PSh

PSH is an acronym used in several different fields, and its meaning depends on the context in which it appears.

In medical record-keeping, PSH commonly stands for Past Surgical History. This refers to a patient’s prior surgical procedures and is typically documented alongside other history components such as PMH (past medical history) and FH (family history). The information helps clinicians understand prior interventions, guide perioperative planning, and assess potential risk factors.

In neurology and stroke care, PSH can denote Post-stroke hyperglycemia, a condition in which blood glucose levels are elevated after an acute stroke. PSH is associated with worse outcomes, longer hospital stays, and may require targeted management to control glucose levels, depending on the patient’s overall condition.

In computer networking, PSH is a flag in the Transmission Control Protocol (TCP) header, short for Push. The PSH bit indicates that data should be passed to the receiving application immediately, rather than being buffered. This flag is used to improve real-time data delivery in certain communication scenarios and is part of the standard TCP header along with other control bits such as URG, ACK, and SYN.

Because PSH has multiple domain-specific meanings, it is important to rely on contextual cues to determine the intended definition. Other fields may assign PSH to additional terms as needed.