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Book of Medical Disorders in Pregnancy - Tintash

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normal <strong>in</strong> four to six weeks after<br />

delivery.<br />

Epidemiology:<br />

Body <strong>of</strong> a healthy adult woman conta<strong>in</strong>s<br />

3,500-4,500mg iron <strong>of</strong> which 75% is <strong>in</strong><br />

red blood cells as hemoglob<strong>in</strong>, 20% as<br />

ferrit<strong>in</strong> <strong>in</strong> bone marrow and reticuloendothelial<br />

system and 5% <strong>in</strong> muscles<br />

and enzyme systems. Nearly all <strong>of</strong> iron<br />

<strong>in</strong> red blood cells is recycled as they are<br />

replaced every 100-120 days. Normal<br />

loss is 1mg iron from death <strong>of</strong> epithelial<br />

cells plus an average <strong>of</strong> 1mg daily from<br />

monthly menstrual loss. Average<br />

woman’s diet <strong>in</strong> developed world<br />

provides 12mg iron daily, <strong>of</strong> which 14-<br />

20% is absorbed so a balance is<br />

ma<strong>in</strong>ta<strong>in</strong>ed.<br />

However, <strong>in</strong> develop<strong>in</strong>g countries with a<br />

ma<strong>in</strong>ly vegetarian diet iron levels are<br />

low because <strong>of</strong> the relative lack <strong>of</strong> iron<br />

<strong>in</strong> the diet and the ability <strong>of</strong> phytate <strong>in</strong><br />

cereals to <strong>in</strong>terfere with iron absorption.<br />

Also, <strong>in</strong> many countries, very high level<br />

<strong>of</strong> <strong>in</strong>festation with hookworm, which<br />

causes considerable fecal blood loss?<br />

Presence <strong>of</strong> occult blood <strong>in</strong> coeliac<br />

disease <strong>in</strong> pregnancy has a strong association<br />

with anaemia.<br />

The bone marrow aspirate shows normoblastic<br />

reaction with a slight <strong>in</strong>crease<br />

<strong>in</strong> the number <strong>of</strong> plasma cells and<br />

megakaryocytes.<br />

Cl<strong>in</strong>ical features:<br />

Features which are common to all<br />

anemias <strong>of</strong> pregnancy <strong>in</strong>clude tiredness,<br />

listlessness, headache and bouts <strong>of</strong><br />

gidd<strong>in</strong>ess. There may also be anorexia<br />

and <strong>in</strong>digestion, due to hypochlorhydria<br />

which develops sec-ondary to nutritional<br />

deficiency states. Cardiac output is<br />

<strong>in</strong>creased and systolic ejection murmur<br />

can be heard over the base <strong>of</strong> the heart.<br />

A third heart sound can sometimes be<br />

heard at the apex <strong>in</strong> these cases. This<br />

sound is due to rapid diastolic fill<strong>in</strong>g <strong>of</strong><br />

the left ventricle. In patients with<br />

organic heart disease, there may be signs<br />

<strong>of</strong> cardiac failure. Ectopic beats are a<br />

frequent phenomenon which is <strong>of</strong>ten<br />

noted as palpitations. Slight edema <strong>of</strong><br />

the ankles may be present, when severe<br />

anemia with megaloblastic picture is<br />

present. This may sometimes be accompanied<br />

by hypertension and mild<br />

album<strong>in</strong>uria, which disappears when the<br />

anemia is corrected. Incidence <strong>of</strong><br />

premature labor is more <strong>in</strong> these cases. If<br />

anemia is severe, fetal anoxia may result<br />

<strong>in</strong> <strong>in</strong>trauter<strong>in</strong>e death <strong>of</strong> the fetus.<br />

Iron deficiency Anaemia<br />

Anaemia Normal Blood<br />

Fig 1.1: Shows hypochromic anaemic<br />

red cells <strong>in</strong> the left picture and normal<br />

red cells <strong>in</strong> the right picture<br />

It has been reported that uter<strong>in</strong>e <strong>in</strong>ertia<br />

may be <strong>in</strong>creased and labor prolonged,<br />

but the reason for this is not known.<br />

Incidence <strong>of</strong> puerperal <strong>in</strong>fection and<br />

venous thrombosis is <strong>in</strong>creased.<br />

Common symptoms:<br />

Mild Anaemia:<br />

Decreases capacity to do physical and<br />

mental work. Reduces concentration,<br />

attention and, memory affect<strong>in</strong>g school<br />

2

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