Ovarian torsion management US Medical PG Practice Questions and MCQs
Practice US Medical PG questions for Ovarian torsion management. These multiple choice questions (MCQs) cover important concepts and help you prepare for your exams.
Ovarian torsion management US Medical PG Question 1: A 17-year-old girl presents to her pediatrician for a wellness visit. She currently feels well but is concerned that she has not experienced menarche. She reports to recently developing headaches and describes them as pulsating, occurring on the left side of her head, associated with nausea, and relieved by ibuprofen. She is part of the school’s rugby team and competitively lifts weights. She is currently sexually active and uses condoms infrequently. She denies using any forms of contraception or taking any medications. Her temperature is 98.6°F (37°C), blood pressure is 137/90 mmHg, pulse is 98/min, and respirations are 17/min. On physical exam, she has normal breast development and pubic hair is present. A pelvic exam is performed. A urine hCG test is negative. Which of the following is the best next step in management?
- A. Serum testosterone
- B. Serum T3 and T4
- C. Serum estradiol
- D. MRI of the head
- E. Pelvic ultrasound (Correct Answer)
Ovarian torsion management Explanation: ***Pelvic ultrasound***
- A pelvic ultrasound is the **best initial step** to visualize the anatomy of the reproductive organs and rule out structural abnormalities like **Müllerian agenesis** or an imperforate hymen, which could explain primary amenorrhea despite normal secondary sexual characteristics.
- Given the patient's **primary amenorrhea** (absence of menarche by age 15 with secondary sexual characteristics) and active sexual life, a pelvic ultrasound can also help identify potential abnormalities such as a **cryptomenorrhea** due to outflow tract obstruction.
*MRI of the head*
- While an MRI of the head might be considered later to evaluate for **hypothalamic or pituitary causes** (e.g., tumors like craniopharyngioma or prolactinoma) of primary amenorrhea, it is not the initial imaging step.
- The patient's headaches, though concerning for migraine, are likely **unrelated** to her primary amenorrhea at this stage without other neurological signs or significantly elevated prolactin levels.
*Serum estradiol*
- Measuring serum estradiol levels is important in evaluating primary amenorrhea to assess **gonadal function** and differentiate between hypogonadotropic and hypergonadotropic hypogonadism.
- However, direct visualization of the reproductive tract and ruling out **anatomical obstructions** is typically a more immediate and critical first step in a patient with normal secondary sexual development.
*Serum T3 and T4*
- Thyroid hormone levels (T3 and T4) are assessed to rule out **thyroid dysfunction** (hypothyroidism or hyperthyroidism) as a cause of menstrual irregularities or primary amenorrhea.
- While thyroid issues can affect menstruation, they are generally not the most common or immediate cause to investigate in a patient with **normal secondary sexual characteristics** and no other overt symptoms of thyroid disease.
*Serum testosterone*
- Serum testosterone levels are useful in evaluating for **hyperandrogenism**, which might be seen in conditions like **Polycystic Ovary Syndrome (PCOS)** or **androgen-secreting tumors**.
- However, in this patient with normal breast development and pubic hair but no menarche, the initial focus is on confirming the presence of a **uterus and ovaries** and ruling out anatomical obstructions, rather than immediately investigating androgen excess.
Ovarian torsion management US Medical PG Question 2: A 26-year-old woman presents to her gynecologist with complaints of pain with her menses and during intercourse. She also complains of chest pain that occurs whenever she has her menstrual period. The patient has a past medical history of bipolar disorder and borderline personality disorder. Her current medications include lithium and haloperidol. Review of systems is notable only for pain when she has a bowel movement relieved by defecation. Her temperature is 98.2°F (36.8°C), blood pressure is 114/74 mmHg, pulse is 70/min, respirations are 14/min, and oxygen saturation is 98% on room air. Pelvic exam is notable for a tender adnexal mass. The patient's uterus is soft, boggy, and tender. Which of the following is the most appropriate method of confirming the diagnosis in this patient?
