कंधे की प्रस्तुति (shoulder presentation/अनुप्रस्थ स्थिति) के एक नैदानिक मामले में, भ्रूण के दिल की धड़कन आमतौर पर माँ के किस स्थान पर सबसे अच्छी तरह सुनी जाती है?

After delivery of the fetal head, the baby's head retracts back against the perineum, producing the classic 'turtle sign.' Which obstetric emergency does this indicate?

A woman in labor is diagnosed with a fetal lie in which the longitudinal axis of the fetus is perpendicular to or does not coincide with that of the mother. Which malpresentation does this describe?