Understanding Different Types of Clinical Trials

When we talk about clinical trials, we often hear terms like "randomised" or "double-blind," but what do these mean — and how strong is the evidence they produce?

Here's a brief guide:

1. Observational Study

  • Researchers observe patients without changing treatments.
  • Example: watching CPA patients on current antifungals to track outcomes.
  • Power: Weak to moderate — shows correlation but not cause.

2. Open-Label Trial

  • Everyone knows which treatment they’re getting.
  • Useful for testing safety or feasibility.
  • Power: Moderate — can be biased, but still useful.

3. Randomised Controlled Trial (RCT)

  • Participants are randomly assigned to one treatment or another.
  • Helps ensure fairness and balance between groups.
  • Power: Strong — considered the gold standard for testing effectiveness.

4. Double-Blind RCT

  • Neither patient nor doctor knows who is getting the real treatment or the control.
  • Reduces bias even further.
  • Power: Very strong — this is the highest standard for reliable evidence.

5. Feasibility or Pilot Trial

  • A smaller version of a full RCT, used to test if a larger trial is possible.
  • Checks things like recruitment, adherence, and side effects.
  • Power: Lower for proving treatment works, but crucial for planning a full trial

by GAtherton

Living with Aspergillosis: What You Don’t See

An invisible illness that changes everything.

What is Aspergillosis?

Aspergillosis is a long-term lung condition caused by a common mould (Aspergillus) found in the environment. For most people it’s harmless, but in some it causes serious illness, lung damage, and long-lasting symptoms. It can come in different forms such as:

  • Chronic Pulmonary Aspergillosis (CPA)
  • Allergic Bronchopulmonary Aspergillosis (ABPA)
  • Aspergilloma (fungal ball)

These are not contagious, but they are serious.

Why It's Hard to See

People with aspergillosis may look well but feel incredibly unwell. This condition is invisible but can cause:

  • Constant breathlessness
  • Severe fatigue
  • Chest pain or coughing (sometimes with blood)
  • Frequent infections
  • Side effects from long-term antifungal or steroid treatments

Patients may use walkers, oxygen, or mobility aids some days and not others. That doesn’t mean they are better or faking. This is a fluctuating illness.

"But You Look Fine..."

Looks can be deceiving. People with aspergillosis are often battling infection, inflammation, medication side effects, and mental strain every day.

Please don’t assume someone is well because they don’t look ill. If they cancel plans, rest more than others, or seem tired, it’s not laziness — it’s medical reality.

How You Can Support

  • Listen without judgement
  • Believe what they tell you about how they feel
  • Be flexible and patient
  • Offer practical help (shopping, transport, etc.)
  • Understand their limits can change daily

Final Words

Aspergillosis is an invisible disability. Your understanding makes an enormous difference. With the right support, people with this condition can live meaningful and dignified lives.

To learn more, visit: https://aspergillosis.org  https://www.aspergillosistrust.org/socialmedia

Thank you for taking the time to understand what you can’t always see.

by GAtherton

🏊‍♂️ Indoor Pools & Aspergillosis — What You Need to Know

✅ Generally Safe IF:

  • The pool is well-ventilated and well-maintained

  • Chlorination levels are monitored and stable

  • There's no visible mould or damp damage in the building

  • You are not severely immunocompromised or recovering from surgery

In stable CPA or ABPA patients who are not on high-dose immunosuppressants, light swimming in clean indoor pools can be beneficial for:

  • Mild exercise

  • Airway clearance

  • Improving lung capacity and mood

⚠️ Be Cautious If:

 

Situation Why It Matters
You’re on high-dose steroids or immunosuppressants Increased infection risk from fungal or bacterial spores
The pool area is damp, mouldy, or poorly ventilated Aspergillus spores may thrive in humid corners and vents
You have ongoing lung infection or unstable aspergillosis Exercise and exposure may worsen symptoms
You’re prone to bronchospasm or chlorine sensitivity Chlorinated air may trigger wheezing or chest tightness

🛑 Avoid if:

  • The changing rooms or walls smell musty or show black mould

  • There is visible condensation, damp, or poor ventilation

  • You’ve had recent invasive infection, surgery, or hospitalisation

  • You have uncontrolled ABPA or CPA with frequent exacerbations

✅ Tips for Safer Swimming:

  • Visit during off-peak hours (less aerosolised load)

  • Avoid hot tubs, saunas, and steam rooms connected to the pool

  • Shower immediately after swimming

  • Wear flip-flops to reduce risk of fungal skin infections

  • If breathless or chesty after swimming, hold off and speak to your respiratory team

🧾 Summary:

Yes, swimming in indoor pools can be safe for many with aspergillosis, but only if the environment is clean, dry, and well-maintained — and the patient is not severely immunosuppressed or unstable. Always discuss with your specialist before starting.

by GAtherton

🛁 Outdoor Hot Tubs & Aspergillosis — The Key Issues

For someone with aspergillosis (especially chronic pulmonary aspergillosis or ABPA), **outdoor hot tubs are usually not recommended — or at the very least, should be approached with serious caution.

