Adults with Childhood-Onset Disabling Conditions
Joyce Oleszek
Laura Pickler
Dennis Matthews
This chapter will outline the most common congenital and childhood-onset disabling conditions and the associated secondary conditions encountered as adults. An effort has been made to be comprehensive while emphasizing a practical approach to caring for the adult patient. Medical transition from pediatric to adult care will be introduced as it applies to public health initiatives. We sought to emphasize the many ways that a preventative approach to health and wellness is appropriate in the comprehensive care of adults with childhood-onset disabilities. While we will highlight some aspects of care in this chapter, we want to direct the reader to a more comprehensive treatment of some specific conditions elsewhere in this book, specifically the chapters on osteoporosis, sexuality, women’s health, and primary care.
INTRODUCTION
Children with complex medical and genetic conditions are living longer than was predicted in the past due to better treatments and overall care (1). According to 2000 nationwide census data, approximately 6% or 2.6 million children and youth aged 5 to 15 years have a disability. Currently, 90% of children born with special health care needs reach adulthood (2). Often, the success of excellent pediatric medicine results in young adults who require ongoing, sometimes intensive, medical supervision throughout their lives.
In 2002, the American Academy of Pediatrics, The American Academy of Family Medicine, and the American College of Physicians—American Society of Internal Medicine collaborated on a policy statement to ensure that young people with special health care needs were equipped to move from child-centered to adult-centered health delivery systems (3). In a report from the Maternal and Child Health Bureau (MCHB), published in 2001, three general barriers were identified to health care transitions for young adults: training of qualified providers, funding for health delivery, and bureaucratic obstacles.
In reality, the process of transition should be viewed as a continuum. There are many barriers that challenge families, patients, and physicians alike that greatly complicate the process. The physician receiving transitioning youth must have an understanding of what some of these barriers entail in order to deliver compassionate care to young adults attempting to make the leap into the adult health care system.
The Medical Home model has been viewed as having primary responsibility for taking charge of transition activities to ensure that young adults with chronic, childhood-onset illness continue to receive the quality of health care that characterized their pediatric years. Thus, the role and responsibility of a medical home has continued to expand with ideals that are difficult to attain without a thorough understanding of the team approach implied in the concept.
The MCHB defines children and youth with special health care needs (CYSHCN) as “those who have, or are at increased risk for having, a chronic physical, developmental, behavioral or emotional condition and who also require health and related services of a type or amount beyond that required by children generally” (4). In 1989, The Omnibus Budget Reconciliation Act (OBRA), Public Law 101-239, amended Title V of the Social Security Act to include the authority and responsibility of MCHB to fully address the needs of all children. In addition, the focus under MCHB for CYSHCN was to provide leadership in promoting a community-based system of services that is family centered, comprehensive, coordinated, and culturally competent, thus building services around a medical home approach. The goals for the Title V CSHCN Program include:
Families will partner in decision making at all levels and will be satisfied with services.
All CYSHCN will receive coordinated, ongoing, comprehensive care within a medical home.
All CYSHCN families will have adequate insurance to pay for the services they need.
All children will be screened early and continuously for special health care needs.
Community-based service systems will be organized so that families can use them easily.
All youth with special health care needs will receive the services necessary to make transitions to all aspects of adult life.
While not all these goals will be the direct responsibility of one clinician, the overall success of medical care delivered in a
chronic care model is hinged on the management of chronic conditions that encompass each of the six goals above.
chronic care model is hinged on the management of chronic conditions that encompass each of the six goals above.
The Medical Home model addresses barriers to health care access and provides a framework to operationalize efforts to improve health care (see below). The patient and the family are at the center of the defining statement rather than a specific clinician’s office. Each of the seven components of a medical home becomes linked to some extent to every medical provider of care for the patient with special health care needs as they manage chronic diseases. Familiarity with these components is the first step toward increasing the medical home approach in specialty care.
The components of the Medical Home Initiative (5) include:
Access to care
Family-centered care
Cultural responsiveness
Continuity of care
Comprehensive care
Compassionate care
Coordination of care
Access to care refers to whether the patient can receive the health care services they need when they need it, even outside regular business hours and includes having a way to pay for needed services. Family-centered care is health care that takes into consideration the requests of the family and respects them as partners in the health care decision making of the medical home concept. Cultural responsiveness considers the values and beliefs that the family and the patient bring with them into the medical encounter. Continuity of care implies communication among all health care providers, especially primary care physicians and specialists. Comprehensive care is medical care that includes primary medical and developmentally appropriate care, dental care, mental health services, as well as crisis and chronic illness management. Application of routine primary care guidelines is also a component of comprehensive care. Compassionate care considers the concerns of the family and how the diagnosis of the patient may affect others. Coordination of care embodies the day-to-day development of a health care plan, including the transition plan, for a patient and ensures its implementation.
