Do patients on oral chemotherapy have sufficient knowledge for optimal adherence? A mixed methods study.

A new treatment paradigm has emerged with many patients now receiving oral chemotherapy (OC) as first-line treatment for cancer. Treatment with OC has resulted in reduced hospital costs, more autonomy for patients but with added responsibilities for patient self-management. Little is known about patient's knowledge following patient education to enable optimal adherence with OC. A mixed methods study was carried out using a self-report questionnaire to patients on OC for multiple myeloma (MM) followed by semi-structured interviews with patients at home. Analysis identifies high rates of adherence (92.2%) with OC for MM. However, statistically significant knowledge deficits were identified, which were related to patient ethnicity and to gender. There is the potential for non-intentional non-adherence with OC due to deficits in knowledge of OC. Support at home needs to include primary care practitioners such as GPs, practice nurses and pharmacists so that timely support is easily accessible especially in the early phase of treatment.

Developing peer support in film for cancer self-management: what do men want other men to know?

PURPOSE: This study reports an innovative theory-driven approach for developing filmed peer support for cancer self-management. Peer support conventionally includes empathetic interaction between people with shared experiences. This unique study considers how to authentically communicate peer empathy in a one-way film narrative. METHODS: We co-created a film based on phenomenological interviews with seven men who had volunteered to support other men by sharing their experiences of coping with prostate cancer. The film contributed to successful engagement with self-management. Interpretative phenomenological analysis of the interview data was conducted to explore the components of experiential empathy that the men had communicated. RESULTS: Four themes were identified illustrating what men wanted other men to know about coping with prostate cancer: Going into the unknown, it was difficult but I got through highlighted trauma and the importance of having a determined attitude; Only you can do it illustrated the triumph of their journey and of regaining control; I haven't changed massively reflected the importance of a constant self; and Stay involved represented the overriding need to remain part of pre-cancer social environments. CONCLUSIONS: We propose a construct framework of experiential empathy for men with prostate cancer: Resilience, Regaining Control, Continuity-of-Self, and Social Connectedness. Filmed peer support that communicates these constructs will offer wide-ranging benefit to meet the needs of this group of men in both e-health and face-to-face self-management contexts. Further research could develop this theory-driven approach to filmed peer support for other cancer groups.

Integrative review on the non-invasive management of lower urinary tract symptoms in men following treatments for pelvic malignancies.

AIM: To develop a non-invasive management strategy for men with lower urinary tract symptoms (LUTS) after treatment for pelvic cancer, that is suitable for use in a primary healthcare context. METHODS: PubMed literature searches of LUTS management in this patient group were carried out, together with obtaining a consensus of management strategies from a panel of authors for the management of LUTS from across the UK. RESULTS: Data from 41 articles were investigated and collated. Clinical experience was sought from authors where there was no clinical evidence. The findings discussed in this paper confirm that LUTS after the cancer treatment can significantly impair men's quality of life. While many men recover from LUTS spontaneously over time, a significant proportion require long-term management. Despite the prevalence of LUTS, there is a lack of consensus on best management. This article offers a comprehensive treatment algorithm to manage patients with LUTS following pelvic cancer treatment. CONCLUSION: Based on published research literature and clinical experience, recommendations are proposed for the standardisation of management strategies employed for men with LUTS after the pelvic cancer treatment. In addition to implementing the algorithm, understanding the rationale for the type and timing of LUTS management strategies is crucial for clinicians and patients.

Complementary therapy support in cancer survivorship: a survey of complementary and alternative medicine practitioners' provision and perception of skills.

