Multiple Organ Dysfunction Syndrome — MCQs
Congenital rubella syndrome is associated with:
Two of 3 family members have dinner at a local restaurant and, within 48 hours, start experiencing double vision, difficulty in swallowing and speaking, and breathing problems. These symptoms are consistent with which of the following?
A child presents with abdominal pain, arthralgia, hematuria, and hypertension. What is the diagnosis?
A child with 22-25 stool/day, 3 day old pneumonitis, no passage of urine from 36 hours. low B.P. Blood pH – 7.21. Urine Na+–18 meq/L, S. Urea 120, serum Creatinine 1.2 indicate –
Which condition is commonly associated with Disseminated Intravascular Coagulation (D.I.C.)?
Which of the following is the correct management of abdominal compartment syndrome?
Hemolytic uraemic syndrome is associated with
Which of the following are correct in respect of Systemic Inflammatory Response Syndrome (SIRS)? 1. It is caused by the release of lipopolysaccharide endotoxin from dying E. coli bacteria. 2. It is same as bacteraemia. 3. It results in Multiple Organ Dysfunction Syndrome (MODS). 4. White cell counts of more than 12 × 10^9/litre are present. Select the answer using the code given below.
Which virus is most commonly recognized as a prototypical viral hemorrhagic fever in endemic regions of West Africa?
Characterized by chronic, multiple tics, what is the condition?
Multiple Organ Dysfunction Syndrome Indian Medical PG Practice Questions and MCQs
Question 1: Congenital rubella syndrome is associated with:
- A. Congenital heart disease
- B. Sensorineural hearing loss
- C. Cataract
- D. All of the options (Correct Answer)
Explanation: ***All of the options*** - Congenital rubella syndrome (CRS) is well-known for causing a triad of **birth defects** affecting the heart, eyes, and ears, often referred to as **Gregg's triad**. - Exposure to the rubella virus during early pregnancy can lead to a range of severe and permanent anomalies in the developing fetus. *Congenital heart disease* - Common cardiac abnormalities associated with CRS include **patent ductus arteriosus (PDA)**, pulmonary artery stenosis, and ventricular septal defects (VSDs). - These defects arise from the virus interfering with the normal development of the **fetal heart** during the first trimester. *Sensorineural hearing loss* - This is one of the most common and often the **only manifestation** of CRS, leading to significant impairment. - The rubella virus can directly damage the **inner ear structures**, particularly the cochlea, resulting in permanent hearing loss. *Cataract* - Ocular defects such as **cataracts** (clouding of the lens), microphthalmia (small eyes), and glaucoma are characteristic features of CRS. - These conditions are due to the virus disrupting the normal development of the **fetal eye**, especially when infection occurs in the first 8 weeks of gestation.
Question 2: Two of 3 family members have dinner at a local restaurant and, within 48 hours, start experiencing double vision, difficulty in swallowing and speaking, and breathing problems. These symptoms are consistent with which of the following?
- A. Activation of cyclic AMP
- B. Invasion of the gut epithelium by an organism
- C. Endotoxin shock
- D. Ingestion of a neurotoxin (Correct Answer)
Explanation: ***Ingestion of a neurotoxin*** - The symptoms of **double vision**, **difficulty swallowing (dysphagia)**, **difficulty speaking (dysarthria)**, and **breathing problems** are classic manifestations of **botulism**, a severe form of food poisoning caused by the **botulinum neurotoxin** [1, 2]. - The rapid onset (within 48 hours) and association with a shared meal at a restaurant strongly suggest exposure to a preformed toxin, which is characteristic of foodborne botulism [2]. *Activation of cyclic AMP* - This mechanism is characteristic of toxins like **cholera toxin** or **E. coli enterotoxin**, which cause **secretory diarrhea** by increasing fluid and electrolyte secretion in the gut. - It does not explain the neurological symptoms observed, such as double vision, dysphagia, or breathing difficulties [2]. *Invasion of the gut epithelium by an organism* - This mechanism is typical of diseases caused by invasive bacteria like *Salmonella*, *Shigella*, or some strains of *E. coli*, leading primarily to symptoms like **inflammatory diarrhea**, fever, and abdominal pain [2]. - It does not account for the specific neurological signs of cranial nerve dysfunction and paralysis. *Endotoxin shock* - **Endotoxin shock**, also known as septic shock, is caused by the release of **lipopolysaccharide (LPS)** from gram-negative bacteria, leading to a systemic inflammatory response. - Symptoms include **fever**, **hypotension**, **tachycardia**, and **multiorgan dysfunction**, not the specific neurological symptoms described here.
