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Cystic Fibrosis Gastroenterologist - Dr. Rishi Chadha

Find Cystic Fibrosis clinic in Houston, under the care of Dr. Rishi Chadha in GastroDoxs. Our group offers custom diagnosis, complex therapies and interventions since sweat tests and genetic tests up to CFTR modulators and chest physiotherapy. Breathe easy and live well with customized and caring care.

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Texas Medical Board
Harris County Medical Society
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American Society for Gastrointestinal Endoscopy
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Houston Methodist leading Medicine
HCA Houston Healthcare
Rishi Chadha

About the Expert

Dr. Rishi Chadha, MD is a board‑certified gastroenterologist who specializes in preventive gastroenterology, colorectal cancer screening, and minimally invasive endoscopic procedures. He completed his fellowship at Sunrise Health GME in Las Vegas and previously trained in internal medicine at St. Vincent’s Medical Center in Connecticut.

What Is Cystic Fibrosis?

Cystic fibrosis is a genetic disease of inherited nature, which is brought about by mutations in CFTR gene. It contributes to the secretion of excessively thick and sticky mucus of the lungs and the gastrointestinal tract, which may result in difficulties with breathing, frequent infections, and intestinal absorption disorder.

Common Causes and Risk Factors

  • Inherited mutations in both copies of the CFTR gene (one from each parent)
  • Having a family history of cystic fibrosis
  • No known environmental triggers

Signs and Symptoms

  • Persistent, productive cough with thick mucus
  • Frequent lung infections such as bronchitis or pneumonia
  • Wheezing, shortness of breath, or chest tightness
  • Poor weight gain or growth despite a good appetite
  • Greasy, bulky stools or difficulty digesting fats

How Dr. Rishi Diagnoses Cystic Fibrosis?

Dr. Chadha uses a step-by-step approach:

Medical History and Physical Exam

He examines you, your breathing condition and developmental patterns, family history of CF, and gives you a complete lung and abdominal examination.

Sweat Chloride Test

This is a gold standard test which will help in perspiration of chloride. High levels establish CFTR impairment.

Genetic Testing

A blood or saliva sample is analyzed for CFTR gene mutations. Identifying specific gene variants guides treatment choices.

Lung Function Tests

  • Spirometry - Measures forced vital capacity (FVC) and FEV1 to assess airflow limitation.
  • Body plethysmography - Evaluates lung volumes and airway resistance when needed.

Chest Imaging Studies

The bronchiectasis, mucus plugging or pulmonary injury is seen on chest X-rays or high-resolution CT scans.

Advanced Testing (if needed)

Equivocal cases could be quantified by potential difference test on nasal epithelium.

Rishi Chadha
Treatment

Our Houston team offers a full range of care for cystic fibrosis.

Lifestyle and Diet Support

  • Meal plans with high-calorie content and protein to support growth and energy.
  • Pancreatic enzyme supplementation before meals to improve digestion.
  • Physiotherapy exercises for the chest to help clear thick mucus.
  • Maintain hydration with liquids to thin mucus and aid in its clearance.

Medications

  • CFTR modulators (e.g., ivacaftor) to correct the underlying protein defect.
  • Dornase alfa to thin mucus and improve airway clearance.
  • Antibiotics or inhaled treatments to prevent and manage lung infections.
  • Vitamins A, D, E, and K to address fat-soluble vitamin deficiencies.

Minimally Invasive or Advanced Surgery

  • Bronchoscopy to examine the airways and remove mucus obstructions.
  • Endoscopic sinus surgery to treat chronic sinus congestion.
  • PEG feeding tube placement to provide supplemental nutrition when needed.
Rishi Chadha

About the Author

Dr. Rishi Chadha, MD is a board‑certified gastroenterologist who specializes in preventive gastroenterology, colorectal cancer screening, and minimally invasive endoscopic procedures. He completed his fellowship at Sunrise Health GME in Las Vegas and previously trained in internal medicine at St. Vincent’s Medical Center in Connecticut.

Frequently Asked Questions

What is Cystic Fibrosis?

Cystic fibrosis is a hereditary disease that causes thick and sticky mucus to accumulate in the lungs and digestive system, leading to breathing difficulties and poor nutrient absorption.

Inheritance of Cystic Fibrosis

CF occurs when both parents carry mutations in the CFTR gene. The probability of a child being born with CF is 25% per pregnancy if both parents are carriers.

Typical Signs and Symptoms

Common signs include chronic cough with sputum, frequent lung infections, wheezing, slow weight gain, greasy stools, and difficulty digesting food.

Diagnosis

Dr. Chadha diagnoses CF using sweat chloride tests, genetic screening for CFTR mutations, lung function tests, and imaging such as chest X-ray or CT scan.

Treatment Options

Treatment involves pancreatic enzyme supplements, chest physiotherapy, CFTR modulator drugs, mucus thinners, inhaled antibiotics, and vitamin supplementation.

Lifestyle Modifications

Healthy lifestyle practices include a high-calorie, protein-rich diet, proper hydration, regular chest clearance exercises, and taking pancreatic enzymes prior to meals.

Advanced or Minimally Invasive Interventions

Advanced procedures may include bronchoscopy to open airways, sinus surgery for chronic sinusitis, and PEG tube placement for supplemental feeding.

Follow-up and Care Team

Routine follow-up is recommended every 3-6 months, or sooner during symptom flare-ups, to monitor lung function, nutrition, and overall health. Care is provided by a multidisciplinary team including pulmonologists, dietitians, and respiratory therapists.

Life Expectancy

With modern treatments and comprehensive care, individuals with CF can expect to live into their 40s and beyond, with ongoing improvements in care and therapy.

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