Showing posts with label infections. Show all posts
Showing posts with label infections. Show all posts

Friday, 20 September 2013

When Are Steroids Indicated In Epstein-Barr Virus Infections?

Infectious mononucleosis, caused by Epstein-Barr virus, is generally characterized by a triad of pharyngitis, fatigue, and cervical lymphadenopathy. Fever and splenomegaly are also common in presentation. These are symptoms primarily manifested by the host response rather than direct viral infection. The severity and duration of symptoms are variable and most commonly resolve by 2 to 3 months postinfection. However, some such as lymphadenopathy and fatigue may persist. Treatment is generally supportive and con- sists of rest (although strict bed rest is not necessary), over-the-counter symptomatic relief for fever and throat pain, and avoidance of contact sports until the patient is asymptomatic and, if splenomegaly is present, you are no longer able to palpate the spleen.

The use of steroids for treatment of infectious mononucleosis has long been controversial.  The lack of clear evidence of benefit has led to universal recommendations indicating that steroids have no role in the routine use of treatment of infectious mononucleosis. However, despite this, steroids continue to be used somewhat liberally in uncomplicated cases, perhaps to hasten return to school and normal activities because of persistent symptoms, patient demand, or the physician’s personal experience, clinical judgment, or training. Steroids are not without adverse effects. Rare case reports have linked the use of steroids for routine mononucleosis with myocarditis, mostly mild and asymptomatic, but causing supraventricular tachycardia in one case,  and neurologic complications including meningoencephalitis, seizures, and brachial plexus palsy.

Most patients with an acute EBV infection have a self-limited course and recover without sequelae. Rarely, however, severe complications can occur in both healthy and immonocompromised patients. It is during these times that the use of steroids may, indeed, be warranted. Airway obstruction or impending airway obstruction is due to tonsillar hypertrophy and occurs in approximately 3.5% of patients but has been reported to occur in as many as 25% of cases.9 Massive splenomegaly and splenic rupture are the other most commonly feared complications. Although mild splenomegaly is quite a common finding in acute mononucleosis, found in approximately 50% of patients, serious splenic complications are very rare, occurring in less than 1%. Splenic rupture usually is found to occur during the second and third weeks of illness, at the peak of splenomegaly. Neurologic complications occur in less than 1% of patients. Two of the most common neurologic complications are encephalitis and cranial nerve palsies. Other neurologic complications that have been reported are aseptic meningitis, acute disseminated encephalomyelitis, transverse myelitis, Guillain-BarrĂ© syndrome, optic neuritis, and Alice-in-Wonderland syndrome (a perceived distortion of object size).10  Other life-threatening complications reported include myocarditis, fulminant hepatitis, and liver failure, and hematologic manifestations such as hemolytic anemia, idiopathic thrombocytopenic purpura, and hemophagocytic lymphohistiocytosis. These, and other life-threatening complications, are all indications for use of steroid therapy. Steroids have been used anecdotally and in small case series for these indications, but no rigorous studies have been performed to confirm the benefit of steroid use in these situations. Nevertheless, it is expert opinion that steroids may be useful for these potentially life-threatening complications of EBV infection.

Monday, 24 June 2013

Steroids and Viral Infections in Kids

Researchers have discovered the wheezing and steroids don't mix when it comes to children. Two studies show that steroids do not change the course of viral infections in children.

The researchers tested 700 children aged 10 months to 5 years old. The study showed that children stayed in hospital the same amount of time regardless if they had steroids or not from viral infections that caused wheezing.
At this time doctors treat wheezing from infections the same as they do in asthmatic children.
The study also showed that steroids didn't change the symptoms over the following seven days.

A second study compared the use of steroids and a placebo in 129 children aged 1 to 6. The children were given one of the two at the first sign of nasal congestion, sore throat or any other symptom that might show an upper respiratory tract infection was coming on. The children received the treatment for up to 10 days twice daily. The drug seemed to help.
Eighteen percent of the children in the placebo group had to have additional steroid drugs. The children that had used steroids needing the additional medication was at eight percent.
The children using steroids grew less though than the ones in the placebo group.

Thursday, 2 May 2013

Neuro Viral Infections

Neural infections are among the most abundant organic diseases of the nervous system. Many infectious diseases of the nervous system have long been known, but only a small part of neural infections caused by bacterial pathogens, was studied in more detail. Etiologic factor in the large area neural infections are different viruses.

The widespread use of antibiotics and various chemotherapeutic agents changed the clinical picture of many very common ailments.

Through the use of antibiotics clinical manifestations neural infections to date is subject to change. Clinic septic diseases of the nervous system caused by the use of antibiotics has also undergone a change. Preventive vaccination against polio has left a mark on its clinical manifestations.

Certain diseases as highlighted only in recent years. Examples of such diseases is toxoplasmosis torulez. There are new, as yet little-studied forms, such as seasonal encephalitis, make up a large group of modern neural infections.

In the study of the pathogenesis of neural infections a lot of achievements. This applies to both bacterial and viral neural infections. An example of the unresolved questions of pathogenesis neural infections is a whole group of encephalomyelitis and close to him multiple sclerosis in its acute and chronic forms.

In the treatment of many infectious diseases of the nervous system of traditional medicine has advanced far ahead. But with regard to treatment of infections neural infections are many gaps, and there are no results that would allow them to talk about the possibility of rational treatment.