Douglas P. Gibson

Minimal hepatic encephalopathy is associated with motor vehicle crashes: the reality beyond the driving test.

Patients with minimal hepatic encephalopathy (MHE) have impaired driving skills, but association of MHE with motor vehicle crashes is unclear. Standard psychometric tests (SPT) or inhibitory control test (ICT) can be used to diagnose MHE. The aim was to determine the association of MHE with crashes and traffic violations over the preceding year and on 1‐year follow‐up. Patients with cirrhosis were diagnosed with MHE by ICT (MHEICT) and SPT (MHESPT). Self and department‐of‐transportation (DOT)‐reports were used to determine crashes and violations over the preceding year. Agreement between self and DOT‐reports was analyzed. Patients then underwent 1‐year follow‐up for crash/violation occurrence. Crashes in those with/without MHEICT and MHESPT were compared. 167 patients with cirrhosis had DOT‐reports, of which 120 also had self‐reports. A significantly higher proportion of MHEICT patients with cirrhosis experienced crashes in the preceding year compared to those without MHE by self‐report (17% vs 0.0%, P = 0.0004) and DOT‐reports (17% vs 3%, P = 0.004, relative risk: 5.77). SPT did not differentiate between those with/without crashes. A significantly higher proportion of patients with crashes had MHEICT compared to MHESPT, both self‐reported (100% vs 50%, P = 0.03) and DOT‐reported (89% vs 44%, P = 0.01). There was excellent agreement between self and DOT‐reports for crashes and violations (Kappa 0.90 and 0.80). 109 patients were followed prospectively. MHEICT patients had a significantly higher future crashes/violations compared to those without (22% vs 7%, P = 0.03) but MHESPT did not. MHEICT (Odds ratio: 4.51) and prior year crash/violation (Odds ratio: 2.96) were significantly associated with future crash/violation occurrence. Conclusion: Patients with cirrhosis and MHEICT have a significantly higher crash rate over the preceding year and on prospective follow‐up compared to patients without MHE. ICT, but not SPT performance is significantly associated with prior and future crashes and violations. There was an excellent agreement between self‐ and DOT‐reports. (HEPATOLOGY 2009.)

Persistence of Cognitive Impairment After Resolution of Overt Hepatic Encephalopathy

BACKGROUND & AIMS In patients with cirrhosis, hepatic encephalopathy (HE) has acute but reversible as well as chronic components. We investigated the extent of residual cognitive impairment following clinical resolution of overt HE (OHE). METHODS Cognitive function of cirrhotic patients was evaluated using psychometric tests (digit symbol, block design, and number connection [NCT-A and B]) and the inhibitory control test (ICT). Improvement (reduction) in ICT lures and first minus second halves (DeltaL(1-2)) were used to determine learning of response inhibition. Two cross-sectional studies (A and B) compared data from stable cirrhotic patients with or without prior OHE. We then prospectively assessed cognitive performance, before and after the first episode of OHE. RESULTS In study A (226 cirrhotic patients), 54 had experienced OHE, 120 had minimal HE, and 52 with no minimal HE. Despite normal mental status on lactulose after OHE, cirrhotic patients were cognitively impaired, based on results from all tests. Learning of response inhibition (DeltaL(1-2) > or =1) was evident in patients with minimal HE and no minimal HE but was lost after OHE. In study B (50 additional patients who developed > or =1 documented OHE episode during follow-up), the number of OHE hospitalizations correlated with severity of residual impairment, indicated by ICT lures (r = 0.5, P = .0001), digit symbol test (r = -0.39, P = .002), and number connection test-B (r = 0.33, P = .04). In the prospective study (59 cirrhotic patients without OHE), 15 developed OHE; ICT lure response worsened significantly after OHE (12 before vs 18 after, P = .0003), and learning of response inhibition was lost. The 44 patients who did not experience OHE did not have deteriorations in cognitive function in serial testing. CONCLUSIONS In cirrhosis, episodes of OHE are associated with persistent and cumulative deficits in working memory, response inhibition, and learning.