- A. Endometrial biopsy
- B. MRI
- C. Transvaginal ultrasound
- D. Laparoscopy (Correct Answer)
- E. Clinical diagnosis
Ovarian torsion management Explanation: ***Laparoscopy***
- **Laparoscopy** with biopsy is considered the **gold standard** for diagnosing endometriosis, allowing direct visualization of endometrial implants and histopathological confirmation.
- The patient's symptoms (dysmenorrhea, dyspareunia, chest pain with menses, and rectal pain with defecation) are highly suggestive of **endometriosis**, and pelvic exam findings (tender adnexal mass, boggy uterus) further support this, making definitive visual and histological confirmation crucial.
*Endometrial biopsy*
- An **endometrial biopsy** samples the uterine lining and is primarily used to diagnose endometrial pathologies, such as hyperplasia or carcinoma, not ectopic endometrial tissue.
- It would not detect or confirm the presence of **endometrial implants** outside the uterus, which is characteristic of endometriosis.
*MRI*
- **MRI** can identify larger endometriomas and deep infiltrating endometriosis but is generally **less sensitive** than laparoscopy for detecting small or superficial endometrial implants.
- While useful for surgical planning, it is not the **definitive diagnostic method** for all forms of endometriosis.
*Transvaginal ultrasound*
- A **transvaginal ultrasound** is a good initial imaging modality, effective for identifying **endometriomas** (cysts) and sometimes adenomyosis, but it cannot definitively diagnose peritoneal endometriosis.
- It offers **limited specificity** for small or diffuse endometrial implants, and the absence of findings does not rule out the disease.
*Clinical diagnosis*
- While the patient's symptoms are highly suggestive, relying solely on a **clinical diagnosis** of endometriosis can be inaccurate, as other conditions can mimic these symptoms.
- A definitive diagnosis is often necessary for **appropriate treatment planning** and ruling out other pathologies, especially given the presence of an adnexal mass.
Ovarian torsion management US Medical PG Question 3: A 23-year-old man presents to the emergency department with testicular pain. His symptoms started 15 minutes ago and have not improved on the ride to the hospital. The patient’s past medical history is non-contributory, and he is not currently taking any medications. His temperature is 98.5°F (36.9°C), blood pressure is 123/62 mmHg, pulse is 124/min, respirations are 18/min, and oxygen saturation is 98% on room air. Physical exam is notable for a non-tender abdomen. The patient’s right testicle appears higher than his left and is held in a horizontal position. Stroking of the patient’s medial thigh elicits no response. Which of the following is the best treatment for this patient?
- A. Ceftriaxone
- B. Ciprofloxacin
- C. Manual detorsion
- D. Bilateral surgical procedure (Correct Answer)
- E. Surgical debridement
Ovarian torsion management Explanation: ***Bilateral surgical procedure***
- This patient presents with classic signs of **testicular torsion**, including acute, severe testicular pain, an elevated and horizontally positioned testicle, and absence of the **cremasteric reflex**.
- **Surgical exploration** is the definitive treatment for testicular torsion, involving detorsion of the affected testis and bilateral orchidopexy to prevent recurrence in the affected testis and torsion of the contralateral testis.
*Ceftriaxone*
- **Ceftriaxone** is an antibiotic used to treat bacterial infections, often combined with doxycycline for sexually transmitted infections like **epididymitis**.
- Testicular torsion is a **surgical emergency** caused by twisting of the spermatic cord, not an infection, so antibiotics are not indicated as a primary treatment.
*Ciprofloxacin*
- **Ciprofloxacin** is a fluoroquinolone antibiotic used for various bacterial infections, including some urinary tract infections and epididymitis.
- Testicular torsion requires immediate surgical intervention; antibiotics are ineffective as the pathology is **mechanical**, not infectious.
*Manual detorsion*
- **Manual detorsion** can be attempted as a temporary measure while preparing for surgery, but it is not definitive because it doesn't prevent recurrence.
- Even if successful, **surgical exploration** and **fixation (orchidopexy)** are still required to confirm viability and prevent future episodes.
