Blood Bank & Transfusion Support

How blood reaches a patient

Blood cannot be manufactured. Every unit transfused in this district came from a person who sat in a chair for ten minutes and gave it. That single fact shapes everything about how transfusion works, including why hospitals ask families to arrange replacement donors.

SIMS arranges blood and blood components for surgery, obstetric haemorrhage, trauma, severe anaemia, gastrointestinal bleeding, cancer treatment and thalassaemia, working with licensed blood banks and storage arrangements as required by law. The treating consultant decides what component is needed — whole blood, packed red cells, fresh frozen plasma or platelets — because transfusing more than is required carries its own risk.

Anaemia is unusually common in this region, particularly among women and among families whose diet is limited. A transfusion corrects a number; it does not treat the cause. Whenever a patient is transfused for anaemia, the reason for the anaemia is investigated as well.

Arranging blood for a patient

The transfusion desk guides families through this, and the emergency department does not wait for paperwork when a patient is bleeding.

1. The treating doctor raises a requisition

   The requisition states the patient's details, the component required, the number of units and the urgency. Consent for transfusion is taken from the patient or an attendant, with the reason and the risks explained.

2. A sample is taken for grouping and cross-matching

   The patient's blood group is confirmed and the donor unit is tested against the patient's serum for compatibility. Identity is checked twice before the sample is drawn, because a mislabelled tube is the most dangerous error in transfusion medicine.

3. The family arranges replacement donors where asked

   For planned surgery and non-emergency transfusion, families are commonly asked to bring donors to replace the units used. This keeps the shared supply from running down. In a genuine emergency, blood is issued first and replacement is organised afterwards.

4. The unit is issued and checked at the bedside

   Two staff members verify the patient's identity, the unit number, the blood group and the expiry against the requisition immediately before the transfusion starts.

5. The patient is monitored during and after transfusion

   Observations are recorded before the transfusion, during the first fifteen minutes when most serious reactions appear, and periodically afterwards. Any reaction is reported and investigated.

Who can donate blood

Donation is safe for a healthy adult and the volume is replaced by the body within a day or two. General eligibility follows national blood transfusion guidelines; the medical officer at the donation centre makes the final decision.

• Age between 18 and 65 years, in good general health
• Weight at least 45 kg, with haemoglobin at or above the level checked on the day
• At least three months since your last whole blood donation
• No fever, cough, cold, diarrhoea or antibiotic use in the preceding days
• No alcohol in the previous 24 hours, and a proper meal before donating — never donate on an empty stomach
• Not pregnant, not breastfeeding, and not within the period following childbirth or abortion
• Not menstruating heavily, and not currently anaemic
• No tattoo, piercing, ear-piercing or major surgery within the deferral period advised at the centre
• Not deferred for malaria, jaundice, tuberculosis treatment, uncontrolled diabetes on insulin, heart disease, epilepsy or a bleeding disorder
• Never donate to obtain a free test for HIV, hepatitis or any other infection — if you want a test, ask for a test

Platelets, dengue and the myth of the platelet count

Every monsoon and post-monsoon season, families across Anantapur district arrive asking for a platelet transfusion because a dengue report showed a low count. It is worth being precise about this, because unnecessary platelet transfusion carries risk and consumes a scarce resource that a leukaemia patient may need that same night.

In dengue, the platelet count falls and then recovers on its own in the great majority of patients. Transfusion is guided by bleeding and by the clinical picture, not by the number alone. A patient with a low count who is stable, drinking fluids and not bleeding usually needs observation, fluids and monitoring — not platelets.

What genuinely matters in dengue is fluid balance and the warning signs: severe abdominal pain, persistent vomiting, bleeding from the gums or nose, black stools, restlessness, cold clammy skin, or a sudden drop in temperature with worsening condition. Those need immediate hospital review, whatever the platelet count says. Papaya leaf extract, kiwi fruit and similar remedies do not replace that assessment.

Common questions