Cystic Fibrosis Management - Symptoms, Diagnosis, & Treatment

Cystic fibrosis (CF) is a genetic condition that affects the lungs, digestive system, and several other organs by causing the production of thick, sticky mucus. While there is currently no cure, the advances in cystic fibrosis treatment and management have improved both life expectancy and quality of life for many.

Early diagnosis, regular monitoring, medications, nutrition, airway clearance, and individualised CF care are all important aspects of management.

Continue reading to find out more about the diagnosis, treatment, and care of CF throughout one’s life.

What Causes Cystic Fibrosis?

Cystic fibrosis develops due to mutations in the CFTR gene, which is important for controlling the transport of salt and water across cells. It is inherited in an autosomal recessive manner. To suffer from CF, a child needs two copies of the defective CFTR gene, one from each parent.

In people with CF, the resulting CFTR protein is not functional, so it can't control the movement of salt and water. The defective CFTR protein causes thick, sticky mucus to build up in the lungs and other organs and block airways.

While the disorder is genetic, there are other environmental and lifestyle factors that can make people with CF more susceptible to worsening of the disease and symptoms.

Symptoms of Cystic Fibrosis

The common cystic fibrosis symptoms include:

• Frequent lung infections, including recurrent pneumonia or bronchitis
• Loose or oily stools
• Difficulty breathing
• Frequent wheezing
• Recurrent sinus infections
• Persistent cough
• Slow growth
• Not gaining weight as expected for their age, even when eating enough and enjoying food.

Those with non-classic CF may have some of the symptoms listed above, as well as:

• Chronic sinusitis
• Nasal polyps
• Abnormal electrolyte levels can cause dehydration or heat stroke.
• Diarrhea
• Pancreatitis
• Unintentional weight loss

Diagnosing Cystic Fibrosis

The diagnosis of CF is usually made by doing a physical exam, taking a history, and ordering specific tests.

1. Newborn Screening

During newborn screening, a healthcare professional collects a few drops of blood from the baby's heel. A blood test is done to check for high levels of a chemical called immunoreactive trypsinogen (IRT), which is released by the pancreas, and can be a sign of CF.

IRT levels are also raised in cases of premature birth or a stressful birth; however, further testing may be necessary for a diagnosis.

2. Sweat Test

A sweat test is usually done when the baby is over 2 weeks old. In a sweat test, pilocarpine is applied to the skin using a mild electrical current to stimulate sweating, and the sweat is collected to measure chloride levels. An elevated amount of salt in the sweat is a possible sign of cystic fibrosis. The Cystic Fibrosis Foundation accredits testing centres that will ensure accurate and reliable results.

3. Genetic Testing

Genetic testing may be recommended for babies to determine the cause of their CF and to uncover the CFTR (Cystic Fibrosis Transmembrane Conductance Regulator) mutations caused by the disease. Diagnosis is confirmed with genetic testing when necessary, in addition to the IRT results.

4. Testing in Older Children and Adults

Diagnostic testing may also be recommended for children and adults who were not screened at birth. Healthcare providers may suggest sweat and genetic testing if a person experiences:

• Recurrent pancreatitis
• Nasal polyps
• Chronic sinus infections
• Repeated lung infections
• Bronchiectasis
• Male infertility

How to Prepare for Lung Transplantation in Advanced Cystic Fibrosis?

Unless surgery is being considered for the treatment of advanced disease, no special preparation is required for the treatment of cystic fibrosis.

In preparation for transplant surgery:

• Diagnostic testing is performed, such as imaging tests, blood tests, and lung function tests.
• If the patient is found to be eligible, he or she might be added to the transplant waiting list.
• Healthcare professionals may suggest other options, such as pulmonary rehabilitation and a high-calorie diet, during waiting time.
• Medications are often prescribed to help manage symptoms.
• Following all medical recommendations carefully can help reduce complications and improve the chances of successful treatment.

Treatment of Cystic Fibrosis

Modern treatment and management of cystic fibrosis involves a comprehensive, multidisciplinary approach. The improvements in care now include early diagnosis, infection prevention, nutrition, airway clearance, and therapies that address the underlying defect in the CFTR protein.

Proper CF treatment and management aim to extend life, minimise complications, keep the lungs healthy, and make life as normal as possible.

Treatment involves:

• Airway clearance techniques
• Anti-inflammatory therapies
• Anti-infective medications
• Pulmonary rehabilitation
• Oxygen therapy
• Gene therapy research
• Lung transplantation in advanced disease

Medicines for Treating Cystic Fibrosis

Medications can be used to help maintain lung function, control infections, improve breathing, remove mucus, and increase the activity of the CFTR protein.

1. Antibiotics

Antibiotics are given to prevent or treat lung infections and to ease lung function. They can be administered orally, as a spray, or intravenously (IV).

