Lecturing in an online environment needs consideration for the target audience and technology capabilities. When I present healthcare related topics, integrating problem-based learning within the lecture is a wonderful way to optimally reach my audience. I also must understand the limitations of the technology I'm working with. Al-Azri and Ratnapalan (2014) noted that online problem-base learning is a great means of presenting continuing medical education.
Reference
Al-Azri, H., & Ratnapalan, S.(2014). Problem-based learning in continuing medical education: Review of randomized controlled trials. Can Fam Physician. 60(2):157-65.