Pneumonia

Question 1

What anatomical part of the lung does pneumonia primarily involve?

Answer 1

The parenchyma of the lung.

Question 2

What characteristic physical finding is caused by the lung becoming a solid organ in pneumonia?

Answer 2

Dullness on percussion.

Question 3

Why do Atypical Pneumonias not typically have consolidation or a productive cough?

Answer 3

The exudate is in the interstitial space, not inside the alveoli.

Question 4

What is the primary cellular inflammatory response in Typical pneumonia?

Answer 4

Neutrophils (Polymorphonuclear cells).

Question 5

What is the primary cellular inflammatory response in Atypical pneumonia?

Answer 5

Macrophages (Mononuclear cells).

Question 6

The histological subtype of pneumonia with patchy infiltrates is called what?

Answer 6

Bronchopneumonia.

Question 7

The histological subtype of pneumonia with entire lobe consolidation is called what?

Answer 7

Lobar Pneumonia.

Question 8

Lobar pneumonia complications include lung abscess, sepsis, and what collection of pus in the pleura?

Answer 8

Empyema.

Question 9

What is the technical definition of myalgia?

Answer 9

Muscle ache (Myo = muscle, algia = pain).

Question 10

What is the most common Gram-stain type for Hospital-Acquired Pneumonia (HAP) organisms?

Answer 10

Mostly Gram-negative bacteria.

Question 11

Which Gram-negative organism is a high risk for a patient with HAP who has an indwelling urinary catheter?

Answer 11

E. coli.

Question 12

Which organism, other than MRSA, is a risk for HAP if the patient has an IV catheter?

Answer 12

Staphylococcus epidermidis.

Question 13

What shape are Streptococcus pneumoniae (Pneumococcus) described as under the microscope?

Answer 13

Lancet-shaped Gram-positive diplococci.

Question 14

HAP and VAP are considered subtypes of which broader modern classification?

Answer 14

Healthcare-Associated Pneumonia (HCAP).

Question 15

Atypical Pneumonias are caused by which three main bacterial/fungal groups mentioned in the video?

Answer 15

Mycoplasma, Chlamydia, Legionella, and Fungi (Histoplasmosis).

Question 16

Name two viruses mentioned as causes of Atypical Pneumonia.

Answer 16

Influenza, Adenovirus (think conjunctivitis), or RSV.

Question 17

What is the key difference in the onset of symptoms between Typical and Atypical Pneumonia?

Answer 17

Typical is sudden/rapid; Atypical is insidious/slow.

Question 18

What is the key difference in fever grade between Typical and Atypical Pneumonia?

Answer 18

Typical is high-grade; Atypical is low-grade.

Question 19

Give an example of a setting that qualifies a non-hospitalized patient for HCAP.

Answer 19

Nursing home or extensive contact with a healthcare setting.

Question 20

What type of transmission involves a septic embolus traveling from the bloodstream to the lung?

Answer 20

Hematogenous (or bloodstream) infection.

Question 21

The old classification of interstitial pneumonia is now considered a form of what lung disease?

Answer 21

Restrictive lung disease (specifically AIP/CIP, which is interstitial fibrosis).

Question 22

Pneumonia in immunocompromised patients is often due to opportunistic infections. Name one fungus or virus mentioned.

Answer 22

CMV (Cytomegalovirus) pneumonia or Aspergillus fumigatus.

Question 23

Why should antibiotics be withheld in a pure viral pneumonia?

Answer 23

They are anti-bacterial, not anti-viral, and their use promotes resistance.

Question 24

What is the typical Gram-stain type for Community-Acquired Pneumonia (CAP) organisms?

Answer 24

Mostly Gram-positive bacteria (Strep pneumo).

Question 25

What is the most common bacterial superinfection following Influenza viral pneumonia?

Answer 25

**Staph aureus**.

Question 26

In addition to a productive cough and high fever, what other sign is characteristic of **Typical** Pneumonia?