This study reviewed the confidence and perceived skills of complementary and alternative medicine (CAM) practitioners in providing care and symptom management for clients post cancer. An e-survey was mailed to approximately 21, 000 CAM practitioners, targeted at those working with clients who were experiencing consequences of cancer and its treatments. Questions were asked about the main symptoms and concerns of clients, the confidence and current skill levels of practitioners and additional training requirements. Six hundred and twelve practitioners responded to the survey, 507 of whom were working with individuals experiencing the consequences of cancer and its treatments. Forty-five per cent (n = 134) had undertaken training in cancer prior to working with cancer patients, 61% (n = 182) had undertaken courses or study days relative to cancer care in the past two years. The most often treated symptoms or concerns of patients were those of a psychosocial nature, pain management and lymphoedema. CAM practitioners with limited knowledge and training are providing support to cancer survivors, particularly in services where the National Health Service has limited provision. CAM practitioners may fulfil a future role in providing long-term support for cancer survivors; however, in order to properly safeguard patients they are in need of further training and development.

The impact of supportive nursing care on the needs of men with prostate cancer: a study across seven European countries.

BACKGROUND: Prostate cancer is for many men a chronic disease with a long life expectancy after treatment. The impact of prostate cancer therapy on men has been well defined, however, explanation of the consequences of cancer treatment has not been modelled against the wider variables of long-term health-care provision. The aim of this study was to explore the parameters of unmet supportive care needs in men with prostate cancer in relation to the experience of nursing care. METHODS: A survey was conducted among a volunteer sample of 1001 men with prostate cancer living in seven European countries. RESULTS: At the time of the survey, 81% of the men had some unmet supportive care needs including psychological, sexual and health system and information needs. Logistic regression indicated that lack of post-treatment nursing care significantly predicted unmet need. Critically, men's contact with nurses and/or receipt of advice and support from nurses, for several different aspects of nursing care significantly had an impact on men's outcomes. CONCLUSION: Unmet need is related not only to disease and treatment factors but is also associated with the supportive care men received. Imperative to improving men's treatment outcomes is to also consider the access to nursing and the components of supportive care provided, especially after therapy.

Coping with an exulcerated breast carcinoma: an interpretative phenomenological study.

OBJECTIVE: To explore how women living at home with a malignant fungating wound (MFW) cope with such wounds. METHOD: To explore coping through the lived experiences of patients a methodological framework, using Heideggerian hermeneutic phenomenology and semi-structured interviews. Nine patients were interviewed from January until November 2009. RESULTS: The results are divided into two categories: 'living with a MFW' and 'feeling different'. These categories demonstrate how it is to live with the unpredictability, and uncontrollability of a MFW due to symptoms such as malodour, bleeding, exudate, pain and itching. The loss of control of the body boundary due to uncontrollable symptoms led to significant levels of distress and suffering for the patients. Different coping strategies were used to live with this wound. CONCLUSION: This study demonstrates how difficult it is to live and cope with a malignant fungating wound. Coping strategies, including going into isolation, or denying any issues, were used. When taking care of patients with MFWs, strategies need to integrate a palliative, holistic, empathic approach.

The association of clinical and patient factors with chemotherapy-induced peripheral neuropathy (CIPN) in colorectal cancer: secondary analysis of the SCOT trial.

BACKGROUND: Chemotherapy-induced peripheral neuropathy (CIPN) is a common adverse effect of oxaliplatin. CIPN can impair long-term quality of life and limit the dose of chemotherapy. We investigated the association of CIPN over time with age, sex, body mass index, baseline neuropathy, and chemotherapy regimen in people treated with adjuvant oxaliplatin-containing chemotherapy for colorectal cancer. PATIENTS AND METHODS: We carried out secondary analysis of data from the SCOT randomised controlled trial. SCOT compared 3 months to 6 months of oxaliplatin-containing adjuvant chemotherapy in 6088 people with colorectal cancer recruited between March 2008 and November 2013. Two different chemotherapy regimens were used: capecitabine with oxaliplatin (CAPOX) or fluorouracil with oxaliplatin (FOLFOX). CIPN was recorded with the Functional Assessment of Cancer Therapy/Gynaecologic Oncology Group-Neurotoxicity 4 tool in 2871 participants from baseline (randomisation) for up to 8 years. Longitudinal trends in CIPN [averages with 95% confidence intervals (CIs)] were plotted stratified by the investigated factors. Analysis of covariance (ANCOVA) was used to analyse the association of factors with CIPN adjusting for the SCOT randomisation arm and oxaliplatin dose. P < 0.01 was adopted as cut-off for statistical significance to account for multiple testing. RESULTS: Patients receiving CAPOX had lower CIPN scores than those receiving FOLFOX. Chemotherapy regimen was associated with CIPN from 6 months (P < 0.001) to 2 years (P = 0.001). The adjusted ANCOVA coefficient for CAPOX at 6 months was -1.6 (95% CIs -2.2 to -0.9) and at 2 years it was -1.6 (95% CIs -2.5 to -0.7). People with baseline neuropathy scores ≥1 experienced higher CIPN than people with baseline neuropathy scores of 0 (P < 0.01 for all timepoints apart from 18 months). Age, sex, and body mass index did not link with CIPN. CONCLUSIONS: A neuropathy assessment before treatment with oxaliplatin can help identify people with an increased risk of CIPN. More research is needed to understand the CIPN-inducing effect of different chemotherapy regimens.

