![]() ![]() Some features of a patient can help to distinguish between the acute small bowel and colonic ischemia. Abdominal pain is the most common symptom in patients with intestinal ischemia. The rest of the causes are related to colonic ischemia and CMI. An acute decrease in mesenteric arterial blood flow accounts for 60% to 70% of patients with mesenteric ischemia. The superior mesenteric vein drains the areas supplied by SMA, and an inferior mesenteric vein drains the left side of the colon and the rectum. The colon venous drainage is the parallel of arterial supply. Watershed areas account for about 70% of ischemic colitis cases. These areas mostly supplied by the marginal artery however, in 50% of the population, this artery is poorly developed. Splenic flexure is the area between SMA and IMA supplies, and the rectosigmoid junction is the region between the IMA and the superior rectal artery supplies. ![]() These are also known as the 'watershed' areas, which mean the regions in the colon between 2 major arteries that supplying colon. Two main areas in the colon, including splenic flexure (Griffiths point) and rectosigmoid junction (Sudek's point), are prone to ischemia. Bowel ischemia can be classified as small intestine ischemia, which is commonly known as mesenteric ischemia and large intestine ischemia, which generally referred to as colonic ischemia. The celiac artery also has collaterals to supply the intestine. The IMA supplies a large intestine from the distal one-third of the transverse colon to the rectum. The SMA supplies the bowel from the lower part of the duodenum to two-third of the transverse colon. ![]() The intestine is mainly supplied by 2 major arteries, which include the superior mesenteric artery (SMA) and the inferior mesenteric artery (IMA). This is an uncommon medical condition, but it has a high mortality rate. You’ll have to convert your slides to PDF if you use this latter approach though.Bowel ischemia can affect a small or large intestine and can occur by any cause, which leads to intestinal blood flow reduction. You can flick between tabs seamlessly to display slides, research papers and videos. If you want more resources, use office 365 online and share the browser application through Zoom. Then project the screen in the lecture theatre as you would normally do. You then share the PowerPoint application on Zoom and position the chatbox and annotate tools around the slide show. If you’re using PowerPoint slides, then you’ll need to set up the slide show, so it doesn’t take over your screen (see the video below). Now for the practical bit you deliver the lecture in the lecture theatre to those attending. It’s a fantastic way to check your students are with you, and you get some honest instant feedback without the distraction and delays that come with fiddling around with different apps. Don’t underestimate the power of the chatbox. Everyone can interact with the lecturer using the chatbox or even draw on the slides. Those who can’t attend in-person, or don’t want to travel to campus for a single lecture, can join from home. Students can attend the lecture on campus or from home. Deliver the lecture online from in the lecture theatre. The answer is the “Flexture” (see video below). If you post your lecture material online, how will you have a meaningful interactive session on campus? If you split 200 students into groups of twenty, you’ll have to deliver ten sessions it’s just not feasible. So when it comes to large lectures, we have a problem they’re more interactive online, but the students want to be on-campus. Students want to be learning together on-campus they don’t want to be holed up in their rooms watching videos all day. Online is a valuable learning environment, but it’s important to get the balance right between the different pedagogies. So why are you being asked to do the interactive bit on campus? Social learning is an important part of university education. Any experienced online teacher will tell you that it’s easier to interact with students online than in a lecture theatre. Shy students are more likely to post in a chat box or click on a poll than speak in front of hundreds of their peers. Every student has a front-row seat in an online lecture. Surely interactive sessions to large groups of students are best delivered online. If your audience is large, say 200 or more, you might be wondering just how you’re going to do this. If you teach in higher education, then you might have been asked to turn your lectures into bite-size videos and deliver some kind of interactive session to your students on campus next year. ![]()
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