Question 3: A child presents with abdominal pain, arthralgia, hematuria, and hypertension. What is the diagnosis?
- A. Dengue
- B. Rheumatic fever
- C. Henoch-Schönlein Purpura
- D. Hemolytic uremic syndrome (Correct Answer)
Explanation: ***Hemolytic uremic syndrome*** - The combination of **abdominal pain**, **hematuria**, and **hypertension** in a child, particularly after a diarrheal illness, is highly suggestive of **hemolytic uremic syndrome (HUS)** [1], [2]. - HUS is characterized by **microangiopathic hemolytic anemia**, **thrombocytopenia**, and **acute kidney injury**, which can manifest as hematuria and hypertension [1], [2]. *Dengue* - While **abdominal pain** and **arthralgia** can be symptoms of dengue, it typically also presents with **fever**, **rash**, and **bleeding manifestations** like petechiae or mucosal bleeding. - Dengue does not typically cause **hematuria** with **hypertension** as a primary feature of renal involvement. *Rheumatic fever* - **Rheumatic fever** is characterized by **arthralgia** (migratory arthritis), but it is primarily a sequela of **Streptococcal pharyngitis** and presents with **carditis**, **chorea**, **erythema marginatum**, and **subcutaneous nodules**. - It does not typically cause the combination of **abdominal pain**, **hematuria**, and **hypertension** seen here. *Henoch-Schönlein Purpura* - **Henoch-Schönlein Purpura (HSP)** involves **abdominal pain**, **arthralgia**, and **hematuria**, and can sometimes cause hypertension. - However, the hallmark of HSP is a **palpable purpuric rash** on the lower extremities and buttocks, which is not mentioned in the patient's presentation.
Question 4: A child with 22-25 stool/day, 3 day old pneumonitis, no passage of urine from 36 hours. low B.P. Blood pH – 7.21. Urine Na+–18 meq/L, S. Urea 120, serum Creatinine 1.2 indicate –
- A. Acute tubular necrosis
- B. Acute cortical necrosis
- C. Acute medullary necrosis
- D. Pre–renal Azotemia (Correct Answer)
Explanation: ***Pre–renal Azotemia*** - Pre-renal azotemia is characterized by **reduced renal perfusion**, leading to decreased glomerular filtration rate and increased reabsorption of water and urea due to activation of the renin-angiotensin-aldosterone system. - The combination of **low blood pressure**, no urine output for 36 hours, metabolic acidosis (pH 7.21), elevated urea (120) and creatinine (1.2), and a relatively normal urine sodium (18 meq/L) despite severe dehydration (22-25 stools/day) is highly indicative of pre-renal azotemia as the kidneys are attempting to conserve sodium and water in response to hypovolemia. *Acute tubular necrosis* - **Acute tubular necrosis (ATN)** typically presents with a **high urine sodium** (>40 meq/L) due to damaged tubules failing to reabsorb sodium effectively, which contradicts the given urine sodium of 18 meq/L. - Although it can cause acute kidney injury with elevated BUN/creatinine and acidosis, the clinical picture here is more consistent with pre-renal causes due to the preserved tubular function indicated by low urine Na+ and oliguria in the setting of severe hypovolemia. *Acute cortical necrosis* - **Acute cortical necrosis** is a rare and severe form of acute kidney injury involving widespread necrosis of the renal cortex, often leading to **irreversible renal failure** and anuria. - While it can present with anuria, it is less common in children with gastroenteritis and hypovolemia, and the initial presentation of preserved tubular function (low urine sodium) points away from significant intrinsic damage. *Acute medullary necrosis* - **Acute medullary necrosis**, also known as **renal papillary necrosis**, primarily affects the renal medulla and papillae, often associated with conditions like sickle cell disease, diabetes, or NSAID abuse. - This condition is unlikely in a child presenting with severe dehydration and hypovolemia from gastroenteritis.
Question 5: Which condition is commonly associated with Disseminated Intravascular Coagulation (D.I.C.)?