Radiation induced skin reactions during and following radiotherapy: A systematic review of interventions.

INTRODUCTION: Radiation induced skin reactions (RISR) are a common adverse effect of radiotherapy that can impact on patient quality of life. The aim of this systematic review was to identify new research evidence on interventions for RISR to guide health practitioners on best practice skin care for people receiving radiotherapy. METHODS: A narrative systematic review was adopted including published research since 2014. The MESH search terms used in the 2014 College of Radiographers skin care systematic review were supplemented with terms identified through a pearl growing search technique. RESULTS: Thirty-three studies were identified and reviewed, 13(39.4%) were assessed as having a high risk of bias 6(18.2%) moderate risk of bias, and 13(39.4%) low risk of bias; one pilot study was not assessed. Twenty-one of the studies were randomised controlled trials, 2 feasibility studies, 9 non-randomised trials, and 1 a pilot study. CONCLUSION: Evidence from well conducted studies identified prophylactic use of steroid cream for patients, at high risk of RISR, as being the most efficacious in reducing acute skin reactions. Further research is needed on photo biomodulation therapy, studied within standard dose fractionation schedules, before it is recommended for use in practice. There is insufficient evidence to support the use of barrier films or any topical emollients currently in practice to reduce RISRs. Despite the number of new studies in this area there is limited good comparative research of RISR that accounts for predictive risk and new radiotherapy techniques. IMPLICATIONS FOR PRACTICE: Practitioners are encouraged to risk assess patients prior to radiotherapy to guide interventions and record and monitor patient skin toxicity regularly during treatment, comparing toxicity changes with scores recorded at baseline and support patient self-monitoring of skin reactions.

Assessment of treatment-induced female sexual morbidity in oncology: is this a part of routine medical follow-up after radical pelvic radiotherapy?

BACKGROUND: Oncology follow-up has traditionally prioritised disease surveillance and the assessment and management of symptoms associated with cancer and its treatment. Over the past decade, the focus on late effects of treatment has increased, particularly those that have an adverse effect on long-term function and quality of life. The aim of this research was to explore factors that influence the identification of treatment-induced female sexual difficulties in routine oncology follow-up after radical pelvic radiotherapy. METHODS: A structured observation schedule was used to systematically record topics discussed in 69 radiotherapy follow-up consultations observed over a 5-month period. RESULTS: Analysis suggests that physical toxicity assessment focused on bowel (81%) and bladder (70%) symptoms. Vaginal toxicity was discussed less frequently (42%) and sexual issues were explored in only 25% of consultations. Formal recording of radiation toxicity through assessment questionnaires was limited to patients participating in clinical trials. Surveillance activity and the management of active physical symptoms predominated and psychosocial issues were addressed in only 42% of consultations. INTERPRETATION: Female sexual morbidity after pelvic radiotherapy remains a neglected aspect of routine follow-up and cancer survivorship. Developments in both individual practice and service provision are necessary if the identification and management of treatment-induced female sexual difficulties is to be improved.

High risk of urinary tract infections in post-operative gynaecology patients: a retrospective case analysis.

