Preoperative and Postoperative Care Practice Questions

Q: Which of the following is not a known complication associated with the procedure done in the patient?

Refeeding. ***Refeeding*** - The image shows a **central venous catheter (CVC)**, likely in the internal jugular vein. While CVCs are used for administering nutrition such as **total parenteral nutrition (TPN)**, refeeding syndrome is a metabolic complication that occurs when nutrition is reintroduced too quickly in severely malnourished patients. - **Refeeding syndrome is NOT a direct complication of the CVC insertion procedure itself**—it is a systemic metabolic complication related to the nutritional intervention (characterized by severe shifts in fluids and electrolytes, particularly hypophosphatemia, hypokalemia, and hypomagnesemia). - Therefore, refeeding is **not associated with the procedure** of CVC insertion. *Pneumothorax* - **Pneumothorax** is a well-recognized mechanical complication of central venous catheterization, particularly with subclavian and internal jugular vein approaches. - Occurs due to accidental puncture of the **pleura** during needle insertion, allowing air to enter the pleural space and causing lung collapse. - Incidence ranges from 1-6% depending on the site and operator experience. *Arrhythmia* - **Cardiac arrhythmias** are a known complication during CVC insertion when the guidewire or catheter tip inadvertently advances too far into the heart chambers (right atrium or ventricle). - Mechanical irritation of the myocardium can trigger **premature ventricular contractions (PVCs)** or other arrhythmias. - Usually transient and resolve upon withdrawing the catheter to proper position. *Aspiration* - While **aspiration** can occur in critically ill patients who require CVCs (due to altered consciousness, dysphagia, or ventilator-associated issues), it is **not a direct mechanical complication of the CVC insertion procedure itself**. - Aspiration relates to patient condition rather than the catheter placement technique, though both may coexist in the same clinical scenario.

Q: Secondary hemorrhage is seen:

7-14 days after surgery. ***7-14 days after surgery*** - **Secondary hemorrhage** is typically caused by **infection** leading to erosion of blood vessels, which takes several days to develop. - This type of bleeding is characterized by onset more than 24 hours after surgery, commonly occurring between **7 to 14 days post-operatively**. *6 h after surgery* - Hemorrhage occurring within the first 24 hours (or particularly within the first few hours) is usually classified as **primary hemorrhage**. - **Primary hemorrhage** is often due to inadequate hemostasis during the initial surgical procedure. *24 h after surgery* - Bleeding at 24 hours post-surgery still falls under the definition of **primary or reactionary hemorrhage**. - **Reactionary hemorrhage** occurs within the first 24 hours due to dislodgement of clots or changes in blood pressure. *During anesthesia* - Hemorrhage during anesthesia is by definition **primary hemorrhage**, occurring contemporaneously with the surgical procedure. - This is directly related to surgical technique or patient factors during the operation itself.

Q: Which of the following is not a risk factor for postoperative pulmonary complication?

Normal BMI (18.5-24.9). ***Patient with 20 pack years of smoking*** - This is a significant risk factor for postoperative pulmonary complications, as **chronic smoking** impairs lung function and mucociliary clearance. - Patients with a history of **20 pack-years or more** are at a substantially increased risk of developing atelectasis, pneumonia, and respiratory failure after surgery. *Normal BMI (18.5-24.9)* - A **normal BMI** is not considered a risk factor for postoperative pulmonary complications; instead, it is associated with a lower risk compared to obesity or underweight states. - Patients with a normal BMI generally have **better respiratory mechanics** and lung volumes, reducing their susceptibility to pulmonary issues. *Age 25-40 years* - This age range is generally associated with a **lower risk** of postoperative pulmonary complications compared to very young or elderly patients. - Younger adults typically have **better physiological reserves** and healthier lungs, contributing to a reduced incidence of respiratory problems post-surgery. *Upper abdominal surgery* - **Upper abdominal surgery** is a significant risk factor for postoperative pulmonary complications due to its proximity to the diaphragm. - It often leads to **diaphragmatic dysfunction**, reduced lung volumes, and increased pain, all of which predispose patients to atelectasis and pneumonia.