2. Anti-Inflammatory Medicines

Anti-inflammatory drugs, such as ibuprofen and steroids, may be used to lower inflammation, which can cause other complications and damage to the lungs.

3. Bronchodilators

Bronchodilators relax and open up the airways so that breathing is easier. They are typically used as inhalers.

4. Mucus Thinners

Medications that thin mucus to help drain it from the airways. They are typically taken by inhaling them.

5. CFTR Modulators

CFTR modulators are drugs that are meant to help a defective CFTR protein work properly. These drugs can improve lung function and decrease the likelihood of complications.

Genetic testing is often needed before treatment is started, as CFTR modulators work with only some types of gene mutations.

Possible side effects include:

• Temporary aggravation of breathing complaints.
• Stuffed up nose/sinus congestion
• Headache
• Abdominal pain
• Anxiety or depression in some individuals

Therapies that modulate CFTR are available, such as:

• Elexacaftor-tezacaftor-ivacaftor (approved for eligible adults and children 2 years of age and older with certain mutations)
• Ivacaftor (approved for eligible adults and children as young as 4 months).
• Lumacaftor-ivacaftor (approved for people 1 year and older)
• Tezacaftor-ivacaftor

Managing Cystic Fibrosis

Successful cystic fibrosis management requires a multidisciplinary approach and a team comprising:

• Pulmonologists
• Pharmacists
• Respiratory therapists
• Physical therapists
• Dietitians
• Nurses
• Social workers
• Mental health coordinators
• Program coordinators

Treatment at an accredited CF Care Centre can help ensure you have access to specialised expertise and coordinated treatment.

Regular monitoring and follow-up are necessary to avoid complications and may involve:

• Blood tests
• Bone mineral density testing
• Glucose monitoring
• Pancreatic function testing
• Respiratory cultures
• Ultrasound examinations
• Chest CT scans
• Chest X-rays

Additional investigations such as colonoscopy or lung biopsy may be recommended in selected patients based on age, symptoms, complications, or clinical indications.

Lifestyle Measures for Cystic Fibrosis Management

Living a healthy lifestyle is a key part of the comprehensive guidelines for the management of CF and long-term control of the disease.

1. Infection Prevention

Good hygiene and keeping up to date with the recommended vaccinations can help lower the chances of infection and associated complications.

2. Nutritional Support

A diet tailored for CF may also encourage high-calorie, high-sodium, nutrient foods to help support overall health and maintain a healthy weight.

3. Physical Activity

Mucus clearance, physiotherapy management strategies, and regular exercise can help improve lung function and overall fitness while helping to clear mucous.

Many people with CF can live longer, healthier, and more active lives with continued medical treatment, lifestyle changes, and following the CF management guidelines.

Reader Information: This article is intended for educational and informational purposes only and should not be considered medical advice, diagnosis, or treatment. Cystic fibrosis is a complex genetic condition that requires individualized medical care. Treatment options, including medications, airway clearance techniques, nutritional support, and CFTR modulators, may not be suitable for everyone and should be prescribed and monitored by a qualified healthcare professional. Always consult your doctor, pulmonologist, or cystic fibrosis care team for guidance regarding symptoms, diagnosis, treatment decisions, and ongoing management.

FAQs

What is cystic fibrosis?

Cystic fibrosis (CF) is a genetic condition inherited from parents. This results in the build-up of thick, sticky mucus in the lungs, digestive tract, and other organs, causing breathing difficulties, infections, or digestive problems.

How is cystic fibrosis diagnosed?

Several techniques are used to diagnose cystic fibrosis in babies. Newborn screening, sweat chloride testing, genetic testing, physical examination, and a review of symptoms and medical history are useful in diagnosing CF.

What are the most common symptoms of cystic fibrosis?

Common symptoms are: frequent lung infections, persistent cough, wheezing, difficulty breathing, oily stools, slow growth, sinus infections, and difficulty gaining weight, despite being quite hungry.

What causes cystic fibrosis?

The CFTR gene is mutated in people with CF. If an individual inherits two faulty copies of the gene, one from each parent, he or she will develop the condition.

What is the role of CFTR modulators in cystic fibrosis treatment?

CFTR modulators help improve the function of defective CFTR proteins. These drugs help improve lung function, reduce the risk of complications, and enhance quality of life for patients with a specific CFTR gene mutation.

Can cystic fibrosis be cured?

There is no cure for CF currently. Progress in the treatment and management of CF, however, can help control symptoms, minimise complications and help extend life expectancy.

What lifestyle changes can help manage cystic fibrosis?

Cystic fibrosis can be managed by practising good hygiene, keeping up to date with all vaccinations, a healthy diet, and regular exercise. Following prescribed medications and airway clearance therapy can help too.

Why is early diagnosis important for cystic fibrosis?

Early diagnosis means early treatment. This helps to prevent complications, maintain nutrition levels, preserve lung function, and promote improved long-term health.