Which of the following is a significant risk factor for the development of liver cirrhosis?

Management of acute angina with sublingual Nitroglycerin requires prompt action to restore myocardial oxygen balance and prevent progression to myocardial infarction. Nitroglycerin works by causing vasodilation, which decreases cardiac workload and improves coronary blood flow. Standard teaching includes stopping activity, resting, and taking one tablet at the onset of chest pain. If pain persists after the first dose, emergency intervention and additional doses must follow a specific safe sequence.

Rationale:
A. Continuing normal activity is inappropriate because physical exertion increases myocardial oxygen demand and can worsen ischemia. The client should immediately stop activity and rest in a sitting or lying position to reduce cardiac workload. Rest enhances the effect of nitroglycerin and helps prevent worsening chest pain or progression to infarction.

B. Calling for emergency medical assistance before taking the second tablet is correct because persistent chest pain after the first dose may indicate unstable angina or myocardial infarction. Emergency services should be contacted after 5 minutes if pain is not relieved. Prompt medical evaluation is critical since delayed treatment increases the risk of permanent myocardial damage.

C. Taking two more tablets at the same time is unsafe and not recommended. Nitroglycerin should be administered one tablet every 5 minutes, up to a maximum of three doses. Taking multiple tablets simultaneously increases the risk of severe hypotension, dizziness, and syncope without improving safety or effectiveness.

D. Stopping all medications is incorrect and potentially dangerous. The client should continue prescribed cardiovascular medications unless specifically instructed otherwise by the provider. Abrupt discontinuation of drugs such as beta blockers, antiplatelets, or antihypertensives can worsen cardiac instability and increase the risk of complications.

E. Taking a third sublingual tablet after another 5 minutes is correct if chest pain persists after the second dose. The standard protocol allows one tablet every 5 minutes for a total of three doses while awaiting emergency help. Continued pain after the third dose strongly suggests a serious cardiac event requiring immediate advanced treatment.

Hepatic encephalopathy is a neurologic complication of liver dysfunction caused by the accumulation of toxic substances, especially ammonia, in the bloodstream. When the liver is unable to effectively convert ammonia into urea for excretion, ammonia crosses the blood-brain barrier and affects brain function. This can lead to confusion, altered consciousness, and even coma. Lactulose is commonly administered to reduce serum ammonia levels and improve neurologic status.

Rationale:
A. Decreasing blood pressure is not the primary purpose of lactulose in hepatic encephalopathy. Lactulose acts mainly within the gastrointestinal tract and does not function as an antihypertensive medication. Although fluid shifts may occur with excessive diarrhea, blood pressure reduction is not its therapeutic target in this condition.

B. Improving liver function tests is not the direct action of lactulose. The medication does not repair hepatocytes or restore liver enzyme levels such as AST, ALT, or bilirubin. Its benefit is focused on reducing neurotoxic ammonia accumulation rather than reversing the underlying hepatic damage shown in laboratory values.

C. Enhancing the excretion of ammonia from the body is the primary goal of lactulose therapy. Lactulose acidifies the colon, converting ammonia (NH3) into ammonium (NH4+), which cannot be reabsorbed and is excreted in stool. Its laxative effect also decreases intestinal transit time, reducing ammonia production and absorption from the gut.

D. Increasing sodium levels in the body is not the intended use of lactulose. It does not act as an electrolyte replacement therapy and may actually contribute to electrolyte imbalance if excessive diarrhea occurs. Sodium management in liver disease is addressed separately, especially in clients with ascites or fluid retention.