❗ 1. Fungal Exposure Risk (including Aspergillus):

  • Hot tubs — even well-maintained ones — are prone to harbouring fungal spores, biofilms, and moulds, especially in:

    • Filters and jets

    • Under the covers and around the edge

    • The aerosolised mist from bubbles and heat

  • Aspergillus and other moulds can thrive in warm, damp, organic-rich environments — exactly what a hot tub is.

❗ 2. Risk of “Hot Tub Lung” (hypersensitivity pneumonitis):

  • Caused by inhalation of waterborne organisms, especially Mycobacterium avium and fungal spores.

  • Can mimic or worsen chronic lung conditions and is dangerous in someone with underlying aspergillosis.

⚠️ 3. Chlorine or Bromine May Not Be Enough:

  • While disinfection kills many bacteria, fungal spores and biofilm-forming organisms can persist — especially in jets or hard-to-reach areas.

🟡 If a patient insists on using a hot tub, they should:

  • Only use tubs maintained to hospital-grade cleanliness standards (rare in private settings)

  • Avoid if there's any cover of mould, visible residue, or musty smell

  • Use during off-peak times to reduce aerosol exposure

  • Avoid placing head near water jets or breathing in rising steam

  • Limit time in the tub and shower immediately afterward

  • Consider wearing a high-grade mask while near the tub when not submerged

✅ Safer Alternatives for Relaxation:

  • Dry saunas (if tolerated)

  • Warm baths indoors in clean, ventilated bathrooms

  • Gentle hydrotherapy pools with strict water quality controls

🔍 Summary:

For someone with aspergillosis, outdoor hot tubs are generally not recommended due to the risk of fungal aerosol exposure and potential lung flare-ups. Even “clean” tubs can harbour hidden risks.

by GAtherton

✅ Best Practice for Taking Blood Pressure at Home

Taking BP at home can be very helpful, but only if it's done correctly and consistently. Here's how to make sure the readings are accurate and meaningful:

1. Use a Validated BP Monitor

  • Choose an upper arm cuff, not a wrist or finger monitor.

  • Make sure the cuff is the right size for the arm (not too tight or loose).

  • Devices that are clinically validated (e.g., British and Irish Hypertension Society, BHF or NICE recommended) are best.

2. Timing Matters

  • Take readings at the same time(s) each day — typically:

    • Morning (before meds, breakfast, and activity)

    • Evening (before bed)

  • If taking just once daily, do it in the morning.

3. Prepare Properly:

  • Sit quietly for 5 minutes before measuring.

  • No coffee, smoking, or exercise for 30 minutes beforehand.

  • Sit upright, back supported, feet flat on the floor (no crossing legs).

  • Rest the arm on a table at heart level.

  • Be calm and quiet (no talking or watching TV).

4. How to Measure:

  • Take 2 readings, 1 minute apart.

  • If they’re very different, take a 3rd and record the average of the closest two.

5. Record the Results:

  • Keep a written or digital log (eg. Blood_Pressure_Diary):

    • Date & time

    • Reading (systolic/diastolic)

    • Pulse

    • Any symptoms (e.g. dizzy, headache, breathless)

Example:

Tue 8:00am – 132/78, pulse 72 – Felt fine

❗ Extra Tips for Reliable Results:

  • Avoid taking BP when in pain or upset — it can falsely elevate the reading.

  • Don’t obsessively repeat it all day (this can cause "white coat at home" effect).

  • Show the log to the GP/consultant — ideally with at least 5–7 days of morning & evening readings.

by GAtherton

🟩 Patient Advice for Starting Posaconazole

1. ✅ What It’s For:

  • Used to treat or prevent serious fungal infections, especially in the lungs (like aspergillosis), or in patients with weakened immune systems.

2. 💊 How to Take It:

Form matters:

  • Tablets (most common):

    • Take with food (preferably a full meal or nutritional drink).

    • Swallow whole — do not crush or chew.

