Smallpox

Smallpox

Our world has been eradicated from Smallpox. The last case of endemic smallpox was reported in 1977 from Somalia. In 1980 the World Health Organization officially declared that smallpox had been eliminated worldwide as a result of a global vaccination and eradication program. The only known remaining samples of smallpox virus are two research laboratories – located in the United States and Russia.

Smallpox was a relatively less contagious disease whose transmission required close contact. Fever and macular rash appeared after an average incubation period of 12 days, with a progression to typical vesicular and pustular lesions over 1 to 2 weeks.

Clinical features

This disease is spread by inhalation of air droplets or aerosols. Twelve to 14 days after catching infection, the patient becomes febrile and has severe aching pains. Some 2 to 3 days later, a papular rash develops over the face and spreads to the extremities. The rash soon becomes vesicular and later, pustular. The patient remains febrile throughout the evolution of the rash and experiences considerable pain as the pustules grow and expand. Gradually, scabs form, which eventually separate, leaving pitted scars. In severe cases death usually occurs during the second week.

Before the eradication of the smallpox this disease was confused frequently with chickenpox mainly during the early stage.

The differentiating features are:

All smallpox lesions develop at the same pace and, on any part of the body, appear identical.

Chickenpox lesions are much more superficial and develop in crops. With chickenpox, scabs, vesicles, and pustules may be seen simultaneously on adjacent areas of skin. Moreover, the rash in chickenpox is more dense over the trunk which is reverse with smallpox. Chickenpox lesions are almost never found on the palms or soles.

In 5-10% of the patients the disease takes a malignant shape and the patients die in 5-7 days. There may be bleeding in the skin and other parts of the body especially the intestines.

Vaccination

The only protection against this disease is vaccination. Vaccination before exposure or within 2 to 3 days after exposure affords almost complete protection against disease. Vaccination as late as 4 to 5 days after exposure may protect against death. Because smallpox can only be transmitted from the time of the earliest appearance of rash, early detection of cases and prompt vaccination of all contacts is very important in the spread of this disease.

Smallpox vaccination is associated with some risk of adverse reactions. The two most serious are postvaccinal encephalitis and progressive vaccinia. Postvaccinal encephalitis may be fatal and those who survive may have residual neurological damage. Progressive vaccinia is seen in those with immunosuppression.

Before the eradication of smallpox, variola virus existed as two related strains: variola major (smallpox), with a case-mortality rate of 20 to 50 percent, and variola minor (alastrim), which caused a clinically milder form of smallpox with a mortality of less than 1 percent.

The vaccine against smallpox is made from vaccinia virus. Its origin is uncertain, but it was probably derived from cowpox virus, variola virus, or a hybrid of the two. Experience has proven the effectiveness of live vaccinia-virus vaccine. Percutaneous administration of vaccinia virus vaccine results in protective immune responses in more than 95 percent of primary vaccines. Formation of a pustule and scab at the site of inoculation is indicative of immunity. Because immunity wanes after 10 to 20 years, revaccination every 10 years is recommended for continued protection. Routine smallpox vaccination was discontinued in 1971 and has not been required for international travel since 1982. However, use of vaccinia viruses for use in vaccines against other infectious agents or as immunotherapy against malignant diseases has led to the recommendation that laboratory and health care employees working directly with vaccinia virus be considered for vaccination. Selected groups that may be exposed to poxviruses (e.g., some military personnel and individuals who work with animals) should also be vaccinated.
Researchers at the University of North Carolina say many people vaccinated against smallpox more than 35 years ago are still immune to the disease.The findings published in Thursday’s edition of the New England Journal of Medicine refute the widely-held belief by doctors that the vaccine lasts no more than 10 years.

Chickenpox

Chickenpox

Chickenpox 

Chickenpox, a extremely contagious infection, is usually a benign illness of childhood characterized by an exanthematous vesicular rash. Children between the ages of 5 and 9 are most commonly affected and account for 50 percent of all cases.

Clinically, chickenpox presents as a rash, low-grade fever, and malaise.

