Preoperative and Postoperative Care Practice Questions

Q: A female, 12 hours post open cholecystectomy under general anesthesia, presents with dyspnea and crepitations in the right lower lobe. What is the probable cause?

Atelectasis. ### Explanation **Correct Option: B. Atelectasis** Atelectasis (alveolar collapse) is the most common cause of postoperative fever and respiratory distress within the first **24–48 hours** after surgery. * **Mechanism:** In upper abdominal surgeries (like open cholecystectomy), diaphragmatic dysfunction, pain-induced splinting, and the effects of general anesthesia lead to shallow breathing and decreased functional residual capacity (FRC). This results in the collapse of small airways, typically in the basal lobes. * **Clinical Presentation:** Patients present with dyspnea, tachypnea, and characteristic **fine crepitations** (crackles) over the affected area. **Why other options are incorrect:** * **A. Drug-induced collapse:** While opioids can cause respiratory depression, they typically present with a decreased respiratory rate (bradypnea) and sedation rather than localized crepitations. * **C. Pulmonary edema:** This usually presents with bilateral diffuse crackles, frothy sputum, and signs of fluid overload or cardiac failure, rather than localized findings in the right lower lobe. * **D. Myocardial infarction:** While possible, it is rare in a young female post-cholecystectomy without prior history. It would more likely present with chest pain and ECG changes rather than isolated basal crepitations. **High-Yield Clinical Pearls for NEET-PG:** * **Timeline:** Atelectasis is the most common cause of fever on **Postoperative Day 1 (POD 1)**. * **Risk Factors:** Upper abdominal and thoracic surgeries carry the highest risk due to proximity to the diaphragm. * **Prevention/Treatment:** Incentive spirometry, early mobilization, and adequate analgesia (to prevent splinting) are the mainstays of management. * **Mnemonic (5 W’s of Post-op Fever):** **W**ind (Atelectasis - Day 1-2), **W**ater (UTI - Day 3), **W**alking (DVT/PE - Day 5), **W**ound (Infection - Day 7), **W**onder drugs (Drug fever).

Q: In a patient recovering from peritonitis, which of the following would be the most characteristic sign of pelvic abscess?

All of the above. **Explanation:** A **pelvic abscess** is a common complication following generalized peritonitis (e.g., from a perforated appendix or diverticulitis), as infected fluid naturally tracks down into the rectovesical pouch (in men) or the pouch of Douglas (in women) due to gravity. **Why "All of the above" is correct:** The clinical presentation of a pelvic abscess is characterized by a combination of systemic inflammatory signs and local irritative symptoms: 1. **Tachycardia & Fever (Options A & B):** These are the hallmarks of a "swinging" pyrexia (hectic fever) and systemic toxicity. In a patient who was initially recovering from peritonitis but suddenly develops a new-onset fever and rising pulse rate, an occult abscess should be the first suspicion. 2. **Abdominal Pain (Option B):** While the pain may be localized to the lower abdomen or pelvis, it is a consistent feature of the inflammatory process. 3. **Mucus in Stool (Option C):** This is the **most characteristic localizing sign**. The abscess lies in direct contact with the anterior wall of the rectum. The resulting inflammation causes pelvic congestion and irritation of the rectal mucosa, leading to the discharge of mucus, a feeling of rectal fullness, and **tenesmus** (spurious diarrhea). **Clinical Pearls for NEET-PG:** * **Gold Standard Diagnosis:** A **Digital Rectal Examination (DRE)** is the most important clinical step; it typically reveals a tender, boggy swelling in the anterior rectal wall. * **Imaging:** Contrast-enhanced CT (CECT) is the investigation of choice for localization. * **Management:** The classic dictum is "drainage where it points." Most pelvic abscesses are drained transrectally (or transvaginally) if they are palpable via DRE. * **High-Yield Sign:** Always look for "spurious diarrhea" or "mucus diarrhea" in a post-op patient as a trigger word for pelvic abscess.

