Measuring scattering distributions in scanning helium microscopy

A scanning helium microscope typically utilises a thermal energy helium atom beam, with an energy and wavelength (¡100meV, ∼0.05 nm) particularly sensitive to surface structure. An angular detector stage for a scanning helium microscope is presented that facilitates the in-situ measurement of scattering distributions from a sample. We begin by demonstrating typical elastic and inelastic scattering from ordered surfaces. We then go on to show the role of topography in diffuse scattering from disordered surfaces, observing deviations from simple cosine scattering. In total, these studies demonstrate the wealth of information that is encoded into the scattering distributions obtained with the technique.

An electronic medical record reminder is independently associated with improved opportunistic influenza vaccination rates for older inpatients

BACKGROUND

Influenza vaccination will have added importance this winter given the possibility of further waves of the COVID-19 pandemic. This study examines the impact of an electronic medical record (EMR) reminder on influenza vaccine uptake among eligible hospital inpatients.

METHODS

We included a convenience sample of 750 adults (median age 77 years) who are eligible for influenza vaccination (⩾65 years and/or length of stay >30 days). A live electronic dashboard identified patients eligible for vaccination, prompting reminders sent to the clinical teams via the EMR.

RESULTS

The EMR reminder was associated with almost a 50% higher likelihood of vaccination after adjusting for other covariates (odds ratio 1.48 (95% confidence interval 1.00-2.20); p = 0.048).

DISCUSSION

Reminders sent to the clinical team via the EMR appear to be an effective means of increasing vaccine uptake and should be considered as part of this year's drive to vaccinate eligible patients in hospital.

Electroconvulsive Therapy’s use in Idiopathic Intracranial Hypertension with Mood Disorder: caution, promise, and progress

Introduction

Idiopathic Intracranial Hypertension (IIH) is a condition characterized by an increase of intracranial pressure (ICP) with no identifiable cause to date. One-half of patients who suffer from IIH have co-morbid mood disorders, such as Major Depressive Disorder (MDD), that can be refractory to pharmacologic treatment. Electroconvulsive Therapy (ECT) is a safe and effective treatment for treatment-refractory mood disorder, but possesses a relative contra-indication for IIH due to its theoretical increase in ICP. Can ECT become the gold-standard treatment modality for mood disorder from IIH?

Objectives

We aim to synthesize and summarize the state of the literature surrounding the intersection of ECT and IIH. We will present notable findings and propose avenues for future investigation.

Methods

We conducted a literature review using PubMed’s search function. Key terms that were queried are as follows: Idiopathic Intracranial Hypertension, Pseudotumor Cerebri, Benign Intracranial Hypertension, Mood Disorder, Major Depressive Disorder, ECT, Electroconvulsive Therapy.

Results

The prevailing theory of IIH and mood disorder centers around HPA axis dysfunction, which has been heavily theorized to be positively impacted with ECT. ECT itself may not increase the ICP, but the anesthesia might. The only two case reports in the literature presented safe and successful use of ECT’s in patients with IIH and MDD.

Conclusions

More data is needed to draw conclusions, as the literature surrounding ECT’s use in patients with IIH remains sparse. Further studies must explore whether ECT’s use in IIH remains effective. Through this, we may understand more about both IIH and ECT itself.

Disclosure

No significant relationships.

Emerging Catatonia and Psychosis in Resolving COVID-19 Infection in an Adolescent

Introduction

COVID-19 infection may lead to encephalopathy and various neurotrophic effects which can result in neuropsychiatric complications. Here, an asymptomatic adolescent female developed acute onset catatonia and psychosis manifesting during the resolution of Covid-19 infection.

Objectives

Discuss differential diagnosis, medical workup, and initial treatment optimization for acute stabilization.

