Objective To analyze the main reason of prolonged latency phase and the impact of prolonged latency phase on the delivery style. Methods The pregnant women with prolonged latency phase (n=92) and normal pregnant women (n=100) were retrospectively analyzed in the maternity department of the second affiliated hospital of Kunming medical college in 2007. Results There was no significant difference in the pelvis and fetal-pelvis in the two groups. The number of the pregnant women with fetal body weight (gt;4 000 g) in the prolonged latency phase group was obviously larger than that in the normal pregnant women group, with the significant difference. As to the situation of fetal position, there were more occipitoanterior positions and fewer occipitoposterior as well as occipitotransterse positions in the prolonged latency phase group (Plt;0.01). In the prolonged latency phase group, the pregnant women with normal delivery were fewer and the uterine-incision deliveries were more than those in the normal group, with the significant difference. Conclusion The prolonged latency phase prognosticates the incidence of dystocia. We should decide if the pregnant women have the tendency of prolonged latency phase before delivery and deal with it in time so as to prevent the occurrence of dystocia.
ObjectiveTo investigate the feasibility and effectiveness of using ultrasound to evaluate the internal mammary artery (IMA) and explore the related factors affecting the quality of IMA.MethodsFrom July 2020 to January 2021, for patients who underwent coronary artery bypass grafting at the Department of Cardiovascular Surgery, Fuwai Hospital, ultrasound was applied to measure bilateral IMA at the parasternal second intercostal space. There were 62 males and 18 females with an average age of 59.9±8.3 years. The clinical data of the patients were recorded and analyzed.ResultsA total of 160 IMA were measured. The IMA was detected in 99.4% (159/160), and the one that was not measured was proved to be occluded by enhanced CT. A total of 157 (98.1%) IMA intima were smooth, 2 (1.3%) were found to have uneven intimal thickening and less smooth, and only 1 (0.6%) was occluded. The intravascular diameter, peak systolic flow rate, peak diastolic flow rate, and blood flow rate of the left second intercostal IMA were 1.9±0.3 mm, 66.8±17.7 cm/s, 6.4 (0.0, 9.7) cm/s, 19.7±9.4 mL/min; and those of the right one were 2.1±0.3 mm, 69.7±18.5 cm/s, 6.0 (0.0, 9.2) cm/s and 22.8±11.5 mL/min, respectively. IMA vessel diameter and blood flow were greater on the right than those on the left side in the same individual (P<0.01). In univariate analysis, sex and body surface area were the factors that influenced the size of the IMA vessel among different individuals, and by linear regression analysis, the size of the IMA vessel was only related to body surface area among different individuals. On univariate analysis, diabetes mellitus was the only factor affecting IMA blood flow, with a mean reduction in blood flow of 18.4% (left) and 21.7% (right) in the diabetic group (P<0.05).ConclusionPreoperative evaluation of the IMA using ultrasound over the parasternal second intercostal space is easy, noninvasive, and has a high success rate. The internal diameter of the IMA is positively correlated with body surface area, and blood flow is significantly reduced in patients with diabetes.