  • Oral suspension:

    • Take with a high-fat meal or acidic drink (like cola) to help absorption.

    • Shake well before use.

    • Must be taken multiple times a day — unlike tablets.

  • IV form:

    • Given in hospital or monitored settings.

⚠️ Important: Tablets and oral suspension are NOT interchangeable. Stick with what was prescribed.

3. 🧪 Monitoring and Tests:

  • Regular liver function tests (LFTs).

  • Blood tests to check posaconazole levels, especially if:

    • You’re not improving

    • You’re feeling unwell

    • Other meds are added

  • Electrolytes (like potassium, magnesium)

  • ECG (if you’re at risk for heart rhythm problems)

4. ⚠️ Side Effects to Watch For:

Common:

  • Nausea, vomiting, diarrhea

  • Headache or dizziness

  • Loss of appetite

  • Fatigue

Call your doctor immediately if you get:

  • Yellowing of skin or eyes, dark urine (possible liver problem)

  • Fast or irregular heartbeat, fainting, chest pain (QT prolongation)

  • Severe rash, skin peeling

  • Muscle cramps, weakness, or palpitations (possible low potassium)

5. 🚫 Interactions – Very Important!

  • Posaconazole interacts with many medicines:

    • Statins, blood pressure drugs, anti-seizure meds

    • Immunosuppressants (like tacrolimus, cyclosporine)

    • Steroids (levels may increase)

  • Avoid grapefruit and St. John’s wort

  • Always check with your doctor or pharmacist before starting new meds or supplements.

6. 🚗 Driving and Activities:

  • Be careful with driving or using machinery if you feel dizzy or have vision problems.

7. 🧴 Storage:

  • Tablets: room temperature

  • Suspension: room temp (not refrigerated); shake well before use

🧾 In Simple Terms for the Patient:

“Take posaconazole with food every day. You’ll need blood tests to check your liver and drug levels. Let your doctor know if you feel dizzy, have yellow skin, a fast heartbeat, or any rash. Don’t take grapefruit, and always check with your doctor before starting any new medicines.”

by GAtherton

🟦 Key Advice for Patients Taking Itraconazole for the First Time

1. How to Take It – Depends on the Form:

  • Capsules:

    • Take with a full meal (ideally a fatty meal) to help absorption.

    • Do not take with antacids, proton pump inhibitors (like omeprazole), or H2 blockers (like ranitidine) — they reduce stomach acid and block absorption.

    • If acid-reducing medications are necessary, ask your doctor about strategies (e.g., acidic drinks like cola to help).

  • Liquid (oral solution):

    • Take on an empty stomach, at least 1 hour before or after food.

    • Swish in your mouth for a few seconds before swallowing if you're treating oral or throat infections.

✅ Always stick to the form (capsule vs liquid) your doctor prescribed — they’re not interchangeable.

2. What It’s For:

  • Used to treat fungal infections such as Aspergillosis, histoplasmosis, onychomycosis, and others.

3. Common Side Effects:

  • Nausea, bloating, or diarrhea

  • Headache

  • Mild dizziness or fatigue

  • Transient changes in liver enzymes

4. Serious Side Effects – Call a Doctor If:

  • Liver trouble: yellowing of skin/eyes, dark urine, pale stools, nausea, or upper right-sided pain

  • Heart symptoms: swelling in ankles/legs, shortness of breath, fatigue — may indicate congestive heart failure

  • Severe rash, itching, or skin peeling

  • Tingling, numbness, or nerve pain (rare)

5. Monitoring:

  • You’ll need:

    • Liver function tests (LFTs) — regularly

    • Itraconazole levels (blood test) — to ensure it’s effective and not toxic

    • Potassium levels — may drop in some patients

    • ECG (if at risk for heart rhythm problems)

6. Important Interactions – Tell Your Doctor About:

  • Steroids (especially if taken long-term)

  • Heart medications, statins, antacids, seizure drugs, and warfarin

  • Avoid grapefruit juice — it can interfere with metabolism

  • Avoid alcohol if possible (increases liver risk)

7. Driving and Activities:

  • Can cause dizziness — don’t drive or operate machinery until you know how it affects you.

🧾 Summary:

“Take itraconazole exactly as prescribed — with food if it’s capsules, or on an empty stomach if it’s liquid. Let your doctor know if you get nausea, yellowing skin, or ankle swelling. You’ll need regular blood tests to check your liver and drug levels. Avoid antacids, grapefruit, and always check for interactions before starting new meds.”

by GAtherton

🟦 Key Patient Advice for Starting Voriconazole

When starting voriconazole for the first time, it's important to provide clear, practical, and safety-focused information. Here's what a patient should be told:

1. How to Take It:

  • Take voriconazole on an empty stomach — at least 1 hour before or 1 hour after food.

