A longitudinal study about the correlation of cervical length and preterm delivery
	    		
		   		
		   			
		   		
	    	
    	 
    	10.3760/cma.j.issn.1008-1372.2018.07.019
   		
        
        	
        		- VernacularTitle:宫颈长度与二胎早产相关性的纵向研究
 
        	
        	
        	
        		- Author:
	        		
		        		
		        		
			        		Jiang GUO
			        		
			        		
			        		
			        			1
			        			
			        		
			        		
			        		
			        		
			        		;
		        		
		        		
		        		
			        		Dacong ZHAO
			        		
			        		;
		        		
		        		
		        		
			        		Qian YE
			        		
			        		;
		        		
		        		
		        		
			        		Lan ZHU
			        		
			        		;
		        		
		        		
		        		
			        		Dong ZHENG
			        		
			        		
		        		
		        		
		        		
		        		
		        			
			        		
			        		Author Information
			        		
		        		
		        		
			        		
			        		
			        			1. 635000,四川省达州市中西医结合医院功能科
			        		
		        		
	        		
        		 
        	
        	
        	
        	
        		- Keywords:
        			
	        			
	        				
	        				
			        		
				        		Vagina/US;
			        		
			        		
			        		
				        		Cervical length measurement;
			        		
			        		
			        		
				        		Premature birth
			        		
			        		
	        			
        			
        		
 
        	
            
            
            	- From:
	            		
	            			Journal of Chinese Physician
	            		
	            		 2018;20(7):1029-1031
	            	
            	
 
            
            
            	- CountryChina
 
            
            
            	- Language:Chinese
 
            
            
            	- 
		        	Abstract:
			       	
			       		
				        
				        	Objective To investigate the correlation between cervical length and preterm birth rate in pregnant women with cervical shortening.Methods A group of pregnant women who had had two children in our hospital were included.Both lengths of 24-28 weeks were measured by transvaginal ultrasound during both pregnancies.According to the length of the cervix measured by the vagina during the first trimester and whether it is full-term production,it can be divided into the cervical shortening full-term group,the cervical shortening premature delivery group,the normal cervical full-term group (control group),and the clinical and ultrasound measurements are statistically analyzed.Results The cervical shortening in the preterm group and the cervical shortening in the full-term group were more likely to have cervical reduction in the second pregnancy than in the normal cervical full-term group (P < 0.05).The rate of spontaneous preterm birth in the second trimester of the cervix shortened in the preterm group was the highest (P < 0.05).There was no significant difference in the preterm birth rate of the second pregnancy between the normal uterine cervix group and the cervical shortened term group (P > 0.05).Conclusions In the pregnant women with cervical shortening,cervix shortening occurs.Whether the first child is full-term is the key factor in predicting the second premature birth rate.