出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2015/02/09 02:43:12」(JST)
| Puerperal fever | |
|---|---|
|
Streptococcus pyogenes (red-stained spheres) is responsible for most cases of severe puerperal fever. It is commonly found in the throat and nasopharynx of otherwise healthy carriers, particularly during winter. Details: A pus specimen, viewed using Pappenheim's stain @ 900x magnification
|
|
| Classification and external resources | |
| ICD-10 | O85 |
| ICD-9 | 672 |
| MeSH | D011645 |
Puerperal fever or childbed fever or puerperal infection, is a condition that results from an infection of the female reproductive organs, contracted during or following childbirth or miscarriage. Usually diagnosed when cases of fever of 100.4 °F (38 °C) and higher during the first 10 days following childbirth or miscarriage are found. If untreated, it is often fatal.
Historically, puerperal fever was a devastating disease. It affected women within the first three days after childbirth and progressed rapidly, causing acute symptoms of severe abdominal pain, fever and debility.
The most common infection causing puerperal fever is genital tract sepsis caused by contaminated medical equipment or unhygienic medical staff who contaminate the mother's genital tract during childbirth. Other types of infection that can lead to sepsis after childbirth include urinary tract infection, breast infection (mastitis) and respiratory tract infection (more common after anaesthesia due to lesions in the trachea). Puerperal fever is now rare in the West due to improved hygiene during childbirth, and the few infections that do occur are usually treatable with antibiotics.
After childbirth a woman's genital tract has a large bare surface, which is prone to infection. Infection may be limited to the cavity and wall of her uterus, or it may spread beyond to cause septicaemia (blood poisoning) or other illnesses, especially when her resistance has been lowered by a long labour or severe bleeding. Puerperal infection is most common on the raw surface of the interior of the uterus after separation of the placenta (afterbirth); but pathogenic organisms may also affect lacerations of any part of the genital tract. By whatever portal, they can invade the bloodstream and lymph system to cause septicemia, cellulitis (inflammation of connective tissue), and pelvic or generalized peritonitis (inflammation of the abdominal lining). The severity of the illness depends on the virulence of the infecting organism, the resistance of the invaded tissues, and the general health of the woman. Organisms commonly producing this infection are Streptococcus pyogenes; staphylococci (inhabitants of the skin and of pimples, carbuncles, and many other pustular eruptions); the anaerobic streptococci, which flourish in devitalized tissues such as may be present after long and injurious labour and unskilled instrumental delivery; Escherichia coli and Clostridium welchii (inhabitants of the lower bowel); and Clostridium tetani.
Causes (listed in order of decreasing frequency) include endometritis, urinary tract infection, pneumonia\atelectasis, wound infection, and septic pelvic thrombophlebitis. Septic risk factors for each etiologic condition are listed in order of the postpartum day (PPD) on which the condition generally occurs.
Puerperal fever is diagnosed when:
Puerperal fever (from the Latin puer, male child (boy)), is no longer favored as a diagnostic category. Instead, contemporary terminology specifies:[2]
Endometritis is a polymicrobial infection. It frequently includes organisms such as Ureaplasma, Streptococcus, Mycoplasma, and Bacteroides, and may also include organisms such as Gardnerella, Chlamydia, Lactobacillus, Escherichia, and Staphylococcus.[3]
Atelectasis: mild to moderate fever, no changes or mild rales on chest auscultation. Management: pulmonary exercises, ambulation.
Urinary tract infection : high fever, malaise, costovertebral tenderness, positive urine culture. Management: antibiotics as per culture sensitivity (cephalosporine).
Endometritis: moderate fever, exquisite uterine tenderness, minimal abdominal findings. Management: multiple agent IV antibiotics to cover polymicrobial organisms: clindamycin, gentamicin, addition of ampicillin if no response, no cultures are necessary.
Wound infection: persistent spiking fever despite antibiotics, wound erythema or flactuance, wound drainage. Management: antibiotics for cellulitis, open and drain wound, saline-soaked packing twice a day, secondary closure.
Septic pelvic thrombophlebitis: persistent wide fever swings despite antibiotics, usually normal abdominal or pelvic exams. Management: IV heparin for 7–10 days at rates sufficient to prolong the PTT to double the baseline values.
Mastitis: unilateral, localized erythema, edema, tenderness. Management: antibiotics for cellulitis, open and drain abscess if present.