The skin lesions, the hallmark of the infection, include maculopapules, vesicles, and scabs in various stages of development. These lesions, which evolve from maculopapules to vesicles over hours to days, appear on the trunk and face and rapidly spread to involve other areas of the body. Most are small and have an erythematous base with a diameter of 5 to 10 mm. Successive crops of rash appear over a 2 to 4 day period. Lesions also can be found on the mucosa of the pharynx and or the vagina. Their severity varies from one individual to another. Some individuals have very few lesions, while others have as many as 2000. Younger children tend to have fewer vesicles than older individuals.

The most common infectious complication of chickenpox is secondary bacterial superinfection of the skin.

The most common extracutaneous site of involvement in children is the nervous system. Pneumonia is the most serious complication following chickenpox, developing more commonly in adults.

Other complications of chickenpox include myocarditis, corneal lesions, nephritis, arthritis, bleeding diatheses, acute glomerulonephritis, and hepatitis.

Chickenpox, is more severe in the immunocompromised than in the normal individual.

 

 

Smallpox

Cleft Lip & Palate

CLEFT LIP AND PALATE

Cleft Lip & Palate

It is a sad experience for any parent to find its newborn child to have a birth defect of Cleft Lip and Palate. It is not only the parents, but also close relatives and friends, who get alarmed about the nature and the cause of the defect and worry about future development of the child. In general, birth defects could either involve internal organs, the external parts separately or both in varying combinations. Usually defects involving internal organs of the body are detected late in childhood either due to their effects on the child’s growth or due to incompatibility with life and thus do not have an immediate significant psychological stress. But birth defects like Cleft Lip and Palate are obvious immediately after the birth and these can cause more psychological problems to parents. Fortunately, with the modern surgical techniques available today, most of the deformities of Cleft Lip & Palate could be reconstituted to a near normal appearance and function.

Which other types of defects can be corrected with plastic surgery ? 
The congenital defect coming under the scope of Plastic and Reconstructive surgery range from deformities of the External Ear, Facial Bones, Eyelids, Nose, Lips,

Cleft Lip before repair

Palate, Trunk, Extremities and Genitalia. Plastic Surgeons also use surgery for many types of cosmetic works.

Is it true that exposure to a Solar Eclipse during pregnancy can cause congenital deformities in the fetus?
It is a widely accepted and a popular myth, that watching of a solar eclipse by an expectant mother may lead to d evelopment of cleft lip in children, but fortunately, it does not have any scientific rationale. It is a fact, that parents often blame themselves for development of such birth defects in their children, which is totally wrong. In trying to find out the causes for such a calamity, they start believing in a number of unscientific theories like exposure to eclipse or God’s punishment etc. Often, under the belief that the God for some misdeed has punished them, they do not subject their children for surgical correction at proper age. Scientifically, it is extremely difficult to attribute any single factor responsible for any type of birth defect. Familial tendencies (hereditary), severe anemia during pregnancy, viral diseases like measles, typhoid etc. during early weeks of pregnancy, can be contributing factors. Drug addiction as well as excessive smoking of pregnant women may influence the development of the organs during the formative period i.e. 6 – 9 weeks of gestation. Also excessive use of antibiotics, painkillers, Vitamin A or sedatives, do have an effect on the fetus. However, it is difficult to pinpoint any single factor in a given case but these factors alone or in combination may lead to congenital defects.

What about the hereditary factor you had mentioned earlier?
Hereditary does play a significant role in development of certain congenital defects e.g. cleft lip and palate. If either of the parents or both, have this deformity, chances of

Cleft Lip after repair

their child developing a similar deformity is definitely more than otherwise. However, it is also not certain that a child will definitely inherit all birth defects of either of his / her parents.

Why is it that often-congenital defects not only affect the physical, but also the mental capacity of the child?
Congenital defects do have a great impact on a child’s physical, mental, psychological and personality development. By and large, most of these defects barring a few like hearing, vision or articulation of the speech, do not affect normal mental development or intelligence of the child. The feeling of not having something or looking different from others may sometimes make these children either more hostile or introverted in their personal life.

What is the Image building role of parents in such cases?
Parents should be well advised by their family doctor or attending physician to understand the exact nature of the birth defect and its implications, which would end up in influencing the development of personality complexes. For some times even after successful physical and functional correction of the defects, it is difficult for a child to revert back to normal behavior.

