Topics (384k) Articles (398k) Users (410) Discussions (242) Comments (383) Files (13k) New article
Obstruction of a pulmonary artery by transported material, usually a blood clot. It can impair perfusion of ventilated lung and increase right-heart load, connecting a vascular event with respiratory and circulatory effects.
Narrowing of the aortic valve opening that impedes outflow from the left ventricle. The resulting pressure load connects a valvular obstruction with ventricular remodeling and possible reduction of effective forward flow.
Persistently elevated arterial blood pressure under a specified measurement framework. A single value varies with conditions, while long-term pressure burden affects vessels and organs through sustained mechanical and physiological stress.
A respiratory disorder of newborns associated especially with insufficient pulmonary surfactant. Increased tendency of small air spaces to collapse connects a molecular deficiency with impaired lung expansion and gas exchange.
A controlled reduction or loss of sensation, sometimes with unconsciousness depending on its form. Local anaesthesia and general anaesthesia act at different levels and should not be treated as the same physiological state.
Interventions intended to restore or support vital physiological functions. The relevant failure may involve blood circulation, breathing or another immediate threat; improvement in one measurement does not alone establish recovery of every organ.
A superficial skin condition associated with Malassezia overgrowth. It differs in transmission from dermatophyte ringworm.
An immune-mediated cause of patchy hair loss. Historical “tinea decalvans” cannot be assumed to denote a proven fungal infection.
Expectoration of blood from the lower respiratory tract, distinguished from haematemesis. The immediate danger can be airway obstruction.
Tuberculosis affecting the lung.
Impaired passage through the gastrointestinal tract. Mechanical blockage and impaired movement are different mechanisms, so a distended organ alone does not establish an anatomical barrier.
Pinned article: Introduction to the OurBigBook Project
Welcome to the OurBigBook Project! Our goal is to create the perfect publishing platform for STEM subjects, and get university-level students to write the best free STEM tutorials ever.
Everyone is welcome to create an account and play with the site: ourbigbook.com/go/register. We belive that students themselves can write amazing tutorials, but teachers are welcome too. You can write about anything you want, it doesn't have to be STEM or even educational. Silly test content is very welcome and you won't be penalized in any way. Just keep it legal!
Intro to OurBigBook
. Source. We have two killer features:
- topics: topics group articles by different users with the same title, e.g. here is the topic for the "Fundamental Theorem of Calculus" ourbigbook.com/go/topic/fundamental-theorem-of-calculusArticles of different users are sorted by upvote within each article page. This feature is a bit like:
- a Wikipedia where each user can have their own version of each article
- a Q&A website like Stack Overflow, where multiple people can give their views on a given topic, and the best ones are sorted by upvote. Except you don't need to wait for someone to ask first, and any topic goes, no matter how narrow or broad
This feature makes it possible for readers to find better explanations of any topic created by other writers. And it allows writers to create an explanation in a place that readers might actually find it.
Figure 1. Screenshot of the "Derivative" topic page. View it live at: ourbigbook.com/go/topic/derivativeVideo 2. OurBigBook Web topics demo. Source. - local editing: you can store all your personal knowledge base content locally in a plaintext markup format that can be edited locally and published either:This way you can be sure that even if OurBigBook.com were to go down one day (which we have no plans to do as it is quite cheap to host!), your content will still be perfectly readable as a static site.
- to OurBigBook.com to get awesome multi-user features like topics and likes
- as HTML files to a static website, which you can host yourself for free on many external providers like GitHub Pages, and remain in full control
Figure 2. You can publish local OurBigBook lightweight markup files to either OurBigBook.com or as a static website.
Figure 3. Visual Studio Code extension installation.
Figure 5. . You can also edit articles on the Web editor without installing anything locally. Video 3. Edit locally and publish demo. Source. This shows editing OurBigBook Markup and publishing it using the Visual Studio Code extension. 
- Infinitely deep tables of contents:
All our software is open source and hosted at: github.com/ourbigbook/ourbigbook
Further documentation can be found at: docs.ourbigbook.com
Feel free to reach our to us for any help or suggestions: docs.ourbigbook.com/#contact