Jaundice Flashcards
سطح بیلیبیرون چقدر باشه میتونیم زردی رو در sclera تشخیص بدیم؟
the presence of scleral icterus indicates a serum bilirubin level of at least 51 μmol/L (3 mg/dL).
رسوب بیلی روبین در بافت ها در چه بیماری هایی رخ میده؟
is a sign of either liver disease or, less often, a hemolytic disorder or disorder of bilirubin metabolism.
اگر که شک کردیم به scleral icterus،
گزینه دوممون برای معاینه کجایه؟
underneath the tongue
مکانیسم سبز شدن پوست در icterus?
if the process is long-standing;
the green color is produced by oxidation of bilirubin to biliverdin.
Ddx of yellowish of skin?
1-jaundice
2-carotenoderma
3-the use of the drug quinacrine
4-and excessive exposure to phenols.
نحوه افتراق jaundice از carotenoderma?
In jaundice the yellow coloration of the skin is uniformly distributed over the body, whereas in carotenoderma the pigment is concentrated on the palms, soles, forehead, and nasolabial folds.
✅Carotenoderma can be distinguished from jaundice by the sparing of the sclerae.
بیلی روبین یوریا خودشو چجوری نشون میده؟
و چه اطلاعاتی ازش به دست میاریم؟
darkening of the urine, which is due to the renal excretion of conjugated bilirubin.
Patients often describe their urine as tea- or cola-colored. ☕️🥤
Bilirubinuria indicates an elevation of the direct serum bilirubin fraction and, therefore, the presence of liver or biliary disease.
بیلیروبین direct و indirect چیه؟
direct : conjugated
indirect bilirubin: unconjugated bilirubin
چرا مقدار calculated indirect bilirubin ، برای ارزیایی دقیق و ریلایبل نیس؟
Unconjugated bilirubin also reacts with diazo reagents, albeit slowly, even when the accelerator is absent. Thus the calculated indirect bilirubin may underestimate the true amount of unconjugated bilirubin in circulation.
چون مصرف میشه، کمتر نشونش میده
What is the normal serum bilirubin concentration?
1-1.5 mg/dl
چه زمانی میگیم فرد Unconjugated hyper bilirubinaemia داره؟
Unconjugated hyper- bilirubinemia is present when the direct fraction is <15% of the total serum bilirubin.
در کدام بیماری conjugated Bilirubinaemia داریم ولی Bilirubinuria نداریم؟
in jaundiced patients with liver disease+ prolonged cholestasis
because the delta bilirubin, although conjugated, is covalently bound to albumin and therefore not filtered by the renal glomeruli.
The delta bilirubin is formed in serum when hepatic excretion of bilirubin glucuronides is impaired and the glucuronides accumulate in serum.
با چه تستی در بیماری کهدMildly elevated direct fraction داره، چجوری میتونیم وجود Conjugated hyperbilirubinaemia را تایید کنیم؟
detection of bilirubin in urine via dipstick test is extremely helpful to confirm the presence of conjugated hyperbilirubinemia
در اپروچ به Hyperbilirubinaemia، برای پیدا کردن علت ۳ رویکردی که پیش میگیریم چیه؟
۱- ایا Overproduction بیلیروبین داریم؟
۲-ایا uptake, conjugation, excretionش دچار مشکله؟
۳-ایا به خاطر اسیب هپاتوسیت ها و Bile ducts ریختن تو خون؟
اولین و دومین اقدام تشخیصی ما در برخوزد با بیماری که زردی داره؟
1-the initial step is to perform appropriate blood tests in order to determine whether the patient has an isolated elevation of serum bilirubin.
2-If so, is the bilirubin elevation due to an increased unconjugated or conjugated fraction?
3-If the hyperbilirubinemia is accompanied by other liver test abnormalities, is the disorder hepatocellular or cholestatic?
4-If cholestatic, is it intra or extrahepatic?