This study was undertaken to determine the incidence and risk factors related to the occurrence of urinary tract infections (UTIs), post surgery, in women being treated for a gynaecological cancer. A retrospective case analysis of 215 women was conducted using data collected via case review with domains covering known risk factors for the occurrence of urinary infections. Bacteriuria was defined as greater than 10(5) colony-forming units per millilitre. A total of 30.7% of women had a UTI post-operatively. Among these, 75.7% infections were Escherichia coli. Having a catheter in situ for ≤3 days was found to be slightly significant in the formation of a UTI post-operatively (U= 3878, P < 0.05). Having a catheter in situ for ≥7 days was found to be highly significant (χ(2) (1) = 6.602, P < 0.01), with an odds ratio of 2.44. A positive correlation was found between the duration of the catheter in situ and type of UTI (τ= .251, P < 0.01). Although urinary catheterisation is known to be related to hospital-acquired infection, a shorter duration of catheterisation may reduce the risk of possible infection post surgery. Oncology teams need to be more aware of this risk, identify women more likely to be catheterised for longer and use preventative strategies for managing infection, such as silver nitrite-lined catheters.

Supportive care needs of men living with prostate cancer in England: a survey.

Men with prostate cancer have various treatment options depending upon their stage of disease, age and presence of comorbidity. However, these treatments typically induce side effects, which generate currently ill-defined supportive care needs. This study examined the supportive care needs of men with prostate cancer within England. A postal questionnaire survey was conducted in six acute NHS Trusts. Seven hundred and forty-one men with prostate cancer participated. They had been diagnosed 3-24 months prior to the survey and had received various treatments. Men surveyed had specific and significant unmet supportive care needs. Areas of greatest need are related to psychological distress, sexuality-related issues and management of enduring lower urinary tract symptoms. High levels of psychological distress were reported, and those reporting psychological distress reported greater unmet supportive care needs. Unmet sexuality-related need was highest in younger men following radical prostatectomy. Lower urinary tract symptoms were almost universal in the sample. Perceived quality of life varied; men unsure of their remission status reported lowest quality of life. Psychological distress impacts significantly on perceived unmet need and is currently not being assessed or managed well in men living with prostate cancer in England.

Older Age, Early Symptoms and Physical Function are Associated with the Severity of Late Symptom Clusters for Men Undergoing Radiotherapy for Prostate Cancer.

AIMS: To identify symptom clusters and predisposing factors associated with long-term symptoms and health-related quality of life after radiotherapy in men with prostate cancer. MATERIALS AND METHODS: Patient-reported outcomes (PROs) data from the Medical Research Council RT01 radiotherapy with neoadjuvant androgen deprivation therapy trial of 843 patients were used. PROs were collected over 5 years with the University of California, Los Angeles Prostate Cancer Index (UCLA-PCI) and the 36 item Short-Form Health Survey (SF-36). Symptom clusters were explored using hierarchical cluster analysis. The association of treatment dose, baseline patient characteristics and early symptom clusters with the change in severity of PROs over 3 years was investigated with multivariate linear mixed effects models. RESULTS: Seven symptom clusters of three or more symptoms were identified. The clusters were stable over time. The longitudinal profiles of symptom clusters showed the onset of acute symptoms during treatment for all symptom clusters and significant recovery by 6 months. Some clusters, such as physical health and sexual function, were adversely affected more than others by androgen deprivation therapy, and were less likely to return to pretreatment levels over time. Older age was significantly associated with decreased long-term physical function, physical health and sexual function (P < 0.001). Both baseline and acute symptom clusters were significant antecedents for impaired function and health-related quality of life at 3 years. CONCLUSIONS: Men with poorer physical function and health before or during treatment were more likely to report poorer PROs at year 3. Early assessment using PROs and lifestyle interventions should be used to identify those with higher needs and provide targeted rehabilitation and symptom management.

Education in Europe: are cancer nurses ready for the future?