Q: On postoperative day 5, an otherwise healthy 55-year-old man recovering from a partial hepatectomy is noted to have a fever of 38.6°C (101.5°F). Which of the following is the most common nosocomial infection postoperatively?

Urinary tract infection. ### Explanation **Correct Answer: C. Urinary tract infection** In the postoperative setting, **Urinary Tract Infection (UTI)** is statistically the most common nosocomial (hospital-acquired) infection. This is primarily attributed to the frequent use of indwelling urinary catheters (Foley catheters) during and after major surgeries like a partial hepatectomy. Catheter-associated UTI (CAUTI) accounts for approximately 40% of all hospital-acquired infections. **Analysis of Options:** * **A. Wound Infection (Surgical Site Infection - SSI):** While common, SSIs typically manifest between postoperative days 5 and 7. Although a major cause of morbidity, they occur less frequently than UTIs across general surgical populations. * **B. Pneumonia:** This is a significant cause of postoperative fever, especially in patients with upper abdominal incisions (due to splinting and atelectasis). However, it ranks behind UTI in overall incidence. * **D. Intra-abdominal Abscess:** This is a specific complication of abdominal surgery (like hepatectomy) and usually presents later (postoperative day 7–10) with spiking fevers and localized symptoms. **NEET-PG High-Yield Pearls:** * **The "5 W’s" of Postoperative Fever:** 1. **Wonder** (0-24 hrs): Malignant hyperthermia, pre-existing infection. 2. **Wind** (Days 1-2): Atelectasis (most common cause of early fever), Pneumonia. 3. **Water** (Days 3-5): **UTI** (Most common nosocomial infection overall). 4. **Walking** (Days 5-7): DVT/Pulmonary Embolism. 5. **Wound** (Days 7+): Surgical Site Infection (SSI). 6. **Wonder drugs:** Drug-induced fever (anytime). * **Gold Standard for UTI Diagnosis:** Urine culture showing >10⁵ colony-forming units (CFU)/mL. * **Prevention:** The most effective way to reduce the incidence of the most common nosocomial infection is the **early removal of the urinary catheter** (ideally within 24–48 hours).

Q: A 70-year-old woman underwent hip surgery 2 days prior for a hip fracture following a fall. She has no prior surgical history or regular medications. Over the past 24 hours, she has complained of abdominal discomfort and distension. On examination, she is afebrile with a blood pressure of 140/80 mmHg, heart rate of 110 bpm, and respiratory rate of 16 breaths/min. She has a distended, tympanic abdomen with absent bowel sounds and no rebound tenderness. Her erect abdominal X-ray is shown. What is the most likely diagnosis in this case?

Colonic pseudo-obstruction. ***Colonic pseudo-obstruction*** - Classic presentation in a **post-operative orthopedic patient** with **massive abdominal distension**, **absent bowel sounds**, and **tympanic abdomen** without peritoneal signs. - **Ogilvie's syndrome** commonly occurs after **hip surgery** in elderly patients, causing functional colonic obstruction without mechanical cause on imaging. *Acalculous cholecystitis* - Typically occurs in **critically ill ICU patients** with **right upper quadrant pain** and **fever**, which are absent here. - Would show **gallbladder wall thickening** and **pericholecystic fluid** on imaging, not generalized colonic distension. *Perforated duodenal ulcer* - Would present with **severe abdominal pain**, **rebound tenderness**, and **free air under diaphragm** on erect X-ray. - Patient would typically be **systemically unwell** with signs of **peritonitis**, not just distended abdomen. *Small bowel obstruction* - X-ray would show **dilated small bowel loops** with **air-fluid levels** and **absence of gas in colon**. - Clinical presentation includes **colicky pain**, **vomiting**, and **high-pitched bowel sounds**, unlike the absent sounds here.

