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A patient presents with chest pain, dyspnea, and syncope. An electrocardiogram (ECG) shows a wide QRS complex with absence of P waves. Which cardiovascular disorder is most likely responsible for these symptoms?
- A. Stable angina
- B. Atrial fibrillation
- C. Ventricular tachycardia
- D. Supraventricular tachycardia
Correct Answer: C
Rationale: Ventricular tachycardia (VT) is a potentially life-threatening arrhythmia characterized by wide QRS complexes and absence of P waves on electrocardiogram (ECG). Patients with VT may present with symptoms such as chest pain, dyspnea, and syncope due to reduced cardiac output and ineffective pumping of the heart. VT is a serious condition that requires prompt treatment to prevent hemodynamic compromise and potential cardiac arrest. Stable angina typically presents with chest pain that is provoked by exertion and relieved by rest or nitroglycerin. Atrial fibrillation is characterized by an irregularly irregular rhythm with absent P waves on ECG. Supraventricular tachycardia typically presents with a narrow QRS complex on ECG.
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Which BEST describes the planning function of Nurse Ellen in her role as nurse manager?
- A. Get and develop people to do work
- B. Distributes and arranges work to ensure smooth operation of the unit.
- C. Determines the actual performance compared with the desired output.
- D. Determine how to achieve the mandate of work.
Correct Answer: D
Rationale: The planning function of Nurse Ellen in her role as a nurse manager best corresponds to option D, which is to determine how to achieve the mandate of work. Planning involves setting objectives, developing strategies, and outlining the steps to accomplish those objectives. As a nurse manager, Nurse Ellen would be responsible for creating plans to ensure the effective delivery of patient care, efficient allocation of resources, and meeting the organizational goals of the unit. By determining how to achieve the work mandate, Nurse Ellen can effectively lead her team, allocate resources efficiently, and navigate any challenges that may arise in the operation of the nursing unit.
Nurse Victor assesses patient Mil. Decrease of which the following factors would help detect that the patient is at risk at developing cardiogenic shock?
- A. Heart rate
- B. Cardiac index
- C. Cerebral blood flow
- D. Blood pressure
Correct Answer: B
Rationale: Cardiogenic shock is a life-threatening condition where the heart is unable to pump enough blood to meet the body's demands. Monitoring the patient's cardiac index, which is a measure of cardiac output adjusted for body surface area, can help detect the risk of developing cardiogenic shock. A decrease in cardiac index would indicate a decrease in the heart's ability to effectively pump blood, putting the patient at risk for cardiogenic shock. Monitoring cardiac index is essential in assessing cardiac function and guiding interventions to prevent the progression to cardiogenic shock. The other factors listed may provide important information in assessing the patient's condition, but specifically in detecting the risk of developing cardiogenic shock, monitoring the cardiac index is crucial.
A patient with chronic obstructive pulmonary disease (COPD) presents with acute exacerbation and severe dyspnea. Arterial blood gas (ABG) analysis reveals pH 7.28, PaO2 55 mmHg, PaCO2 65 mmHg, and HCO3- 30 mEq/L. Which of the following acid-base disturbances is most likely present in this patient?
- A. Respiratory acidosis with metabolic compensation
- B. Respiratory alkalosis with metabolic compensation
- C. Metabolic acidosis with respiratory compensation
- D. Metabolic alkalosis with respiratory compensation
Correct Answer: A
Rationale: In this case, the patient is experiencing respiratory acidosis as indicated by the low pH (7.28), elevated PaCO2 (65 mmHg), and elevated HCO3- (30 mEq/L). The primary acid-base disturbance is respiratory acidosis due to the retention of carbon dioxide (PaCO2 >45 mmHg) leading to an increase in HCO3- as a compensatory mechanism to maintain pH within normal limits. The elevated HCO3- levels (metabolic compensation) are trying to counterbalance the increased PaCO2 levels (respiratory acidosis) by increasing bicarbonate to attempt to normalize the pH. Overall, the ABG analysis shows respiratory acidosis with metabolic compensation in this COPD patient with an acute exacerbation and severe dyspnea.
Which of the following laboratory findings is characteristic of nephrotic syndrome?
- A. Hematuria
- B. Hypoalbuminemia
- C. Hyperkalemia
- D. Hypocalcemia
Correct Answer: B
Rationale: Nephrotic syndrome is a kidney disorder characterized by increased glomerular permeability, leading to protein loss in the urine. One of the hallmarks of nephrotic syndrome is hypoalbuminemia, which refers to low levels of albumin in the blood due to its excessive loss in the urine. This loss of albumin results in decreased oncotic pressure, leading to edema and ascites. Hematuria (choice A) is not typically found in nephrotic syndrome but may be present in other kidney conditions. Hyperkalemia (choice C) is not specific to nephrotic syndrome and may be more common in conditions affecting potassium regulation. Hypocalcemia (choice D) is also not a characteristic feature of nephrotic syndrome.
For the students better understanding about the anatomy of the breast, the CI shares ________.
- A. various pictures of the breast, external and internal Views
- B. pictures of different types of mastectomies
- C. the experiences of breastfeeding mothers
- D. artistic drawings of the breasts
Correct Answer: A
Rationale: To help the students better understand the anatomy of the breast, it is crucial to provide visual aids that display both external and internal views of the breast. By sharing various pictures of the breast, students can visually learn about the structure, shape, location of different components, such as lobes, ducts, glands, and lymph nodes. Visual aids enhance the learning experience by providing a clear representation of the complex anatomical features of the breast, aiding in retention and comprehension. This approach can effectively supplement theoretical knowledge with practical visual references, facilitating a comprehensive understanding of breast anatomy.