robin082006
Forum Hero
Topics: 471
Posts: 5,123
|
a patient with SIADH, hct will
a. increase
b. decrease
c. unchange
pls explain you ans
___________________
The Key to Succeed is Patience.
|
| Geroo
Forum Guru
Topics: 114
Posts: 799
|
I think wil be decreased because plasma volume will be increased
|
| Doc2378
Forum Guru
Topics: 46
Posts: 688
|
I'd say unchanged....as the HCT measurement doesnot involve taking into account the plasma vol fraction after centrifugation..
anybody else?
___________________
Courage does not always ROAR. Sometimes courage is the quiet voice at the end of the day saying, "I will try again tomorrow" - Mary Anne Radmacher
|
| Doc2378
Forum Guru
Topics: 46
Posts: 688
|
Also I don't think the EPO conc is elevated in SIADH...am thinking of small cell Ca here
Well??
___________________
Courage does not always ROAR. Sometimes courage is the quiet voice at the end of the day saying, "I will try again tomorrow" - Mary Anne Radmacher
|
| Doc2378
Forum Guru
Topics: 46
Posts: 688
|
well I did come across a question for Conn's where they described a dec in Hct as one of the findings in the question stem...so what do you say Robin?
___________________
Courage does not always ROAR. Sometimes courage is the quiet voice at the end of the day saying, "I will try again tomorrow" - Mary Anne Radmacher
|
| reet
Forum Fanatic
Topics: 152
Posts: 1,411
|
well,,, i would say hct UNCHANGED in SIADH cuz plasma osmorarity dec first ..and ICF /ECF volume increses. both.
... .BUT IN PREGNANY---plasma volume incresee causing dec hct????
___________________
Live as u were to die tommorow. Learn as if u were to live forever.
|
| robin082006
Forum Hero
Topics: 471
Posts: 5,123
|
ans is c.unchange
in SIADH, increased ECF as well as ICF. HCT would be decreased but because RBCs swell so it's unchanged
___________________
The Key to Succeed is Patience.
|
| skyhigh
Forum Guru
Topics: 105
Posts: 561
|
so according to doc2378's response, does hct increase in small cell ca due to inc. in epo?
|
| krsna
Forum Senior
Topics: 1
Posts: 211
|
hey guys...got this from web
This condition is biochemically characterised by low plasma osmolality with inappropriately high urine osmolality (urine/plasma osmolality ratio >1.5), a concentrated oliguria (<1ml/kg/hr), urine SG >1.010, hyponatraemia, urine Na+ loss 20mmol/l – 50mmol/l, suppressed plasma renin activity, low haematocrit, low plasma urea and uric acid
well?im pretty confused here!!pls clarify
|
| Geroo
Forum Guru
Topics: 114
Posts: 799
|
robin are you sure about that ? you have a refrence?
|
| anjushree
Forum Guru
Topics: 64
Posts: 386
|
IT should be low haematocrit,,,,,,,,,with SIADH INC in ECF------LEADING to low tonicity of ECF----transfer of water to ICF--
inc in vol of ECF-----LOW HAEMATOCRIT
|
| robin082006
Forum Hero
Topics: 471
Posts: 5,123
|
As you I still confused, some documents say low while others say normal.
This is a remmebered question, it does not ask Hct decrease or increase but ask what is not seen in case, so we should choose INCREASED HCT (IS NOT SEEN).
let's go
___________________
The Key to Succeed is Patience.
|
| docarchana
Forum Guru
Topics: 70
Posts: 515
|
i think hct will be decreased.
|
|
| |
| | | | | | | | | | | | | |