Q: All of the following are indicators of adequacy of pre-operative resuscitation except

C-reactive protein level. ***C-reactive protein level*** - **C-reactive protein (CRP)** is an inflammatory marker and is not a direct indicator of the adequacy of pre-operative fluid and hemodynamic resuscitation. An elevated CRP suggests ongoing inflammation or infection, not necessarily a deficit in perfusion or hydration. - While inflammation can coincide with critical illness requiring resuscitation, CRP itself does not provide real-time information about **organ perfusion**, **oxygen delivery**, or **fluid status**. *Hematocrit level* - **Hematocrit** levels are crucial for assessing factors like **blood loss** and **hemoconcentration**, which directly impact the need for and adequacy of resuscitation. An increasing hematocrit can indicate hemoconcentration, while a decreasing hematocrit may suggest blood loss. - It helps guide decisions regarding **blood product transfusions** and overall fluid management. *Consciousness level* - The **level of consciousness** is a vital clinical indicator of **cerebral perfusion** and overall brain oxygenation. Deterioration can signal inadequate resuscitation and poor cerebral blood flow. - Improvements in consciousness level after interventions suggest improved **systemic perfusion** and oxygen delivery to the brain. *Urine output* - **Urine output** is a sensitive and widely used indicator of **renal perfusion** and overall systemic hydration status. Adequate urine output (e.g., >0.5 mL/kg/hr) suggests sufficient renal blood flow. - Low or absent urine output can indicate **hypovolemia**, **poor cardiac output**, or **renal hypoperfusion**, highlighting the need for further resuscitation.

Q: Which of the following is not a component of the Goldman Revised Cardiac Risk Index?

Age > 80 yrs. ***Age > 80 yrs*** - **Age** is not a parameter included in the Goldman Revised Cardiac Risk Index for predicting postoperative cardiac complications. - The index focuses on specific medical conditions and surgical risk factors. *History of preoperative treatment with insulin* - This is a component of the **Goldman Revised Cardiac Risk Index**, indicating **insulin-dependent diabetes mellitus**. - Diabetes requiring insulin treatment is a significant risk factor for cardiac complications during surgery. *History of preoperative serum creatinine >2.0 mg/dL* - An elevated **serum creatinine** (>2.0 mg/dL) is a recognized component of the index, reflecting **renal insufficiency**. - **Renal impairment** is associated with increased cardiac risk in the perioperative period. *History of ischemic heart disease* - This is a key component of the Goldman Revised Cardiac Risk Index, as a history of **ischemic heart disease** (e.g., prior myocardial infarction, angina) significantly increases perioperative cardiac risk. - Patients with existing heart disease are more susceptible to cardiac events during and after surgery.

Q: If suture marks are to be avoided, skin sutures should be removed by:

1 week. ***Correct: 1 week*** - Skin sutures are typically removed around **7 days (1 week)** to prevent the formation of **track marks** or permanent scarring along the suture lines. - By this time, sufficient wound healing has occurred for the incision to withstand normal tension, reducing the risk of **dehiscence**. - This timing balances adequate healing with minimal scarring, especially important for cosmetically sensitive areas like the face and neck. *Incorrect: 72 hours* - Removing sutures after only **72 hours (3 days)** is generally too early, as the wound may not have acquired enough tensile strength, increasing the risk of **wound dehiscence**. - While this might minimize suture marks, the primary concern is proper wound healing and closure before suture removal. *Incorrect: 3 weeks* - Leaving sutures in for **3 weeks** is significantly longer than necessary and will almost certainly result in prominent **suture marks** due to epithelialization around the suture material. - Prolonged presence of sutures can also increase the risk of **infection** and foreign body reactions. *Incorrect: 2 weeks* - While sometimes appropriate for areas of high tension or slower healing (e.g., joints, back), **2 weeks** often leads to more noticeable **suture marks** compared to removal at 1 week, particularly in cosmetically sensitive areas. - The goal is to remove sutures as soon as the wound is stable enough to minimize scar formation.

Q: Which of the following is the most pathognomonic sign of impending burst abdomen:

Serosanguinous discharge. ***Serosanguinous discharge*** - The appearance of **serosanguinous discharge** from a surgical wound is the most specific and alarming sign of impending **burst abdomen** (dehiscence). - This discharge indicates that the underlying fascial layers have separated, allowing peritoneal fluid and some blood to leak through the skin incision. *Pain* - While pain can be a symptom, it is a **non-specific finding** that can be attributed to various postoperative complications or normal wound healing. - Significant pain alone does not definitively indicate an impending **burst abdomen**, although worsening pain might suggest a problem. *Fever* - Fever indicates an **inflammatory response** or **infection**, which can be a risk factor for wound dehiscence but is not a direct sign of fascial separation. - Many postoperative patients experience low-grade fever without dehiscence, and fever can be due to lung collapse (atelectasis) or urinary tract infection. *Shock* - Shock is a sign of **severe systemic compromise**, such as sepsis or significant hemorrhage, which can be complications of a burst abdomen but not an early or pathognomonic sign of impending dehiscence itself. - By the time a patient is in shock due to a burst abdomen, the dehiscence will likely be overtly evident rather than merely impending.