  • Take it exactly as prescribed — usually twice daily at regular times.

  • Don’t stop suddenly unless advised.

2. Common Side Effects to Watch For:

  • Visual disturbances (blurry vision, changes in color or brightness) — often early on and usually temporary.

  • Photosensitivity (sunburn easily) — wear sunscreen and protective clothing.

  • Nausea or upset stomach

  • Skin rashes — report any rash, as rare serious reactions can occur.

  • Liver irritation — signs include dark urine, yellowing of skin/eyes, or upper right abdominal pain.

3. Serious Side Effects – Report Immediately:

  • Visual symptoms that worsen or don’t go away

  • Severe rash or peeling skin

  • Confusion, hallucinations, or tremors

  • Signs of liver trouble (yellow eyes, dark urine, pale stools)

4. Blood Monitoring Needed:

  • Liver function tests (LFTs) are usually checked before treatment and regularly during treatment.

  • Blood levels of voriconazole may also be monitored, especially if:

    • You're not responding

    • Side effects occur

    • You're on other medications that interact

5. Medication Interactions:

Voriconazole interacts with many drugs including:

  • Steroids (may increase steroid levels)

  • Warfarin, statins, some diabetes medications

  • Proton pump inhibitors (like omeprazole)

  • Some heart or seizure drugs

Always tell your doctor or pharmacist about all medications and supplements.

6. Driving and Activities:

  • Avoid driving or operating machinery if you have visual symptoms or feel dizzy.

7. Alcohol and Grapefruit:

  • Avoid or limit alcohol, as it may increase side effects.

  • Avoid grapefruit — it can affect how voriconazole is processed.

by GAtherton

🌍 Global Aspergillosis Specialist Centres

ECMM Centres of Expertise
European Confederation of Medical Mycology Centres of Expertise

While the UK hosts the National Aspergillosis Centre, several renowned institutions worldwide specialize in the diagnosis and treatment of aspergillosis. Here's a list of notable centers across different regions:​

🇺🇸 United States

  • Mayo Clinic (Rochester, Minnesota; Jacksonville, Florida; Scottsdale, Arizona)

    • Offers comprehensive care for aspergillosis patients, with multidisciplinary teams experienced in managing complex cases.

    • Provides advanced diagnostic tools and individualized treatment plans.

    • More information: Mayo Clinic Aspergillosis​

  • Johns Hopkins Hospital (Baltimore, Maryland)

    • Renowned for its pulmonary and infectious disease departments, offering specialized care for fungal infections.

    • More information: JHH Aspergillosis​

  • MD Anderson Cancer Center (Houston, Texas)

    • Specializes in treating immunocompromised patients, including those with invasive aspergillosis.

    • More information: MDACC Aspergillosis​

🇩🇪 Germany

  • Charité – Universitätsmedizin Berlin

    • One of Europe's largest university hospitals, with expertise in infectious diseases and mycology.​

  • University Hospital Cologne

    • Recognized for its research and treatment of fungal infections, including aspergillosis.​

🇫🇷 France

  • Institut Pasteur (Paris)

    • Conducts extensive research on aspergillosis and offers clinical services for patients with fungal infections.

    • More information: Institut Pasteur Aspergillosis​

🇸🇬 Singapore

  • National University Hospital (NUH)

    • Provides specialized care in respiratory and infectious diseases, including aspergillosis management.

    • More information: NUH​

🇦🇺 Australia

  • Royal Prince Alfred Hospital (Sydney)

    • Offers comprehensive respiratory services with experience in treating fungal lung diseases.

    • More information: RPAH​

  • Alfred Hospital (Melbourne)

    • Known for its expertise in infectious diseases and respiratory medicine.

    • More information: AH​

🧭 Finding Aspergillosis Expertise Near You

If you're seeking care outside these regions:

by GAtherton

UK Aspergillosis Specialist Centres

Here's a list of UK hospitals and specialist centres with expertise in managing aspergillosis, including chronic pulmonary aspergillosis (CPA), allergic bronchopulmonary aspergillosis (ABPA), and invasive aspergillosis:

🇬🇧 UK Aspergillosis Specialist Centres

1. National Aspergillosis Centre (NAC) – Wythenshawe Hospital, Manchester

  • Overview: The NAC is the UK's only NHS Highly Specialised Service for chronic pulmonary aspergillosis.