*Surgical debridement*
- **Surgical debridement** involves removing necrotic tissue, which might be necessary if testicular ischemia progresses to **necrosis**.
- However, initially, the goal is to **restore blood flow** via detorsion and fixation; debridement would only be considered if the testis is non-viable after attempts to salvage the testis.
Ovarian torsion management US Medical PG Question 4: A 17-year-old girl comes to the emergency department with a 5-day history of severe abdominal pain, cramping, nausea, and vomiting. She also has pain with urination. She is sexually active with one male partner, and they use condoms inconsistently. She experienced a burning pain when she last had sexual intercourse 3 days ago. Menses occur at regular 28-day intervals and last 5 days. Her last menstrual period was 3 weeks ago. Her temperature is 38.5°C (101.3°F), pulse is 83/min, and blood pressure is 110/70 mm Hg. Physical examination shows abdominal tenderness in the lower quadrants. Pelvic examination shows cervical motion tenderness and purulent cervical discharge. Laboratory studies show a leukocyte count of 15,000/mm3 and an erythrocyte sedimentation rate of 100 mm/h. Which of the following is the most likely diagnosis?
- A. Ectopic pregnancy
- B. Ovarian cyst rupture
- C. Pyelonephritis
- D. Appendicitis
- E. Pelvic inflammatory disease (Correct Answer)
Ovarian torsion management Explanation: ***Pelvic inflammatory disease***
- The constellation of **lower abdominal pain, fever, cervical motion tenderness, purulent cervical discharge, leukocytosis, and elevated ESR** in a sexually active young woman strongly indicates PID.
- The history of **pain during intercourse and inconsistent condom use** increases the risk for sexually transmitted infections, which are common causes of PID.
*Ectopic pregnancy*
- While it can cause unilateral abdominal pain and tenderness, it's typically associated with **amenorrhea** and **vaginal spotting**, neither of which is present, and would not cause purulent discharge or fever this high.
- A **positive pregnancy test** would be expected, but none is mentioned, and her last menstrual period was 3 weeks ago, making pregnancy less likely as a cause of such severe symptoms.
*Ovarian cyst rupture*
- Characterized by **sudden-onset, sharp, unilateral abdominal pain** which may be accompanied by nausea and vomiting, but generally **lacks fever, purulent cervical discharge, cervical motion tenderness, or leukocytosis** as prominent features.
- The symptoms in the case, particularly the signs of infection, are inconsistent with a simple cyst rupture.
*Pyelonephritis*
- Typically presents with **flank pain, fever, dysuria, and CVA tenderness**, often with urinary symptoms like frequency or urgency.
- While dysuria is present, the **prominent cervical motion tenderness and purulent cervical discharge** make pyelonephritis less likely as the primary diagnosis, although a co-infection is possible.
*Appendicitis*
- Causes periumbilical pain that migrates to the **right lower quadrant**, often with anorexia, nausea, fever, and leukocytosis, but **lacks the genitourinary symptoms** such as dysuria, cervical motion tenderness, and purulent cervical discharge.
- The patient's pain is described as lower quadrant, which can be diffuse with PID.
Ovarian torsion management US Medical PG Question 5: A 62-year-old woman presents to her primary care physician for a routine physical exam. The patient has no specific complaints but does comment on some mild weight gain. She reports that she recently retired from her job as a math teacher and has taken up hiking. Despite the increase in activity, she believes her pants have become "tighter." She denies headaches, urinary symptoms, or joint pains. She has a history of hypertension, type 2 diabetes, and rheumatoid arthritis. Her medications include aspirin, lisinopril, rovastatin, metformin, and methotrexate. She takes her medications as prescribed and is up to date with her vaccinations. A colonoscopy two years ago and a routine mammography last year were both normal. The patient’s last menstrual period was 10 years ago. The patient has a father who died of colon cancer at 71 years of age and a mother who has breast cancer. Her temperature is 98.7°F (37°C), blood pressure is 132/86 mmHg, pulse is 86/min, respirations are 14/min and oxygen saturation is 98% on room air. Physical exam is notable for a mildly distended abdomen and a firm and non-mobile right adnexal mass. What is the next step in the management of this patient?