Answer 26

Pleuritic chest pain (also flu-like symptoms are present).

Question 27

In addition to a low-grade fever and dry cough, what other symptom is characteristic of **Atypical** Pneumonia?

Answer 27

Flu-like symptoms and pleuritic chest pain.

Question 28

What term is used for complications of pneumonia, such as a pleural effusion, that is associated with the infection?

Answer 28

**Para-pneumonic** (e.g., para-pneumonic effusion).

Question 29

Which type of breath sounds is heard over consolidated lung tissue?

Answer 29

**Bronchial or Tubular breath sounds**.

Question 30

Crackles described as being like the Egyptian 'hookah' (air and fluid bubbles) are called what?

Answer 30

**Wet crackles**.

Question 31

Wet crackles are caused by air and fluid in the alveoli. Name two specific causes.

Answer 31

Pneumonia (exudate) or Pulmonary Edema (Heart Failure fluid).

Question 32

Crackles described as 'velcro crackles' are called what?

Answer 32

**Dry crackles**.

Question 33

Dry crackles are caused by what structural change in the lung?

Answer 33

**Interstitial pulmonary fibrosis** (thick fibers).

Question 34

What is the importance of a finding of a high number of **neutrophils** in the **pulmonary vessels** (instead of alveoli)?

Answer 34

Suggests **Sepsis**.

Question 35

What two non-specific lab markers are typically elevated in pneumonia due to inflammation?

Answer 35

**ESR** and **CRP**.

Question 36

What is the key X-ray finding in **interstitial pneumonia**?

Answer 36

**Interstitial infiltrates** (a 'streaky' appearance).

Question 37

What kind of leukocytosis is characteristic of a bacterial pneumonia?

Answer 37

**Neutrophilic leukocytosis**.

Question 38

The finding of increased tactile vocal fremitus is consistent with what underlying pathology?

Answer 38

**Consolidation** (solid tissue transmits vibrations better).

Question 39

When should antibiotic therapy be narrowed from empiric to specific treatment?

Answer 39

When the cultures (Gram stain and culture) finally confirm the organism.

Question 40

List three drug classes used to treat Strep pneumo (Gram-positive) pneumonia.

Answer 40

**Penicillins**, **Cephalosporins**, **Macrolides**, **Tetracyclines**, or **Respiratory Fluoroquinolones**.

Question 41

What is the specific **macrolide** mentioned for outpatient CAP treatment in otherwise healthy patients?

Answer 41

**Azithromycin**.

Question 42

What is the specific **tetracycline** mentioned for outpatient CAP treatment in otherwise healthy patients?

Answer 42

**Doxycycline**.

Question 43

List three **modifying factors** that mandate the use of Respiratory Fluoroquinolones for outpatient CAP.

Answer 43

**Elderly**, **alcoholic**, **immunocompromised**, **COPD**, **diabetes**, or **recent beta-lactam use**.

Question 44

What is the single antibiotic class recommended for **Inpatient, Non-ICU** CAP empiric treatment?

Answer 44

**Respiratory Fluoroquinolone**.

Question 45

If a patient with a known risk for **MRSA** has pneumonia and is resistant to **Vancomycin**, what is the alternative drug mentioned?

Answer 45

**Linezolid** (Vancomycin-Resistant Staph Aureus, VRSA).

Question 46

What is a main difference between Lobar Pneumonia and Bronchopneumonia in terms of **consolidation extent**?

Answer 46

Lobar involves the **entire lobe**; Bronchopneumonia involves **patchy areas**.

Question 47

A 50-year-old construction worker with fever, chills, and productive cough is diagnosed with *S. pneumoniae* pneumonia. Histological examination of the lung would most likely reveal which of the following cellular exudates?

Answer 47

Neutrophilic alveolitis

Question 48

A 20-year-old presents with a several-day history of increasing fatigue, myalgia, and a persistent hacking cough with no sputum. This presentation aligns best with which classic pneumonia profile?

