Obesity and Metabolic Syndrome — MCQs
Fatty liver with hepatomegaly is seen in:
All of the following are primarily restrictive operations for morbid obesity, except which of the following?
Which of the following is NOT included in the Child-Pugh criteria for assessing liver disease severity?
Which condition has the maximum relative risk attributed to obesity?
Which of the following is not the criteria for diagnosis of Metabolic syndrome?
Which antipsychotic is most likely to cause metabolic syndrome?
A child with decreased levels of LH, FSH and Testosterone presents with delayed puberty. Which of the following is the most likely diagnosis –
Obesity has the maximum relative risk for which condition?
A female patient presents with hirsutism, amenorrhea, and obesity. What is the most likely diagnosis?
A 35-year-old obese female presents with worsening hirsutism and elevated testosterone levels. Which of the following is true?
Obesity and Metabolic Syndrome Indian Medical PG Practice Questions and MCQs
Question 1: Fatty liver with hepatomegaly is seen in:
- A. Marasmus
- B. Nutmeg liver
- C. Metabolic syndrome (Correct Answer)
- D. Wilson disease
Explanation: ***Metabolic syndrome*** - **Metabolic syndrome** is characterized by a cluster of conditions, including **insulin resistance**, obesity, hypertension, and dyslipidemia, which frequently lead to **non-alcoholic fatty liver disease (NAFLD)** and subsequent hepatomegaly [1]. - The accumulation of fat in the liver is a direct consequence of the metabolic derangements, leading to hepatic steatosis, inflammation, and potential fibrosis, with **hepatomegaly** often being a palpable clinical sign [1]. *Marasmus* - **Marasmus** is a form of severe protein-energy malnutrition characterized by significant **weight loss** and muscle wasting, but typically **does not involve fatty liver** or hepatomegaly. - In marasmus, caloric intake is severely deficient, leading to the mobilization of fat stores rather than accumulation in the liver [2]. *Nutmeg liver* - **Nutmeg liver** is a characteristic pathological finding in **congestive hepatopathy**, most often due to **right-sided heart failure**. - It results from chronic passive venous congestion, causing a mottled appearance with alternating areas of congestion and normal parenchyma, but not primarily **fatty infiltration**. *Wilson disease* - **Wilson disease** is a rare genetic disorder of **copper metabolism** that leads to excessive copper accumulation in various organs, including the liver, brain, and eyes. - While it can cause hepatomegaly and liver disease, the primary pathology is copper overload, not **fatty infiltration**, though steatosis can occur secondary to chronic liver injury. *Additional Note* - Enlargement of the liver due to fatty infiltration occurs when triacylglycerol accumulation exceeds the liver's capacity to secrete VLDL, a process seen in conditions like uncontrolled diabetes and certain metabolic stresses [2].
Question 2: All of the following are primarily restrictive operations for morbid obesity, except which of the following?
- A. Laparoscopic adjustable gastric banding
- B. Roux-en-Y operation (Correct Answer)
- C. Vertical band gastroplasty
- D. Duodenal switch operation
Explanation: **Roux-en-Y operation** - The **Roux-en-Y gastric bypass** is considered a **malabsorptive as well as a restrictive procedure** because it creates a small gastric pouch and bypasses a significant portion of the small intestine. - This dual mechanism leads to greater weight loss compared to purely restrictive surgeries. *Vertical band gastroplasty* - **Vertical band gastroplasty** is a **purely restrictive procedure** that creates a small pouch and restricts outflow, but does not involve nutrient malabsorption. - It is less commonly performed now due to higher rates of weight regain and complications compared to other bariatric surgeries. *Laparoscopic adjustable gastric banding* - **Laparoscopic adjustable gastric banding** is a **purely restrictive procedure** where an inflatable band is placed around the upper part of the stomach to create a small pouch. - This limits the amount of food that can be consumed at one time and slows gastric emptying, but does not alter nutrient absorption. *Switch duodenal operation* - The **duodenal switch operation** (biliopancreatic diversion with duodenal switch) is primarily a **malabsorptive procedure** with a restrictive component. - While it includes creation of a small gastric pouch, its most significant effect on weight loss comes from bypassing a large portion of the small intestine, leading to **significant malabsorption**.
