A patient has a temperature of 102.2°F. The nurse needs to document the temperature in Celsius for the electronic medical record. (LABEL CORRECTLY. ROUND TO TENTH)

A. "It could be a heart attack, and when the heart is damaged it causes respiratory damage, too.” This misrepresents the pathophysiology of cor pulmonale. Cor pulmonale results from lung disease impacting heart function, not vice versa.

B. "It isn't a heart attack, but your heart has gradually weakened over the years, causing respiratory disease."In cor pulmonale, chronic respiratory disease leads to right-sided heart failure not the other way around.

C. "It is probably a heart attack, since cor pulmonale means that the heart isn't getting enough blood and becomes too weak to pump effectively."Cor pulmonale, is not about coronary blood flow but rather the increased pulmonary pressure due to chronic lung disease that strains the right side of the heart.

D. "You aren't having a heart attack, but your heart has been damaged by changes in your lungs caused by your respiratory disease."Cor pulmonale is right-sided heart failure caused by chronic lung disease such as COPD. Increased resistance in the pulmonary circulation puts strain on the right ventricle, leading to its dysfunction.

A. A venturi mask: The Venturi mask is often used in patients with COPD. However, it may cause dryness and irritation in the nasal passages and sinuses due to non-humidified, high-flow delivery, which could aggravate existing sinus conditions.

B. A nasal cannula: While nasal cannulas are less drying than masks and suitable for low-flow oxygen delivery, they can still cause mucosal dryness when used without humidification, particularly in patients with sinus issues.

C. High-flow oxygen via nasal cannula: High-flow nasal cannula therapy provides warmed, humidified oxygen, but at higher rates than needed for most patients starting oxygen therapy. It is more appropriate for acute respiratory failure than for routine use in sinus conditions.

D. Adding humidification to the oxygen setup: Humidifying oxygen helps prevent nasal and sinus mucosal dryness and irritation, making it beneficial for patients with sinus disorders. Moisture improves comfort and protects the integrity of the upper airway mucosa during oxygen therapy.