- A. Acute myelomonocytic leukemia
- B. Chronic myeloid leukemia
- C. Autoimmune hemolytic anemia
- D. Acute promyelocytic leukemia (Correct Answer)
Explanation: ***Acute promyelocytic leukemia*** - **Disseminated Intravascular Coagulation (D.I.C.)** is commonly associated with acute promyelocytic leukemia due to the release of **tissue factor** from promyelocytes [1]. - Patients typically present with **severe bleeding** and coagulopathy [1], driven by the rapid proliferation of these abnormal cells. *Acute myelomonocytic leukemia* - While this type of leukemia presents with myelomonocytic features, it is less frequently associated with **D.I.C.** compared to acute promyelocytic leukemia. - This condition is often characterized by **monocytic infiltration** but does not typically cause the severe coagulopathy associated with D.I.C. *Autoimmune hemolytic anemia* - This condition causes **hemolysis** due to antibodies but is mainly associated with **anemia**, not a coagulation disorder like D.I.C. - **D.I.C.** involves widespread **consumption coagulopathy** [1], which is not a feature of autoimmune hemolytic anemia. *CMC* - CMC refers to **Chronic Myeloid Leukemia**, which does not commonly lead to **D.I.C.** and presents primarily with splenomegaly and **chronic symptoms**. - The coagulation profile in CMC tends to be stable, with no link to the acute coagulopathy seen in D.I.C.
Question 6: Which of the following is the correct management of abdominal compartment syndrome?
- A. Antihypertensives
- B. Urgent Fasciotomy
- C. Wait and monitor for 24 hours
- D. Urgent decompressive laparotomy (Correct Answer)
Explanation: ***Urgent decompressive laparotomy*** - The definitive treatment for abdominal compartment syndrome (ACS) is **urgent surgical decompression** via **decompressive laparotomy**. - This involves opening the abdominal fascia to immediately **reduce intra-abdominal pressure (IAP)**, typically indicated when IAP >20 mmHg with new organ dysfunction. - Decompression is crucial to prevent irreversible organ damage, restore perfusion to compressed organs, and improve ventilation. - The abdomen is often left open temporarily with negative pressure wound therapy until the patient stabilizes. *Antihypertensives* - Antihypertensives may manage systemic hypertension but do not address the **elevated intra-abdominal pressure** that is the primary pathology in ACS. - This approach is insufficient and could worsen **organ perfusion** by reducing the perfusion pressure gradient (MAP - IAP) to already compressed abdominal organs. - ACS requires mechanical decompression, not pharmacological blood pressure management. *Urgent Fasciotomy* - Fasciotomy is the correct treatment for **extremity compartment syndrome** (e.g., leg, forearm), where it relieves pressure within muscle compartments. - It is anatomically inappropriate for **abdominal compartment syndrome**, which requires opening the abdominal cavity, not limb fascial compartments. - This represents a fundamental misunderstanding of the anatomical site requiring decompression. *Wait and monitor for 24 hours* - ACS is a **surgical emergency** that can rapidly progress to multiorgan failure, acute kidney injury, respiratory failure, and cardiovascular collapse. - Delaying intervention by 24 hours would likely result in **irreversible organ damage** and significantly increased mortality. - Once diagnosed (IAP >20 mmHg with organ dysfunction), urgent decompression is mandatory.
Question 7: Hemolytic uraemic syndrome is associated with
- A. Bartonella henselae
- B. Malaria
- C. E. coli 0157 (Correct Answer)
- D. Parvovirus B19
Explanation: ***E. coli O157*** - **Hemolytic uremic syndrome (HUS)** is most commonly associated with infection by **Shiga toxin-producing E. coli (STEC)**, particularly serotype O157:H7 [2]. - The Shiga toxin damages the **endothelium** of blood vessels, leading to **thrombotic microangiopathy**, which manifests as **hemolytic anemia**, **thrombocytopenia**, and **acute kidney injury** [1], [2]. *Bartonella henselae* - This bacterium is the causative agent of **cat scratch disease**, characterized by **lymphadenopathy** and sometimes systemic symptoms. - It is not typically associated with hemolytic uremic syndrome. *Malaria* - Malaria is a **parasitic infection** transmitted by mosquitoes, causing **fever**, **chills**, and **anemia** due to red blood cell lysis. - While it can cause anemia, it does not directly lead to the thrombotic microangiopathy of HUS. *Parvovirus B19* - **Parvovirus B19** causes **erythema infectiosum (fifth disease)** in children and can cause **aplastic crisis** in individuals with underlying hemolytic disorders. - It primarily targets erythroid precursors in the bone marrow but is not directly linked to HUS.
Question 8: Which of the following are correct in respect of Systemic Inflammatory Response Syndrome (SIRS)? 1. It is caused by the release of lipopolysaccharide endotoxin from dying E. coli bacteria. 2. It is same as bacteraemia. 3. It results in Multiple Organ Dysfunction Syndrome (MODS). 4. White cell counts of more than 12 × 10^9/litre are present. Select the answer using the code given below.
