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Cystic Fibrosis
At GastroDoxs in Houston, Dr. Scott offers expert, personalized cystic fibrosis care. Utilizing advanced diagnostics-sweat tests, genetic screening, lung imaging-and tailored treatments, his multidisciplinary team supports nutrition, breathing exercises, medications, and innovative therapies to enhance health and quality of life.
Dr. Scott Liu, MD, is a board-certified gastroenterologist with over six years of experience and a background in military medicine. He earned his medical degree from the University of Maryland, Baltimore, completed his Internal Medicine residency at Naval Medical Center Portsmouth, and finished his Gastroenterology fellowship through the National Capital Consortium. Dr. Liu provides comprehensive care for a broad range of digestive conditions, including abdominal pain, acid reflux, liver disease, chronic diarrhea, and colon cancer screening. He is a member of the American College of Gastroenterology and is known for his disciplined, patient-focused approach and clear communication.
Common Causes and Risk Factors
Autosomal recessive inheritance: two faulty CFTR genes (one from each parent)
Parents who are carriers of CFTR gene mutations
Family history of cystic fibrosis
Carrier couples have a 25% chance of an affected child with each pregnancy
Incidence in North America: about 1 in 3,500 births
Signs and Symptoms
Persistent cough or wheezing
Frequent lung infections (bronchitis, pneumonia)
Thick, sticky mucus in airways leading to breathing difficulties
Poor weight gain or slow growth despite good appetite
Salty-tasting skin when kissed or touched
Greasy, bulky stools and difficulty digesting fats and proteins
Fatigue and reduced exercise tolerance
How Dr. Scott Diagnoses This Condition?
Dr. Scott uses a step-by-step approach:
Medical History and Physical Exam
He reviews your pain history-location, intensity, timing (relation to meals), and any aggravating or relieving factors. He'll also assess risk factors such as NSAID use, alcohol intake, family history, and previous GI issues.
Blood Tests
We check complete blood count (CBC) for anemia or infection, liver enzymes (AST, ALT), pancreatic enzymes (amylase, lipase), and H. pylori antibodies or antigens to rule out ulcers, gastritis, pancreatitis, or biliary problems.
Imaging Studies
Abdominal ultrasound to evaluate the gallbladder, liver, pancreas, and biliary tree for stones or inflammation.
Upper endoscopy (EGD) to directly visualize the esophagus, stomach, and duodenum and obtain biopsies if ulcers or gastritis are suspected.
CT scan of the abdomen when detailed cross-sectional imaging is needed for suspected masses, perforations, or complicated pancreatitis.
Advanced Testing (if needed)
For persistent or unclear cases, specialized studies-such as gastric emptying scans, 24-hour pH monitoring, esophageal manometry, or targeted biopsies-may be performed to diagnose motility disorders, reflux, or microscopic inflammation.
Treatment
Our Team offers a full range of care for cystic fibrosis.
1. Lifestyle and Diet Support
High-calorie, nutrient-rich meal plans to support growth and energy
Pancreatic enzyme supplements to aid digestion of fats, proteins, and amino acids
Salt supplementation to maintain electrolyte balance, especially in Houston's heat
Daily chest physiotherapy and breathing exercises to mobilize and clear mucus
2. Medications
CFTR modulators to correct the underlying protein defect
Bronchodilators to open airways and improve airflow
Mucolytics to thin and loosen thickened mucus
Targeted antibiotics to prevent and treat recurrent lung infections
3. Minimally Invasive or Advanced Procedures
Bronchoscopy for direct airway inspection and mucus clearance
Nebulizer-delivered therapies for efficient lung drug delivery
Access to clinical trials for cutting-edge CF treatments and modulators
Dr. Scott Liu, MD, is a board-certified gastroenterologist with over six years of experience and a background in military medicine. He earned his medical degree from the University of Maryland, Baltimore, completed his Internal Medicine residency at Naval Medical Center Portsmouth, and finished his Gastroenterology fellowship through the National Capital Consortium. Dr. Liu provides comprehensive care for a broad range of digestive conditions, including abdominal pain, acid reflux, liver disease, chronic diarrhea, and colon cancer screening. He is a member of the American College of Gastroenterology and is known for his disciplined, patient-focused approach and clear communication.
Frequently Asked Questions
What is the average life expectancy with cystic fibrosis?
Thanks to advances in care and new treatments, many people with CF now live into their 40s and beyond.
How does CF affect amino acids?
Cystic fibrosis can block the pancreas, making it hard to absorb proteins and amino acids. Pancreatic enzyme pills help with proper digestion.
What is included in CF treatment?
Treatment typically includes airway clearance techniques, CFTR-modulating medications, enzyme supplements, nutrition support, and regular checkups.
Does exercise help with CF?
Yes. Daily physical activity helps loosen and clear mucus from the lungs, improving breathing and overall lung function.
How common is CF in Houston?
The prevalence in Houston mirrors national rates-approximately one in every 3,500 births. Early newborn screening enables faster diagnosis and care.
Are there new treatments for CF?
Yes. CFTR modulators and ongoing clinical trials offer cutting-edge therapies that target the underlying protein defect for better outcomes.
Should I consider genetic counseling?
Absolutely. If CF runs in your family or you're planning a pregnancy, genetic counseling can help you understand carrier risks and family planning options.
