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Litlir fyrirburar á Íslandi : heilsufar og þroski

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Authors
Ingibjörg Georgsdóttir
Evald Sæmundsen
Ingibjörg Símonardóttir
Jónas G. Halldórsson
Snæfríður Þ. Egilson
Þóra Leósdóttir
Brynhildur Ingvarsdóttir
Einar Sindrason
Atli Dagbjartsson
Issue Date
2003-07-01

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Extremely Low Birthweight Infants in Iceland. Health and development
Citation
Læknablaðið 2003, 89(7-8):575-81
Abstract
Objective: Survival of extremely low birthweight infants (BW<1000g) in Iceland has increased in recent years, especially since the availability of surfactant therapy for Respiratory Distress Syndrome of Prematurity. This study was part of a geographically defined national study on survival, health, development and longterm outcome of extremely low birthweight (ELBW) infants in Iceland focusing on health, development and disabilities with reference to a control group. Material and methods: Information from the National Birth Registry on births in Iceland of ELBW infants weighing 500-999g was collected in two periods 1982-90 and 1991-95, before and after surfactant therapy became available. Information on pregnancy, birth, diseases in the newborn period and later health problems was collected from hospital records. The ELBW infants born in 1991-95 and matched control children were enrolled to a prospective study on longterm health and development. The children undervent medical examinations and developmental testing at 5 years of age in 1996-2001. Comparison was made between the two groups of ELBW infants and between ELBW infants and control children born in 1991-95. Results: In 1982-90 the longterm survival of ELBW infants at 5 years of age was 22% and 52% in 1991-95. In both periods 1982-90 and 1991-95 similar data was found on ELBW infants regarding mothers health, pregnancy, birth and neonatal period. Difference was found in maternal age being significantly higher (p=0.02) and significally more deliveries by cesarian section (p=0.02) in the latter period. The two groups of ELBW infants were similar regarding sex, birthweight and diseases in the newborn period. Comparison between 35 ELBW infants and 55 control children born 1991-95 showed that significantly more mothers of ELBW children smoked during pregnancy (p=0.003) and suffered from various diseases (p=0.001). More ELBW children were born by cesarian section (p=0.001) than control children and their parents reported more longterm health problems regarding astma (p=0.001), convulsions (p=0.001), difficulties in swallowing (p=0.001) and weight gaining (p=0.005). At five years of age significantly more ELBW children born in 1991-95 compared to control children had abnormal general physical examination (p=<0.001), neurological examination (p=<0.001) and motor skills (p=<0.001). Scores on developmental testing were significantly lower (p=0.002). The proportion of ELBW children with disabilities was 16% in 1982-90 and 14% in 1991-95. Conclusions: The two groups of ELBW infants born in 1982-90 and 1991-95 are similar regarding problems during pregnancy, birth and newborn period. The proportion of children with disabilities is similar in both periods although survival was significantly increased. When compared to matched control children, ELBW children born in 1991-95 suffer significantly more longterm health and developmental problems.
Inngangur: Lífslíkur lítilla fyrirbura með fæðingarþyngd <1000 g hafa aukist verulega hin síðari ár einkum eftir að notkun lungnablöðruseytis (surfactants) við glærhimnusjúkdómi (Hyalin Membrane Disease/ HMD) varð almenn. Hluti þessara barna glímir við langvinn og alvarleg heilsuvandamál. Tilgangur rannsóknarinnar ,,Fyrirburar - langtímaeftirlit með heilsu og þroska" var að varpa ljósi á lífslíkur, heilsufar, þroska og langtímahorfur lítilla fyrirbura á Íslandi í samanburði við fullburða jafnaldra og fjallar þessi hluti hennar um heilsufar, þroska og fötlun. Efniviður og aðferðir: Aflað var upplýsinga úr tölvuskrá Fæðingarskráningar Ríkisspítala um fæðingar lítilla fyrirbura sem vógu 500-999 g og fæddust á tveimur tímabilum, 1982-90 og 1991-95, fyrir og eftir að notkun lungnablöðruseytis varð almenn. Leitað var að upplýsingum varðandi meðgöngu, fæðingu, sjúkdóma á nýburatíma og síðari heilsufarsvandamál í sjúkraskrám. Fyrirburar áranna 1991-95 og jafnaldra samanburðarbörn tóku þátt í framskyggnri rannsókn á heilsu og þroska. Börnin komu til skoðunar við rúmlega fimm ára aldur á árunum 1996-2001 og gengust undir þroskamælingar. Við úrvinnslu var annars vegar gerður samanburður á fyrirburahópunum tveimur og hins vegar samanburður á fyrirburum og samanburðarbörnum áranna 1991-95. Niðurstöður: Á árunum 1982-90 lifðu 22% af lifandi fæddum litlum fyrirburum við 5 ára aldur og 52% á seinna tímabilinu 1991-95. Á báðum tímabilum fengust svipaðar upplýsingar um fyrirburamæður, meðgöngu og fæðingu lítilla fyrirbura. Marktækur munur var hvað varðar hærri aldur mæðra (p=0,02) og fjölda fæðinga með keisaraskurði á seinna tímabilinu (p=0,02). Ekki var marktækur munur milli fyrirburahópanna hvað varðar kyn, fæðingarþyngd eða sjúkdóma á nýburatíma. Samanburður milli 35 fyrirbura og 55 samanburðarbarna áranna 1991-95 leiddi í ljós að fleiri mæður fyrirbura reyktu (p=0,003) og glímdu við sjúkdóma á meðgöngu (p=<0,001) og að fleiri fyrirburar fæddust með keisarskurði (p=0,001). Marktækur munur var á heilsufari fyrirbura og samanburðarbarna hvað varðar asma (p=<0,001), krampa (p=<0,001), kyngingarerfiðleika (p=0,001) og erfiðleika með að þyngjast (p=0,005). Athugun við fimm ára aldur leiddi í ljós að miðað við samanburðarbörn voru marktækt fleiri fyrirburar áranna 1991-95 með frávik við almenna skoðun (p=<0,001), taugalæknisfræðilega skoðun (p=<0,001) og við mat á hreyfifærni (p=<0,001). Niðurstöður þroskamælinga voru marktækt lægri (p=0,002). Svipað hlutfall fyrirbura var með fötlun á báðum tímabilum, 16% árin 1982-90 og 14% árin 1991-95. Ályktun: Fyrirburahópar áranna 1982-90 og 1991-95 voru svipaðir hvað varðar heilsufar á meðgöngu, fæðingu og sjúkdóma eftir fæðingu. Hlutfall barna með fötlun var svipað á báðum tímabilum þrátt fyrir marktækt aukna lifun. Samanburður lítilla fyrirbura áranna 1991-95 við jafnaldra samanburðarbörn sýndi að litlir fyrirburar voru með marktækt meiri heilsufarsvandamál og þroskafrávik.
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