Methods

This 15-year-old female with no previous psychiatric history nor prodromal symptomatology was hospitalized secondary to Covid -19. During the immediate three-month recovery phase following resolution of Covid-19, the patient exhibited gradually increasing anxiety, paranoia, delusions, disorganized behavior, and weight loss leading to re-hospitalization secondary to catatonia. Negative workup included rapid strep test, urinalysis, chest and abdominal x-ray, EEG, and brain MRI. Lumbar puncture revealed elevated WBC of 18 but was unremarkable for NDMA receptor antibodies, CSF HSV, and encephalitis panel. IV steroids, IVIG, and Anakinra were all given without benefit. Inadequate response to olanzapine, clonidine, and lorazepam led to an Index Series of bilateral electroconvulsive therapy (ECT).

Results

The provisional diagnosis of psychotic disorder secondary to COVID-19 infection responded robustly regarding sleep, behavior, and affect by session #6, yet positive symptoms of psychosis persist. Ongoing ECT, psychopharmacology, and narrowing of the differential diagnosis continue.

Conclusions

As more COVID-19 cases evolve during the pandemic, potential post-infectious neuropsychiatric complications should be considered as potentially contributory and kept in a thoughtful differential diagnosis. Regardless of ultimate causation, the acute symptom profile responded robustly to an initial Index Series of ECT.

Disclosure

No significant relationships.

Late 1800s Fringe Electrotherapeutic Devices: Comparative Electrical Capabilities

Introduction

Desperation for cure led to 19^th century invention-- electrotherapeutic devices; replete with hyperbolic claims of cure-all, perceived ineffectiveness, and potential harm rendered the modality as quackery but were used in early brain stimulation, melancholia treatment, and cortex mapping. Here, antique devices are restored, and their electrophysiological qualities ascertained.

Objectives

Determine the comparative capabilities of these devices in delivering electrostimulation and compare with modern standards to understand possible electrophysiological sequelae.

Methods

Devices known as “medical batteries” were analyzed. Power delivery utilized a “voltaic battery”, simple circuit, and a conductor wrapped around an iron core. When the circuit is energized, the core is magnetized by direct current of the battery which induces an alternating current that electrifies probes used on the body. Due to their marked age, a common 9-volt battery was exchanged for the corrosive dry cell paste batteries. Electrical parameters were then measured.

Results

Table 1

Device	Frequency (Hz)	Resistance (Ohms)	Max Output (Amps)	Min Output (Amps)	Max Output (Volts)	Min Output (Volts)
Voltampa	2k – 12K	60	0.66	0.33	60V	20V
J.H. Bunnell & Co.’s No. 4 D.D.	7k-10k	50	6	0.4	300V	20V
Schall & Son (London)b	300-1200	40	10.5	2.75	420V	110V

Conclusions

Devices for electrotherapeutics ranged from anemic vibrations to dangerous tetany inducing shocks. Measuring the capabilities of these devices shows the robust yields possible if the original higher capacity batteries were utilized. The reality is, cure or not, the devices were surprisingly potent. It is interesting that, albeit unrefined, efficacious doses were available before modern electrification.

Disclosure

No significant relationships.

Collapse

Paradoxical Neuroethical Crisis of Agency and Identity in an Obsessive-Compulsive Disorder Deep Brain Stimulation Patient

Introduction

Deep Brain Stimulation is an increasingly viable, well-established treatment for medication refractory obsessive-compulsive disorder. Yet, its neuromodulatory effects on the brain have led to varying and opposing neuroethical debates about its potential influence on a range of phenomena such as human agency, sense of nonauthenticity and identity.

Objectives

Establish the importance of maintaining the psychotherapeutic alliance in a long-term DBS patient who reported minimal device side effect and no brain-technology interface interpersonal issues; yet struggled with a paradoxical phenomenon of psychic distress surrounding issues of agency and identity, not through device implantation, but through morphology of cognitions from negativistic interpersonal dynamics and spousal victim-blaming due to the necessity for such a device.

Methods

Case-report of a 60+-year-old gentleman with a history of childhood-onset, treatment refractory OCD with a 15-year history of bilateral DBS lead placed via a ventral caudate/ ventral striatum trajectory through the anterior limb of the internal capsule to the nucleus accumbens.

