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Cause of hypotension
Ibrahim makdah ibrahim.makdah at gmail.comMon Feb 25 08:03:08 GMT 2008
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good day all i am ER specialist please if samebady can sand me a ower poit persentation for tarige system or any subject in ER department thank you for this interesting case best regard On 2/25/08, Matthew Reeds <mgreeds at reeds.uk.com> wrote: > Thanks for your interesting case. > > > > I am sure that his chances of surviving were very low (mainly due to the > underlying brain injury). However I agree that it is very important to > analyse what could have been done differently and see how one could improve > for the future. The mechanism of injury and details of further injuries (if > known) would be helpful but I shall comment from what you notified. > > > > His bilaterally blown pupils clearly signify a substantial traumatic brain > injury. He will undoubtedly have substantially raised ICP and, as an end > stage sign, this might indicate Cushing's response (hypertension with > bradycardia) due to herniation of the brain. As has been stated however, > Cushing's response is not always present and it is important to remember > that everything doesn't always fit the "nice little boxes we have all been > taught to expect" > > > > I completely agree with Ken, a contained mediastinal haematoma does not > cause hypotension; merely with a contained mediastinal haematoma one should > apply hypotension (so as not to "pop the clot/haematoma" etc.) > > > > A soft abdomen in this case is irrelevant as he is intubated and it is not > going to tell you anything - the patient won't guard/rebound etc and this > will be further explained by the fact that he will no doubt have muscle > relaxant on board. > > > > With no BP or pulse, he was not perfusing his vital organs (especially > brain) and this is an avenue that should certainly be explored emergently > given his injuries. I am also intrigued by your comments on the USG (I > presume that you mean a FAST scan?) This certainly is not a 100% accurate > test (either specific or sensitive) and there are many sources of error > (such as operator etc.) Whilst the neurological brain problem could account > for his hypotension and relevant bradycardia etc. (vasomotor centre in the > brain etc. being compressed), I personally do not see (and therefore doubt) > that you would get a BP and pulse back with fluids if this was the cause of > the problem. I am convinced that this is haemorrhagic in nature (more > likely) or cardiac tamponade (less likely - but still possible) and is one > of those cases where a negative fast is in fact a false negative result. The > descriptions that you give of the CXR, pelvic x-ray and FAST doesn't > coincide with haemorrhage. These are either misleading or cardiac tamponade > is present and accounting for the signs/vitals that you give. > > > > Acknowledging that you do not get significant haemorrhage in the brain (but > that minimal haemorrhage can cause a haematoma resulting in signficant ICP > and midline shift etc.), this needs investigating and any haematoma > evacuation treated within 4 hours but I would focus on an alternative source > as his main problem. You state "CVS - audible heart sounds." Were they > muffled? - if so, cardiac tamponade becomes more likely. In this situation, > given the patient's history and likely diagnosis, I would suggest looking > into the chest and abdomen through a thoraco-abdominal approach (better a > negative laparotomy than a dead patient.) I personally would be very > concerned in going to CT with a patient who, in essence, had a cardiac > arrest (i.e. no BP & no pulse) as he is likely to arrest again (as he later > did.) When he arrested though, given that you need to act quickly, I would > suggest that a cardiac tamponade becomes his likely primary problem and that > you need to go into his chest via an anterior left sided thoracotomy (I > might have suggested sternotomy but you are not EXACTLY sure what you are > dealing with - despite you anticipating it being a cardiac tamponade and > there being bilateral chest sounds which make lung injuries less likely - > although not impossible) so an anterior thoracotomy would, in my opinion, be > an ideal choice of incision, which could be extended into a clamshell if > required. I agree that external chest compressions have no role in this > case. > > > > I would be very interested in other people's views on the above and how they > would approach this case. > > > > Interesting points for discussion on this case. Thank you for sharing it > with us. > > > > Regards, > > > > > > Matthew > > > > > > > > > > i am a Gen.Surg resident and in 2 years of i have seen 2 pts coming to > trauma, in shock,25yr male,Unconscious(intubated),BP not > recordable,peripheral pulse absent, Pupils B/L dilated and fixed,chest-B/L > breath sound +,CVS-audible heart sounds. Abdomen Soft/lax/Bowel sound+ > > aftr resuusitation with 2 Lit RL and 2 U PRBC, BP came to 110/70,pulse110 > > CXR no pneumo/hemo > > Pelvic xray-no # > > USG abdomen- no free fluid > > we decide to shift the pt to CT with the above vitals-as the pt is shifted > to CT table, pt. arrest , CPR done 40mins > > but pt declared dead. > > > > my question here is, what could be cause of shock if we excluded hemorhage, > as there was no bleeding in the chest/abdomen/ > > pelvic/no long bone fractures. > > > > the only thing was the pupils B/L Dilated and fixed ! > > now is there any cause in the Head which can cause this? > > i mean after excluding Hemorrhagic cause, if we label Neurogenic shock, > the pt should be Hypertensive and Bradycardic. > > > > -- > trauma-list : TRAUMA.ORG > To change your settings or unsubscribe visit: > http://www.trauma.org/index.php?/community/ > -- Dr: Ibrahim Makdah Head of ER Department Master degree Emergency Medicine ATLS, ACLS, PALS ,NRP ,BCLS , instructor
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