Final answer:
The diagnosis for a 14-year-old girl with prolonged bleeding after dental surgery and menses, normal PT, normal or increased PTT, and increased bleeding time is Von Willebrand disease, a genetic disorder that affects the blood's ability to clot.
Step-by-step explanation:
The diagnosis for a 14-year-old girl who presents with prolonged bleeding after dental surgery and with menses, normal PT, normal or increased PTT, and increased bleeding time is Von Willebrand disease.
Von Willebrand disease is a genetic disorder that affects the blood's ability to clot. It is caused by a deficiency or abnormality of von Willebrand factor, a protein that plays a crucial role in clotting. Symptoms of Von Willebrand disease include prolonged bleeding after surgery, heavy or prolonged menstrual bleeding, and easy bruising. The diagnostic tests mentioned in the question, such as PT (prothrombin time), PTT (partial thromboplastin time), and bleeding time, are used to evaluate the function of the clotting cascade and diagnose bleeding disorders like Von Willebrand disease.
It is important for the girl to seek medical attention and get a proper diagnosis from a healthcare professional. Treatment for Von Willebrand disease may include medications to stimulate the release of von Willebrand factor or replace the missing protein, as well as measures to control bleeding during procedures or menstrual periods.