  • Services: Comprehensive care including diagnosis, treatment, and long-term management of aspergillosis.

  • Multidisciplinary Team: Includes respiratory physicians, infectious disease specialists, mycologists, specialist nurses, and pharmacists.

  • Research: Collaborates with the Manchester Fungal Infection Group (MFIG) for cutting-edge research.

  • Remote Support: Offers virtual multidisciplinary team (MDT) meetings and telemedicine consultations for patients across the UK.

  • Contact: NAC Website​

2. Royal Brompton and Harefield NHS Foundation Trust – London

  • Overview: Renowned for respiratory medicine, including the management of complex fungal lung diseases like ABPA and CPA.

  • Services: Specialist respiratory care with experience in fungal infections.

  • Contact: Royal Brompton Website​

3. Royal Papworth Hospital NHS Foundation Trust – Cambridge

  • Overview: Specializes in respiratory and thoracic medicine, with expertise in fungal lung diseases such as CPA and ABPA.

  • Services: Advanced diagnostics and treatment for fungal infections.

  • Contact: Royal Papworth Website​

4. University Hospitals Birmingham NHS Foundation Trust – Birmingham

  • Overview: Provides care for patients with chronic fungal lung infections, including aspergillosis.

  • Services: Comprehensive respiratory and infectious disease services.

  • Contact: University Hospitals Birmingham Website

5. North Bristol NHS Trust (Southmead Hospital) – Bristol

  • Overview: Offers respiratory care, including management of ABPA and fungal lung diseases.

  • Services: Specialist respiratory services with experience in fungal infections.

  • Contact: Southmead Hospital Website

6. Nottingham University Hospitals NHS Trust – Nottingham

  • Overview: Known for its expertise in managing fungal diseases, including aspergillosis.

  • Services: Specialist respiratory and infectious disease services.

  • Contact: NUH Website​

7. Addenbrooke’s Hospital (Cambridge University Hospitals NHS Foundation Trust) – Cambridge

  • Overview: Provides advanced respiratory care, including diagnostics and treatment for fungal lung infections.

  • Services: Comprehensive respiratory and infectious disease services.

  • Contact: Addenbrooke’s Website​

🔍 How to Access These Services

  • NHS Referral: Speak to your GP or current specialist about a referral to one of these centres.

  • Private Consultation: Some centres offer private consultations; check their websites for more information.

  • Support Networks: Joining patient support groups like the National Aspergillosis Centre Support  or Aspergillosis Trust can provide additional guidance and shared experiences.

  • Find an Expert Link

There are experienced centres in Scotland, Wales, and Northern Ireland that manage aspergillosis, although none are officially designated as national specialist centres like the National Aspergillosis Centre (NAC) in Manchester. Patients in these regions can still access expert care through local respiratory and infectious disease services, and referrals to the NAC are possible when needed.​

🏴 Scotland

  • Royal Infirmary of Edinburgh (NHS Lothian)
    Offers advanced respiratory services, including management of fungal lung diseases.​

  • Queen Elizabeth University Hospital, Glasgow
    Provides comprehensive respiratory and infectious disease care, with experience in treating aspergillosis.​

  • Aberdeen Royal Infirmary
    Hosts a regional respiratory unit with expertise in managing chronic pulmonary conditions, including fungal infections.​

🏴 Wales

  • University Hospital of Wales, Cardiff
    Features a specialist respiratory department experienced in managing conditions like ABPA and CPA.​

  • Morriston Hospital, Swansea
    Offers respiratory services with experience in treating fungal lung diseases.​

🇬🇧 Northern Ireland

  • Belfast City Hospital
    Provides specialist respiratory and infectious disease services, including management of aspergillosis.​

🔄 Referral to the National Aspergillosis Centre (NAC)

Patients from Scotland, Wales, and Northern Ireland can be referred to the NAC for specialized care. Referrals are typically made by a respiratory consultant or specialist. The NAC offers remote consultations and multidisciplinary team (MDT) meetings to support local clinicians. ​National Aspergillosis Centre

🧭 Next Steps

  • Consult Your GP or Specialist: Discuss your condition and the possibility of referral to a local specialist or the NAC.​

  • Contact the NAC: For more information or to facilitate a referral, visit the National Aspergillosis Centre.​

  • Patient Support: The Aspergillosis Trust offers resources and support for patients across the UK.

​

by GAtherton