Results

Years later he was only minimally improved above baseline; yet now with a few-years increasing degree of distress over a perceived atrophy of his capabilities that he felt was validated through what he described as his failure of artificial bionics. Extensive device setting re-optimization did not improve efficacy and with supportive therapy, the DBS device was weaned, and turned off.

Conclusions

The following year the therapeutic foci were on interpersonal identity, existential acceptance of breakthrough symptoms, and engagement of spouse into marital counseling leading to subsequent resolution of distress with improved quality of life.

Disclosure

No significant relationships.

Constraints on primordial black holes

We update the constraints on the fraction of the Universe that may have gone into primordial black holes (PBHs) over the mass range 10^-5to 10⁵⁰ g. Those smaller than ∼10¹⁵ g would have evaporated by now due to Hawking radiation, so their abundance at formation is constrained by the effects of evaporated particles on big bang nucleosynthesis, the cosmic microwave background (CMB), the Galactic and extragalacticγ-ray and cosmic ray backgrounds and the possible generation of stable Planck mass relics. PBHs larger than ∼10¹⁵ g are subject to a variety of constraints associated with gravitational lensing, dynamical effects, influence on large-scale structure, accretion and gravitational waves. We discuss the constraints on both the initial collapse fraction and the current fraction of the dark matter (DM) in PBHs at each mass scale but stress that many of the constraints are associated with observational or theoretical uncertainties. We also consider indirect constraints associated with the amplitude of the primordial density fluctuations, such as second-order tensor perturbations andμ-distortions arising from the effect of acoustic reheating on the CMB, if PBHs are created from the high-σpeaks of nearly Gaussian fluctuations. Finally we discuss how the constraints are modified if the PBHs have an extended mass function, this being relevant if PBHs provide some combination of the DM, the LIGO/Virgo coalescences and the seeds for cosmic structure. Even if PBHs make a small contribution to the DM, they could play an important cosmological role and provide a unique probe of the early Universe.

Efficacy of color lenses in abolishing photosensitivity: Beyond the one-type-fits-all approach?

OBJECTIVE

Red-light filtering lenses represent an additional option to medication in photosensitive epilepsy. Blue lenses (Clarlet Z1 F133) can dramatically reduce seizure frequency, with a substantial restriction in luminance that can limit their applicability in daily life. We investigated the efficacy of 4 blue lenses with higher transmittance and reduced chromatic distortion in abolishing the photoparoxysmal EEG response (PPR) compared to the gold-standard Z1 lenses.

METHODS

We reviewed EEG data during photic-and pattern stimulation in 19 consecutive patients (6-39 years) with photosensitivity (PS). Stimulation was performed at baseline and while wearing Z1 and the four new lenses. Lenses were tested in the same session by asking the patient to wear them in a sequentially randomized fashion while stimulating again with the most provocative photic/pattern stimuli. The primary outcome was the change in the initial PPR observed for each lens, categorized as no change, reduction, and abolition.

RESULTS

Photosensitivity was detected in 17 subjects (89.5%); pattern sensitivity (PtS) was identified in 14 patients (73.7%). The highest percentages of PPR abolition/reduction were observed with Z1, for both PS and PtS. Regarding the new lenses, B1 + G1 offered the best rates, followed by B1 + G2. B1 + G3 and B1 showed lower efficacy rates, particularly for PtS. In the comparative analysis, no significant differences in PPR suppression were detected between the five lenses for PS. For PtS, the capacity of Z1 for PPR abolition was significantly higher compared with B1 + G3 and B1.

CONCLUSIONS

This preliminary study suggests efficacy of the new group of blue lenses with potentially greater tolerability, particularly in regions with fewer sunlight hours during winter. In line with the current trend for personalized approach to treatment, this study suggests that in some patients there might be scope in extending the testing to offer the lens with the higher transmittance effective in abolishing the PPR.