- A. Pelvic ultrasound (Correct Answer)
- B. Abdominal MRI
- C. PET-CT
- D. Exploratory laparotomy and debulking
- E. CA-125 level
Ovarian torsion management Explanation: ***Pelvic ultrasound***
- A **non-mobile right adnexal mass** in a postmenopausal woman, along with vague symptoms like **abdominal distension** and **weight gain**, raises suspicion for **ovarian cancer**.
- A **pelvic ultrasound** is the initial, non-invasive, and cost-effective imaging modality to characterize adnexal masses, assessing size, morphology, and vascularity.
*Abdominal MRI*
- While **MRI** offers excellent soft tissue contrast, it is typically used as a **secondary imaging modality** for further characterization of adnexal masses when ultrasound findings are inconclusive or for surgical planning, not as the initial step.
- Its higher cost and longer scan time make it less suitable for initial screening compared to ultrasound.
*PET-CT*
- **PET-CT** is primarily used for **staging malignancies** and detecting metastatic disease, or in cases of unknown primary, and is not the initial diagnostic test for an adnexal mass.
- It involves radiation exposure and is generally reserved for situations where malignancy is already highly suspected or confirmed.
*Exploratory laparotomy and debulking*
- **Exploratory laparotomy** and **debulking** are surgical procedures performed for the definitive diagnosis, staging, and treatment of ovarian cancer, but only *after* a thorough initial workup has been completed.
- It is an invasive procedure and should not be the first step in the investigation of an adnexal mass.
*CA-125 level*
- Measuring **CA-125** levels is useful as a **tumor marker** in the workup of suspected ovarian cancer, particularly in symptomatic postmenopausal women, and for monitoring treatment response.
- However, it has **low specificity** (can be elevated in benign conditions) and should be ordered in conjunction with imaging, not as the sole initial diagnostic step.
Ovarian torsion management US Medical PG Question 6: A 28-year-old male presents to his primary care physician with complaints of intermittent abdominal pain and alternating bouts of constipation and diarrhea. His medical chart is not significant for any past medical problems or prior surgeries. He is not prescribed any current medications. Which of the following questions would be the most useful next question in eliciting further history from this patient?
- A. "Does the diarrhea typically precede the constipation, or vice-versa?"
- B. "Is the diarrhea foul-smelling?"
- C. "Please rate your abdominal pain on a scale of 1-10, with 10 being the worst pain of your life"
- D. "Are the symptoms worse in the morning or at night?"
- E. "Can you tell me more about the symptoms you have been experiencing?" (Correct Answer)
Ovarian torsion management Explanation: ***Can you tell me more about the symptoms you have been experiencing?***
- This **open-ended question** encourages the patient to provide a **comprehensive narrative** of their symptoms, including details about onset, frequency, duration, alleviating/aggravating factors, and associated symptoms, which is crucial for diagnosis.
- In a patient presenting with vague, intermittent symptoms like alternating constipation and diarrhea, allowing them to elaborate freely can reveal important clues that might not be captured by more targeted questions.
*Does the diarrhea typically precede the constipation, or vice-versa?*
- While knowing the sequence of symptoms can be helpful in understanding the **pattern of bowel dysfunction**, it is a very specific question that might overlook other important aspects of the patient's experience.
- It prematurely narrows the focus without first obtaining a broad understanding of the patient's overall symptomatic picture.
*Is the diarrhea foul-smelling?*
- Foul-smelling diarrhea can indicate **malabsorption** or **bacterial overgrowth**, which are important to consider in some gastrointestinal conditions.
- However, this is a **specific symptom inquiry** that should follow a more general exploration of the patient's symptoms, as it may not be relevant if other crucial details are missed.
*Please rate your abdominal pain on a scale of 1-10, with 10 being the worst pain of your life*
- Quantifying pain intensity is useful for assessing the **severity of discomfort** and monitoring changes over time.
