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父母作伴有助早产儿尽早发声

所属:生活杂谈 来源:reuters 阅读:2566 次 评论:0 条 [我要评论]  [+我要收藏]

小编摘要:人们普遍认为早产儿的语言习得能力要比普通孩子慢。早产儿所处的语言环境正是重要原因之一。研究表明,父母多和孩子在一起,与他们对话聊天,有助于早产儿语言能力的培养。

导读:研究表明,当父母和婴儿对话时,即便是弱小的早产儿也能够发声。人们普遍认为早产儿的语言习得能力要比普通孩子慢。这一观点主要基于各种原因,例如新生儿的健康问题等。但事实上早产儿所处的语言环境也是重要因素之一。

虽然早产儿出生后听到的声音与他们后期发声的能力是否相关尚未可知,但早产儿在新生儿加强监护病房的语言环境和普通婴儿在母亲腹中所感受的语言环境显然大不相同。在腹中婴儿听到的声音主要来自母亲,而早产儿在加强监护病房所听到的更多的是机器的声音,而不是人们的谈话。

研究还发现,当父母和婴儿对话时,婴儿发声的频率更高。所以医生建议,父母应和婴儿多一些谈话,多亲近他们,即便是早产儿,其语言能力也会有很大提升。

Even tiny preemies hospitalized after birth can make baby sounds -- especially when their parents are talking to them, a small study suggests.

Very premature babies are known to be slower-than-average in picking up language skills. That can be due to various reasons, including health problems they may have as newborns.

It's not known whether the sounds preemies hear soon after birth, and their own ability to vocalize, are related to their later language development. But premature infants who spend their early days in the neonatal intensive care unit (NICU) are in a much different sound environment than they would be if still in the womb, said Dr. Melinda Caskey, a pediatrician at Women and Infants Hospital in Providence, Rhode Island, and the lead researcher on the new study.

In the womb, mom's voice is the most prominent sound, Caskey said. In the NICU, the beeps and whirs of medical equipment abound.

Until now, though, no studies had looked at how much language NICU preemies hear during their day.

Caskey's team found that in their hospital NICU, it was surprisingly little -- with monitor sounds, general noise and silence being much more common.

"It's very striking," Caskey told Reuters Health, "especially when you compare that with what the fetus hears."

What's more, the study found, when preemies were hearing adults talk -- their parents, in particular -- they were more vocal themselves. That usually meant making short vowel sounds.

The significance of those vocalizations is not clear, according to Caskey. She and her colleagues are continuing to follow the infants to see whether their NICU language exposure and vocalizations are related to their language development later on.

If they are, Caskey said, "we would need to do a language intervention."

"We'd want both parents and nurses to talk to the infants more in their daily interactions," she said.

The findings, reported in the journal Pediatrics, are based on 36 very preterm infants -- born, on average, during the 27th week of pregnancy. (Pregnancy normally lasts about 40 weeks.)

The researchers outfitted each baby with a vest that carried a digital recording device. The recorder captured environmental sounds and the infants' own vocalizations over two 16-hour periods -- at what would have been the 32nd and 36th weeks of pregnancy.

Caskey's team found that the infants were already able to make vocalizations at week 32 -- or eight weeks before what had been their due date.

And they were more likely to make those vocalizations when their parents were visiting, with baby sounds going up by as much as 129 percent.

"When a parent was there, the number of vocalizations went way up," Caskey said. The babies also showed more "conversational turns" -- where their vocalizations came within seconds of the parent speaking.

At week 32, the infants were also more vocal when their parents were feeding them, versus when a nurse was. By week 36, that difference disappeared; that might be because by that time, the nurses had formed a relationship with the infants, the researchers speculate.

Overall, though, the NICU infants heard little language, Caskey said. It accounted for only two percent to five percent of the total recorded sounds, her team found.

While the study focused only on one NICU, Caskey said the environment of other NICUs is likely to be similar.

She noted, though, that the NICU in her hospital has changed since the time of the study. Now infants are in separate rooms and parents can be there 24 hours a day. That might mean more time for parent-infant "conversations."

The ultimate impact on preemies' language development is not known yet. But Caskey said the findings highlight the "dearth of language" in the NICU.

With an older child or adult, she noted, doctors and nurses would not walk into the room without speaking to the patient. So they can start to look at their NICU patients the same way.

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2011-10-24 12:10 编辑:claudiaenglish
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