Q: A 50-year-old man with a small-bowel fistula has been receiving total parenteral nutrition (TPN) for the previous 3 weeks through a single-lumen central venous catheter. He is scheduled for exploratory laparotomy and fistula closure. On the morning of the day of surgery, TPN is discontinued and intravenous infusion with balanced salt solution (Ringer's lactate) is started. An hour later, the patient is found to be anxious, sweating, and tachycardic. What is the most likely cause?

Hypoglycemia. **Explanation:** The correct answer is **Hypoglycemia**. **1. Why Hypoglycemia is the correct answer:** Total Parenteral Nutrition (TPN) contains high concentrations of glucose (dextrose). To maintain normoglycemia during TPN administration, the patient’s pancreas undergoes compensatory **hyperinsulinemia** (increased insulin secretion). When TPN is abruptly discontinued, the exogenous glucose supply stops immediately, but the high levels of circulating insulin and the suppressed gluconeogenesis persist for a short period. This leads to **rebound hypoglycemia**. The clinical presentation of anxiety, sweating (diaphoresis), and tachycardia are classic sympathetic responses to low blood sugar. **2. Why the other options are incorrect:** * **Anxiety:** While the patient is anxious, the presence of objective signs like tachycardia and diaphoresis in the context of stopping TPN points toward a metabolic derangement rather than simple preoperative stress. * **Hypovolemia:** The patient was started on Ringer’s Lactate (a balanced salt solution) immediately after stopping TPN. An hour is too short a duration for significant dehydration to manifest this acutely unless there was massive fluid loss. * **Unexplained hemorrhage:** There is no clinical evidence of bleeding (e.g., trauma, active surgical site) provided in the history. Hemorrhage would typically cause hypotension alongside tachycardia. **Clinical Pearls for NEET-PG:** * **Management:** TPN should never be stopped abruptly. It must be tapered over 24 hours or replaced with a 10% Dextrose infusion to prevent rebound hypoglycemia. * **Monitoring:** Blood glucose monitoring is mandatory for at least 1–2 hours after discontinuing TPN. * **Complications of TPN:** The most common metabolic complication is hyperglycemia; however, the most common complication upon *cessation* is hypoglycemia. Catheter-related sepsis remains the most common overall complication.

Q: A 60-year-old woman who underwent left hemicolectomy for diverticular disease presents with right calf pain and swelling, confirmed to be deep vein thrombosis (DVT). What is the most appropriate management?

Heparin. ### Explanation **Correct Option: B. Heparin** The patient has a confirmed diagnosis of Deep Vein Thrombosis (DVT) following major abdominal surgery. The standard of care for an established DVT is **therapeutic anticoagulation**. Heparin (either Unfractionated Heparin or Low Molecular Weight Heparin) is the initial treatment of choice because it prevents further clot propagation and reduces the risk of Pulmonary Embolism (PE). In the postoperative period, anticoagulation is started once the risk of surgical site bleeding is minimized. **Analysis of Incorrect Options:** * **A. Pneumatic compression stockings:** These are **prophylactic** measures used to prevent DVT in the perioperative period. Once a thrombus has already formed, they are insufficient as a primary treatment and carry a theoretical risk of dislodging the clot if used alone in the acute phase. * **C. Thrombolysis:** This is reserved for "massive" or "provoked" DVT (e.g., Phlegmasia cerulea dolens) or hemodynamically unstable PE. It carries a high risk of bleeding, making it contraindicated in the immediate postoperative period unless the condition is life-threatening. * **D. Inferior vena cava (IVC) filter:** This is indicated only when there is a **strict contraindication to anticoagulation** (e.g., active major bleeding) or if a patient develops a recurrent PE despite being on adequate therapeutic anticoagulation. **High-Yield Clinical Pearls for NEET-PG:** * **Virchow’s Triad:** Stasis, endothelial injury, and hypercoagulability (all present in major pelvic/abdominal surgery). * **Gold Standard Investigation:** Contrast Venography (rarely used now); **Investigation of Choice:** Duplex Ultrasonography. * **LMWH vs. UFH:** LMWH (e.g., Enoxaparin) is generally preferred due to a more predictable bioavailability and lower risk of Heparin-Induced Thrombocytopenia (HIT). * **Caprini Score:** Used for VTE risk stratification to decide the type of prophylaxis needed.

