Figure 4.

(A) A mechanism map of a 45-year-old man presenting with cough, shortness of breath. Found to have an increased BUN/Cr ration, a decreased hematocrit, and a normal white blood cell count. (B) A concept map of the clinical case. AFib = atrial fibrillation; BUN/Cr = blood urea nitrogen to creatinine ratio; CAD = coronary artery disease; CO/Q = cardiac output; CVP = central venous pressure; CXR = chest X-ray; GI = gastrointestinal; HR = heart rate; Hx HTN = history of hypertension; MAP = mean arterial pressure; RV = right ventricle; SV = stroke volume; SVR = systemic vascular resistance; WBC = white blood cell.