The Abdominojugular Reflux Test (AJR) is a clinical method for evaluating the function of the right heart, especially its ability to handle increased venous return. The test is performed by applying pressure to the center of the abdomen, which causes an increase in venous pressure in the jugular vein. The presence of persistently elevated pressure during abdominal pressure indicates a reduced ability of the right heart to pump blood efficiently. This test is useful in diagnosing right-sided heart failure and can help differentiate causes of dyspnea. In a study published in the New England Journal of Medicine, the authors emphasize that AJR is a simple, fast and reliable clinical tool. The test has high specificity and sensitivity in identifying increased right-sided pressure. The test results can be used to complement other diagnostic methods in the assessment of the patient's cardiac condition. Overall, AJR provides valuable information about the hemodynamics of the right heart without the need for invasive examinations.