Q: Blood loss during major surgery is best estimated by:

Suction bottles. ***Suction bottles*** - Measuring the volume of fluid collected in **suction bottles** (after subtracting irrigating fluid) provides a direct and quantifiable estimate of blood loss. - This method is widely used in surgery due to its **simplicity and relative accuracy** for assessing blood collected from the surgical field. *Transesophageal USG Doppler* - This technique primarily assesses **cardiac function** and **blood flow dynamics**, not directly quantifying blood loss. - While it can indicate hypovolemia, it doesn't provide a precise measurement of the volume of blood lost. *Visual assessment* - **Visual estimation** of blood loss by surgical staff is notoriously inaccurate and can lead to significant underestimation or overestimation. - It is highly subjective and depends on factors like lighting, the color of the blood-soaked materials, and individual experience. *Cardiac output by thermodilution* - **Thermodilution** is used to measure cardiac output, which can reflect hemodynamic status and help guide fluid resuscitation. - It does not directly quantify the amount of blood lost but rather assesses the **body's response** to blood loss.

Q: Optimum urine output in post-operative patient:

1 ml/kg/hr. ***1 ml/kg/hr*** - This is the **optimal urine output** for routine post-operative monitoring, indicating adequate renal perfusion and hydration status. - The **minimum acceptable** urine output is **0.5 ml/kg/hr**, but aiming for 1 ml/kg/hr ensures a comfortable margin above the critical threshold. - This target helps prevent **acute kidney injury** and ensures proper waste excretion without requiring excessive fluid administration. *2 ml/kg/hr* - While this is a **perfectly acceptable** urine output indicating good hydration, it exceeds the standard **optimal target** for routine post-operative monitoring. - It may be appropriate in specific contexts (e.g., young patients, high fluid intake), but is higher than the general recommended target. - This output does not necessarily indicate overhydration in most post-operative patients. *3 ml/kg/hr* - This higher output is generally above routine targets and may indicate **increased fluid administration** or diuresis. - While not necessarily harmful, it's not the standard optimal target for typical post-operative care. - May be intentionally targeted in specific conditions like rhabdomyolysis or tumor lysis syndrome. *4 ml/kg/hr* - This significantly elevated output is well above standard monitoring targets for routine post-operative care. - While it could occur with aggressive hydration or diuretic use, it's not considered the optimal baseline target. - Such outputs require assessment of fluid balance and potential causes of polyuria.

Question 1

Which of the following is not a known complication associated with the procedure done in the patient?

Accepted Answer

Refeeding

Answer

Aspiration

Answer

Pneumothorax

Answer

Arrhythmia

Question 2

Secondary hemorrhage is seen:

Accepted Answer

7-14 days after surgery

Answer

6 h after surgery

Answer

24 h after surgery

Answer

During anesthesia

Question 3

Which of the following is not a risk factor for postoperative pulmonary complication?

Accepted Answer

Normal BMI (18.5-24.9)

Answer

Age 25-40 years

Answer

Upper abdominal surgery

Answer

Patient with 20 pack years of smoking

Question 4

All of the following are indicators of adequacy of pre-operative resuscitation except

Accepted Answer

C-reactive protein level

Answer

Hematocrit level

Answer

Consciousness level

Answer

Urine output

Question 5

Which of the following is not a component of the Goldman Revised Cardiac Risk Index?

Accepted Answer

Age > 80 yrs

Answer

History of preoperative treatment with insulin

Answer

History of preoperative serum creatinine >2.0 mg/dL

Answer

History of ischemic heart disease

Question 6

If suture marks are to be avoided, skin sutures should be removed by:

Accepted Answer

1 week

Answer

72 hours

Answer

3 weeks

Answer

2 weeks

Question 7

Which of the following is the most pathognomonic sign of impending burst abdomen:

Accepted Answer

Serosanguinous discharge

Answer

Pain

Answer

Fever

Answer

Shock

Question 8

Blood loss during major surgery is best estimated by:

Accepted Answer

Suction bottles

Answer

Transesophageal USG Doppler

Answer

Visual assessment

Answer

Cardiac output by thermodilution

Question 9

Which of the following surgical incisions is associated with the highest risk of postoperative pulmonary complications ?

Accepted Answer

Lateral thoracotomy

Answer

Median sternotomy

Answer

Horizontal laparotomy

Answer

Vertical laparotomy

Question 10

Optimum urine output in post-operative patient:

Accepted Answer

1 ml/kg/hr

Answer

2 ml/kg/hr

Answer

3 ml/kg/hr

Answer

4 ml/kg/hr

Preoperative and Postoperative Care — MCQs

Preoperative and Postoperative Care — MCQs

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