In order to avoid prolonged mental agony, is it advocated to resort to an Immediate Surgery for correction of this congenital defect?
It is not necessary that all defects are corrected immediately after birth, but a regular examination by the specialist doctor and monitoring the growth of the child, would be very helpful in over all rehabilitation of these children. Proper medical guidance and reassurance that the child would look as normal as otherwise and be able to perform most of the physical necessities effectively would defin itely restore the confidence of parents, thus influencing the child’s psychology in formative years of his life.

Is it possible that all these defects can be rectified with surgery?
Not all congenital defects need surgical procedures for their reconstitution. Quite a few of these defects are self-limiting and would cease to grow after a certain age. You will be surprised to know that many children with severe congenital deformities adapt to their deformities so well by natural development, that any surgical or external interference would hamper rather than help functioning of these children.

At what age is it advisable to undergo surgical correction?
Common and an ideal age for surgical correction of most of these congenital defects is preschool age, so as when the child leaves the protected atmosphere of his home and has to mix with unfamiliar faces, he is apparently normal both in appearance as well as in functioning. Some defects can be corrected in one stage; however, others may require a series of stages, depending upon the nature of the defect.

Which congenital defects in your opinion would require an early surgery? Deformities like cleft lip, cleft palate, club foot, extrophy of the urinary bladder, ano-rectal malformation, arterio-venous malformations etc., which either influence proper development of the child or hamper vital functions, are subjected to an early surgical procedure. On the other hand, defects like port wine stains, cavernous Hemangioma, polydactily, facial asymmetry, distal hypospadias etc. can be left untreated for years or to be operated upon after complete body growth.

Which is the most common congenital defect?
Cleft lip and palate is one of the commonest congenital defects. On average about 1 in 800 normal childbirth, has one of these deformities. It has been observed that cleft of the palate is found more in females than in males.

Is a cleft lip normally accompanied by a cleft palate?
The structural identification and formation of lip, palate and other organs begin sometimes between seven to nine weeks of gestation. Lip and palate develop independently embryologicaly, hence either of these defects could occur separately or in varying combinations. In case of cleft of lip, invariably upper lip is involved and may range from a small notch at the lower border to a complete cleft of the lip upto the base of the nose, either on one side or both. This may also extend up to teeth, jaw or even junction of eye and nose. Similarly the defect in the palate may be a small invisible hole in the mobile portion of the palate or split uvula to complete cleft of both the mobile (soft) and bony palate. This may also extend up to the jaws in continuity with the cleft of the lip or may occur alone. A mother would find it difficult to breast-feed her newborn infant, who has a cleft lip and palate.

How does she go about it?
Due to muscular deficiency associated with cleft lip and palate, the child cannot develop sufficient intra-oral pressure to suck the milk from the mother’s br east. A mother should understand this and either assist the child by manual pressure on the breast or feed the child with a spoon or even from a feeding bottle with a large nipple hole. It must be further understood that children born with a cleft lip and palate, have a tendency to swallow excessive air along with milk and burping them often is important.

At what age is it important for cleft lip and palate to be surgically operated?
The aim of surgery in these cases is to restore anatomical continuity of the affect part before their normal functioning utility. Surgical correction of the cleft lip deformity is done between the age of 3 months to 6 months. At few centers of the world including one in India, the cleft lip is corrected within 24 – 48 hours after the birth, so as to minimize the psychological impact on the parents and to take advantage of extra strong healing power at this age transferred to the neonate from his / her mother. In case of cleft of the palate, the ideal time for surgical correction is between 12-18 months before the child starts articulation of speech, as also the oral cavity becomes large enough to allow the surgeon to work inside. In some cases additional surgical correction may be required to improve the speech at around the age of 4 – 5 years.

In this modern high technology age, do all parents of children with such a congenital deformity of cleft lip and / or palate want to have this operation performed immediately?
You will be surprised to know that most of such children do not get proper medical attention or advise for surgical correction. Due to some unfounded myths, parents do not come forward requesting an immediate surgery and some do not bother at all. Recently, there was a case of Young lady of 62 years, who had this operation performed. Often unacceptable results are due to operation performed by an incompetent or unqualified surgeon and may require secondary corrections, when the child has reached adolescence.