Much has been written about the need for continuing professional development for nurses to enhance practice and promote quality-nursing care. However, little has been written about the challenges faced by European nurses in keeping up-to-date with health care developments in relation to specialist areas. Educators providing courses are currently facing many challenges; not only the increasing costs of specialist education provision, distance learning, but also the ever increasing changes in health care requiring modification of specialist nursing skills and knowledge within curriculum. This means that educators need to rethink approaches to teaching and learning and links with practice. One of the challenges for the future is how to shift the skills needed for support of cancer patients out into the community , providing quality care for those requiring outpatient and ambulatory cancer care provision. However, continuing professional development is often encouraged as a mechanism for delivering service training rather perceived as developmental for the individual. The European Oncology Nursing Society (EONS) as a society has grasped the initiative for educational development with educational needs analysis, a curriculum identifying practice as central to learning, practice-related topics such as TITAN and the development of education for cancer in older people. There are enormous possibilities opening up within health care for us to develop cancer nursing in many settings and contexts, not only as a result of improved survival and treatments but because vocational education is being scrutinised as part of the Bologna agreement. Lastly, educationalists need to grasp these opportunities and take the initiative and strengthen education for nurses who don't know they need it. Improvements in specialist cancer care are shared and lessons learnt can translate into other nursing services so that we can provide better care for cancer patients throughout their cancer journey.

Self-reported competence in long term care provision for adult cancer survivors: A cross sectional survey of nursing and allied health care professionals.

BACKGROUND: Cancer survival is increasing as patients live longer with a cancer diagnosis. This success has implications for health service provision in that increasing numbers of adults who have received cancer therapy are requiring monitoring and long-term health care by a wide range of practitioners. Given these recent trends there is a need to explore staff perceptions and confidence in managing the consequences of cancer diagnosis and treatment in cancer survivors to enhance an integrated cancer service delivery. OBJECTIVE: This study examines the self-reported perceptions of competence in nurses and professionals allied to medicine providing survivorship services caring for adults after cancer treatment in both secondary and primary care. DESIGN: A cross sectional survey of the adult cancer workforce using a self-assessment tool for assessing confidence in providing long-term cancer patient management. This study was a health service evaluation. SETTING: The study was conducted within the United Kingdom. PARTICIPANTS: Respondents were 618 health care professionals of these 368 were specialist adult cancer nurses in oncology and the community setting and 250 cancer allied health professionals. METHOD: The survey tool was developed with experts in cancer management, nurses professionals allied to medicine such as physiotherapists and dieticians, educationalists, patient groups as well as health service managers. Competence was assessed in 4 domains clinical practice, symptom management, care co-ordination and proactive management. Perceptions of training needs were also ascertained. Data were collected using an Internet survey distributed through cancer services, community settings and professional institutions. RESULTS: In total 618 practitioners who responded were providing services for adults' 1-year post cancer therapy. Practitioners felt confident in managing psychosocial care and communicating with patients. Deficits in self-reported confidence were found in long-term medications management, care planning, long-term and complex symptom management, for those providing dimensions of care coordination and proactive care. Differences in confidence were seen between practitioner groups. Community nurses felt less skilled in managing adult cancer patients long-term. CONCLUSIONS: Nurses and allied health professionals self-reported confidence, in managing all areas of care for adult cancer survivors, is variable with deficits in important areas of practice. Despite this being a small proportion of practitioners who are working in cancer care, those responding had perceived gaps in knowledge and educational needs. In providing cancer aftercare there is a requisite shift to proactive care, supported self-management and collaborative management if patient's long-term consequences of cancer and its treatment are to be addressed. IMPLICATIONS FOR PRACTICE: If health care providers are to transform cancer survivor services then investment is required in education and capability planning across nurses, allied health professionals in both the hospital and the community setting.

Patient-reported Outcome Measures in Radiotherapy: Clinical Advances and Research Opportunities in Measurement for Survivorship.