With the medical home concept at the hub of chronic illness care, rehabilitation professionals will be challenged to provide leadership in long-term follow-up of our patients. Preserving wellness and independence is the ultimate goal, not necessarily episodic/acute care management. Preservation of quality-of-life indicators, as individually applied to each patient, while postponing functional decline is an important role.
As young adults with disabilities transition to more independence, physicians need to educate patients and their families about potential age-related changes and medical issues. There is a growing interest in the literature about aging issues and secondary conditions among persons with congenital and childhood-onset disabling conditions. Differentiating between primary, associated, and secondary conditions may help the clinician categorically organize a patient’s care goals.
The primary condition is self-explanatory. It is the diagnosis that initiated entering into medical care from the point of evaluation during gestation, infancy, or childhood. Secondary conditions are impairments, functional limitations, disabilities, diseases, injuries, or other conditions that occur during the life of a person with a disability, in which the primary disabling condition is a risk factor for that secondary condition or may alter the standard intervention for prevention of treatment of any health condition (Syracuse Conference, 1994). A disabling condition, such as a spinal cord injury (SCI) or cerebral palsy (CP), is not synonymous with illness or disease. People with disabilities are generally healthy, and one should not expect a decline in health and function as they mature. Therefore, physicians must have an index of suspicion for such conditions that may have onset in late adolescence or adulthood or be insidiously progressive. They may include progression of pathology or impairment, either through complications or through the aging process. Commonly reported secondary conditions include pain, contractures, recurrent urinary tract infections, pressure sores, and osteoporosis. Associated conditions or residual impairments are conditions that result from the defect, injury, or disease and often may be considered primary impairments depending on their severity. An example is neurogenic bowel/bladder in patients with spina bifida. Comorbidities are medical conditions unrelated to the primary disabling conditions such as adult-onset diabetes or hypertension in a patient with CP.
Health perception is an individual determination and is affected by personal expectations, experiences, sense of vulnerability, support, and locale. The World Health Organization (WHO) defines quality of life (QoL) as “an individual’s perception of their position in life in the context of the culture and value systems in which they live, in relation to their goals, expectations, standards, and concerns” (6). Health-related QoL is a broad concept affected in a complex way by an individual’s physical health, psychological state, personal beliefs, social relationships, and their relationship to salient features of their environment. Although it is widely acknowledged that this is an area of concern for adults with chronic disabilities, there are limited studies that have systematically assessed QoL in these individuals, particularly those with neuromuscular disorders (7). This may be due in part to the fact that QoL is perceived as a somewhat vague entity that many people are concerned about, but something that nobody clearly knows what to do about. These issues are important in examining disability in adults who are survivors of disabling childhood disorders.
What follows is an overview of common chronic conditions and specific management recommendations for care.
SPINAL CORD INJURY
Background
When SCI occurs at a young age, there are unique medical complications that can significantly impact the adult years. Transition into adult care requires knowledge of these issues
as well as a multidisciplinary treatment approach. Recent data suggest that adults with childhood-onset SCI have a slightly lower life expectancy compared with those who sustained their injury as an adult. However, those with childhood-onset SCI are still living long lives with life expectancy estimates of approximately 83% of normal for those with minimal deficit incomplete injuries compared with 50% of normal in non—ventilator-dependent tetraplegics (8).
as well as a multidisciplinary treatment approach. Recent data suggest that adults with childhood-onset SCI have a slightly lower life expectancy compared with those who sustained their injury as an adult. However, those with childhood-onset SCI are still living long lives with life expectancy estimates of approximately 83% of normal for those with minimal deficit incomplete injuries compared with 50% of normal in non—ventilator-dependent tetraplegics (8).
According to the 2006 Annual Statistical Report for the Model SCI Care Systems, approximately 253,000 people are living with SCI in the United States, with 11,000 new cases reported each year. Less than 20% of SCI occurs in children and adolescents with approximately 5% of those less than 15 years of age (9).
Adults with childhood-onset SCI may experience acceleration of the aging process because of diminished physiologic reserves and increased demands on functioning body systems. Secondary medical conditions are extremely common in adults with pediatric-onset SCI and can negatively impact a satisfying adult life. The most common conditions include pneumonia, pressure ulcers, and genitourinary issues (10). Long-term management of adults with SCI also needs to include ongoing evaluation of psychosocial issues such as life satisfaction, living situation, employment, and education.