- However, for a patient with intermittent rather than acute, severe pain, understanding the **character, location, and triggers** of the pain is often more diagnostically valuable than just a numerical rating initially.
*Are the symptoms worse in the morning or at night?*
- Diurnal variation can be relevant in certain conditions, such as inflammatory bowel diseases where nocturnal symptoms might be more concerning, or functional disorders whose symptoms might be stress-related.
- This is another **specific question** that should come after gathering a more complete initial picture of the patient's symptoms to ensure no key information is overlooked.
Ovarian torsion management US Medical PG Question 7: A previously healthy 25-year-old woman is brought to the emergency department because of a 1-hour history of sudden severe lower abdominal pain. The pain started shortly after having sexual intercourse. The pain is worse with movement and urination. The patient had several urinary tract infections as a child. She is sexually active with her boyfriend and uses condoms inconsistently. She cannot remember when her last menstrual period was. She appears uncomfortable and pale. Her temperature is 37.5°C (99.5°F), pulse is 110/min, and blood pressure is 90/60 mm Hg. Abdominal examination shows a palpable, tender right adnexal mass. Her hemoglobin concentration is 10 g/dL and her hematocrit is 30%. A urine pregnancy test is negative. Pelvic ultrasound shows a 5 x 3-cm right ovarian sac-like structure with surrounding echogenic fluid around the structure and the uterus. Which of the following is the most appropriate management for this patient's condition?
- A. Intravenous methotrexate administration
- B. Uterine artery embolization
- C. Emergency exploratory laparotomy (Correct Answer)
- D. Oral doxycycline and metronidazole administration
- E. CT scan of the abdomen
Ovarian torsion management Explanation: ***Emergency exploratory laparotomy***
- The patient presents with **sudden severe lower abdominal pain**, **hypotension (90/60 mm Hg)**, **tachycardia (110/min)**, **palpable tender right adnexal mass**, and signs of **anemia (Hb 10 g/dL, Hct 30%)**, along with **free fluid** on ultrasound, indicating **hemorrhagic shock due to a ruptured ectopic pregnancy or ovarian cyst**. This is a surgical emergency.
- An **exploratory laparotomy** is immediately indicated to identify the source of bleeding, control hemorrhage, and remove the ruptured structure, especially given her unstable vital signs.
*Intravenous methotrexate administration*
- **Methotrexate** is used for **unruptured ectopic pregnancies** with specific criteria (e.g., small size, stable patient, declining hCG levels), but it is contraindicated in cases of rupture due to the risk of hemorrhage.
- The patient's **hypotension** and **anemia** indicate active bleeding and hemodynamic instability, making medical management inappropriate and delaying critical surgical intervention.
*Uterine artery embolization*
- **Uterine artery embolization** is primarily used for conditions like **uterine fibroids** or **postpartum hemorrhage**.
- It is not the appropriate first-line emergency treatment for acute rupture of an ectopic pregnancy or ovarian cyst with hypovolemic shock.
*Oral doxycycline and metronidazole administration*
- **Doxycycline** and **metronidazole** are antibiotics used to treat **pelvic inflammatory disease (PID)**, which presents with symptoms like fever, vaginal discharge, and lower abdominal pain, but typically not acute hemorrhagic shock.
- This patient's presentation is an acute surgical emergency with signs of hemorrhage, not an infection requiring only antibiotic therapy.
*CT scan of the abdomen*
- While a **CT scan** could provide more detailed imaging, the patient's **hemodynamic instability** (hypotension, tachycardia) requires immediate intervention.
- Delaying definitive treatment for further imaging in acute hemorrhagic shock is not appropriate and could worsen her condition.
Ovarian torsion management US Medical PG Question 8: A 67-year-old woman with endometrial cancer undergoes robotic-assisted staging surgery. Final pathology reveals grade 2 endometrioid adenocarcinoma with 60% myometrial invasion, positive pelvic lymph nodes (2/15), negative para-aortic nodes (0/8), and lymphovascular space invasion. No cervical or adnexal involvement. The tumor care team debates adjuvant treatment. Evaluate which combination of pathologic features most significantly impacts treatment recommendations?
