semisupine

Semisupine, also written semi-supine, is a body position in which a person lies on their back (supine) with the upper body elevated relative to the lower body. The exact angle of incline varies by context but is typically modest, commonly around 15 to 45 degrees. It sits between the fully supine position and more upright postures such as Fowler’s or sitting.

In clinical use, semisupine is employed to balance access to the upper body with patient comfort and physiological stability. It is used during certain diagnostic procedures, imaging, and surgical or airway management workflows where some head and chest elevation is advantageous. In obstetric care, semisupine can be used with a leftward tilt to reduce vena caval compression in late pregnancy, while preserving chest expansion. In rehabilitation and therapy settings, the position can ease breathing, lessen abdominal load, and accommodate devices or seating supports.

Positioning technique involves supporting the upper back and shoulders with a backrest, wedge pillow, or adjustable bed to achieve the desired incline while keeping the spine aligned. Careful monitoring of comfort, airway, and pressure points is important, and the choice of angle should be tailored to the patient’s condition and procedure.

Related terms include the neutral supine position and various semi-upright positions such as the semi-recumbent or Fowler positions. Semisupine is not a fixed pose and may be adapted as needed for clinical goals.