Impact of cardiac rehabilitation on 3 year outcomes amongst patients after acute coronary syndrome: (ACS) SNAPSHOT ACS follow-up study

Background

Cardiovascular disease is the leading cause of disease burden globally. With advancements in medical and surgical care more people are surviving initial acute coronary syndrome (ACS) and are in need of secondary prevention and cardiac rehabilitation (CR). Increasing availability of high quality individual-level data linkage provides robust estimates of outcomes long-term.

Purpose

To compare 3 year outcomes amongst ACS survivors who did and did not participate in Australian CR programs.

Methods

SNAPSHOT ACS follow-up study included 1806 patients admitted to 232 hospitals who were followed-up by data linkage (cross-jurisdictional morbidity, national death index, Pharmaceutical Benefit Schedule) at 6 and 36 months to compare those who did/not attend CR.

Results

In total, the cohort had a mean age of 65.8 (13.4) years, 60% were male, only 25% (461/1806) attended CR. During index admission, attendees were more likely to have had PCI (39% v 14%, p<0.001), CABG (11% v 2%, p<0.001) and a diagnosis of STEMI (21% v 5%, p<0.001) than those who did not attend. However, there was no significant difference between CR attendees/non-attendees for risk factors (LDL-cholesterol, smoking, obesity). Only 19% of eligible women attended CR compared to 30% of men (p<0.001). At 36 months, there were fewer deaths amongst CR attendees (19/461, 4.1%) than non-attendees (116/1345, 8.6%) (p=0.001). CR attendees were more likely to have repeat ACS, PCI, CABG at both 6 and 36 months (Table). At 36 months, CR attendees were more likely to have been prescribed antiplatelets (78% v 53%, p<0.001), statins (91% 73%, p<0.001), beta-blockers (11% v 13%, p=0.002) and ACEI/ARBs (72% v 61%, p<0.001) than non-attendees.

Conclusions

Amongst Australian ACS survivors, participation in CR was associated with less likelihood of death and increased prescription of pharmacotherapy. However, attendance at CR was associated with higher rates of repeat ACS and revascularisation.

Funding Acknowledgement

Type of funding source: Foundation. Main funding source(s): New South Wales Cardiovascular Research Network, National Heart Foundation

Maternal mental health and partner delivered massage: a pilot study

Background

Mental health problems place a significant burden on the health system and are an important public health issue. Many pregnant women experience anxiety and depression, which can negatively impact health outcomes for both mother and baby. Partner-delivered massage may provide a cost effective and accessible approach to support the mental wellbeing of pregnant women.

Methods

A feasibility randomised controlled trial was conducted to compare partner-delivered relaxation massage (intervention) with a self-directed stress management program (control), for pregnant women with mild anxiety. Women attended an initial workshop at 28-32 weeks gestation, followed by the completion of either the self-directed massage or stress management program. Qualitative feasibility and acceptability data (primary outcomes) were collected via online participant diaries and post-birth interviews. Anxiety, depression and stress symptoms (secondary outcomes) were assessed using the Depression and Anxiety Stress Scale (DASS-21).

Results

14 women/partner dyads attended the partner- delivered massage group and 13 women attended the self-directed stress management group. Participants from both groups reported the programs were feasible and acceptable. Mean scores on all DASS-21 subscales significantly decreased over time in both the intervention and the control group.

Conclusions

The partner-delivered massage program was feasible and acceptable. Both programs decreased women's symptoms of anxiety, depression and stress, with no significant between-group differences identified. An adequately powered, experimental study is needed to determine the effectiveness of partner-delivered relaxation massage.

Key messages

Many women experience anxiety and depression during pregnancy and this can have a negative impact on both mother and baby. Partner-delivered relaxation massage, at least once a week in the third trimester, may help reduce women’s symptoms of anxiety, depression and stress.