Is there anything wrong in having this operation done at a later age?
When children with a cleft palate come for surgery at a later age, they pose one more problem of faulty speech and articulation habits. It would require postoperative treatment of a speech therapist to retrain the child for correct speech. If for some medical reasons, the child cannot be subjected to an early surgery, then a prosthetic obturator is recommended. For proper growth of the jaw and dental arches in these patients, orthodontic assistance is required and this treatment may continue till the age of 15-16 years.

What are other common congenital defects?
Deformities of extremities are one of the common congenital deformities. Congenital defects in Upper limbs vary from minor bending of fingers to a total absence of the limb. Commonly seen problems include joining of two or more fingers (Syndactily), presence of extra fingers or digit (Polydactily) or short fingers (Bradydactily), absence of thumb, index or more fingers etc. These may be associated with deformities of muscles and / or bones.

Can you explain the corrective surgery for such defects?
Supernumerary digit can be surgically removed. The joined fingers are usually separated at the age of 4 – 5 years, unless they hamper the normal growth of the adjoining finger. The absence of thumb can also be corrected either by transferring the great / second toe from the foot by Microvascular surgery or by repositioning the index finger in place of thumb. Most commonly seen congenital deformities of the external genital organs are hypospadias i.e. the urinary opening on the undersurface of the penis, epispadias – urinary opening on the dorsal surface of the penis or extrophy of the bladder. Genital organs may be poorly developed or totally rudimentary. Minor and rare deformities include torsion of penis, anterior location of scrotum, bifid penis or absence of vagina. Preschool age is usually best time to undertake and complete most of the Reconstructive Surgical steps. For extreme case e.g. Extrophy of the Urinary bladder, which requires a multi-stage correction, Reconstructive surgery is started at the age of 1- 1½ years.

Dr. Sanjeev Uppal
Plastic Surgeon
DMCH Ludhiana

133  D, Kichlu Nagar,
LUDHIANA  141001
suppal@satyam.net.in

Pregnant Women ~ need to know

Common Problems in Pregnancy

Common Problems in Pregnancy

During pregnancy, drugs have to be prescribed with great caution as some drugs can harm the developing foetus while others can affect the course of pregnancy. Some of the common problems women can face during pregnancy and the guidelines for managing these situations are listed below:

Nausea and vomiting

Nausea and vomiting are the most frequent symptoms in pregnancy and can be quite distressing though these symptoms usually disappear by the fourth month. Women should be reassured and advised to take smaller, more frequent meals and to avoid large volume drinks. Nausea in the first three months of pregnancy does not normally require drug therapy. On some occasions when the symptoms are severe or prolonged, antiemetics such as doxylamine or prornethazine can be given.

Heartburn

For heartburn, antacids are widely prescribed in all trimesters. There is no evidence of foetal abnormalities.

Constipation

The inclusion of more fibre and fluids in the diet may be sufficient to relieve constipation. Laxatives should only be used when dietary changes prove ineffective. Bulk forming laxatives should be first tried such as Ispaghula. Stimulant laxatives such as senna are best avoided. Bisacodyl, Lactulose and docusate are all thought to be safe during pregnancy.

Asthma

The drug treatment of Asthma is essentially unchanged by pregnancy. There is no evidence that the commonly used drugs by asthmatics harm the foetus and women. Inhaled medication should be preferred. There is no evidence that the inhaled corticosteroids are harmful to the foetus. Short courses of systemic steroids may also be given.

Vaginal discharge

For vaginal discharge, topical agents are to be preferred over oral medications. Discharge due to candida can be treated with clotrimazoleTopical clindamycin is effective in bacterial vaginosis and may be considered for women in the first trimester. Oral metronidazole can be given if required during second and third trimester if trichomonas infection is confirmed. However, it should not be administered during first three months. Oral antifungal drugs such as fluconazole and itraconazole should be avoided.

Allergy

Promethazine and chlorpheniramine are the antihistamines of choice in pregnant women with allergic rhinitis and urticaria. Non- sedating compounds such as cetirizine are best avoided because of lack of experience in pregnancy. Use of loratidine is contraindicated during pregnancy.

Antibiotics

Urinary tract infections are the most common reason for prescribing antibiotics during pregnancy, although they are frequently needed for many other infections.

