CHEST X-RAY / ELECTROCARDIOGRAM

A 45-year-old man presents with fever, productive cough, and shortness of breath for 4 days. His vital signs are: T 38.9°C, HR 102 bpm, RR 24 breaths/min, BP 118/76 mmHg, and SpO₂ 91% on room air. On exam, crackles are heard in the left lower lung field. A chest X-ray is obtained.

Question: What pulmonary pattern is most likely seen on his chest X-ray?

• Interstitial Pattern

• Consolidation Pattern

• Nodular Pattern

• Actelectasic Pattern

What does the T wave represent in an electrocardiogram (ECG)?

• Atrial Depolarization

• Ventricular Depolarization

• Ventricular Repolarization

• Atrial Repolarization

A 27-year-old man presents to the emergency department after being stabbed in the right side of his chest. He complains of severe chest pain and shortness of breath. His vital signs are: T 37.2°C, HR 120 bpm, RR 30 breaths/min, BP 90/60 mmHg, and SpO₂ 86% on room air. On examination, there is decreased breath sounds and hyperresonance to percussion on the right side. A chest X-ray is performed.

Question: What pulmonary pattern is most likely seen on his chest X-ray?

• Pleural Effusion

• Atelectasis

• Pneumothorax

• Consolidation

Calculate the heart rate from this electrocardiogram.

• 150 bpm

• 80 bpm

• 100 bpm

• 50 bpm

A 62-year-old man with a history of chronic kidney disease presents with increasing shortness of breath and swelling in his legs over the past week. His vital signs are: T 36.8°C, HR 96 bpm, RR 22 breaths/min, BP 150/90 mmHg, and SpO₂ 93% on room air. On physical examination, there are decreased breath sounds and dullness to percussion at both lung bases. A chest X-ray is ordered.

Question: What pulmonary pattern is most likely seen on his chest X-ray?

• Pneumothorax

• Pleural Effusion

• Consolidation

• Atelectasis

How is the cardiac axis in the following electrocardiogram?

• Normal

• Left Axis

• Right Axis

• Extreme Right Axis

A 59-year-old man presents with a 3-month history of persistent cough, unintentional weight loss, and occasional streaks of blood in his sputum. He denies fever or recent infections. His vital signs are: T 37.0°C, HR 88 bpm, RR 18 breaths/min, BP 128/82 mmHg, and SpO₂ 95% on room air. On auscultation, breath sounds are decreased over the right upper lung field. A chest X-ray is obtained to investigate the cause of his symptoms.

Question: What pulmonary pattern is most likely seen on his chest X-ray?

• Consolidation

• Pulmonary Mass

• Interstitial Pattern

• Pleural Effusion

If the PR interval on an electrocardiogram is prolonged beyond 0.20 seconds without any other abnormalities, what is this condition called?

• A-V Block

  Grade I

• A-V Block

  Grade II
  (Mobitz I)

• A-V Block

  Grade II
  (Mobitz II)

• A-V Block

  Grade III

A 54-year-old man with a long history of smoking presents with sudden onset of shortness of breath and mild chest discomfort. He denies fever or sputum production. His vital signs are: T 36.9°C, HR 94 bpm, RR 20 breaths/min, BP 126/80 mmHg, and SpO₂ 92% on room air. On physical examination, breath sounds are markedly decreased over the right lung, and there is dullness to percussion. A chest X-ray is ordered to evaluate the cause.

Question: What pulmonary pattern is most likely seen on his chest X-ray?

• Pleural Effusion

• Pneumothorax

• Atelectasis

• Consolidation

In an electrocardiogram, how many millivolts does one large square represent?

• 0.1 mV

• 0.5 mV

• 1.0 mV

• 2.0 mV