Problem-Based Approach to Management
Pulmonary
Respiratory complications are the leading cause of death in persons with spinal cord injuries. It has been found that 72.3% of deaths from respiratory causes are due to pneumonia. There is a well-documented association between increased risk of pneumonia and higher level of SCI (11). Inspiratory capacity is decreased in persons with higher level injuries, which can lead to microatelectasis, dyspnea with exertion, and (in those with more severe impairments) respiratory insufficiency. Muscles of expiration can be impaired, which can impact cough effectiveness and clearance of secretions with susceptibility to lower respiratory tract infections (12). The high incidence of scoliosis in childhood-onset SCI may influence pulmonary function as adults, particularly when curves are large and not surgically corrected. Where appropriate, respiratory muscle strength training, cough-assistive devices, and noninvasive ventilation need to be considered. Vaccinations against influenza and Streptococcus pneumoniae are recommended. Smoking should be strongly discouraged due to the potential adverse affect on respiratory function.
Bladder
Renal failure was, in years past, the leading cause of death in persons with SCI, but this is no longer the case due to significant advances in urologic management. However, urinary tract infections continue to be a high cause of morbidity. UTIs have been reported in 74% of adults with childhood-onset SCI (13). Greater neurologic impairment has been shown to be a risk factor for UTI in both childhood- and adult-onset SCI (13,14). UTI’s may lead to bladder and renal calculi, pyelonephritis, and vesicoureteral reflux. The use of prophylactic antibiotics has not been well supported (15). Nephrolithiasis is a common problem in persons with SCI and can contribute to renal failure. Risk factors that can contribute to UTIs and resultant stone formation are vesicoureteral reflux, chronic catheterization, detrusor-sphincter dysfunction, immobilization hypercalciuria, and prior kidney stones (16). The incidence of bladder cancer in SCI is 16 to 28 times higher than that of the general population. Risk factors for bladder cancer are chronic indwelling catheters, smoking, and renal and bladder stones. Gross hematuria should raise concern for bladder cancer (17).
Routine screening of the urinary tract is necessary to decrease morbidity, but there is a lack of consensus on the surveillance tool to use. Most physicians recommend a yearly renal ultrasound for evaluation of the upper tracts, whereas more than half routinely use urodynamic studies for evaluation of the lower tract (18). A survey of physicians found that the combination of clean intermittent catheterization (CIC) plus anticholinergic agents is the favored method for hyper-reflexic bladder management, whereas CIC alone is preferred for the areflexic bladder (18).
Bowel
There is a high prevalence and wide spectrum of gastrointestinal complaints in SCI.
Bowel incontinence is a commonly reported complication in adults with childhood-onset SCI (13). Bowel dysfunction tends to increase with duration and severity of SCI (19). Chronic constipation can lead to megacolon, which has been found more commonly in those with longer duration of injury and older age (20). Sixty percent of adults with childhood-onset SCI report a bowel program exceeding 30 minutes (21). Thus, incontinence and prolonged bowel program duration can greatly impact QoL.
Skin
Pressure ulcers are one of the most common secondary conditions experienced by adults with childhood-onset SCI and have been reported in 44% of persons (13). They are associated with significant morbidity and have great impact on adult outcomes including perceived health status, community integration, and life satisfaction (22). They are also one of the leading causes of rehospitalization (11). The financial burden of such a hospitalization can be tremendous. Many studies have shown that prevalence of pressure ulcers increases with time postinjury. Those with complete injuries, previous pressure ulcers, and older age tend to have a higher risk (23—25). Adults who have sustained an SCI as a child are more likely to develop hip subluxation, which could result in a pelvic obliquity and predisposition to pressure ulcers (26). Individuals need to be vigilant about skin checks and pressure relief. Seating systems and orthotics need ongoing monitoring and need re-evaluation in the event that a new pressure sore develops.
Pain
There are many potential sources of pain in adults with chronic spinal cord injuries. According to Vogel and colleagues in 2002, pain in adults with childhood-onset SCI has been
reported as high as 69% (22). Adults with SCI report pain of a musculoskeletal nature most frequently, followed by neuropathic and lastly visceral (27). Neuropathic pain has been found to be less common in persons less than 20 years at the time of injury (28). Many studies have shown that persons with SCI and associated pain have decreased life satisfaction (29,30). Thus, it is imperative that clinicians investigate and manage pain appropriately.
reported as high as 69% (22). Adults with SCI report pain of a musculoskeletal nature most frequently, followed by neuropathic and lastly visceral (27). Neuropathic pain has been found to be less common in persons less than 20 years at the time of injury (28). Many studies have shown that persons with SCI and associated pain have decreased life satisfaction (29,30). Thus, it is imperative that clinicians investigate and manage pain appropriately.