The Multi-Dimensional Burden of Cirrhosis and Hepatic Encephalopathy on Patients and Caregivers

OBJECTIVES:Cirrhosis and hepatic encephalopathy (HE) can adversely affect survival, but their effect on socioeconomic and emotional burden on the family is not clear. The aim was to study the emotional and socioeconomic burden of cirrhosis and HE on patients and informal caregivers.METHODS:A cross-sectional study in two transplant centers (Veterans and University) of cirrhotic patients and their informal caregivers was performed. Demographics for patient/caregivers, model-for-end-stage liver disease (MELD) score, and cirrhosis complications were recorded. Patients underwent a cognitive battery, sociodemographic, and financial questionnaires. Caregivers were given the perceived caregiver burden (PCB; maximum=155) and Zarit Burden Interview (ZBI)-Short Form (maximum=48) and questionnaires for depression, anxiety, and social support.RESULTS:A total of 104 cirrhotics (70% men, 44% previous HE, median MELD 12, 49% veterans) and their caregivers (66% women, 77% married, relationship duration 32±14 years) were included. Cirrhosis severely impacted the family unit with respect to work (only 56% employed), finances, and adherence. Those with previous HE had worse unemployment (87.5 vs. 19%, P=0.0001) and financial status (85 vs. 61%, P=0.019) and posed a higher caregiver burden; PCB (75 vs. 65, P=0.019) and ZBI (16 vs. 11, P=0.015) compared with others. Cognitive performance and MELD score were significantly correlated with employment and caregiver burden. Veterans and non-veterans were equally affected. On regression, depression score, MELD, and cognitive tests predicted both PCB and ZBI score.CONCLUSIONS:Previous HE and cognitive dysfunction are associated with worse employment, financial status, and caregiver burden. Cirrhosis-related expenses impact the family units daily functioning and medical adherence. A multidisciplinary approach to address this burden is required.

The Effect of Fatigue on Driving Skills in Patients With Hepatic Encephalopathy

OBJECTIVES:Hepatic encephalopathy, both overt (OHE) and minimal (MHE), is associated with poor quality of life and fatigue. The aim of this study was to define the effect of fatigue on driving skills in MHE and OHE patients.METHODS:Cirrhotics and age/education-matched controls were administered a psychometric battery of tests to diagnose MHE. Cirrhotics with recent OHE on lactulose were also included. All subjects underwent a driving simulation; to assess fatigue, the second half performance was compared with the first half of the simulation. The outcomes were collisions, speeding, road excursions, and center crossings. Actual driving-associated fatigue was assessed by the American Medical Association (AMA) driver survey.RESULTS:A total of 100 cirrhotics (51 MHE, 27 no MHE, and 22 OHE) and 67 controls were included. A significantly higher proportion of OHE and MHE patients admitted to fatigue after actual driving on the AMA survey compared with no MHE patients (P=0.02). All patients who admitted to fatigue and none who denied fatigue on the AMA survey had simulator collisions. Psychometric and simulator performance in treated OHE patients was similarly impaired to MHE patients despite therapy. Within groups, a significant increase in collisions, speeding, and center crossings in the second half (P=0.01) was seen only in MHE patients.CONCLUSIONS:Psychometric and simulator performance in patients with recent OHE on treatment is similarly impaired as that of untreated MHE patients. Simulator performance in MHE worsens over time with fatigue. OHE and MHE patients had a higher rate of actual driving-associated fatigue on the AMA survey, which was significantly predictive of simulator collisions.

PROMIS computerised adaptive tests are dynamic instruments to measure health-related quality of life in patients with cirrhosis.