Answer 48

Slow onset, dry cough

Question 49

A clinician is trying to differentiate between typical bacterial pneumonia and interstitial pulmonary fibrosis. Which physical exam finding would be characteristic of **interstitial pulmonary fibrosis** and **absent** in simple consolidation?

Answer 49

Dry (Velcro) crackles

Question 50

A 75-year-old male is in the hospital for 10 days post-stroke and develops HAP. He has had an indwelling urinary catheter for the duration. Which organism is the most likely pathogen?

Answer 50

E. coli

Question 51

A 65-year-old diabetic patient is diagnosed with outpatient CAP. Which antibiotic is the MOST appropriate choice for empiric monotherapy in the presence of this modifying factor?

Answer 51

Levofloxacin

Question 52

Auscultation over an area of lobar consolidation would MOST likely reveal which breath sound pattern?

Answer 52

Bronchial breath sounds, long expiration

Question 53

A major complication of complicated pneumonia (with abscess/empyema) involves a septic embolus traveling through the blood, often resulting in which finding in the central nervous system?

Answer 53

Brain abscess

Question 54

A Complete Blood Count (CBC) in a patient with acute bacterial pneumonia is most likely to show which characteristic type of leukocytosis?

Answer 54

Neutrophilic

Question 55

The mechanism of **wet crackles** (like a bubbling hookah) is best described by which pathophysiological event?

Answer 55

Air and fluid in the alveoli

Question 56

If a patient with a known risk for MRSA is found to have Vancomycin-Resistant S. Aureus (VRSA), which alternative antibiotic is recommended for coverage?

Answer 56

Linezolid

Question 57

The mechanism of pneumonia transmission involving the patient inhaling materials from the back of the throat while asleep is known as:

Answer 57

Aspiration of oropharyngeal content

Question 58

Physical exam findings like increased tactile vocal fremitus and whispering pectoriloquy are based on the principle that:

Answer 58

Solid is a better sound medium

Question 59

What is the recommended empiric monotherapy for an Inpatient, Non-ICU CAP patient?

Answer 59

Respiratory Fluoroquinolone only

Question 60

Cryptogenic Organizing Pneumonia (COP) and Acute Interstitial Pneumonia (AIP) are now categorized outside of infectious pneumonia and belong to which disease category?

Answer 60

Restrictive lung disease

Question 61

A patient with HAP has a chronic IV catheter. Which organism, associated with indwelling devices, should be covered?

Answer 61

Staph epidermidis

Question 62

A patient presents with high-grade fever, productive cough, and a high neutrophil count. Which organism, representing the 'typical' category, is the most likely cause?

Answer 62

Streptococcus pneumoniae

Question 63

Which location of neutrophils is most characteristic of a severe, systemic infection like sepsis, rather than a localized lung infection?

Answer 63

In the pulmonary vessels (sepsis)

Question 64

Regarding the treatment of a patient with confirmed Influenza-caused viral pneumonia, what is the appropriate stance on the use of antibiotics?

Answer 64

Antibiotics should only be started if a bacterial superinfection develops.

Question 65

What is the key radiographic distinction between Lobar Pneumonia and Bronchopneumonia?

Answer 65

Lobar: entire lobe consolidation; Bronchopneumonia: patchy infiltrates

Question 66

The organism most associated with patients on a ventilator, requiring specific anti-pseudomonal coverage, is:

Answer 66

Pseudomonas

Question 67

Percussion over a lung segment with severe lobar consolidation would yield which sound?

Answer 67

Dull

Question 68

The symptoms defined in the video as 'flu-like symptoms' are:

Answer 68

Headache, Myalgia, Pharyngitis

Question 69

What is the recommended empiric antibiotic combination for a patient with severe CAP admitted to the ICU?

Answer 69

Fluoroquinolone + Beta-Lactam