Musculoskeletal pain is common, particularly in the shoulders. Vogel et al. found that 48% of adults with childhood-onset SCI report shoulder pain (22). It has been shown that prevalence and intensity of shoulder pain in wheelchair users is significantly higher in persons with tetraplegia (31). Wheelchair users may be more prone to pain due to the repetitive use of their upper extremities during wheelchair propulsion, transfers, and self-care. There is also evidence that the prevalence of shoulder pain increases over time (32). A home exercise program of stretching and strengthening has been shown to be effective in decreasing pain and improving function and satisfaction in wheelchair users (33).
Peripheral nerves can be a source of pain. Carpal tunnel syndrome has been reported to be the most common upper limb neuropathy, and sciatic neuropathy the most common lower-limb abnormality. Persons with tetraplegia developed more frequent peripheral nerve lesions than paraplegics (34).
Pain can result in increased spasticity which can further increase pain. Management needs to focus on the underlying cause, but pain may improve with reduction in spasticity such as with antispasticity medications or focal injections.
Management includes evaluation of ergonomics and biomechanics of functional tasks, equipment, and lifestyle in addition to traditional interventions such as medications, manual medicine, trigger point injections, physical therapy, and tone management.
Neurologic
A syringomyelia must be considered when there is progressive neurologic deterioration after a stable period. It has been found to occur more often in those with complete injuries and is often associated with arachnoiditis (35). Clinical symptoms can include pain, weakness, sensory disturbance, and autonomic dysfunction. It can occur months to years after SCI. Referral to neurosurgery should be made for surgical considerations.
Autonomic Dysfunction
Autonomic dysreflexia (AD) is a potentially life-threatening complication of SCI in which uncontrolled sympathetic outflow occurs in those with lesions above T6 in response to a noxious stimulus such as bladder or bowel distension. The hypertension and compensatory bradycardia that result can be life threatening if not promptly recognized and treated. AD has been reported in 42% of adults with childhood-onset SCI (13). This is higher than that reported in adult-onset SCI (23). Women need to be educated about the risk of AD during pregnancy and nursing. Most can have successful vaginal deliveries but need appropriate monitoring and epidural anesthesia early in labor (36).
Osteoporosis
Fractures may be asymptomatic in persons with SCI and impaired sensation may delay treatment. Complications including impaired fracture healing, pressure sores, infection, and osteomyelitis present an additional cause of morbidity.
Osteoporosis is a well-known consequence of SCI. Fracture prevalence has been reported to increase with time, from 1% in the first 12 months to 4.6% in individuals greater than 20 years postinjury (37). As with other disabilities, fractures are frequently associated with only minor trauma. Bone loss occurs rapidly after an SCI with the majority of loss occurring in the lower extremities. Trabecular bone is more affected than cortical bone in the SCI population. There is dissociation between bone mineral density (BMD) in the hip and the spine. It has been found that there is a relative maintenance of BMD in the lumbar spine with significant demineralization of the proximal femur (38). This is consistent with the finding that fractures occur primarily in the lower extremities and not in the vertebral bodies.
The accrual of bone mass is accelerated during puberty, and this process is interrupted in childhood-onset SCI (39,40). In a study of adults with childhood-onset SCI, DXA studies showed that the BMD at the lumbar spine was normal but greatly decreased at the proximal femur region. Also, persons with higher level injuries (C2 to T6) had higher BMD (40). This reinforces the need for aggressive prevention and treatment of osteoporosis early on.
DXA is the gold standard for evaluating BMD in children and adults. If possible, DXA scans should be done using the same machine each year to avoid variations in test results caused by different equipment. Adequate intake of calcium and vitamin D is important. The use of alendronate has been shown to have a positive effect on BMD in persons with SCI, but more research is necessary (41). Functional electrical stimulation (FES) has not been shown to change BMD significantly (42). Consultation with an endocrinologist experienced in the management of metabolic bone disease can be extremely helpful.
Cardiac
Age is clearly an important risk factor for cardiovascular disease in the nondisabled population as well as those with SCI. However, it has also been shown that total cholesterol and LDL are higher while HDL is lower in those with increased duration postinjury (43). It has been postulated that SCI bestows an additional cardiac risk over that with age due to enforced sedentary lifestyle and that this increases with duration post injury (44).
With cardiovascular disease becoming a leading cause of mortality in SCI, discussing modifiable risk factors such as activity level, weight control, smoking, and alcohol consumption is extremely important.