The effectiveness of massage for reducing pregnant women's anxiety and depression; systematic review and meta-analysis

OBJECTIVE

To critically appraise and synthesize the best available evidence on the effectiveness of massage to reduce antenatal women's anxiety and/ or depression.

DESIGN

Systematic review with meta-analysis PARTICIPANTS, INTERVENTIONS: Pregnant women over the age of 18 years who receive massage interventions.

MEASUREMENTS AND FINDINGS

Eight studies were included in the review; seven were randomized controlled trials. Data were collected via pregnant women's self-reported ratings of anxiety or depression using validated tools. Meta-analysis of four studies revealed a moderate effect of massage therapy on women's depressive symptoms as measured by the Center for Epidemiologic Studies Depression Scale (CES-D) (MD = -5.95, 95%CI = -8.11 to -3.80, I² = 0%) compared with usual care. A moderate effect of massage interventions on women's anxiety were also found based on five studies using various measures (SMD = -0.59, 95%CI = -1.06 to -0.12, I² = 75%) when compared with usual care. However, none of the trials had a low risk of bias.

KEY CONCLUSIONS

Non-pharmacologic treatments for mental health symptoms are an important option for women to use during pregnancy. As shown in meta-analysed data, massage therapy might be more effective in reducing pregnant women's anxiety and depression than usual care, although the current results may be prone to bias. Further high-quality research is required to fully evaluate the impact of massage therapy on pregnant women's mental health symptoms in the immediate and also longer term.

IMPLICATIONS FOR PRACTICE

Massage therapy may be an acceptable and feasible approach for pregnant women to employ to reduce their anxiety and depressive symptoms. More research evidence examining the safety and effectiveness of massage is required before practice recommendations can be made.

Clinical outcomes and adverse events in patients hospitalised with COVID-19, treated with off-label hydroxychloroquine and azithromycin

AIMS

To assess clinical outcomes and adverse drug events in patients hospitalised with COVID-19 treated with off-label hydroxychloroquine (HCQ) and azithromycin (Az).

METHODS

We performed a retrospective analysis of hospitalised patients who had a positive polymerase chain reaction test for SARS-CoV-2 and received HCQ plus Az or no targeted therapy. The primary end point was clinical improvement on day 7 defined as either hospital discharge or an improvement of 2 points on a 6-category ordinal scale. Secondary outcomes included mortality at day 28, intensive care admission, requirement for mechanical ventilation and incidence of adverse events.

RESULTS

Data from a total of 134 patients were evaluated; 82 patients received HCQ/Az and 52 patients received no targeted therapy. Clinical improvement was seen in 26.8% of patients who received HCQ/Az but this was not significant. The rates of intensive care transfer and mechanical ventilation were higher in the treatment group, but these differences were not significant. Mortality at day 28 was significantly higher in the treatment group (P = .03). Hypoglycaemia elevated liver function tests and QT prolongation were monitored in both groups. The risk of QT prolongation was significantly higher in the treatment group. Treatment was stopped early in 6 (7.3%) patients due to adverse events.

CONCLUSION

Although patients who received HCQ/Az were more severely ill the administration of these repurposed drugs did not result in clinical improvement and was associated with a significant increase in toxicity. This descriptive study highlights the importance of monitoring all repurposed agents for adverse events.

338 Evaluation of a new clinical pharmacy service model in a University Teaching hospital in Dublin, Ireland

Background

Advances in medicines reconciliation, drug monitoring and patient counselling requirements as well as added non-clinical responsibilities at ward level have led to an increased workload on a ward-based pharmacist. There is a need to optimise the service to meet these demands.

The aim of this study was to audit the current clinical pharmacy services and to implement a New Model of Clinical Pharmacy on four wards to aid in the optimisation and prioritisation of patients during the clinical ward service.

Methods

The study was undertaken in Dublin based, University Teaching Hospital between March and June 2018. The study included the following: (1) a comprehensive literature review, (2) focus groups with key decision makers, (3) the collection and analysis of quantitative data on patients screening and interventions performed pre- and post- model implementation, (4) the final stage involved a satisfaction surveys from pharmacists involved in the study. Local ethical approval was obtained for this study.

