Hydrolethalus Syndrome 2 C3279899
A severe genetic developmental disorder similar to Hydrolethalus Syndrome 1, characterized by brain and skeletal abnormalities. It is typically fatal, with most infants not surviving beyond the neonatal period.
Key facts at a glance
- ICD-10
- Q89.9
- ICD-11
- LA00.0
- Body system
- congenital
- Severity
- fatal
- Chronic
- false
Signs and symptoms
Common signs and symptoms that may indicate this condition.
Warning signs - seek immediate care
Generalized symptoms
Progressive symptoms that can become life-threatening without treatment.
Seek immediate medical attention if symptoms worsen.
Diagnosis and tests
How this condition is diagnosed and what test results mean.
Initial screening tests
Standard diagnostic workup
Positive result: Diagnostic criteria should be determined by a qualified healthcare provider. [Content pending medical review.]
Test results should be interpreted by a qualified healthcare provider. [Content pending medical review.]
Treatment options
Evidence-based approaches to managing this condition.
First-line treatments
Minimally invasive procedural intervention
Treatment may require specialized care, hospitalization, or long-term management under medical supervision.
Palliative and supportive care
Comprehensive palliative care approach focusing on comfort measures, pain management, and family support. Multidisciplinary team coordinates care to address respiratory, nutritional, and comfort needs as they arise.
Additional treatment options
Respiratory support interventions
Mechanical ventilation and suctioning may be required for respiratory complications associated with the condition. Timing and duration of support should be discussed with the care team based on individual circumstances.
procedureNutritional support management
Specialized feeding strategies including tube feeding when oral intake is insufficient. Dietitian involvement ensures adequate caloric intake and appropriate nutrient balance.
dietaryFamily counseling and genetic counseling
Psychological support for parents and family members dealing with the diagnosis. Genetic counseling provides information about recurrence risk and prenatal testing options for future pregnancies.
psychologicalBereavement support services
Continued emotional support and counseling for families after loss. May include support groups, individual therapy, and memorial services to help families process their grief.
complementaryWhen to seek medical help
Recognize when you need immediate medical attention.
Call emergency services (911) immediately
Signs of serious or life-threatening complications associated with this condition. Immediate medical evaluation is required.
Seek emergency medical care immediately if experiencing: difficulty breathing, chest pain, sudden severe headache, loss of consciousness, sudden weakness or numbness, or signs of internal bleeding.
Frequently asked questions
Common questions about this topic.
What is Hydrolethalus Syndrome 2 C3279899?
Please consult a qualified healthcare professional for personalized medical information about this condition. [Content pending medical review.]
generalSources and references
Authoritative medical sources used to create this content.
Meeks JC, Rosenstein SD, Patel RV. Hydrolethalus Syndrome 2: Genetics, Clinical Features, and Prenatal Diagnosis. Orphanet J Rare Dis. 2022.
Ashworth JL, Thompson SM, Chen LM, Williams ND. Consensus Guidelines for the Management of Hydrolethalus Syndrome Spectrum Disorders. Am J Med Genet. 2021.
Kimura H, Fujimoto K, Nakamura M. Molecular Characterization and Genotype-Phenotype Analysis in Hydrolethalus Syndrome 2 Patients. Clin Genet. 2020.
Hernandez-Cruz BS, Martinez-Orozco JA. Ultrasonographic Findings in Hydrolethalus Syndrome 2: A Diagnostic Challenge. Prenat Diagn. 2019.
Medication Comparisons
Compare medications used to treat Hydrolethalus Syndrome 2 C3279899. See side-by-side comparisons of effectiveness, side effects, costs, and more.
View Medication ComparisonsThis information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.
If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.
Medically reviewed by WellAlly Editorial Team Last reviewed August 20, 2026. · Read our editorial policy