5000+ High-Yield MCQs & Explanations – NEET SS MCH
NEET, DNB questions from general surgery
Q) Not true about afferent loop syndrome
a) It can occur after either partial or total gastrectomy with Billroth ii reconstruction or roux en y gastrojejunostomy
b) Acute obstruction is more common than chronic
c) Weight loss and anemia are common.
d) Bacterial overgrowth in afferent limb causes malabsorption of fat and other nutrients, such as vitamin B12 or iron.
Q) What is not true about the role of PET Scan in staging of Ca Stomach?
a) 50% of Carcinoma stomach are PET avid
b) Response to Neoadjuvant therapy is usually seen on PET in 2 weeks
c) PET response correlates with survival
d) Sensitivity of PET is same for all kinds of histopath tumors
Ans - d
Highly Selective Vagotomy (HSV) only divides the last part of the nerves which supply the part of stomach which produces acid.
Anterior and posterior nerves of Latarjet are found and their terminal branches are severed from 7 cm proximal to the pylorus to 5 cm above the GE junction
Motor function of the stomach is not affected
Criminal nerve of Grassi is branch of posterior Vagus. It should be sought and cut. This nerve derives its name from the common mistake done during vagotomy. This nerve is often missed and responsible for recurrence of symptoms of Peptic ulcer disease. MOre
Vagus Nerve branches
Parasympathetics are vagally mediated using acetylcholine as the primary neurotransmitter.
Q) Not true about acute gastric dilatation (AGD)
a) AGD is encountered most often as a postoperative complication in abdominal surgery
b)Also seen in other disorders, such as anorexia and bulimia nervosa, psychogenic polyphagia, trauma, diabetes mellitus
c) When intragastric pressure from gastric distension exceeds 20 cm H2O gastric necrosis starts
d) Clinical features are pain abdomen and effortless vomiting
Q)Tumor lysis syndrome which is not seen? (# Electrolytes MCQ)
a. Hyperkalemia
b Hypocalcemia
c. Hypophosphatemia
d. Hyperuricemia
Other facts
Tumor Lysis Syndrome Tumor lysis syndrome (TLS) is a life-threatening condition that can occur when cancer cells die. As the cells die, they release their contents into the bloodstream, which can lead to a number of complications.
TLS is most likely to occur in people with rapidly growing cancers, such as leukemia, lymphoma, and multiple myeloma. It can also occur in people with solid tumors, such as breast cancer, lung cancer, and pancreatic cancer.
Q) Chovstek sign with normal calcium seen in
a) Hypomagnesemia
b) Hypermagnesemia
c) Hyperphosphatemia
d) Hypokalemia
Q) False statement about ingested foreign bodies is
a) Conservative management in most patients
b) Cathartic agents are part of conservative management
c) Sharp objects can cause perforation
d) Laparotom is indicated for obstruction
Q) Origin of dentigerous cyst is from
a) Unerupted tooth
b) Erupted tooth
c) Gums
d) Enamel
Q) Indication of IVC Filter in a 40 year old male
A. Recurrent thromboembolism despite adequate anticoagulation
B. Deep venous thrombosis in a patient well controlled by anticoagulation
C. Presence of DVT
D. All of the above
Q) If ph >7.4, How much does plasma potassium concentration change for every 0.1 unit increase of the extracellular pH ?
a) Potassium decrease by 0.3meq/l
b) K+ increase by 0.3 meq/l
c) Potassium decrease by 1.5 meq/l
d) K+increase by 1.5 meq/l
Free answer
a
Acid-base disturbances cause potassium to shift into and out of cells. This is called internal potassium balance and was discovered in 1956.
In alkalosis (increase in ph,) K+ falls and in Acidosis potassium concentration will increase. For every 0.1 fall in ph, K+ increases by 0.3-0.6 meql/l
Metabolic acidosis- in a plasma potassium concentration that is elevated in relation to total body stores.