Class of Antibiotic Commonly used Drugs Safety in Pregnancy
Penicillins Ampicillin, Amoxycillin, Cloxacillin, Penicillin No evidence of problems.
Cephalosporins Cephalexin No evidence of problems.
Macrolides Erythromycin No evidence of problems.
Aminoglycosides Gentamycin, Netilmicin Avoid- Risk of Foetal toxicity
Tetracycline Oxytetracycline, Tetracycline, Minocycline Avoid- exposure at or after 12 weeks of gestation can affect developing teeth and bones.
Quinolones Ciprofloxacin, Norfloxacin, Ofloxacin Avoid – Insufficient evidence of safety
Other Antibiotics Nitrofurantoin No evidence of problem
Metronidazole No evidence of increased foetal risk. However to be used with care in the first trimenster.
Trimethoprim Avoid in the first trimester. However no evidence of increased foetal risk.

Pain

For pain, paracetamol is the analgesic of choice. Aspirin is not recommended as it can cause bleeding in late pregnancy. At present there is insufficient evidence of safety to recommend the use of ibuprofen in pregnancy. NSAID painkillers are best avoided in late pregnancy as they can cause premature closure of ductus arteriosus (foetal heart opening).

Hypertension

Hypertension is fairly common during pregnancy. Severe hypertension in the mother carries a risk of cerebrovascular accident and cardiac problems. It can lead, to eclampsia (convulsions) during pregnancy.

If a pregnant woman’s blood pressure is sustained greater than 160 mm Hg systolic and/or 110 mm Hg diastolic at any time, lowering the blood pressure quickly with rapid-acting agents is indicated for maternal safety.

Most of the antihypertensive drugs are excreted into human breast milk, but most are excreted to a negligible degree. All antihypertensive medications are believed to be compatible with breastfeeding, but using medications with a well-established record is reasonable. Atenolol, as well as the other beta-blocking agent’s nadolol and metoprolol, appear to be concentrated in breast milk. Labetalol and propranolol do not share this property and are preferred agents if a beta-blocker is indicated.

ACE inhibitors should be avoided during pregnancy, as they are associated with fetal renal dysgenesis or death when used in the second and third trimesters, as well as with increased risk of cardiovascular and central nervous system malformations when used in the first trimester.

Diuretics do not cause fetal malformations but are generally avoided in pregnancy, as they prevent the physiologic volume expansion seen in normal pregnancy. They may be used in states of volume-dependent hypertension, such as renal or cardiac disease.

Pregnant Women ~ need to know

Carpal Tunnel Syndrome

Carpal Tunnel Syndrome

Carpal Tunnel Syndrome is a complex of symptoms resulting from compression of the median nerve in the carpal tunnel, with pain and burning or tingling in the fingers and hand, sometimes up to the elbow.

What is Carpal Tunnel ?
Carpal tunnel is a tunnel through the wrist with carpal bones on the bottom and the carpal ligament on top. The median nerve and the flexor tendons (nine in number) run through this tunnel. The flexor tendons help fingers move.
One of the main causes of CTS is swelling or inflammation of the flexor tendons. The swelling increases the pressure within the carpal tunnel, which affects the median nerve function, thus causing CTS symptoms.
Median nerve: one of the major nerves to the hand that controls sensation to the thumb, index, middle and part of the ring finger.

This condition occurs most often in women between 30 to 60 years.

Conditions frequently associated with Carpal Tunnel Syndrome

  • Rhumatoid Arthritis
  • Pregnancy
  • Acromegally
  • Premenstrual syndrome
  • Menopause
  • Diabetes Mellitus
  • Obesity
  • Hypertension
  • Injury or trauma to the wrist – repetitive movement of the wrists, can cause swelling of the tissues and carpal tunnel syndrome. This injury may be from sports such as racquetball and handball, or from sewing, typing, driving, assembly-line work, painting, and writing, use of tools (especially hand tools or tools that vibrate).

Treatment

  • In many cases resting and splinting the wrists for a couple of weeks may be helpful.
  • Diuretics: which get rid of some of the fluid that gets accumulated in the wrist.
  • Anti inflammatory analgesics
  • Injection of Corticosteroids into the wrist.
  • If conservative measures are not successful surgical intervention may be needed. More than 50 % need surgical treatment. This is done by cutting the ligament and thus relieving the pressure on the medial nerve.

Complications – with treatment there are no complications. But in untreated cases the median nerve may be damaged resulting to permanent muscle weakness and muscular atrophy.