- A. Grade 2 histology and depth of myometrial invasion
- B. Number of positive nodes and total nodes removed
- C. Lymphovascular space invasion and myometrial invasion depth
- D. Positive pelvic nodes and negative para-aortic nodes (Correct Answer)
- E. Absence of cervical involvement and patient age
Ovarian torsion management Explanation: ***Positive pelvic nodes and negative para-aortic nodes***
- The presence of positive pelvic lymph nodes classifies this as **FIGO Stage IIIC1** disease, which is the primary driver for recommending **systemic chemotherapy**.
- The negative para-aortic nodes help delineate the **radiation field**, focusing treatment on the pelvis rather than extended-field radiation, thus making this combination critical for the management plan.
*Grade 2 histology and depth of myometrial invasion*
- While these factors contribute to the **GOG-99** or **PORTEC** risk criteria for early-stage disease, they are superseded by the presence of **nodal metastasis** (Stage IIIC).
- Myometrial invasion (>50%) and Grade 2 are baseline risk factors, but they do not dictate the switch from local to **systemic therapy** once nodes are positive.
*Number of positive nodes and total nodes removed*
- The **lymph node count** (2/15) confirms the stage but does not change the treatment algorithm as much as the **anatomical location** (pelvic vs. para-aortic) of those nodes.
- While a low total node count might suggest staging inadequacy, Stage IIIC status is already established here, making the **distribution** more clinically significant for therapy planning.
*Lymphovascular space invasion and myometrial invasion depth*
- **Lymphovascular space invasion (LVSI)** is a strong prognostic indicator for recurrence, but it is often a precursor to the nodal involvement already identified in this patient.
- These features are used to justify **adjuvant therapy** in early-stage (Stage I) patients, but nodal status is a more powerful determinant in Stage III disease.
*Absence of cervical involvement and patient age*
- The lack of **cervical stromal invasion** means the patient is not Stage II, but this is less impactful than the upgrade to **Stage IIIC** due to positive nodes.
- **Patient age** is a clinical factor used in risk-stratification models like **GOG-99**, but it does not outweigh the pathological finding of **metastasized disease** in treatment selection.
Ovarian torsion management US Medical PG Question 9: A 29-year-old woman with stage IA1 cervical cancer (3 mm invasion, no LVSI) desires fertility preservation. She has one child and wants more children. Cone biopsy margins are positive. Imaging shows no lymph node involvement. Her oncologist recommends radical hysterectomy, while a fertility specialist suggests radical trachelectomy. The patient strongly desires future pregnancy. Evaluate the optimal management strategy balancing oncologic and reproductive outcomes.
- A. Repeat cone biopsy followed by close surveillance (Correct Answer)
- B. Radical hysterectomy given positive margins
- C. Simple trachelectomy with sentinel lymph node biopsy
- D. Radical trachelectomy with pelvic lymphadenectomy
- E. Neoadjuvant chemotherapy followed by conservative surgery
Ovarian torsion management Explanation: ***Repeat cone biopsy followed by close surveillance***
- In **Stage IA1** cervical cancer without **lymphovascular space invasion (LVSI)**, achieving **negative margins** via a repeat conization is standard to ensure all microscopic disease is removed while preserving the uterus.
- This approach is the most conservative and effective strategy for **fertility preservation**, as the risk of **lymph node metastasis** is less than 1% in this specific pathological subgroup.
*Radical hysterectomy given positive margins*
- This procedure provides definitive oncologic treatment but results in **permanent infertility**, which violates the patient's strong preference for **fertility preservation**.
- Radical surgery is considered **overtreatment** for Stage IA1 disease without LVSI, provided that negative margins can be achieved through additional local excision.
*Simple trachelectomy with sentinel lymph node biopsy*
- While a trachelectomy preserves fertility, a **simple trachelectomy** would still leave the positive margins from the initial cone biopsy untreated if not mapped correctly.
