Final answer:
Clients with cardiovascular disease are advised against straining during bowel movements to prevent decreased venous return to the heart, which can exacerbate cardiovascular conditions and increase the risk of heart attacks.The correct answer is option C.
Step-by-step explanation:
The reason clients with cardiovascular disease should be cautioned against straining while having a bowel movement is to help avoid c. decreased venous return to the heart. Straining increases intra-abdominal pressure, which can then impede the return of blood to the heart.
This can lead to an increase in cardiac workload and can potentially worsen conditions related to cardiovascular disease such as hypertension, arteriosclerosis, and varicose veins. These conditions are already contributing to impaired blood flow, and further strain can exacerbate symptoms and increase health risks, including heart attacks.The correct answer is option C.