A nurse is providing teaching to a client who has angina and is prescribed nitroglycerin sublingual tablets. Which of the following statements by the client indicates an understanding of the teaching?

Choice A reason: Inhaling through the incentive spirometer 10 times per use is a general guideline, but the emphasis is on slow, deep inhalations, not a specific number of repetitions. The goal is to expand alveoli and prevent atelectasis, but the exact number varies by protocol. Holding the breath is more critical than the number of inhalations.

Choice B reason: Sitting at a 30-degree angle is incorrect, as clients should be upright (60-90 degrees) during incentive spirometry to maximize lung expansion. A semi-upright or supine position limits diaphragmatic movement and lung capacity, reducing the device’s effectiveness in improving ventilation and preventing postoperative pulmonary complications.

Choice C reason: Holding the breath for 5-7 seconds after inhaling through the incentive spirometer sustains alveolar expansion, promoting gas exchange and preventing atelectasis. This technique maximizes lung volume and strengthens respiratory muscles, critical for postoperative or immobile clients, making it a key instruction for effective spirometer use.

Choice D reason: Using the incentive spirometer once every 4 hours is insufficient. Standard protocols recommend use every 1-2 hours while awake, typically 10 breaths per session, to maintain lung expansion and prevent complications like pneumonia. Less frequent use reduces efficacy, making this an incorrect instruction for optimal respiratory health.

Choice A reason: Family history is a non-modifiable risk factor, as inherited genetic predispositions (e.g., BRCA mutations for breast cancer) cannot be altered. These genes influence cellular processes like DNA repair, increasing disease risk. While lifestyle mitigates some effects, family history remains a fixed contributor to disease susceptibility.

Choice B reason: Age is a non-modifiable risk factor, as chronological aging increases cellular damage, oxidative stress, and telomere shortening, elevating risks for diseases like cancer or cardiovascular conditions. Cumulative exposure to environmental factors exacerbates this, but age itself cannot be changed, making it a fixed risk factor.

Choice C reason: Genetics are non-modifiable, as inherited DNA sequences determine disease predisposition (e.g., APOE gene for Alzheimer’s). Genetic mutations affect cellular pathways, like lipid metabolism or tumor suppression, increasing disease risk. While epigenetic modifications occur, core genetic makeup is unchangeable, making it a fixed risk factor.

Choice D reason: Sunbathing is modifiable, as reducing UV exposure prevents skin damage and DNA mutations in melanocytes, lowering skin cancer risk. UV radiation causes pyrimidine dimer formation, impairing DNA repair and promoting carcinogenesis. Protective measures like sunscreen or limited exposure directly reduce this risk, making it modifiable.