Patient-reported outcome measures (PROMs) are a useful way of recording patient perceptions of the impact of their cancer and the consequences of treatment. Understanding the impact of radiotherapy longer term requires tools that are sensitive to change but also meaningful for patients. PROMs are useful in defining symptom severity but also the burden of illness for cancer patients. Patient-reported outcomes are increasingly being seen as a way to improve practice by enhancing communication, improving symptom management as well as identifying patient care needs. This paper provides an overview of the use of PROMs in radiotherapy and considerations for tool choice, analysis and the logistics of routine data collection. Consistent assessment is essential to detect patient problems as a result of radiotherapy, but also to address emerging symptoms promptly.

Bone Health and Pelvic Radiotherapy.

Survivors who have received pelvic radiotherapy make up many of the long-term cancer population, with therapies for gynaecological, bowel, bladder and prostate malignancies. Individuals who receive radiotherapy to the pelvis as part of their cancer treatment are at risk of insufficiency fractures. Symptoms of insufficiency fractures include pelvic and back pain and immobility, which can affect substantially quality of life. This constellation of symptoms can occur within 2 months of radiotherapy up to 63 months post-treatment, with a median incidence of 6-20 months. As a condition it is under reported and evidence is poor as to the contributing risk factors, causation and best management to improve the patient's bone health and mobility. As radiotherapy advances, chronic symptoms, such as insufficiency fractures, as a consequence of treatment need to be better understood and reviewed. This overview explores the current evidence for the effect of radiotherapy on bone health and insufficiency fractures and identifies what we know and where gaps in our knowledge lie. The overview concludes with the need to take seriously complaints of pelvic pain from patients after pelvic radiotherapy and to investigate and manage these symptoms more effectively. There is a clear need for definitive research in this field to provide the evidence-based guidance much needed in practice.

Effect of acute normovolemic hemodilution on distribution of blood flow and tissue oxygenation in dog skeletal muscle.

Acute normovolemic hemodilution (ANH) is efficient in reducing allogenic blood transfusion needs during elective surgery. Tissue oxygenation is maintained by increased cardiac output and oxygen extraction and, presumably, a more homogeneous tissue perfusion. The aim of this study was to investigate blood flow distribution and oxygenation of skeletal muscle. ANH from hematocrit of 36 +/- 3 to 20 +/- 1% was performed in 22 splenectomized, anesthetized beagles (17 analyzed) ventilated with room air. Normovolemia was confirmed by measurement of blood volume. Distribution of perfusion within skeletal muscle was determined by using radioactive microspheres. Tissue oxygen partial pressure was assessed with a polarographic platinum surface electrode. Cardiac index (3.69 +/- 0.79 vs. 4.79 +/- 0.73 l. min-1. m-2) and muscle perfusion (4.07 +/- 0.44 vs. 5.18 +/- 0.36 ml. 100 g-1. min-1) were increased at hematocrit of 20%. Oxygen delivery to skeletal muscle was reduced to 74% of baseline values (0.64 +/- 0.06 vs. 0.48 +/- 0.03 ml O2. 100 g-1. min-1). Nevertheless, tissue PO2 was preserved (27.4 +/- 1.3 vs. 29.9 +/- 1. 4 Torr). Heterogeneity of muscle perfusion (relative dispersion) was reduced after ANH (20.0 +/- 2.2 vs. 13.9 +/- 1.5%). We conclude that a more homogeneous distribution of perfusion is one mechanism for the preservation of tissue oxygenation after moderate ANH, despite reduced oxygen delivery.

Somnolence syndrome in adults following cranial irradiation for primary brain tumours.