[4] [5]
The incidence of puerperal sepsis shows wide variations among published literature — this may be related to different definition, recording etc.[1]
Today in the United States, puerperal infection is believed to occur in between one and 8 percent of all births. About three die from puerperal sepsis for every 100,000 births. The single most important risk factor is Caesarean section.[6]
In the United Kingdom 1985-2005, the number of direct deaths associated with genital tract sepsis per 100,000 maternities was 0.40–0.85.[7]
The incidence of maternal deaths in the United States is 13 in 100,000.
Puerperal fever or childbed fever in the 18th and 19th centuries affected, on average, 6 to 9 women in every 1,000 births, killing two to three of them with peritonitis or septicemia. It was the single most common cause of maternal mortality, accounting for about half of all deaths related to childbirth, and was second only to tuberculosis in killing women of childbearing age. A rough estimate is that about 250,000–500,000 died from puerperal fever in the 18th and 19th centuries in England and Wales alone.[8]
The Confidential Enquiry into Maternal and Child Health (UK) reported, in 2003–2005, genital tract sepsis accounted for 14% of direct causes of maternal death[9] still making puerperal fever a significant factor in maternal death.
Although it had been recognized from as early as the time of the Hippocratic corpus that women in childbed were prone to fevers, the distinct name, “puerperal fever” appears in historical records only from the early 18th century.[10]
The death rate for women giving birth plummeted in the 20th century in developed countries. The decline may be partly attributed to improved environmental conditions, better obstetrical care, and the use of sulfonamides and later antibiotics. Another reason appears to be a lessening of the virulence or invasiveness of Streptococcus pyogenes. This organism is also the cause of scarlet fever, which over the same period has also declined markedly in severity and incidence.
The historical level of maternal deaths is probably around 1 in 100 births.[11] Mortality rates reached very high levels in maternity institutions in the 1800s, sometimes climbing to 40 percent of birthgiving women (see Historical mortality rates of puerperal fever). At the beginning of the 1900s, maternal death rates were around 1 in 100 for live births.
From the 1600s through the mid to late 1800s, the majority of childbed fever cases were caused by the doctors themselves. With no knowledge of germs, doctors did not believe hand washing was needed. Statements like that of Charles Meigs, a leading obstetrician and teacher from Philadelphia, were the attitude of the time: "Doctors are gentlemen, and gentlemen's hands are clean."[12] In the 1800s Ignaz Semmelweis noticed that women giving birth at home had a much lower incidence of childbed fever than those giving birth in the doctor's maternity ward. His investigation discovered that washing hands with an antiseptic solution before a delivery reduced childbed fever fatalities by 90%.[13] Publication of his findings was not well received by the medical profession. The idea conflicted both with the existing medical concepts and with the image doctors had of themselves.[14] The scorn and ridicule of doctors was so extreme that Semmelweis moved from Vienna and was eventually committed to a mental asylum where he died.[15]
Semmelweis was not the only doctor ignored after sounding a warning about this issue: in Treatise on the Epidemic of Puerperal Fever (1795), ex-naval surgeon and Aberdonian obstetrician Alexander Gordon warned that the disease was transmitted from one case to another by midwives and doctors. Gordon wrote, "It is a disagreeable declaration for me to mention, that I myself was the means of carrying the infection to a great number of women."[16]
Hospitals for childbirth became common in the 17th century in many European cities. These "lying-in" hospitals were established at a time when there was no knowledge of antisepsis or epidemiology, and women were subjected to crowding, frequent vaginal examinations, and the use of contaminated instruments, dressings, and bedding. It was common for a doctor to deliver one baby after another, without washing his hands or changing clothes in between.
