June 24, 2019

Shock is one of the most important problems with which physicians will contend with.  The magnitude of the problem is illustrated by the high mortality associated with shock.  Assessment of perfusion is independent of arterial pressure, in that hypotension does not always need to be present to define shock.  Emphasis in defining shock is based on tissue perfusion in relation to cellular function. In this post, the basics of shock, we will define shock, discuss the causes of lactate elevation, and review the main categories of shock.

October 15, 2018

If you mainly treat adults or both adults and children like me, then you have probably heard the (very annoying) quote, “kids are not just small adults”, and so I won’t say it again. Well, I guess I just did, but at least I wont stop at this quote, but attempt to explain how kids are not small adults, and how this may impact their care in the emergency department and the intensive care unit. Nearly all organ systems of young children are immature and developing throughout childhood and on into adulthood, including the cardiovascular system. Without a basic understanding of the key physiologic differences, the emergency and intensive care physicians will be ill equipped to care for the critical ill child. To understand how kids with shock present differently than adults, it’s important to discuss a few basic differences regarding intravascular volume and cardiovascular system in children especially neonates and infants (1-24 months of age). Also remember shock is defined the exact same way as it would be in adults even though the presentation and underlying physiology may differ. Shock is simply a state where tissue/organ blood flow is inadequate to meet tissue/organ metabolic demands.