The purpose of this study was to assess the incidence, pattern and severity of somnolence and fatigue in patients treated with cranial irradiation for primary brain tumours and to identify factors that may influence or mediate symptoms. A detailed prospective study was carried out of 19 patients who received high-dose (45-55 Gy) cranial irradiation as treatment for primary brain tumours. Data were collected for each patient over a 3 month period using a prospective diary utilizing visual analogue scales of common somnolence symptoms and fatigue, and detailed interviews at 2, 6 and 12 weeks following the completion of treatment. Sixteen patients developed somnolence syndrome following treatment. Time series analysis identified a cyclical pattern to the symptoms, with a period of drowsiness and fatigue occurring from day 11 to day 21 and from day 31 to day 35 after radiotherapy. The principal symptoms were those of excessive drowsiness, feeling clumsy, an inability to concentrate, lethargy, being mentally slow and fatigue. Patients treated with accelerated (n = 11) compared with more conventional (n = 8) fractionation experienced more severe drowsiness and fatigue (P < 0.01), although there was no difference in the pattern or the incidence of symptoms. Interview data suggested that patients frequently attributed their symptoms of somnolence to 'flu or other ailments. The unexplained and overwhelming nature of the symptoms was a cause of anxiety. The prospective assessment of symptoms following radiotherapy highlighted a more detailed definition of the symptom complex and pattern of occurrence. Somnolence syndrome is a collection of symptoms consisting of drowsiness, lethargy and fatigue. Forewarning patients and planning supportive management around times of drowsiness and fatigue can help to reduce the anxiety that these symptoms cause.

Effects of hemodilution on splanchnic perfusion and hepatorenal function. I. Splanchnic perfusion.

Perfusion of intestinal organs increases in response to acute normovolemic hemodilution (ANH). However, detailed studies on distribution of regional splanchnic organ perfusion during ANH are lacking. We therefore carried out this study to test the hypothesis that ANH does not cause disturbance of physiologic patterns of regional splanchnic organ blood flow. After governmental permission, 22 anesthetized dogs were instrumented to allow invasive hemodynamic measurements and intracardial injection of radioactive microspheres (diameter 15 micro m) for determination of regional organ perfusion. Measurements were made at baseline (hematocrit 37 +/- 3%) and after ANH with 6% hydroxyethyl starch (mol. wt. 200000 / 0.5) to hct 20 +/- 1%. After completion of the protocol, splanchnic organs were removed and dissected into small samples according to anatomical and functional principles. Regional perfusion was determined based on the microsphere content of each sample. Hepatic, intestinal, and pancreatic blood flow increased with ANH. Hepatic arterial blood flow rose by 86%, whereas portal venous perfusion increased by 28%. Small intestine mucosal perfusion was augmented by 68% while the non-mucosal tissue compartment of the gut wall received 32% more blood flow after ANH which is in proportion to the increase in cardiac index after ANH. This redistribution of intestinal flow might be the basis for the preservation of tissue oxygenation during moderate isovolemic anemia.

Effects of hemodilution on splanchnic perfusion and hepatorenal function. II. Renal perfusion and hepatorenal function.

Hepatorenal perfusion and function were assxssed in 22 dogs undergoing acute normovolemic hemodilution (ANH) to a hematocrit (Hct) of 20% using 6% hydroxyethyl starch (200.000/0.5) as the diluent. Organ perfusion was determined with the radioactive microspheres method. Renal function was assessed by urinary output, creatinine clearance and fractional sodium excretion. Blood volume as well as hepatic function were derived from indocyanine green (ICG) dilution kinetics. Hepatocellular integrity was determined by serum enzymatic activity of glutamate-oxalacetate-transaminase (GOT) and glutamate-pyruvate- transaminase (GPT). ANH to Hct 20% did not change blood volume and mean aortic pressure, while heart rate was slightly elevated (p<0.05) by 5 beats per minute and cardiac output increased by 29% (p<0.05). In contrast to the liver, where arterial and portal venous blood flow increased (86% and 28%, respectively; p<0.05), total renal blood flow as well as intraorgan distribution of renal blood flow remained unchanged post-ANH. While creatinine clearance remained unchanged following ANH, urinary output and fractional urinary excretion increased (p<0.05). In response to enhanced hepatic blood flow after ANH, intravascular half-life of ICG was reduced (p<0.05) and ICG clearance increased (p<0.05). Serum enzymatic activity of GPT decreased upon ANH (p<0.05), while GOT activity remained unchanged. ANH to a Hct 20% does not impair hepatorenal function. Increased urinary output points out the necessity for proper adjustment of crystalloid infusion to maintain normal intravascular volume and avoid hypovolemia and the associated risk of tissue hypoxia.