Sickle cell disease
Stem
A 9-year-old boy, 28 kg, with homozygous sickle cell disease (HbSS), is scheduled for elective laparoscopic cholecystectomy for symptomatic gallstones, expected to take about 90 minutes. He takes hydroxyurea, had acute chest syndrome at age 6, and was last admitted for a pain crisis four months ago. His baseline hemoglobin is 7.8 g/dL and his room-air saturation 97%.
Question
How will you prepare him for surgery and manage his anesthetic?
Ideal answer
HeadlinePrevent sickling and its two big complications, a pain crisis and acute chest syndrome, starting with hematology: a general anesthetic over an hour means I transfuse beforehand.1
- Simple transfusion to about 10 g/dL, never above 12, arranged with hematology before the day of surgery, because his hemoglobin is below 9.2
- Blood matched for Rh C and E and Kell, not just ABO and RhD, to reduce alloimmunization.1
- CBC with reticulocytes within 48 hours of surgery,2 and I ask about recent chest symptoms.
- Intravenous fluids while fasting, warmth, generous oxygen, because hypoxemia, hypovolemia and untreated pain each trigger sickling;2 moderate insufflation pressures, normocapnia, and multimodal analgesia: port local anesthetic, acetaminophen, opioids titrated to effect.
- Incentive spirometry, early mobilization and supplemental oxygen afterward, watching for fever, chest pain or falling saturation over the next few days.
Breaking down the answer
- A conditional recommendation — ASH suggests preoperative transfusion over none for surgery under general anesthesia lasting more than an hour.1 Changes if: a short minor procedure.
- Target, not just "transfuse" — the ASH guideline suggests a hemoglobin of 9–10 g/dL; in the TAPS trial, patients below 9 had a simple transfusion to 10.2 For high-risk surgery the goal shifts to HbS below 30%, often needing exchange transfusion.2
- Prophylactic extended matching — ASH recommends Rh (C, E or C/c, E/e) and K.1
- The full trigger list — hypoxemia, hypothermia, hypovolemia, infection, pain and stress all precipitate crisis; hydration, warmth and oxygen are the countermeasures.2
- No tourniquet if avoidable — tourniquets carry a risk of vaso-occlusive crisis in sickle cell disease.3
- Preoperative workup — transcranial Doppler within 12 months for HbSS, and a chest radiograph only for new respiratory symptoms.2
Follow-up question
On the second postoperative day, he has a temperature of 38.6 °C, right-sided chest pain, a respiratory rate of 34 and a saturation of 89% on room air. The chest radiograph shows a new right lower lobe infiltrate. What do you do?
Follow-up answer
HeadlineAcute chest syndrome: fever, chest pain, hypoxemia and a new infiltrate after abdominal surgery. I call hematology and the ICU and tell his parents.
Postoperative acute chest syndrome is reported in about 3% of children with sickle cell disease.2 I give oxygen to restore his saturation, incentive spirometry, careful fluids without overload, broad-spectrum antibiotics, and enough analgesia to let him breathe deeply without oversedation. If he continues to deteriorate, red cell exchange is the treatment for severe acute chest syndrome, rather than a simple transfusion.4 I reassess his work of breathing, saturation and hemoglobin frequently, and prepare for noninvasive or invasive ventilation if he tires.
Pitfalls that cost points
- Saying "transfuse to an HbS below 30%" for every operation without considering risk.
- Transfusing above a hemoglobin of 12 g/dL and raising viscosity.
Rapid-fire
Q: What postoperative stroke and 30-day mortality rates are reported in children with sickle cell disease? A: About 0.2% each.2
Q: When is a hemoglobin profile needed before surgery? A: Within 3 days if the plan targets HbS below 30%.2
Q: Why extended antigen matching? A: Many are transfused repeatedly, and ASH recommends red cells profiled beyond ABO and RhD.4
Q: When does ASH favor exchange over simple transfusion? A: In severe complications such as severe acute chest syndrome.4
Numbers to know
| Item | Value |
|---|---|
| Transfuse before GA lasting | More than 1 h1 |
| Hemoglobin target | ~10 g/dL; avoid above 122 |
| HbS target for high-risk surgery | Below 30%2 |
| Postop acute chest syndrome (children) | ~3%2 |
| CBC with reticulocytes | Within 48 h of surgery2 |
| Transcranial Doppler (HbSS) | Within 12 months2 |
Links
- laparoscopy, Pediatric fluids, blood and allowable loss, Transfusion reactions, TRALI and TACO, ARDS and lung-protective ventilation, PCA and multimodal analgesia
- ASH 2020 guidelines for sickle cell disease: transfusion support
Sources
- 1.Transfusion support in sickle cell disease: ASH 2020 guidelines (news summary) · Medical Dialogues, 2020 · medicaldialogues.inSecondary summary quoting ASH recommendation wording; the primary (Chou et al., Blood Adv 2020;4:327-355) could not be opened this session.
- 2.Preoperative Transfusion and Sickle Cell Disease in the Pediatric Patient · APSF Newsletter, 2024 · apsf.orgBaijal, Dalal, Kanjia; APSF Newsletter June 2024, pp. 67-69.
- 3.Perioperative tourniquet use · OpenAnesthesia · openanesthesia.org
- 4.ASH Clinical Practice Guidelines on Sickle Cell Disease: Transfusion Support · American Society of Hematology, 2020 · hematology.org
Facts on this page were checked against these sources on Oct 15, 2026. Guidelines change; confirm doses against current institutional protocols.