A hospital is a healthcare institution providing patient treatment with specialized health science and auxiliary healthcare staff and medical equipment.[1] The best-known type of hospital is the general hospital, which typically has an emergency department to treat urgent health problems ranging from fire and accident victims to a sudden illness. A district hospital typically is the major health care facility in its region, with many beds for intensive care and additional beds for patients who need long-term care. Specialized hospitals include trauma centers, rehabilitation hospitals, children's hospitals, seniors' (geriatric) hospitals, and hospitals for dealing with specific medical needs such as psychiatric treatment (see psychiatric hospital) and certain disease categories. Specialized hospitals can help reduce health care costs compared to general hospitals.[2] Hospitals are classified as general, specialty, or government depending on the sources of income received.

A teaching hospital combines assistance to people with teaching to health science students and auxiliary healthcare students. A health science facility smaller than a hospital is generally called a clinic. Hospitals have a range of departments (e.g. surgery and urgent care) and specialist units such as cardiology. Some hospitals have outpatient departments and some have chronic treatment units. Common support units include a pharmacy, pathology, and radiology.


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Hospitals are typically funded by public funding, health organizations (for-profit or nonprofit), health insurance companies, or charities, including direct charitable donations. Historically, hospitals were often founded and funded by religious orders, or by charitable individuals and leaders.[3]

Currently, hospitals are largely staffed by professional physicians, surgeons, nurses, and allied health practitioners, whereas in the past, this work was usually performed by the members of founding religious orders or by volunteers. However, there are various Catholic religious orders, such as the Alexians and the Bon Secours Sisters that still focus on hospital ministry in the late 1990s, as well as several other Christian denominations, including the Methodists and Lutherans, which run hospitals.[4] In accordance with the original meaning of the word, hospitals were original "places of hospitality", and this meaning is still preserved in the names of some institutions such as the Royal Hospital Chelsea, established in 1681 as a retirement and nursing home for veteran soldiers.

During the Middle Ages, hospitals served different functions from modern institutions in that they were almshouses for the poor, hostels for pilgrims, or hospital schools. The word "hospital" comes from the Latin hospes, signifying a stranger or foreigner, hence a guest. Another noun derived from this, hospitium came to signify hospitality, that is the relation between guest and shelterer, hospitality, friendliness, and hospitable reception. By metonymy, the Latin word then came to mean a guest-chamber, guest's lodging, an inn.[5] Hospes is thus the root for the English words host (where the p was dropped for convenience of pronunciation) hospitality, hospice, hostel, and hotel. The latter modern word derives from Latin via the Old French romance word hostel, which developed a silent s, which letter was eventually removed from the word, the loss of which is signified by a circumflex in the modern French word htel. The German word Spital shares similar roots.

Some patients go to a hospital just for diagnosis, treatment, or therapy and then leave ("outpatients") without staying overnight; while others are "admitted" and stay overnight or for several days or weeks or months ("inpatients"). Hospitals are usually distinguished from other types of medical facilities by their ability to admit and care for inpatients whilst the others, which are smaller, are often described as clinics.

The best-known type of hospital is the general hospital, also known as an acute-care hospital. These facilities handle many kinds of disease and injury, and normally have an emergency department (sometimes known as "accident & emergency") or trauma center to deal with immediate and urgent threats to health. Larger cities may have several hospitals of varying sizes and facilities. Some hospitals, especially in the United States and Canada, have their own ambulance service.