Aliment Pharmacol Ther 2011; 34: 1123–1132

Decision-making, emotional distress, and quality of life in patients affected by the recall of their implantable cardioverter defibrillator

AIMS We sought to investigate whether patients with implantable cardioverter defibrillators (ICDs) were suffering from emotional distress related to the recent United States Food and Drug Administration (FDA) recalls, to better understand their decision process related to device replacement, and to assess any impact of recall on quality of life (QOL). METHODS AND RESULTS Thirty-one patients experiencing device recalls answered questions regarding their knowledge about the recall and their decision whether to replace the device. Fifty patients whose devices were not recalled reported demographic data. In both groups, psychological factors were assessed. No significant differences were found for psychological factors. Most patients reported being informed of their recall by their physician. Most estimated the risk of device failure to be low or very low, but they overestimated the fail rate. Thirty-six per cent of patients reported feeling anxious about the recall. CONCLUSION No significant differences existed in psychological factors and QOL between patients whose ICDs were recalled compared with those whose devices were not. The majority of patients whose ICDs are the subject of an FDA advisory/recall have a realistic understanding of the risks of device failure. Prompt information, support, and reassurance provided by healthcare professionals may allay patient distress.

Psychosocial Factors, Quality of Life, and Psychological Distress: Ethnic Differences in Patients with Heart Failure

Advances in treatment have prolonged life in heart failure (HF) patients, leading to increased attention to quality of life (QOL) and psychological functioning. It is not clear if ethnic differences exist in factors associated with psychological well-being. We examined psychosocial factors associated with depression and anxiety in 97 HF patients. Medical records were reviewed and patients (M age 53, 50% African American) completed surveys examining social support, coping, spirituality, and QOL for their association with depression and anxiety. Multiple regressions suggested that psychosocial factors were associated with psychological health. Patients with lower social support, lower meaning/peace and more negative coping reported greater depression; positive coping, and lower meaning/peace were associated with higher anxiety. Ethnicity stratified models suggested that spiritual well-being was associated with depression only among African Americans and QOL partially mediated this relationship. Findings suggest the importance of considering the unique psychosocial needs of diverse populations to appropriately target clinical interventions.

Illness Apprehension, Depression, Anxiety, and Quality of Life in Liver Transplant Candidates: Implications for Psychosocial Interventions

BACKGROUND End-stage liver disease is associated with diminished quality of life (QOL). Numerous physical and psychosocial problems that affect QOL are common in those undergoing evaluation for liver transplantation. OBJECTIVE Identifying which of these challenges are most closely associated with QOL would be helpful in developing priority targets for evidence-based interventions specific to those undergoing transplant evaluation. METHOD A total of 108 adults undergoing psychologic assessment for liver transplant completed clinical interview, neuropsychologic testing, and self-report inventories of depression, anxiety, cognitive appraisal characteristics, support resources, and QOL. RESULTS Multiple regression analyses revealed that while emotional symptoms (anxiety and depression) were primarily associated with mental QOL, illness apprehension was the only variable uniquely associated with physical QOL after accounting for severity of liver disease, cognitive status, emotional symptoms, and support resources. CONCLUSION Findings suggest that psychosocial interventions prioritizing reduction of illness-related fear and symptoms of anxiety/depression would likely have the greatest effect on QOL in persons with end-stage liver disease awaiting transplantation.

Modified‐orientation log to assess hepatic encephalopathy

The subjectivity of the West‐Haven criteria (WHC) hinders hepatic encephalopathy (HE) evaluation. The new HE classification has emphasised assessment of orientation. The modified‐orientation log (MO‐log, eight questions, scores 0–24; 24 normal) is adapted from a validated brain injury measure.

General Intellectual Decline and Daily Living Skills

A total of 64 elderly individuals presenting with cognitive decline were administered a test of general intelligence and a measure of adaptive knowledge and daily living skills. Premorbid ability was estimated using a demographic formula and a reading test. After controlling for age and depression, general intellectual ability accounted for a large amount of the variance in a broad range of adaptive knowledge and behavioral skills, reflecting the influence of premorbid ability and especially estimated decline. Different patterns of adaptive knowledge and skills were identified as a function of measured IQ and of estimated decline in IQ. Results suggest a threshold of intellectual decline for deterioration in daily living skills. Studies purporting to demonstrate that impairments in particular neuropsychological domains predict specific functional deficits need to control for general intellectual ability and/or the extent of intellectual decline.