Lobular hemorrhage under the finger and toenail is one of the signs of infective endocarditis. Infective endocarditis is usually associated with fever, signs around the heart murmur, and arterial embolism. Diagnosis is easy in case of hand trauma. So, what are the tests that need to be done for lobar bleeding under finger and toe nails? The following is a brief introduction: 1, transesophageal echocardiography (TEE) is the use of a special probe location and high-quality image display, opening up a new window of cardiac macrovascular imaging, expanding the scope of transthoracic ultrasound examination, to make up for the shortcomings of TEE, and therefore gradually become more widely used in clinical practice. Transesophageal ultrasound is divided into single-plane, dual-plane, multi-plane and other types, electronic phased-array probe frequency 7-3.5MHz, including color Doppler flow imaging with 5.0-3.5MHz, spectral Doppler with 3.5MHz. Instrument adjustment is the same as transthoracic wall echocardiography. 2, blood routine is the most general, the most basic blood test. Routine blood tests are usually performed with peripheral blood, such as blood from the fingertips and earlobes. After the blood cell analysis instrument, the computer reports the results, and this item has become a practice to examine patients. Blood consists of two major parts, liquid and tangible cells, and routine blood tests are performed on the cellular part of the blood. Blood has three different functions of cells – red blood cells (commonly known as red blood cells), white blood cells (commonly known as white blood cells), and platelets. Diseases are determined by observing changes in number and morphological distribution. It is one of the common auxiliary tests used by doctors to diagnose the condition.