Results

The new clinical pharmacy model increased the amount of medicines reconciliation completed (pre-model implementation 77.7% (n=192) versus post-model implementation 81.6% (n=236)), decreased time to medication reconciliation completion on Mondays and Fridays, increased discharge information cards completed and did not show statistical inferiority in the amount of interventions picked up by pharmacists (p value= 0.86; two tailed t-test). Pharmacists in the study felt the model impacted their clinical ward visit positively and aided prioritisation but did not improve on their overall job satisfaction level.

Conclusion

The study shows that a new model of clinical pharmacy can impact positively on a pharmacist’s working day by formalising the prioritisation of high-risk patients, setting clear expectations and structure without impacting negatively on other clinical duties. It is believed that the model developed will continue to support the pharmacists’ decision making and workload prioritisation post implementation of electronic prescribing.

Erratum to: 36th International Symposium on Intensive Care and Emergency Medicine: Brussels, Belgium. 15-18 March 2016

[This corrects the article DOI: 10.1186/s13054-016-1208-6.].

Abstract P4-02-12: Breast MRI: Enhancing pre-operative planning in women with newly diagnosed breast cancer

Hypothesis:

Preoperative breast MRIs in newly diagnosed breast cancer patients may lead to additional findings, including larger disease involvement, thus leading to a change in the operative plan. This information can led to better surgical planning and decreased rates of surgical re-excisions.

Methods:

This was a single surgeon, single institution, retrospective analysis of women with newly-diagnosed breast cancer who had surgery between December 2013 and December 2014. A total of ninety-six patients underwent preoperative breast MRI. Exclusion criteria were patient's refusal of MRI or surgery, contraindication to MRI based on implants or body habitus, and male patients.

Results:

Overall, breast MRI most closely correlated to pathological tumor size (gold standard). MRI had a 64% correlation with pathology size, whereas mammography and ultrasound correlation were 44% and 43% respectively. As breast density increased, MRI correlation to pathologic tumor size improved. For breast density between 25-50%, tumor size by MRI correlated with pathology size in 27% of patients, mammogram correlation was 33% and ultrasound was 12%. When breast density increased to 51-75%, MRI correlation improved to 92%, whereas mammogram correlation was 56% and ultrasound was 68%. The majority of patients fell within these two density categories; correlation for breast density <25% and >75% were not statistically significant. Of the breast biopsies preformed for MRI abnormalities not otherwise identified by mammography or ultrasound, 42% were positive for invasive cancer or DCIS. Thirty-eight percent of patients had a change in operative plan based on their MRI findings. Of the ninety-six patients, nine were changed from breast conserving surgery to mastectomy, and 29 underwent a larger area of resection than planned prior to MRI, due to findings of more extensive disease on MRI not otherwise appreciated by mammography or ultrasound.

Conclusion:

Pre-operative MRI played a significant role in the pre-surgical evaluation of patients with newly diagnosed breast cancer. In our series, breast MRI demonstrated better correlation with extent of disease compared to other imaging modalities. This is turn enhanced patient and surgeon decision making and led to more precise pre-operative surgical planning.

Citation Format: Carr B, Lamb LC, Zarfos K, Weigert J, Singh R. Breast MRI: Enhancing pre-operative planning in women with newly diagnosed breast cancer. [abstract]. In: Proceedings of the Thirty-Eighth Annual CTRC-AACR San Antonio Breast Cancer Symposium: 2015 Dec 8-12; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2016;76(4 Suppl):Abstract nr P4-02-12.