In California, "district hospital" refers specifically to a class of healthcare facility created shortly after World War II to address a shortage of hospital beds in many local communities.[6][7] Even today, district hospitals are the sole public hospitals in 19 of California's counties,[6] and are the sole locally accessible hospital within nine additional counties in which one or more other hospitals are present at a substantial distance from a local community.[6] Twenty-eight of California's rural hospitals and 20 of its critical-access hospitals are district hospitals.[7] They are formed by local municipalities, have boards that are individually elected by their local communities, and exist to serve local needs.[6][7] They are a particularly important provider of healthcare to uninsured patients and patients with Medi-Cal (which is California's Medicaid program, serving low-income persons, some senior citizens, persons with disabilities, children in foster care, and pregnant women).[6][7] In 2012, district hospitals provided $54 million in uncompensated care in California.[7]

A specialty hospital is primarily and exclusively dedicated to one or a few related medical specialties.[8] Subtypes include rehabilitation hospitals, children's hospitals, seniors' (geriatric) hospitals, long-term acute care facilities, and hospitals for dealing with specific medical needs such as psychiatric problems (see psychiatric hospital), cancer treatment, certain disease categories such as cardiac, oncology, or orthopedic problems, and so forth.

In Germany specialised hospitals are called Fachkrankenhaus; an example is Fachkrankenhaus Coswig (thoracic surgery). In India, specialty hospitals are known as super-specialty hospitals and are distinguished from multispecialty hospitals which are composed of several specialties.[9]

Specialised hospitals can help reduce health care costs compared to general hospitals. For example, Narayana Health's cardiac unit in Bangalore specialises in cardiac surgery and allows for a significantly greater number of patients. It has 3,000 beds and performs 3,000 in paediatric cardiac operations annually, the largest number in the world for such a facility.[2][10] Surgeons are paid on a fixed salary instead of per operation, thus when the number of procedures increases, the hospital is able to take advantage of economies of scale and reduce its cost per procedure.[10] Each specialist may also become more efficient by working on one procedure like a production line.[2]

A teaching hospital delivers healthcare to patients as well as training to prospective medical professionals such as medical students and student nurses. It may be linked to a medical school or nursing school, and may be involved in medical research. Students may also observe clinical work in the hospital.[11]

A hospital contains one or more wards that house hospital beds for inpatients. It may also have acute services such as an emergency department, operating theatre, and intensive care unit, as well as a range of medical specialty departments. A well-equipped hospital may be classified as a trauma center. They may also have other services such as a hospital pharmacy, radiology, pathology, and medical laboratories. Some hospitals have outpatient departments such as behavioral health services, dentistry, and rehabilitation services.

A hospital may also have a department of nursing, headed by a chief nursing officer or director of nursing. This department is responsible for the administration of professional nursing practice, research, and policy for the hospital.

The declaration of Christianity as an accepted religion in the Roman Empire drove an expansion of the provision of care.[21] Following the First Council of Nicaea in AD 325 construction of a hospital in every cathedral town was begun, including among the earliest hospitals by Saint Sampson in Constantinople and by Basil, bishop of Caesarea in modern-day Turkey.[22] By the twelfth century, Constantinople had two well-organised hospitals, staffed by doctors who were both male and female. Facilities included systematic treatment procedures and specialised wards for various diseases.[23]

The earliest general hospital in the Islamic world was built in 805 in Baghdad by Harun Al-Rashid.[24][25] By the 10th century, Baghdad had five more hospitals, while Damascus had six hospitals by the 15th century, and Crdoba alone had 50 major hospitals[when?], many exclusively for the military.[26] The Islamic bimaristan served as a center of medical treatment, as well nursing home and lunatic asylum. It typically treated the poor, as the rich would have been treated in their own homes.[27] Hospitals in this era were the first to require medical diplomas to license doctors, and compensation for negligence could be made.[28][additional citation(s) needed] Hospitals were forbidden by law to turn away patients who were unable to pay.[29][need quotation to verify] These hospitals were financially supported by waqfs,[29] as well as state funds.[26]

In Europe the medieval concept of Christian care evolved during the sixteenth and seventeenth centuries into a secular one. In England, after the dissolution of the monasteries in 1540 by King Henry VIII, the church abruptly ceased to be the supporter of hospitals, and only by direct petition from the citizens of London, were the hospitals St Bartholomew's, St Thomas's and St Mary of Bethlehem's (Bedlam) endowed directly by the crown; this was the first instance of secular support being provided for medical institutions. e24fc04721

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