- **Sentinel lymph node biopsy** is generally not required for Stage IA1 disease lacking LVSI because the risk of nodal involvement is extremely low.
*Radical trachelectomy with pelvic lymphadenectomy*
- This is an extensive procedure typically reserved for **Stage IA2 to IB1** disease or Stage IA1 with **positive LVSI**, making it too aggressive for this patient's diagnosis.
- It carries higher risks of surgical morbidity and **obstetric complications**, such as preterm labor and cervical insufficiency, compared to a repeat cone biopsy.
*Neoadjuvant chemotherapy followed by conservative surgery*
- **Neoadjuvant chemotherapy (NACT)** is not an indicated or standard treatment for early-stage (IA1) cervical cancer with minimal stromal invasion.
- NACT is typically explored in research settings for **bulky Stage IB** tumors to shrink them prior to performing **fertility-sparing surgery**, which does not apply here.
Ovarian torsion management US Medical PG Question 10: A 42-year-old woman with BMI 42 kg/m² and abnormal uterine bleeding undergoes robotic-assisted total laparoscopic hysterectomy. Intraoperatively, she requires steep Trendelenburg positioning for 180 minutes. Postoperatively, she develops dyspnea, hypoxemia, and facial edema. Chest X-ray shows pulmonary edema. Evaluation of her postoperative course requires synthesis of which pathophysiologic mechanisms?
- A. Prolonged Trendelenburg causing increased intrathoracic pressure and facial venous congestion
- B. Combination of increased preload from positioning, obesity-related cardiac strain, and capillary leak (Correct Answer)
- C. Obesity hypoventilation syndrome exacerbated by anesthesia residual effects
- D. CO2 absorption from pneumoperitoneum causing hypercarbia and pulmonary vasoconstriction
- E. Undiagnosed obstructive sleep apnea causing negative pressure pulmonary edema
Ovarian torsion management Explanation: ***Combination of increased preload from positioning, obesity-related cardiac strain, and capillary leak***
- Steep **Trendelenburg positioning** causes a significant shift of blood volume toward the heart, leading to increased **central venous pressure** and cardiac **preload**, which can overwhelm the left ventricle.
- In patients with a high **BMI**, the heart already handles increased workload; the addition of prolonged surgery and **fluid resuscitation** promotes **capillary leak** and hydrostatic fluid movement into the pulmonary alveoli.
*Prolonged Trendelenburg causing increased intrathoracic pressure and facial venous congestion*
- While this positioning does cause **venous congestion** and increases **intrathoracic pressure**, it does not fully explain the development of **pulmonary edema** on chest X-ray.
- This mechanism explains the **facial edema** and potential airway swelling but fails to address the underlying **cardiac and systemic fluid shifts** described.
*Obesity hypoventilation syndrome exacerbated by anesthesia residual effects*
- **Obesity hypoventilation syndrome** leads to hypercapnia and chronic hypoxemia, but it typically presents with **respiratory acidosis** rather than acute pulmonary edema.
- While anesthesia can suppress respiratory drive, it would not primarily cause the **interstitial fluid accumulation** seen in this patient's imaging.
*CO2 absorption from pneumoperitoneum causing hypercarbia and pulmonary vasoconstriction*
- **Pneumoperitoneum** does lead to **CO2 absorption** and systemic absorption, but modern anesthesia management typically compensates for this through ventilation adjustments.
- While **pulmonary vasoconstriction** can occur, it is a transient physiological change and is rarely the solitary cause of post-operative **pulmonary edema** in this clinical context.
*Undiagnosed obstructive sleep apnea causing negative pressure pulmonary edema*
- **Negative pressure pulmonary edema** occurs due to strong inspiratory effort against an **obstructed airway** (laryngospasm), typically during extubation.
- This patient's symptoms developed over a **180-minute procedure** and involve facial edema, suggesting fluid overload and positioning rather than an acute **post-extubation crisis**.
More Ovarian torsion management US Medical PG questions available in the OnCourse app. Practice MCQs, flashcards, and get detailed explanations.