Question 3: Which of the following is NOT included in the Child-Pugh criteria for assessing liver disease severity?
- A. ALT / AST (Correct Answer)
- B. S. albumin
- C. Serum Bilirubin
- D. Ascites
Explanation: ***ALT / AST*** - The Child-Pugh score primarily assesses the synthetic and excretory functions of the liver, not necessarily the degree of **hepatocellular inflammation** reflected by transaminases [3]. - While ALT/AST levels are crucial for diagnosing acute liver injury and monitoring chronic liver diseases, they are **not direct components** of the Child-Pugh class, which focuses on prognosis [1]. *S. albumin* - **Serum albumin** reflects the synthetic function of the liver, as albumin is exclusively produced by hepatocytes [2]. - Low albumin levels indicate significant **hepatic dysfunction**, which is directly incorporated into the Child-Pugh scoring system. *Serum Bilirubin* - **Serum bilirubin** measures the liver's ability to conjugate and excrete bilirubin, a key excretory function [2]. - Elevated bilirubin levels signify impaired liver function and are a critical parameter in the **Child-Pugh classification**. *Ascites* - The presence and severity of **ascites** are clinical signs of decompensated liver disease, reflecting portal hypertension and fluid retention [2]. - Ascites is a **clinical parameter** directly included in the Child-Pugh score, contributing to the assessment of disease severity.
Question 4: Which condition has the maximum relative risk attributed to obesity?
- A. Hypertension
- B. CHD
- C. DM (Correct Answer)
- D. Cancer
Explanation: ***DM*** - Obesity is a major risk factor for Type 2 Diabetes Mellitus (T2DM), with a **relative risk often exceeding 3-7 times that of normal-weight individuals**, and even higher for severe obesity. - The link is primarily due to **insulin resistance** caused by increased adipose tissue. *Hypertension* - Obesity significantly increases the risk of hypertension, with a relative risk typically in the range of **2 to 3 times higher** than normal-weight individuals. - The mechanisms involve increased **blood volume**, **sympathetic nervous system activity**, and **renal sodium reabsorption**. *CHD* - Obesity is a strong independent risk factor for Coronary Heart Disease (CHD), contributing to a relative risk of approximately **1.5 to 2.5 times higher** than normal weight. - It often acts by exacerbating other risk factors like **hypertension**, **dyslipidemia**, and **diabetes**. *Cancer* - Obesity is linked to various cancers, including endometrial, esophageal adenocarcinoma, renal cell, and breast cancer in postmenopausal women, with relative risks typically ranging from **1.2 to 2 times higher** for specific cancers. - The pathways include **chronic inflammation**, altered **hormone levels** (e.g., estrogen), and **insulin-like growth factor signaling**.
Question 5: Which of the following is not the criteria for diagnosis of Metabolic syndrome?
- A. High LDL (Correct Answer)
- B. Hyperiglyceridemia
- C. Hypertension
- D. Central obesity
Explanation: ***High LDL*** - While **high LDL (low-density lipoprotein)** is a risk factor for cardiovascular disease [1], it is **not** one of the specific diagnostic criteria for metabolic syndrome. - The criteria for metabolic syndrome focus on a cluster of metabolic abnormalities associated with insulin resistance. *Hypertriglyceridemia* - **Elevated triglycerides** (typically ≥ 150 mg/dL or on drug treatment for elevated triglycerides) is one of the key diagnostic criteria for metabolic syndrome. - It reflects impaired lipid metabolism often associated with insulin resistance [2]. *Hypertension* - **Elevated blood pressure** (systolic ≥ 130 mmHg or diastolic ≥ 85 mmHg, or on antihypertensive drug treatment) is a core component of metabolic syndrome. - Hypertension in this context is often linked to underlying insulin resistance. *Central obesity* - **Increased waist circumference** (varying by ethnicity and sex, e.g., >102 cm in men and >88 cm in women for adults of European descent) is a primary criterion for metabolic syndrome. - It is a strong indicator of visceral fat accumulation, which is closely linked to insulin resistance [3].
Question 6: Which antipsychotic is most likely to cause metabolic syndrome?