The first recorded epidemic of puerperal fever occurred at the Hôtel-Dieu de Paris in 1646. Hospitals throughout Europe and America consistently reported death rates between 20% to 25% of all women giving birth, punctuated by intermittent epidemics with up to 100% fatalities of women giving birth in childbirth wards.[17]
A number of physicians began to suspect contagion and hygiene as causal factors in spreading puerperal fever. In 1795, Alexander Gordon of Aberdeen, Scotland suggested that the fevers were infectious processes, that physicians were the carrier, and that "I myself was the means of carrying the infection to a great number of women.”[18] Thomas Watson, Professor of Medicine at King's College Hospital, London, wrote in 1842: "Wherever puerperal fever is rife, or when a practitioner has attended any one instance of it, he should use most diligent ablution." Watson recommended handwashing with chlorine solution and changes of clothing for obstetric attendants "to prevent the practitioner becoming a vehicle of contagion and death between one patient and another."[19]
In 1843, Oliver Wendell Holmes published The Contagiousness of Puerperal Fever[20] and controversially concluded that puerperal fever was frequently carried from patient to patient by physicians and nurses; he suggested that clean clothing and avoidance of autopsies by those aiding birth would prevent the spread of puerperal fever.[21] Holmes quoted Dr. James Blundell as stating, "... in my own family, I had rather that those I esteemed the most should be delivered unaided, in a stable, by the mangerside, than that they should receive the best help, in the fairest apartment, but exposed to the vapors of this pitiless disease."[21]
Holmes' conclusions were ridiculed by many contemporaries, including Charles Delucena Meigs, a well-known obstetrician, who stated, "Doctors are gentlemen, and gentlemen's hands are clean."[22] Richard Gordon states that Holmes' exhortations "outraged obstetricians, particularly in Philadelphia".[23] In those days, "surgeons operated in blood-stiffened frock coats - the stiffer the coat, the prouder the busy surgeon", "pus was as inseparable from surgery as blood", and "Cleanliness was next to prudishness". He quotes Sir Frederick Treves on that era: "There was no object in being clean...Indeed, cleanliness was out of place. It was considered to be finicking and affected. An executioner might as well manicure his nails before chopping off a head".[24]
In 1844, Ignaz Semmelweis was appointed assistant lecturer in the First Obstetric Division of the Vienna General Hospital (Allgemeines Krankenhaus), where medical students received their training. Working without knowledge of Holmes' essay, Semmelweis noticed his ward’s 16% mortality rate from fever was substantially higher than the 2% mortality rate in the Second Division, where midwifery students were trained. Semmelweis also noticed that puerperal fever was rare in women who gave birth before arriving at the hospital. Semmelweis noted that doctors in First Division performed autopsies each morning on women who had died the previous day, but the midwives were not required or allowed to perform such autopsies. He made the connection between the autopsies and puerperal fever after a colleague, Jakob Kolletschka, died of septicaemia after accidentally cutting his hand while performing an autopsy.
Semmelweis began experimenting with various cleansing agents and, from May 1847, ordered all doctors and students working in the First Division wash their hands in chlorinated lime solution before starting ward work, and later before each vaginal examination. The mortality rate from puerperal fever in the division fell from 18% in May 1847 to less than 3% in June–November of the same year.[25] While his results were extraordinary, he was treated with skepticism and ridicule (see Response to Semmelweis).
He did the same work in St. Rochus hospital in Pest, Hungary, and published his findings in 1860, but his discovery was again ignored.[26]
In 1935, Leonard Colebrook showed Prontosil was effective against haemolytic streptococcus and hence a cure for puerperal fever.[27][28]
Elizabeth of York, the mother of Henry VIII of England, died of puerperal fever one week after giving birth to a daughter. Other famous victims include author Jean Webster, English queens Jane Seymour and Katherine Parr (both wives of Henry VIII), housekeeping authority Isabella Beeton, famous French natural philosopher Émilie du Châtelet and Mary Wollstonecraft, author of Vindication of the Rights of Woman and mother of Frankenstein author Mary Shelley. Suzanne Barnard, mother of philosopher Jean-Jacques Rousseau, contracted childbed fever after giving birth to him, and died nine days later. Her infant son was also in perilous health following the birth; the adult Rousseau later wrote that "I came into the world with so few signs of life that little hope was entertained of preserving me". He was nursed back to health by an aunt.[29] African-American poet Phillis Wheatley (1753–84) died of puerperal fever. In Charles Dickens' novel A Christmas Carol, it is implied that both Scrooge's mother and elder sister perished from this condition, explaining the character's animosity towards his nephew Fred and also the poor relationship he kept with his own father.
|date= (help)|date= (help)|date= (help)|date= (help)|date= (help) in Richard Gordon. (1983), Great Medical Disasters. p.147 (see also p.43 for selected quote).
|
||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
全文を閲覧するには購読必要です。 To read the full text you will need to subscribe.
| リンク元 | 「産褥感染」「産褥感染症」 |
| 関連記事 | 「puerperal」「infection」 |