Geophysical imaging reveals topographic stress control of bedrock weathering

Bedrock fracture systems facilitate weathering, allowing fresh mineral surfaces to interact with corrosive waters and biota from Earth's surface, while simultaneously promoting drainage of chemically equilibrated fluids. We show that topographic perturbations to regional stress fields explain bedrock fracture distributions, as revealed by seismic velocity and electrical resistivity surveys from three landscapes. The base of the fracture-rich zone mirrors surface topography where the ratio of horizontal compressive tectonic stresses to near-surface gravitational stresses is relatively large, and it parallels the surface topography where the ratio is relatively small. Three-dimensional stress calculations predict these results, suggesting that tectonic stresses interact with topography to influence bedrock disaggregation, groundwater flow, chemical weathering, and the depth of the "critical zone" in which many biogeochemical processes occur.

The DEXLIFE study methods: identifying novel candidate biomarkers that predict progression to type 2 diabetes in high risk individuals

The incidence of type 2 diabetes (T2D) is rapidly increasing worldwide and T2D is likely to affect 592 million people in 2035 if the current rate of progression is continued. Today, patients are diagnosed with T2D based on elevated blood glucose, either directly or indirectly (HbA1c). However, the information on disease progression is limited. Therefore, there is a need to identify novel early markers of glucose intolerance that reflect the underlying biology and the overall physiological, metabolic and clinical characteristics of progression towards diabetes. In the DEXLIFE study, several clinical cohorts provide the basis for a series of clinical, physiological and mechanistic investigations in combination with a range of--omic technologies to construct a detailed metabolic profile of high-risk individuals across multiple cohorts. In addition, an exercise and dietary intervention study is conducted, that will assess the impact on both plasma biomarkers and specific functional tissue-based markers. The DEXLIFE study will provide novel diagnostic and predictive biomarkers which may not only effectively detect the progression towards diabetes in high risk individuals but also predict responsiveness to lifestyle interventions known to be effective in the prevention of diabetes.

Gemcitabine-based transcatheter arterial chemoembolization for unresectable cholangiocarcinoma in thirty-eight patients: Single institutional experience

14152

Background: Survival for patients with unresectable cholangiocarcinoma is reported to be 5–8 months. Systemic chemotherapy has been disappointing and not shown to significantly improve survival. Transcatheter arterial chemoembolization (TACE) has been shown to prolong survival in hepatocellular carcinoma patients but experience with cholangiocarcinoma is limited. We report our experience with the well-tolerated drug gemcitabine. Methods: Thirty-eight patients with unresectable cholangiocarcinoma were treated with one or more cycles of gemcitabine-based TACE between 2001 and 2005 at our institution. Follow-up imaging was performed on all patients after each TACE procedure. Regimens of TACE included: gemcitabine only (16), gemcitabine followed by cisplatin (2), gemcitabine followed by oxaliplatin (5), gemcitabine and cisplatin (12), and gemcitabine and cisplatin followed by oxaliplatin (3). Actual survival is reported, as 35 of 38 have died from disease (92%). Results: Patients were 57.5 years of age (range 36–87) and a median of 3 treatments (range 1–10) were administered. Median survival from time of first treatment was 10.3 months. Patients receiving gemcitabine followed by cisplatin or oxaliplatin had improved survival (mean 16.5 and 10.5 months respectively) when compared to gemcitabine alone (mean 6 months). Patients receiving gemcitabine and cisplatin as a combination had improved survival (mean 13.4 months) compared to single agent gemcitabine. Patients who progressed on gemcitabine and cisplatin and then received oxaliplatin also showed improved survival (mean 14.3 months) compared to gemcitabine only. Neutropenia, thrombocytopenia and hyperbilirubinemia were the most common toxicities observed. Three patients in the entire series exhibited grade 3 thrombocytopenia while seven patients had grade 3 and one had grade 4 bilirubin levels. Conclusions: This series provides evidence in favor of TACE rather than historically reported alternatives such as systemic chemotherapy or chemotherapy/RT. Our results suggest that gemcitabine based TACE is well tolerated and perhaps best delivered as a combination therapy for patients with unresectable cholangiocarcinoma.

No significant financial relationships to disclose.