Shock
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American Roentgen Ray Society Images of Shock |
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]
Clinical Recognition
End-organ hypoperfusion affects virtually all body systems and can manifest in several clinically detectable ways:
The values given are approximate and certain special considerations should be borne in mind. For instance, patients on β-blockers may not be able to mount a significant tachycardia. A normal pulse rate is seen in some cases of shock, a phenomenon sometimes confusingly described as relative bradycardia.[1] Paradoxical (absolute) bradycardia is also described. Compensatory mechanisms in the elderly can also be less pronounced and so the typical pattern above may not be seen. Also, young, very fit patients may be able to compensate so well that physiological derangements only manifest when the shock is very severe and sudden decompensation occurs.
Related Chapters
- Obstructive shock
- Cardiogenic shock
- Acute respiratory distress syndrome (ARDS)
- Military Anti-Shock Trousers
- Physical trauma
- Sepsis
- Stress (medicine)
- Systemic inflammatory response syndrome (SIRS)
References
- ↑ Demetriades D, Chan LS, Bhasin P, Berne TV, Ramicone E, Huicochea F, et al. Relative bradycardia in patients with traumatic hypotension. The Journal of trauma. 1998;45:534-9. PMID 9751546
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