Electrolytes

Q) A 50 year old male undergoes pancreatectomy for Carcinoma head of pancreas. His pre op Hb was 9.2g% and during surgery he received 5 units of PRBC. In the post op period on the 2nd day he develops ECG changes. Work up is done for Myocardial Ischemia which is negative. What is the most common  cause of ECG changes here

a) Hyponatremia

b) Hyperkalemia

 

Q. A 45 year old male has severe coughing followed by sudden Bilateral pain in lower abdomen. At the same time he develops a swelling in the mid line, lower abdomen which does not change in size on raising the leg muscles. What has really happened?

a) Ruptured aortic aneurysm

b) Obturator hernia

c) Spigelian Hernia

d) Rectus sheath hematoma

Answer

Contraindication of liver transplantation

Q)Contraindications of liver transplantation have changed over the years. Which is an absolute contraindication of  liver transplantation

a) Previous breast cancer

b) Portal vein thrombosis

c) Active tuberculosis

d) Active substance abuse

d

Previous history of breast cancer if completely treated is not an contraindication of liver transplant. Portal vein thrombosis was earlier considered a relative contraindication but almost all series have shown similar results in patients with PVT than patients without PVT.

IN portal vein thrombosis, inflow to the new liver can me taken in many ways

a) thrombectomy

b) Jump grafts from Superior mesenteric vein 

c) Anastomosis have been done from big collaterals

Active tuberculosis can be managed after transplant.

Modified ATT regimens without INH and Rifampicin are being  used.  Any kind of active substance abuse alcohol,  drugs etc are absolute contraindications for liver transplant because the disease will recur.

Complications of duodenal diverticulum

Q) True statement regarding complications of duodenal diverticulum is

a) Perforation is the commonest complication

b) Obstruction is caused by extra luminal duodenal diverticulum

c) Bleeding is the most common complication of duodenal diverticulum.

d) Diverticulitis is common and easily diagnosed.

Answer

c

Complications of duodenal diverticulum are rare with a reported incidence of 5-10% in those with duodenal  diverticulum. Operative intervention is required in about 1% cases

Perforation is the rarest but the most severe complication of duodenum diverticulum. The most common cause of perforated duodenal diverticulum is diverticulitis. They perforate in the retroperitoneum, adding to diagnostic uncertainty. Ct Scans are most diagnostic to help in this diagnosis.

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Causes of Acalculus Cholecystitis

Q) Which of the following is not a cause of acalculus cholecystitis? Questions on bile duct

a) Kinking of the neck of gall bladder

b) Acalculus cholecystitis Sphincter spasm

c) Thrombosis of cystic artery

d) Over eating

Ans d

Acalculus cholecystitis can be both acute and chronic in the absence of stones. Although it can present acutely, acalculous cholecystitis typically presents more insidiously.

Mostly the acute form is recognized and chronic form is called biliary dyskinesia.

The cause of acalculus cholecystitis are

  1. Kinking or fibrosis of neck of gall bladder.
  2. Thrombosis of cystic artery
  3. Sphincter of Oddi spasm
  4. Prolonged fasting
  5. Dehydration
  6. Sepsis
  7. Systemic diseases MODS

Ref: By Jarrell - NMS Surgery (National Medical Series for Independent) (Sixth Edition) (2015-07-30) [Paperback]

Jaundice in acalculus cholecystitis  is known to occur because of ischemia and inflammation cystic duct gets obstructed due to edema

Diagnosis

Chronic acalculus cholecystitis is a cholescintigraphy nuclear scan (HIDA) with the administration of cholecystokinin (CCK). After the . A calculated ejection fraction of 35% or less may be indicative of hypokinetic functioning of the gallbladder. An ultrasound of the gallbladder may also be useful. If this shows a thickened gallbladder wall of over 3.5 mm, this may be due to cholecystitis.

Acute acalculus cholecystitis - USG CT or HIDA

 

BEST BOOKSMCQ practise 

MRCS Part A: Essential Revision Notes: Book 1

MRCS Part A: Essential Revision Notes: Book 2

 


EUS in pancreatic cancer

Q) What is true about the role of EUS in Carcinoma head of pancreas.

a) It has a sensitivity of 50-60% in detecting lesions less than 3 cm in size

b) It has a  high negative predictive  value

c) Chronic pancreatitis can be easily differentiated from Carcinoma head of pancreas by EUS

d) Small caliber needles have low accuracy than high caliber needles in FNAC

www.mcqsurgery.com/pancreas

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