A 58-year-old client has had poorly controlled hypertension for many years despite repeated counseling. Echocardiography demonstrates thickening of the left ventricular wall. Which long-term complication is most likely if hypertension continues untreated?

A nursing instructor explains that only lymphocytes capable of recognizing a specific antigen become activated after exposure. These activated cells divide repeatedly to produce identical cells with the same specificity. Which process is being described?

A nursing instructor asks students to define an antigen. One student correctly states that antigens stimulate adaptive immune responses. Which additional statement is accurate?

A client develops severe dehydration, causing the hematocrit to increase significantly. The nurse anticipates that blood flow through small vessels may decrease. Which factor contributes most directly to this change?

A trauma patient experiences massive blood loss following a motor vehicle collision. Blood pressure continues to fall despite activation of normal compensatory mechanisms. The healthcare team immediately begins a blood transfusion and intravenous fluids. Which type of shock is the client experiencing?

A client has a bacterial skin infection of the lower leg. During assessment, the nurse notes enlarged inguinal lymph nodes. Why have these lymph nodes become enlarged?

A 61-year-old client presents with unilateral calf swelling, warmth, redness, and tenderness after returning from an overseas flight. Doppler ultrasound confirms a deep vein thrombosis. The nurse understands that the greatest immediate complication is the development of which condition?

A client successfully recovers from a bacterial infection. As the infection resolves, immune activity gradually decreases to prevent unnecessary tissue damage. Which T lymphocytes help suppress excessive immune responses?

A mother plans to breastfeed her newborn and asks how breast milk protects infants from infection. The nurse explains that breast milk contains antibodies that protect mucosal surfaces. Which immunoglobulin is primarily responsible?

A child is diagnosed with recurrent tonsillitis. The parents ask why tonsils are important. Which response by the nurse is most accurate?