Plastic food containers are being used popularly, generating a waste of about 115 million tons in Vietnam. Such waste is causing environmental and health issues. This study conducted a eld survey with 309 local people and selected 59 samples out of 135 plastic food containers collected in Go Vap district, Vietnam. Collected plastic samples identi ed compositions were PET 13.6 %, PP 28.8 %, PS 16.9 %, and 40.7 % X. Although most people are aware of the toxicity of plastics, plastics are still widely used due to their convenience and price with easy use and purchase. Collected plastic samples were classi ed based on the plastic type using recycling code and quantitatively analyzed with X-ray uorescence spectroscopy method to assess concentrations of Cd, Sb, Pb, Hg, Sn, Cr, Br, Cl, and S. Most of these collected plastic samples (91.5 %) were found to contain 8/9 hazardous substances and most elements contained in these plastics were below their standard thresholds. However, elements Cl and Sb exceeded their safe thresholds, reached the highest concentrations of 1990.3 ppm and 469.2 ppm, respectively. Thus, additional health risks need to be assessed using the USEtox model. Finally, this study proposed a screening process to assess the risk of toxicity of elements contained in plastic food containers through ISO 31000:2018.

The study purposed to evaluate the success rate of cervical ripening using dinoprostone controlled-release vaginal insert and reveal some factors relating to successful cervical ripening. Methods: This cross-sectional study was conducted at Tu Du Hospital in Vietnam from December 2021 to August 2022. The study enrolled 200 pregnant women with gestational age ≥37 weeks diagnosed with oligohydramnios. These candidates underwent dinoprostone cervical ripening (DCR) according to the local protocol. The Bishop score ≥7 after 24 h was determined for the successful cervical ripening (SCR). Results: In total, the success rate of DCR achieved at 57.5% and the cesarean delivery rate was 46.5%. None of the severe side-effects and complications was present. Using multivariable logistic regression, the study found that the body mass index ≥25 kg/m 2 and oxytocin infusion drip related to SCR with adjusted odds ratio (aOR): 3.67 (95% confidence intervals [CI]: 1.78-7.57) and aOR: 4.68 (95% CI: 1.84-11.93), p < 0.001. Using the Kaplan-Meier curve, the present study revealed a significant difference between Bishop <3 and ≥3 following the duration time of cervical ripening, with hazard ratio: 1.38 (95% CI: 1.19-1.59), p < 0.001. The time duration of cervical ripening was not significantly different following amniotic fluid index from 3 to 5 cm. Conclusions: Cervical ripening using a dinoprostone vaginal insert is a potentially acceptable method in term pregnancy accompanying with oligohydramnios. The probability of SCR can be predicted on a careful assessment of relative factors by obstetricians. Further studies are required to strengthen these findings.

Background: Oligohydramnios is one of the most common cause results in poor outcomes and induction of labor (IOL) remains an appropriately intervetional procedure for reducing the fetal mortality in term pregnancy. The primary purpose to evaluate the successful rate and materno-fetal adverse events by IOL using dinoprostone. The secondary purpose was to reveal some factors relating to successful IOL. Methods: This prospective study was conducted at T.D. Hospital from December 2021 to August 2022. The study enrolled 200 pregnant women of gestational age ≥ 37 weeks with oligohydramnios who underwent IOL by using dinoprostone. The Bishop score after 24 hours of IOL ≥ 7 is determined for evaluating the successful IOL. Results: The successful rate of IOL by dinoprostone was achieved at 57.5% and cesarean delivery rate was 46.5%. None of the severe side-effects and complications was present. Using multivariable logistic regression, the study found that BMI ≥ 25 kg/m2 and oxytocin augmentation related to success IOL with aOR: 3.67 (95% CI: 1.78-7.57) and aOR:4.68 (95% CI: 1.84-11.93), p < 0.001. Using the Kaplan-Meier curve, the present study revealed a significant difference between Bishop < 3 and ≥ 3 following the duration time of IOL, with HR: 1.38 (95% CI: 1.19-1.59), p < 0.001. The duration time of IOL was not significantly different following AFI from 3 to 5 cm. Conclusions: IOL by Dinoprostone is an acceptable procedure in term-pregnnacy accompanying with oligohydramnios. Predicting the success of IOL relating to some clinical factors can be evaluated by obstetricians.