| Author | 19 Posts |
skb
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A 14 year old boy with type 1 diabetes mellitus is brought to the emergency room comatose. Despite administration of fluids and insulin, his blood pressure decreases, and he goes into cardiac arrest. Labs at time of admission show
serum
Na+ 145 mEq/L
Cl- 101 mEq/L
K+ 3 mEq/L
HCO3- 12 mEq/L
Glucose 350 mg/dL (n=55-100)
Acetone 3 mg/dL (n=0)
Arterial pH 7.2
Which of the following substances in the blood is most likely involved in the cardiac arrest?
A. Acetone
B. Cl-
C. HCO3-
D. K+
E. Na+
E ? 
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| robin082006
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D
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| skb
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Can you please explain?
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| Cedrick
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I thought it was A
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| leen
Forum Guru
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hypokaleamia causes cardiac arrest
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| Cedrick
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See your point
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| skb
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You're right, hypokalemia causes cardiac arrest.
D
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| Diego Casali
Forum Elite
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D for sure.
In diabetic ketoacidosis, there is often hyperkalemia because insulin is absent.
At the same time, there is a general condition of depletion of intracellular K+, which is exchanged for extracellular ketoacids: this is the reason why you always administer K+ after fluids (first) and insulin (second).
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| sonaliraj99
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d... no doubt..
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| drpkaur
Forum Guru
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D..
with DM and Digoxin always remember K ions..it's very important..
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| waqastariq
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potassium ions...cause FLACCID cardiac arrest 
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| waqastariq
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option D
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| zzzz
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you guys are right
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| sridevi
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| MRMAVERICK
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YA D-
AS FOR THE TREATMENT OF DKA INSULIN IS GIVEN WHICH WUD HAVE CAUSED K TO MOVE INTO CELLS LEADING TO HYPOKALEMIA-AND THATS GOING TO LEAD TO CARDIC ARREST
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| MRMAVERICK
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HYPOKALEMIA LEADS TO CARDIAC ARREST
HYPERKALEMIA LEADS TO ARRHYTMIAS
BOTH OF THEM ARE DANGEROUS 
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| klimt
Forum Guru
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Right, D. Insulin pumps K into cells!
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| mytimenow
Forum Senior
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POTASSIUM K
REMEMBER HYPOKALEMIA LEADS TO CARDIAC ARREST
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| Ig F
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D For sure
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