مهم ترین بخش Hx کسی که با زردی ای اومده که هنوز علتش رو نمبدونیم؟
Medical history
چه سوالایی رو حتما باید در شرح حال زردی بپرسیم؟
the use of or exposure to any chemical or medication, whether physician-prescribed, over- the-counter, complementary, or alternative medicines (e.g., herbal and vitamin preparations) or other drugs such as anabolic steroids.
The patient should be carefully questioned about possible parenteral exposures, including transfusions, intravenous and intranasal drug use, tattooing, and sexual activity.
Other important points include recent travel history; exposure to people with jaundice; exposure to possibly contaminated foods; occupational exposure to hepatotoxins; alcohol consumption; the duration of jaundice; and the presence of any accompanying signs and symptoms, such as arthralgias, myalgias, rash, anorexia, weight loss, abdominal pain, fever, pruritus, and changes in the urine and stool.
اگر در معایته بیماری که با زردی اومده متوجه temporal & proximal muscle wasting شیم به چی شک میمنیم؟
Temporal and proximal muscle wasting suggests long-standing disease such as pancreatic cancer or cirrhosis.
علایم stigmata of chronic liver disease چی ان و همراهی شون با زردی به نفع کدام بیماری کبدی عه؟
Stigmata of chronic liver disease, including spider nevi, palmar erythema, gynecomastia, caput medusae, Dupuytren’s contractures, parotid gland enlargement, and testicular atrophy, are commonly seen in advanced alcoholic (Laennec’s) cirrhosis and occasionally in other types of cirrhosis.
بزرگ بودن virchow node یا peri umbilical nodes به نفع چیه؟
An enlarged left supraclavicular node (Virchow’s node) or a periumbilical nodule (Sister Mary Joseph’s nodule) suggests an abdominal malignancy.
در معاینه شکم بیماری که با زردی اومده چیا برامون مهمه؟
The abdominal examination should focus on the size and consistency of the liver,
on whether the spleen is palpable and hence enlarged,
and on whether ascites is present.
بزرگ بودن لوب چپ کبد و طحال در زردی چی رو به ذهنمون میاره؟
Patients with cirrhosis may have an enlarged left lobe of the liver, which is felt below the xiphoid, and an enlarged spleen.
ملیگننسی کبد در معاینه خودشو چطور نشون میده؟
A grossly enlarged nodular liver or an obvious abdominal mass suggests malignancy.
بزرگ بودن کبد و تندر بودنش در زردی چی رو به ذهنمون میاره؟ ۴
1-viral or
2-alcoholic hepatitis;
3-an infiltrative process such as amyloidosis;
4-or, less often, an acutely congested liver secondary to right-sided heart failure.
در بیماری که با زردی اومده، اگر تندرنس شدید داشته باشه در RUQ و در دم دچار resp arrest شه، به چی شک میکنیم؟
Severe right-upper-quadrant tenderness with respiratory arrest on inspiration (Murphy’s sign) suggests cholecystitis.
در بیماری که آسیت و زردی داره چی میاد ب ذهنمون ؟ ۲
1-cirrhosis
2-malignancy with peritoneal spread
در initial evaluation بیماری که با زردی اومده چه لب تست هایی رو درخواست میدیم؟ ۵
total and direct serum bilirubin measurement with fractionation
serum aminotransferase
alkaline phosphatase
albumin concentrations
prothrombin time tests
فرق الگوی hepatocellular و cholestatic?
Patients with a hepatocellular process generally have a rise in the aminotransferases that is disproportionate to that in ALP, whereas patients with a cholestatic process have a rise in ALP that is disproportionate to that of the aminotransferases.
با کدوم تست ها liver function را برررسی میکنیم؟
albumin level and a prothrombin time
اگر در بررسی هایی که برای بیمار زردی انجام دادیم ببینیم که البومین پایینه ، نشونه چیه؟ ۲
A low albumin level suggests a chronic process such as cirrhosis or cancer.
اگر در بررسی هایی که برای بیمار زردی انجام دادیم ببینیم که البومین نرماله، نشونه چیه؟
A normal albumin level is suggestive of a more acute process such as viral hepatitis or choledocholithiasis.