September 2018

Introduction

Pneumonia in Adults5 Chapters

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Brett B. -

Great episode as always! Just one minor point I'd like to make. Low total CO2 on the chemistry does not necessarily mean acidosis. Of course we would need a blood gas to determine the acid base status. I am definitely not saying the patient needs a blood gas, but we cannot honestly comment on how the low total CO2 relates to his pH as he may be compensating for a respiratory alkalosis - which is definitely plausible given the clinical scenario of pneumonia.

Robert O., M.D. -

I am noting a minor error in this content.

There was a comment that S. pneumoniae, if inspected by gram stain, appeared as gram positive cocci "in clusters", whereupon the histology teaching assistant within me cringed. The origin of the word "streptococcus" is from the Greek "streptos" or "twisted" and "kokkos" or "berries", referring to the appearance as twisted chains of berries on a string.

Contrast this with staphylococcus, which is from the Greek "staphyle", or "bunch of grapes", as it appears as clusters on gram stain.

https://www.dictionary.com/browse/streptococcus

https://www.dictionary.com/browse/staphylococcus

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Pneumonia in Adults Full episode audio for MD edition 64:23 min - 89 MB - M4AC3 2018 09 Sept Board Review Answers 87 KB - PDFC3 2018 09 Sept Board Review Questions 80 KB - PDFC3 2018 09 Sept Pneumonia in Adults Individual MP3 Files 87 MB - ZIPC3 2018 09 Sept Pneumonia in Adults Written Summary 400 KB - PDF