The influence of Body Roundness Index on sensorial block level of spinal anaesthesia for elective caesarean section: an observational study

The association of interleukin-6, interleukin-27, and body roundness index with gestational diabetes mellitus

We aimed to investigate the relationship between GDM and IL-27, IL-6, and body roundness index (BRI), a new anthropometric measurement more sensitive than BMI in identifying obesity and predicting cardiometabolic outcomes. We enrolled 80 patients, 40 pregnant women with GDM and 40 healthy pregnant women at midgestation. The women's anthropometric measurements were recorded and serum markers and IL-6, IL-27 were analysed. At the time of delivery maternal, neonatal results were recorded. Women with GDM had significantly higher pregestational, midgestational and prepartum BMI and midgestational BRI; HOMA-IR; HbA1c; and IL-6 values and lower HDL values (p < .05). There was no statistically significant difference in IL-27 values between the groups (p = .939). In multivariate logistic regression analysis, HbA1c, IL-6 (>4.886 pg/mL), and BRI (>6.708) were found as independent risk factors associated with GDM (p < .05). Mean BRI was significantly associated with obesity (p < .001) and BRI higher than 6.708 was found to have 67.5% sensitivity and 80% specificity in the prediction of GDM. Women with GDM had elevated IL-6 levels, but no relationship was detected between IL-27 and GDM. BRI is a new anthropometric index that strongly correlated with BMI and seems to be a reliable alternative to BMI for the evaluation of obesity in GDM patients.IMPACT STATEMENTWhat's already known on this subject? Gestational diabetes mellitus (GDM) is the most common systemic disease in pregnancy. The risk of GDM was 3 times higher in obese pregnant women compared to normal weighted patients. IL-6 is an adipose-derived cytokine that was found to be associated with GDM. The body roundness index (BRI) is a new sensitive anthropometric index for detecting obesity and its secondary cardiometabolic results.What do the results of this study add? Our results showed that BRI was strongly correlated with obesity in GDM patients. HbA1c, IL-6 and BRI were found as independent risk factors associated with GDM. IL 27, a cytokine associated with inflammatory diseases, was not associated with GDM.What are the implications of these findings for clinical practice and/or further research? BRI could be a reliable alternative to BMI for the evaluation of obesity in pregnant women and predicting cardiometabolic outcomes.

Are body roundness index and a body shape index in the first trimester related to foetal macrosomia?

This study investigated the effectiveness of maternal Body Roundness Index (BRI), Body Shape Index (ASBI), and Visceral Adiposity Index (VAI) in predicting foetal macrosomia and small for gestational age (SFGA) babies in obese and non-obese pregnant women. This prospective trial included 168 pregnant women (99 obese and 69 non-obese). A logistic regression model was used to identify the independent risk factors of foetal macrosomia and SFGA. BRI, waist/hip ratio, HbA1c and HOMA-IR were found to be significantly associated with increased macrosomia risk in obese women (OR = 1.469, % CI: 1.126-1.917, p = .005; OR = 4.289, % CI: 0.178-1.030, p = .012, OR = 6.277, %Cl: 1.233-31.948, p = .027, and OR = 1.393, %Cl: 1.060-1.832, p = .017). The present study indicates that first-trimester BRI and waist/hip ratio may be powerful determinants in predicting foetal macrosomia in obese pregnant women.Impact statementWhat is already known on this subject? Obesity is a major risk factor for maternal and foetal morbidity and mortality. The rate of obesity continues to increase rapidly around the world. The accuracy of ultrasound in estimated foetal weight is reduced in obese pregnant women. The Body Roundness Index (BRI) is a new anthropometric index that shows body fat distribution.What do the results of this study add? Our results show that the BRI was an independent risk factor associated with foetal macrosomia in obese pregnant women.What are the implications of these findings for future clinical practice and/or further research? BRI measurements should be taken before pregnancy to help predict shoulder dystocia, GDM, FGR and foetal macrosomia in obese women.

Prediction of spinal anesthesia-induced hypotension during elective cesarean section: a systematic review of prospective observational studies

BACKGROUND

Spinal anesthesia is the standard for elective cesarean section but spinal anesthesia-induced hypotension remains an important problem. Accurate prediction of hypotension could enhance clinical decision-making, alter management, and facilitate early intervention. We performed a systematic review of predictors of spinal anesthesia-induced hypotension and their predictive value during cesarean section.

METHODS

PubMed, Embase, Cochrane Library, Google Scholar and Web of Science databases were searched for prospective observational studies assessing the diagnostic accuracy of predictors of spinal anesthesia-induced hypotension in elective cesarean section. The quality of studies was assessed and predictors were grouped in domains based on the type of predictor.

RESULTS

Thirty-eight studies (n=3086 patients) were included. In most studies, patients received 500-1000 mL crystalloid preload or 500-2000 mL crystalloid coload. Vasopressors for post-spinal hypotension were boluses of ephedrine 5-15 mg and/or phenylephrine 25-100 µg in most studies. The hypotension rate varied from 29% to 80% based on the definition. For analysis, >30 predictors were classified into seven domains: demographic characteristics, baseline hemodynamic variables, baseline sympathovagal balance, postural stress testing, peripheral perfusion indices, blood volume and fluid responsiveness indices, and genetic polymorphism.

CONCLUSIONS

Environmental and individual factors increased outcome variability, which restricted the value of the autonomic nervous system and peripheral perfusion indices for prediction of spinal anesthesia-induced hypotension. Supine stress tests may reflect parturients' cardiovascular tolerance during hemodynamic fluctuations and may optimize the predictive value of static state predictors. Future research for predicting spinal anesthesia-induced hypotension should focus on composite and dynamic parameters during the supine stress tests.