Q: A client who has undergone a transsphenoidal hypophysectomy should be carefully monitored for hemorrhage. Which of the following signs may indicate such bleeding?

Frequent swallowing. ### Explanation **Correct Option: B. Frequent Swallowing** Transsphenoidal hypophysectomy involves an incision through the sphenoid sinus (often via a sublabial or transnasal approach) to reach the pituitary gland. Postoperatively, the most critical site for occult hemorrhage is the posterior nasopharynx. Because the patient is often in a semi-Fowler’s position, blood trickles down the back of the throat. This triggers the swallowing reflex. Therefore, **frequent, repetitive swallowing** is a classic clinical sign of active bleeding in the nasopharynx or oropharynx, even if no external bleeding is visible from the nasal packing. **Analysis of Incorrect Options:** * **A. Bloody drainage from the ears:** This is typically associated with a basilar skull fracture (involving the petrous portion of the temporal bone), not a controlled transsphenoidal surgical approach. * **C. Guaiac-positive stools:** This indicates gastrointestinal bleeding. While stress ulcers can occur post-surgery, it is not a specific sign of immediate postoperative hemorrhage from the surgical site. * **D. Hematuria:** This indicates urinary tract trauma or pathology and is unrelated to a neurosurgical procedure on the pituitary gland. **NEET-PG High-Yield Pearls:** 1. **CSF Rhinorrhea:** Post-hypophysectomy, clear nasal drainage should be tested for **glucose** (using a dipstick) or **Beta-2 transferrin** (most specific) to rule out a CSF leak. 2. **Diabetes Insipidus (DI):** The most common postoperative complication due to manipulation of the posterior pituitary. Monitor for polyuria (>250 ml/hr) and low urine specific gravity (<1.005). 3. **Positioning:** Postoperatively, maintain the head of the bed at **30-45 degrees** to decrease intracranial pressure and prevent tension on the suture line. 4. **Avoidance of Pressure:** Patients must be instructed to avoid coughing, sneezing, or blowing their nose to prevent CSF leaks.

Q: What is the earliest sign of volume overload immediately after an operative procedure?

Weight gain. ### Explanation **1. Why Weight Gain is the Correct Answer:** In the immediate postoperative period, **weight gain** is the most sensitive and earliest indicator of fluid accumulation. This occurs because the body begins to retain water and sodium due to the surgical stress response (release of ADH and aldosterone). Even before clinical signs like edema or hypertension manifest, the total body water increases, which is reflected immediately on a weighing scale. A gain of just 500ml to 1L of fluid is detectable as weight gain, whereas other clinical signs require much larger fluid shifts. **2. Why Other Options are Incorrect:** * **Increased Blood Pressure:** Hypertension is a late and unreliable sign. In the early postoperative phase, BP can be influenced by pain, anxiety, or anesthesia recovery, making it non-specific for volume overload. * **Peripheral Edema:** This is a late sign. For peripheral edema to become clinically apparent (pitting), there must typically be an excess of at least **2 to 4 liters** of fluid in the interstitial space. * **Distended Neck Veins:** While an important sign of increased Central Venous Pressure (CVP), it usually occurs after significant intravascular volume expansion and may be masked by the patient’s position or baseline cardiac status. **3. Clinical Pearls for NEET-PG:** * **Gold Standard for Fluid Monitoring:** Daily weight measurement is the most accurate non-invasive way to monitor fluid balance in surgical patients. * **The "Third Space" Rule:** During the first 48 hours post-op, fluid shifts into the interstitial space (third spacing). Weight gain occurs here even if the patient appears intravascularly depleted. * **Post-op Diuresis:** Expect a "diuretic phase" on post-op day 3 as third-space fluid mobilizes back into the circulation. * **High-Yield Fact:** 1 kg of weight gain is roughly equivalent to 1 liter of fluid retention.