Depression/QoL
Depression is a significant concern in adults with pediatric-onset SCI as depressive symptoms have been reported in 27% (45). Depression has been associated with lower QoL, less community participation, and more medical complications. When evaluating life satisfaction, there appears to be no significant difference between men and women, but those with tetraplegia are significantly less satisfied than those with paraplegia (46). Fortunately, for most, perceived QoL among persons with long duration spinal cord injuries is high and relatively stable over time (47).
CEREBRAL PALSY
Background
CP is the most common form of chronic physical disability of childhood. CP refers to a heterogeneous group of disorders that describe impairment in the development of posture and motor control as a result of a nonprogressive lesion of the developing central nervous system. No assumptions should be made with regard to cognitive ability based on motor functioning alone. Many adults with CP live and work independently in the community and lead full, productive lives (48). However, motor performance can deteriorate once adulthood is reached due to the impact of various secondary conditions. It has been found that follow-up with health and rehabilitation services is dramatically reduced once adulthood is reached (49).
The life expectancy in CP is reduced depending upon the severity and other associated health conditions. Several studies have demonstrated that survival is influenced by the presence of severe mental retardation and reduced mobility (50, 51, 52). The key predictors were lack of basic functional skills including mobility and feeding. Adults lacking these skills had much reduced life expectancies, as short as 11 years for the worst functioning groups. By contrast, survival of high-functioning adults was close to that of the general population. Life expectancies of adults of a given age can differ by 40 years or more, according to their functional level (51).
In the modern era of molecular genetics, any child or adult with a diagnosis of CP should be considered a candidate for periodic evaluation to better describe their underlying condition. The time of transition from pediatric medicine to the adult health care system is an ideal time to relook at the individual from a diagnostic perspective.
Problem-Based Approach to Management
Pain
Pain has been recognized as a serious secondary problem in adults with CP. Chronic pain has been reported in 30% to 67% of adults, with back and lower extremities being the most commonly affected sites (53,54). Adults with dyskinesia tend to report more cervical pain (55). Fifty percent of adults report pain in more than one body part (48). It is plausible that improper biomechanical forces due to spasticity, contractures, and physical stress could lead to overuse injuries, but this has not been widely studied in CP (55). Several studies have documented the impact of chronic pain on the lives of adults with CP. Many adults experience limitations in their activities, social withdrawal, decreased self-esteem, depression, loss of roles, relationship strain, and emotional distress that leads to a cycle of despair and hopelessness (56,57). Deterioration in function can also be seen as a result. Assessment of pain can be challenging in those with severe cognitive impairment; thus, changes in behavior, posture, spasticity, or range of motion should heighten awareness.
Spasticity has been shown to play a significant role in the development of chronic pain in persons with CP. Spasticity can result in muscular and joint pain, and spasticity often increases in response to the pain. It has been found to be associated with higher rates of osteoarthritis, dislocation, pain, and pressure ulcers (58). Tone management including antispasticity medications, botulinum toxin, phenol neurolysis, and intrathecal baclofen can be helpful. In a study of adults with spasticity, including CP, botulinum toxin combined with therapy improved function and activities of daily living (ADL) in up to 91% while pain was improved in 90% (59).
Treatment of pain is challenging and it has been found that the majority of adults with CP and chronic pain do not seek help from health care providers for pain management (60). One study demonstrated no significant change in pain intensity over 2 years despite an increased use of varied pain treatments (61). Often, once an adult develops chronic pain, there may be few treatments that will be effective (56). Multidisciplinary and cognitive behavioral therapies have proven beneficial to patients with CP-related chronic pain. Coping in this population has been shown to improve when the training is focused on teaching and encouraging patients to learn to maintain their daily tasks despite pain (56).
Musculoskeletal
It has been suggested that adults with CP may show musculoskeletal or performance changes typical of advanced aging earlier than their nondisabled peers (55). Disabilities that have a long duration can produce excessive wear and tear on the muscular, skeletal, and other body systems.
Contractures are common in adults with CP and may significantly contribute to joint pain, sitting intolerance, difficulty with ambulation and transfers, and pressure sores. Eighty percent of adults report contractures with 33% of these occurring in 2 to 3 joints (48). Hip adduction and flexion contractures and windswept deformities create pelvic obliquities and tend to be associated with hip pain as well as problems with perineal care as reported by Noonan and colleagues. Subluxed or dislocated hips can remain problematic in adults with CP. By adulthood, severity of progression can preclude many interventions that may have been suitable early on, but what, if any, management is needed remains debatable (62). The presence of a unilateral hip dislocation often creates a pelvic obliquity that can result in sitting imbalance, hip pain, and pressure ulcers. The reported incidence of hip pain in adults with varied severity of CP is 18% to 50% (58,62,63). It is