Post-Intensive Care Syndrome (PICS) - Uncovered

Learn about Post-Intensive Care Syndrome (PICS) and why physiotherapy is essential for ICU survivors.

An alarming number of ICU survivors find themselves trapped in a relentless cycle of hospital readmission, clinical depression, and struggling to regain even basic independence, even months or years after discharge from the intensive care unit (ICU). Many never completely return to their pre-illness functional baseline - unable to climb stairs, manage self-care, or engage in meaningful activities that once defined their lives.

However, this is not inevitable. With early intervention, specialist physiotherapy, and comprehensive rehabilitation support, ICU survivors can reclaim their independence, rebuild their strength, and restore their quality of life.

What Happens After Critical Illness? Understanding Post-Intensive Care Syndrome

Surviving critical illness and intensive care is a significant achievement. However, many patients and their loved ones discover that the journey doesn't end at hospital discharge. What happens after you or your loved ones survive a bout of critical illness and leave the ICU?

What is Post-Intensive Care Syndrome (PICS)?

Post-Intensive Care Syndrome, or PICS, is increasingly common amongst people discharged from the Intensive Care Unit, and can persist for months or even years. Research shows that between 25-60% of ICU survivors experience PICS, with COVID-19 survivors showing even higher rates - up to 90%.

PICS encompasses three interconnected aspects of impairment:

Physical Impairment: ICU-Acquired Weakness (ICUAW) is a major contributor, involving significant skeletal muscle wasting and structural changes to muscle fibre types, resulting in profound weakness and reduced exercise capacity. Patients struggle with basic mobility, daily activities, and functional independence.

Cognitive Impairment: Memory problems, difficulty concentrating, and executive dysfunction affect quality of life and ability to return to work and normal routines. 

Psychological Impairment: Depression, anxiety, and post-traumatic stress disorder are common amongst ICU survivors, often stemming from the traumatic experience of critical illness and prolonged hospitalisation.

This multifaceted nature of PICS requires comprehensive and individualised rehabilitation.

PICS Has Become Even More Common Post-COVID

The COVID-19 pandemic dramatically increased the prevalence of Post-Intensive Care Syndrome. As our global healthcare system scrambled to address the crisis - managing respiratory failure, rationing PPE, meeting increased demand for essential medication and ventilators - attention naturally focused on acute survival rather than long-term recovery.

However, once patients were discharged from the ICU, healthcare systems faced an unprecedented challenge: How could we support the vast numbers of ICU survivors managing long-term PICS symptoms? 

A study revealed that amongst hospitalised COVID-19 patients, the health burden is 8.4 times higher than non-hospitalised cases, with a cumulative number of post-acute sequelae (persistent and prolonged effects after initial acute illness) of up to 2391.7 per 1000 persons over 3 years.

By 2023-2026, Singapore has established a coordinated PICS management system across public and private healthcare sectors. The National Centre for Infectious Diseases (NCID), National University Hospital (NUH), and Ng Teng Fong General Hospital now operate dedicated Long COVID clinics, with NCID managing 5-10 patient referrals per week through a multidisciplinary framework involving infectious diseases specialists, rehabilitation medicine, cardiology, and neurology.

The private sector has expanded accessibility significantly, with specialist clinics at Mount Elizabeth Hospital, Respiratory Medical Associates, and HOP Medical Centre providing comprehensive post-COVID-19 health screening and evaluation.

Home-based physiotherapy services have become increasingly popular, offering convenient chest physiotherapy and personalised rehabilitation in patients' familiar home environment. This is particularly valuable for immunocompromised or homebound individuals requiring safer and more accessible recovery options.

The Role of Physiotherapy in PICS Recovery: From Hospital to Home

The role of your physiotherapist is to give you the support you need through guidance, education and evidence-based rehabilitation for you and your loved ones. This is our top priority through the recovery process.

Early diagnosis and rehabilitation can help all parties involved move from dysfunction back towards functional independence.

How Physiotherapy Rehabilitation Addresses PICS

Assessment and Functional Measurement: At Thrive Healthcare, our physiotherapists conduct comprehensive assessments using tools such as the 6-Minute Walk Test, Sit Rise Test, and Timed Up and Go to objectively measure your functional capacity and track progress over time.

Read more: The Sit Rise Test for Active Ageing 

Early Mobilisation and Exercise: Physical rehabilitation delivered during and immediately after ICU admission produces significant improvements in critical illness polyneuropathy, myopathy, quality of life, mortality and healthcare utilisation. Our physiotherapists will design a progressive exercise programme tailored to your current abilities.

Chest Physiotherapy for Respiratory Recovery: For ICU survivors struggling with respiratory complications, chest physiotherapy helps clear lung secretions, improves breathing efficiency, and prevents bacterial buildup that could trigger further chest infections. This is particularly important for COVID-19 survivors experiencing post-COVID respiratory symptoms.

Structured Exercise Programmes: Structured, individualised exercise programmes significantly improve physical function. In one pilot programme, all 10 patients showed improvements: sit-to-stand performance increased by an average of 8 repetitions, 6-minute walk distance improved by 60 metres, and patients reported improved mood, confidence and feelings of support. 

Psychological Support Through Movement: Beyond physical gains, exercise-based interventions have shown significant improvements in mental health scores, with structured exercise leading to meaningful reductions in depression and anxiety. Movement and structured rehabilitation provide not just physical recovery, but psychological resilience.

Education for Patients and Caregivers: Physiotherapists at Thrive Healthcare educate both you and your caregivers about PICS symptoms, safe progression, recognising warning signs, and strategies for sustainable recovery. This knowledge empowers you to take an active role in your rehabilitation journey.

Read more: Nurse & Caregiver Training

Recognising When PICS Support is Needed

Recognise when you or your loved ones need to receive the care they need. Common signs that physiotherapy rehabilitation would benefit ICU survivors include:

• Persistent weakness affecting daily activities (walking, climbing stairs, self-care)

• Significant fatigue that limits activity tolerance

• Difficulty with balance or fear of falling

• Shortness of breath during minimal activity

• Persistent depression, anxiety or psychological distress

• Cognitive difficulties affecting return to work

• Reduced quality of life and social isolation

• Ongoing respiratory symptoms or recurrent chest infections

If you or your loved ones have any symptoms of PICS after hospitalisation, discuss them with your doctor and have them refer you to a specialist physiotherapist. Early diagnosis and rehabilitation can dramatically improve outcomes.

Ready to Begin Your Recovery From Critical Illness with Thrive Healthcare?

Whether you're recently discharged from the ICU, struggling with persistent PICS symptoms, or supporting a loved one through post-intensive care rehabilitation, Thrive Healthcare is here to guide you towards meaningful recovery and restored independence.

Contact Thrive Healthcare today to book your PICS rehabilitation assessment with our specialist physiotherapists. Let us help you move from surviving critical illness towards thriving in your daily life.