- A. 2, 3 and 4
- B. 1, 2 and 3
- C. 1, 3 and 4 (Correct Answer)
- D. 1, 2 and 4
Explanation: ***1, 3 and 4*** - **SIRS** can be caused by the release of **lipopolysaccharide endotoxin** from the cell wall of dying **Gram-negative bacteria** like *E. coli*, triggering a systemic inflammatory response [1]. - One of the major complications of **SIRS** is the progression to **Multiple Organ Dysfunction Syndrome (MODS)**, where organs begin to fail due to uncontrolled inflammation [1]. - A component of the **SIRS criteria** is a white blood cell count greater than 12 x 10^9/L or less than 4 x 10^9/L, or the presence of more than 10% immature band forms [1]. *2, 3 and 4* - **Bacteremia** refers specifically to the presence of **viable bacteria** in the bloodstream, while **SIRS** is a broader inflammatory response that can be triggered by various causes (infectious or non-infectious). - While bacteremia can lead to SIRS, SIRS can also occur without bacteremia (e.g., pancreatitis, trauma). *1, 2 and 3* - **Bacteremia** is not the same as SIRS; bacteremia is a potential cause of SIRS, but SIRS can arise from non-infectious conditions as well. - The presence of bacteria in the blood (bacteremia) is a specific finding, whereas SIRS describes a *syndrome* of systemic inflammation. *1, 2 and 4* - This option incorrectly states that **SIRS is the same as bacteremia**, which it is not. - Also, while bacteremia can lead to SIRS, **MODS** is a crucial and often fatal consequence of advanced SIRS, which is omitted in this option.
Question 9: Which virus is most commonly recognized as a prototypical viral hemorrhagic fever in endemic regions of West Africa?
- A. Lassa fever virus (Correct Answer)
- B. West Nile virus
- C. Yellow fever virus
- D. Crimean-Congo hemorrhagic fever virus
Explanation: ***Lassa fever virus*** - Lassa fever is a prototypical **viral hemorrhagic fever (VHF)** endemic to West Africa, caused by an **Arenavirus** transmitted through contact with rodent (Mastomys) excreta. - Characterized by fever, hemorrhagic manifestations in severe cases (15-20%), and multi-organ involvement with high mortality in hospitalized patients. - Represents one of the most important VHFs due to its **endemic nature** affecting millions annually in West Africa. *Yellow fever virus* - Yellow fever causes hemorrhagic fever with prominent **jaundice** and **hepatic necrosis**, transmitted by *Aedes* mosquitoes. - A **Flavivirus** causing "yellow" fever due to liver damage, but vaccine-preventable and less commonly seen in modern practice in endemic regions. *West Nile virus* - A **Flavivirus** primarily causing **neuroinvasive disease** (meningitis, encephalitis) rather than hemorrhagic fever. - Hemorrhagic manifestations are **extremely rare** and not characteristic of West Nile virus infection. *Crimean-Congo hemorrhagic fever virus* - CCHF is a severe **tick-borne VHF** (Nairovirus) with prominent hemorrhagic features and high mortality (10-40%). - Endemic to **Africa, Asia, Eastern Europe, and Middle East** but NOT West Africa, distinguishing its geographic distribution from Lassa fever.
Question 10: Characterized by chronic, multiple tics, what is the condition?
- A. Parkinson's disease
- B. Wilson's disease
- C. Shy-Drager syndrome
- D. Tourette's syndrome (Correct Answer)
Explanation: ***Tourette's syndrome*** - This syndrome is defined by **multiple motor tics** and at least one **vocal tic** that persist for more than one year. - Tics in Tourette's syndrome are typically **sudden**, rapid, recurrent, nonrhythmic **movements** or vocalizations. *Parkinson's disease* - Characterized by **tremor at rest**, **bradykinesia**, **rigidity**, and postural instability. - While it involves movement disorders, it does not typically present with the characteristic tics seen in Tourette's. *Wilson's disease* - An **autosomal recessive disorder** causing excessive copper accumulation in the liver, brain, and other organs. - Manifestations include **hepatic dysfunction**, neurologic symptoms like **tremor** and **dystonia**, and **Kayser-Fleischer rings**, not tics. *Shy-Drager syndrome* - This is an older term for **multiple system atrophy (MSA)**, a progressive neurodegenerative disorder. - It primarily affects the **autonomic nervous system**, leading to **orthostatic hypotension**, cerebellar ataxia, and parkinsonism, but not tics.
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