Question 1

In intravenous hyperalimentation, which of the following are administered?

Accepted Answer

Amino acids

Answer

Hypertonic saline

Answer

Fats

Answer

Dextrose

Question 2

A female, 12 hours post open cholecystectomy under general anesthesia, presents with dyspnea and crepitations in the right lower lobe. What is the probable cause?

Accepted Answer

Atelectasis

Answer

Drug-induced collapse

Answer

Pulmonary edema

Answer

Myocardial infarction

Question 3

In a patient recovering from peritonitis, which of the following would be the most characteristic sign of pelvic abscess?

Accepted Answer

All of the above

Answer

Tachycardia

Answer

Fever and abdominal pain

Answer

Mucus in stool

Question 4

On postoperative day 5, an otherwise healthy 55-year-old man recovering from a partial hepatectomy is noted to have a fever of 38.6°C (101.5°F). Which of the following is the most common nosocomial infection postoperatively?

Accepted Answer

Urinary tract infection

Answer

Wound infection

Answer

Pneumonia

Answer

Intra-abdominal abscess

Question 5

A 70-year-old woman underwent hip surgery 2 days prior for a hip fracture following a fall. She has no prior surgical history or regular medications. Over the past 24 hours, she has complained of abdominal discomfort and distension. On examination, she is afebrile with a blood pressure of 140/80 mmHg, heart rate of 110 bpm, and respiratory rate of 16 breaths/min. She has a distended, tympanic abdomen with absent bowel sounds and no rebound tenderness. Her erect abdominal X-ray is shown. What is the most likely diagnosis in this case?

Accepted Answer

Colonic pseudo-obstruction

Answer

Acalculous cholecystitis

Answer

Perforated duodenal ulcer

Answer

Small bowel obstruction

Question 6

A 50-year-old man with a small-bowel fistula has been receiving total parenteral nutrition (TPN) for the previous 3 weeks through a single-lumen central venous catheter. He is scheduled for exploratory laparotomy and fistula closure. On the morning of the day of surgery, TPN is discontinued and intravenous infusion with balanced salt solution (Ringer's lactate) is started. An hour later, the patient is found to be anxious, sweating, and tachycardic. What is the most likely cause?

Accepted Answer

Hypoglycemia

Answer

Anxiety

Answer

Hypovolemia

Answer

Unexplained hemorrhage

Question 7

A 60-year-old woman who underwent left hemicolectomy for diverticular disease presents with right calf pain and swelling, confirmed to be deep vein thrombosis (DVT). What is the most appropriate management?

Accepted Answer

Heparin

Answer

Pneumatic compression stockings

Answer

Thrombolysis

Answer

Inferior vena cava filter

Question 8

All of the following are true about fast track surgery except?

Accepted Answer

Use of romovac drain

Answer

Fasting 6 hours for solids and 2 hours for liquids

Answer

Elimination of pain by regional anesthesia

Answer

Rapid postoperative mobilization

Question 9

A client who has undergone a transsphenoidal hypophysectomy should be carefully monitored for hemorrhage. Which of the following signs may indicate such bleeding?

Accepted Answer

Frequent swallowing

Answer

Bloody drainage from the ears

Answer

Guaiac-positive stools

Answer

Hematuria

Question 10

What is the earliest sign of volume overload immediately after an operative procedure?

Accepted Answer

Weight gain

Answer

Increased Blood Pressure

Answer

Peripheral edema

Answer

Distended neck veins

Preoperative and Postoperative Care — MCQs

Preoperative and Postoperative Care — MCQs

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