- A. Olanzapine
- B. Haloperidol
- C. Clozapine (Correct Answer)
- D. Risperidone
Explanation: ***Clozapine*** - **Clozapine** has the **highest risk** of causing **metabolic syndrome** among all antipsychotics, characterized by significant **weight gain**, **dyslipidemia**, **insulin resistance**, and **new-onset diabetes mellitus**. - Multiple meta-analyses consistently show clozapine causes the **most severe metabolic disturbances**, with weight gain often exceeding 5-10 kg in the first year of treatment. - The mechanism involves potent antagonism of **5-HT2C receptors**, **histamine H1 receptors**, and effects on **leptin signaling** and **glucose metabolism**. - Its use requires careful **metabolic monitoring** including baseline and periodic measurement of weight, BMI, waist circumference, fasting glucose, and lipid profile. - Despite these risks, clozapine remains the gold standard for **treatment-resistant schizophrenia**, but its metabolic effects necessitate risk-benefit consideration. *Olanzapine* - **Olanzapine** has the **second-highest risk** for metabolic syndrome after clozapine, also causing significant weight gain and metabolic disturbances. - Like clozapine, it has potent **5-HT2C** and **H1 antagonism**, leading to increased appetite and altered glucose-lipid metabolism. - The metabolic risk is substantial but generally slightly less severe than clozapine in head-to-head comparisons. *Haloperidol* - **Haloperidol** is a first-generation (typical) antipsychotic with a **significantly lower risk** of metabolic syndrome compared to clozapine or olanzapine. - Its primary adverse effects are **extrapyramidal symptoms** (akathisia, dystonia, parkinsonism) and **hyperprolactinemia** rather than metabolic disturbances. - It causes minimal weight gain and has low risk for diabetes or dyslipidemia. *Risperidone* - **Risperidone** has an **intermediate metabolic risk** among atypical antipsychotics, lower than clozapine or olanzapine but higher than some others like aripiprazole or ziprasidone. - While it can cause weight gain and metabolic changes, the magnitude is generally more modest. - Its more prominent side effect is **hyperprolactinemia** due to potent D2 antagonism.
Question 7: A child with decreased levels of LH, FSH and Testosterone presents with delayed puberty. Which of the following is the most likely diagnosis –
- A. Klinfelter's syndrome
- B. Kallman's syndrome (Correct Answer)
- C. Testicular Infection
- D. Androgen Insensitive syndrome
Explanation: ***Kallman's syndrome*** - **Kallman's syndrome** is characterized by **hypogonadotropic hypogonadism** with **decreased LH, FSH, and testosterone levels**, leading to **delayed puberty**. - This is a **central/secondary hypogonadism** where the problem lies in the hypothalamus or pituitary, not in the testes. - **Classic associated feature:** Anosmia or hyposmia (impaired sense of smell) due to abnormal migration of GnRH-producing neurons and olfactory bulb development. - The **low gonadotropins (LH and FSH)** distinguish this from primary testicular disorders. *Klinefelter's syndrome* - **Klinefelter's syndrome (47, XXY)** presents with **primary testicular failure** causing **hypergonadotropic hypogonadism**. - Hormonal profile shows **elevated LH and FSH** (not low) as the pituitary attempts to stimulate the failing testes. - This is the opposite hormonal pattern to what is described in the question. - Other features include tall stature, small firm testes, and gynecomastia. *Testicular Infection* - **Testicular infection** (orchitis) causes **primary gonadal failure** with damage to the testes. - Results in **hypergonadotropic hypogonadism** with **elevated LH and FSH**, not decreased levels. - The pituitary increases gonadotropin production in response to poor testicular function. - Does not cause central hypogonadism with low LH and FSH. *Androgen Insensitive syndrome* - **Androgen Insensitivity Syndrome (AIS)** involves a genetic male (46, XY) who is **unresponsive to androgens** due to androgen receptor defects. - Hormone levels show **normal or elevated testosterone** and **normal or elevated LH**. - The body produces testosterone, but peripheral tissues cannot respond to it. - Presents with primary amenorrhea and female external genitalia in complete AIS, not delayed male puberty.
Question 8: Obesity has the maximum relative risk for which condition?
