.4 Langdurige ontsluiting en complicaties ....................................................................................................... 75
7.5 Oorzaken van NVO tijdens de latente fase .................................................................................................. 76
Iatrogene oorzaak ......................................................................................................................................... 76
Weerstand van de cervix .............................................................................................................................. 76
Inadequate uterusactiviteit .......................................................................................................................... 76
Pijn en angst.................................................................................................................................................. 77
Overgewicht .................................................................................................................................................. 77
7.6 Oorzaken van NVO tijdens de actieve fase .................................................................................................. 77
Inadequate uterusactiviteit .......................................................................................................................... 77
Uitputting ...................................................................................................................................................... 78
Volle blaas ..................................................................................................................................................... 79
Infecties ........................................................................................................................................................ 79
Wanverhouding ............................................................................................................................................ 79
7.7 Interventies bij niet vorderende ontsluiting................................................................................................. 80
7.8 Het beleid van de verloskundige in een stroomdiagram ............................................................................. 81
Het eerste bezoek ......................................................................................................................................... 81
De latente fase .............................................................................................................................................. 81
De actieve fase .............................................................................................................................................. 82
8. Serotiniteit, meconiumhoudend vruchtwater en inleiden ......................................................................... 82
8.1 Serotiniteit ................................................................................................................................................... 82
Incidentie ...................................................................................................................................................... 82
Risicofactoren ............................................................................................................................................... 82
Prognose voor de moeder ............................................................................................................................ 83
Prognose voor de foetus/neonatus .............................................................................................................. 83
Beleid ............................................................................................................................................................ 83
Preventie ....................................................................................................................................................... 84
8.2 Meconiumhoudend vruchtwater ................................................................................................................. 84
Neonatale risico’s ......................................................................................................................................... 84
Risicofactoren MAS ....................................................................................................................................... 85
Preventie MAS .............................................................................................................................................. 85
Behandeling MAS .......................................................................................................................................... 85
Beleid meconiumhoudend vruchtwater ....................................................................................................... 85
8.3 Inleiden ........................................................................................................................................................ 85
Definitie ........................................................................................................................................................ 85
Maternale gevolgen ...................................................................................................................................... 86
Neonatale gevolgen ...................................................................................................................................... 87
De verschillende inleid mogelijkheden ......................................................................................................... 88
, 10.5 Voorwaarden voor vacuüm- of forcipale extractie .................................................................................... 94
10.6 Voor- en nadelen vacuüm vs forceps ......................................................................................................... 95
10.7 Complicaties .............................................................................................................................................. 95
Neonatale complicaties ................................................................................................................................ 95
Infecties ........................................................................................................................................................ 96
Maternale complicaties ................................................................................................................................ 96
10.8 Forceps ...................................................................................................................................................... 97
Techniek van een forcipale extratie .............................................................................................................. 97
10.9 Vacuümextractie ....................................................................................................................................... 98
Materiaal....................................................................................................................................................... 98
Vorm ............................................................................................................................................................. 98
Afmeting ....................................................................................................................................................... 99
Vacuümdruk.................................................................................................................................................. 99
Techniek bij een vacuümextractie ................................................................................................................ 99
Oorzaken van mislukken van vacuümextractie .......................................................................................... 100
Beleid na vacuümextraxtie ......................................................................................................................... 100
11. Sectio .................................................................................................................................................... 101
11.1 Incidentie ................................................................................................................................................. 101
11.2 Perioperatieve fase.................................................................................................................................. 101
Counseling .................................................................................................................................................. 101
Preoperatieve onderzoeken ....................................................................................................................... 101
Antibiotica................................................................................................................................................... 101
Tromboseprofylaxe ..................................................................................................................................... 102
Preventie van nabloeding ........................................................................................................................... 102
Maternale positionering ............................................................................................................................. 102
Blaaskatheterisatie ..................................................................................................................................... 102
Placentalokalisatie ...................................................................................................................................... 102
11.3 Anesthesie ............................................................................................................................................... 103
Regionale anesthesie .................................................................................................................................. 103
Algehele anesthesie .................................................................................................................................... 103
Lokale anesthesie........................................................................................................................................ 103
Adipositas als een extra risicofactor bij sectio ............................................................................................ 103
11.4 Operatieve aspecten................................................................................................................................ 104
Openen van de buikwand ........................................................................................................................... 104
Geboorte van het kind ................................................................................................................................ 106
Geboorte van placenta ............................................................................................................................... 106
11.5 ‘Gentle-cesarean’-techniek...................................................................................................................... 107
11.6 Maternale complicaties ........................................................................................................................... 107
Niche vorming ............................................................................................................................................. 107
12. Foetale bewaking .................................................................................................................................. 109
12.1 De foetale hartfrequentie ........................................................................................................................ 109
Veranderingen in de hartfrequentie ........................................................................................................... 109
Hartfrequentie tijdens de bevalling ............................................................................................................ 110
12.2 Foetale bewaking .................................................................................................................................... 111
Basishartfrequentie .................................................................................................................................... 112
Variabiliteit ................................................................................................................................................. 112
Acceleraties................................................................................................................................................. 113
Deceleraties ................................................................................................................................................ 113
Registratie van contracties ......................................................................................................................... 115
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