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Image: cesarean section
AP
Medical staff deliver a baby by cesarean section at a hospital in Mianyang in southwestern China's Sichuan province on Dec. 4, 2009.
updated 1/12/2010 5:45:40 PM ET 2010-01-12T22:45:40

Nearly half of all births in China are delivered by cesarean section, the world’s highest rate, according to a survey by the World Health Organization — a shift toward modernization that isn’t necessarily a good thing.

The boom in unnecessary surgeries is jeopardizing women’s health, the U.N. health agency warned in the report published online Tuesday in the medical journal The Lancet.

Unnecessary C-sections are costlier than natural births and raise the risk of complications for the mother, said the report surveying nine Asian nations. It noted C-sections have reached “epidemic proportions” in many countries worldwide.

The most dramatic findings were in China, where 46 percent of births reviewed were C-sections — a quarter of them not medically necessary, the report said.

“So many pregnant women ask for a cesarean birth in China, but we always suggest that they have a natural birth,” said Dr. He Yuanhua, at Capital Antai Obstetrics and Gynecology Hospital in Beijing, who did not participate in the study.

“It’s bad to have so many cesarean births because natural birth is the ideal way.”

The WHO, which reviewed nearly 110,000 births across Asia in 2007-2008, found 27 percent were done under the knife, partially motivated by hospitals eager to make more money.

That mirrors similar results reported by WHO in 2005 from Latin America, where 35 percent of pregnant women surveyed were delivering by C-section.

30 percent of U.S. births are C-sections
In the U.S., where C-sections are at an all-time high of 31 percent, the surgery is often performed on older expectant mothers, during multiple births or simply because patients request it or doctors fear malpractice lawsuits. A government panel warned against elective C-sections in 2006.

“The relative safety of the operation leads people to think it’s as safe as vaginal birth,” said Dr. A. Metin Gulmezoglu, who co-authored the Asia report. “That’s unlikely to be the case.”

Women undergoing C-sections that are not medically necessary are more likely to die or be admitted into intensive care units, require blood transfusions or encounter complications that lead to hysterectomies, the WHO study found.

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U.S. studies have shown babies born by cesarean have a greater chance for respiratory problems. The Asia survey found the procedure benefits babies during breech births.

Reasons for elective C-sections vary globally, but increasing rates in many developing countries coincide with a rise in patients’ wealth and improved medical facilities.

In Asia, some women opt for the surgery to choose their delivery day after consulting fortune tellers for “lucky” birthdays or times. Others fear painful natural births or worry their vaginas may be stretched or damaged by a normal delivery. Some women also prefer the operation because they mistakenly believe it is less risky.

“I think it’s safer for the mother and child to have C-sections, and the relatives feel more secure because it’s very simple and very common now,” said a Vietnamese woman, Trang Thanh Van, 25, just days away from giving birth to her first child. “People worry that using tools to pull the baby out (in a vaginal birth) may affect their brains.”

The Asian survey examined deliveries in 122 randomly selected public and private hospitals in 2007 and 2008 across Cambodia, China, India, Japan, Nepal, the Philippines, Sri Lanka, Thailand and Vietnam. The hospitals were located in capital cities and two other regions or provinces within each country, all logging more than 1,000 births a year.

China’s 46 percent C-section rate was followed by Vietnam and Thailand with 36 percent and 34 percent, respectively. The lowest rates were in Cambodia, with 15 percent, and India, with 18 percent.

Some hospitals motivated by higher fees
The study did not discuss specific reasons for the high number of C-sections, but it noted that more than 60 percent of the hospitals studied were motivated by financial incentives to perform surgeries.

At Vietnam’s National Hospital of Gynecology and Obstetrics in Hanoi, about 40 percent of the 20,000 babies delivered there annually are by C-section, said Dr. Le Anh Tuan, the hospital’s vice director, who did not participate in the study.

As the capital’s largest maternity hospital, it receives the most complicated cases, with many women undergoing emergency surgery. But he said another reason is women with small frames whose babies are simply too large for them to deliver naturally.

“The babies are bigger, even than in Western countries,” he said. “Vietnam was a country where we didn’t have enough food to eat. Now we have a surplus of food. The women think that if they eat a lot, their babies will be healthy.”

In Latin America, C-section rates in all eight countries surveyed earlier by WHO were 30 percent or higher — similar to the U.S. rate. In Paraguay, 42 percent of deliveries were by cesarean, and in Ecuador 40 percent.

Some expectant mothers in Latin America scheduled elective surgeries to avoid giving birth during holidays or even so they could attend parties, said Dr. Archana Shah, from the WHO in Geneva, who worked on that report and cautioned that data in both studies represent a sample that may not reflect overall national rates.

That compares to an earlier WHO survey of African countries, where C-sections were performed in only about 9 percent of deliveries surveyed and where many medical centers were ill-equipped to perform emergency surgeries, leading to increased deaths.

Copyright 2009 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.

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