- A. Cancer
- B. DM (Correct Answer)
- C. Hypertension
- D. CHD
Explanation: ***DM*** - Obesity is a major risk factor for **type 2 diabetes mellitus (DM)**, significantly increasing insulin resistance and pancreatic beta-cell dysfunction. - The relative risk for developing type 2 diabetes attributable to obesity is generally considered to be among the **highest compared to other chronic diseases**. *Cancer* - Obesity is linked to an increased risk of several cancers, including colorectal, breast, and endometrial cancers due to chronic inflammation and hormonal changes. - While significant, the relative risk of obesity for cancer is typically **lower than for type 2 diabetes**. *Hypertension* - Obesity contributes to **hypertension** by activating the sympathetic nervous system and renin-angiotensin-aldosterone system. - Although there is a strong association, the relative risk for hypertension due to obesity is generally **not as high as for type 2 diabetes**. *CHD* - Obesity is a significant risk factor for **coronary heart disease (CHD)** through its association with dyslipidemia, hypertension, and diabetes. - The relative risk for CHD is substantial, but **indirectly mediated** by other comorbid conditions, and the direct relative risk is often surpassed by that of type 2 diabetes.
Question 9: A female patient presents with hirsutism, amenorrhea, and obesity. What is the most likely diagnosis?
- A. Androgen-secreting ovarian tumor
- B. Congenital adrenal hyperplasia
- C. Cushing's syndrome
- D. Polycystic Ovary Syndrome (PCOS) (Correct Answer)
Explanation: ***Polycystic Ovary Syndrome (PCOS)*** - **Hirsutism**, **amenorrhea** (or oligomenorrhea), and **obesity** are classic clinical features of PCOS, reflecting hyperandrogenism and insulin resistance [2]. - PCOS is a diagnosis of exclusion and involves chronic anovulation and polycystic ovaries on ultrasound [3], though these are not explicitly mentioned, the constellation of symptoms strongly points to it. *Androgen-secreting ovarian tumor* - While it can cause **hirsutism** and **amenorrhea**, the onset is typically **rapid** and severe, with very high androgen levels, and obesity is not a primary feature. - Ovarian tumors are generally less common than PCOS and may present with a palpable mass or specific imaging findings. *Congenital adrenal hyperplasia* - This genetic condition often presents in childhood or adolescence with varying degrees of **virilization** and menstrual irregularities due to enzyme deficiencies in cortisol synthesis [1]. - While it causes **hirsutism** and potentially **amenorrhea**, obesity is not a direct consequence, and the patient's age of presentation and specific symptom pattern are less typical for adult-onset CAH in this context. *Cushing's syndrome* - Characterized by **central obesity**, **moon facies**, **buffalo hump**, **striae**, and proximal muscle weakness due to chronic glucocorticoid excess. - Although it can cause **menstrual irregularities** and mild **hirsutism** [2], the overall clinical picture including the absence of other specific Cushingoid features makes it less likely than PCOS.
Question 10: A 35-year-old obese female presents with worsening hirsutism and elevated testosterone levels. Which of the following is true?
- A. She is at risk of cervical cancer
- B. She is at risk of endometrial cancer (Correct Answer)
- C. She is at risk of ovarian cancer
- D. None of the above
Explanation: ***She is at risk of endometrial cancer*** - The combination of **obesity**, **hirsutism**, and **high testosterone** in a 35-year-old female is highly suggestive of **Polycystic Ovary Syndrome (PCOS)**. - PCOS is associated with **anovulation**, leading to unopposed estrogen exposure which increases the risk of **endometrial hyperplasia** and **cancer**. *She is at risk of cervical cancer* - **Cervical cancer** is primarily caused by persistent infection with **high-risk human papillomavirus (HPV)**. - The patient's presentation of hirsutism and high testosterone does not directly indicate an increased risk of cervical cancer. *She is at risk of ovarian cancer* - While PCOS is a risk factor for some types of cancer, it is not consistently linked to an increased risk of common **epithelial ovarian cancers**. - There is a debated, but not strongly established, link between PCOS and certain **sex cord stromal tumors** of the ovary, but not the more common forms of ovarian cancer. *None of the above* - This option is incorrect because the clinical picture strongly points to a condition (PCOS) that significantly increases the risk for endometrial cancer.
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