Lotte Hendriks
Radboud University Nijmegen
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Featured researches published by Lotte Hendriks.
European Journal of Psychotraumatology | 2010
Lotte Hendriks; Rianne A. de Kleine; Mirjam van Rees; Carlijn Bult; Agnes van Minnen
Despite the strong empirical support for the effectiveness of exposure-based treatments in ameliorating post-traumatic stress disorder (PTSD), improvement of treatment is wanted given relatively high dropout rates and challenges of treating patients with high comorbidity and treatment-interfering stressors. The purpose of the current paper is to introduce an intensive exposure treatment program, illustrated by four case descriptions of PTSD patients, who suffered multiple (sexual) traumas in childhood, had high levels of comorbidity and psychosocial stressors, and failed to improve during “regular” trauma-focused treatment programs. The program consisted of psychoeducation, prolonged imaginal exposure, exposure in vivo, exposure by drawings combined with narrative reconstructing, and writing assignments about central trauma-related cognitions. The treatment included 5 working days with individual sessions (in total 30 h of treatment) provided by a team of four therapists. The PTSD symptoms of all patients decreased substantially and the effect sizes were large (Cohens d resp. 1.5 [pre–post], 2.4 [pre-FU1 month], and 2.3 [pre-FU3 months]). Also, none of the patients showed symptom worsening or dropped out. The evaluation of these four pilot cases suggests that it is possible to intensify exposure treatment, even for multiple traumatized PTSD patients with high comorbidity. We concluded that the first results of this new, intensive exposure program for PTSD patients with childhood sexual abuse are promising. For abstract or full text in other languages, please see Supplementary files under Reading Tools online
European Journal of Psychotraumatology | 2018
Lotte Hendriks; R.A. de Kleine; Theo G. Broekman; Gert-Jan Hendriks; A. van Minnen
ABSTRACT Background: Suboptimal response and high dropout rates leave room for improvement of trauma-focused treatment (TFT) effectiveness in ameliorating posttraumatic stress disorder (PTSD) symptoms. Objective: To explore the effectiveness and safety of intensive prolonged exposure (iPE) targeting chronic PTSD patients with a likely diagnosis of ICD-11 Complex PTSD following multiple interpersonal trauma and a history of multiple treatment attempts. Method: Participants (N = 73) received iPE in 12 × 90-minute sessions over four days (intensive phase) followed by four weekly 90-minute booster prolonged exposure (PE) sessions (booster phase). The primary outcomes, clinician-rated severity of PTSD symptoms, and diagnostic status (Clinician-Administered PTSD Scale; CAPS-IV) were assessed at baseline, post-treatment, and at three and six months. Treatment response trajectories were identified and predictors of these trajectories explored. Results: Mixed model repeated measures analysis of CAPS-IV scores showed a baseline-to-posttreatment decrease in PTSD symptom severity (p < .001) that persisted during the three- and six-month follow-ups with large effect sizes (Cohen’s d > 1.2); 71% of the participants responded. None of the participants dropped out during the intensive phase and only 5% during the booster phase. Adverse events were extremely low and only a minority showed symptom exacerbation. Cluster analysis demonstrated four treatment response trajectories: Fast responders (13%), Slow responders (26%), Partial responders (32%), and Non-responders (29%). Living condition and between-session fear habituation were found to predict outcome. Participants living alone were more likely to belong to the Partial responders than to the Non-responders cluster, and participants showing more between-session fear habituation were more likely to belong to the Fast responders than to the Non-responders cluster. Conclusions: The results of this open study suggest that iPE can be effective in PTSD patients with multiple interpersonal trauma and after multiple previous treatment attempts. In addition, in this chronic PTSD population iPE was safe.
Journal of Anxiety Disorders | 2017
Rianne A. de Kleine; Lotte Hendriks; Eni S. Becker; Theo G. Broekman; Agnes van Minnen
Exposure therapy has proven efficacy in the treatment of posttraumatic stress disorder (PTSD). Emotional processing theory proposes that fear habituation is a central mechanism in symptom reduction, but the empirical evidence supporting this is mixed. Recently it has been proposed that violation of harm expectancies is a crucial mechanism of action in exposure therapy. But to date, changes in harm expectancies have not been examined during exposure therapy in PTSD. The goal of the current study was to examine harm expectancy violation as mechanism of change in exposure therapy for posttraumatic stress disorder (PTSD). Patients (N=50, 44 female) with a primary diagnosis of chronic PTSD received intensive exposure therapy. Harm expectancies, harm experiences and subjective units of distress (SUDs) were assessed at each imaginal exposure session, and PTSD symptoms were assessed pre- and posttreatment with the Clinician Administered PTSD Scale (CAPS). Results showed that harm expectancies were violated within and strongly declined in-between exposure therapy sessions. However, expectancy violation was not related to PTSD symptom change. Fear habituation measures were moderately related to PTSD symptom reductions. In line with theory, exposure therapy promotes expectancy violation in PTSD patients, but this is not related to exposure therapy outcome. More work is warranted to investigate mechanisms of change during exposure therapy in PTSD.
Journal of the American Geriatrics Society | 2009
Lotte Hendriks; Marijt J. Witteman; Loes J. G. Frietman; Rick B. van Baaren; Gerben Johan Westerhof; Rutger C. M. E. Engels; Ap Dijksterhuis
1. Fisher M. An unusual variant of acute idiopathic polyneuritis (syndrome of ophthalmoplegia, ataxia and areflexia). N Engl J Med 1956;255:57–65. 2. Mori M, Kuwabara S, Fukutake Tet al. Clinical features and prognosis of Miller Fisher syndrome. Neurology 2001;56:1104–1106. 3. Bussin J. Miller Fisher syndrome in an elderly man. Age Ageing 2001;30: 268–269. 4. Lo YL. Clinical and immunological spectrum of the Miller Fisher syndrome. Muscle Nerve 2007;36:615–627. 5. Berlit P, Rakicky J. The Miller Fisher syndrome. Review of the literature. J Clin Neuroophthalmol 1992;12:57–63. 6. Chiba A, Kusunoki S, Shimizu T et al. Serum IgG antibody to ganglioside GQ1b is a possible marker of Miller Fisher syndrome. Ann Neurol 1992;31: 677–679. 7. Yuki N, Taki T, Takahashi M et al. Molecular mimicry between GQ1b ganglioside and lipopolysaccharides of Campylobacter jejuni isolated from patients with Fisher’s syndrome. Ann Neurol 1994;36:791–793. 8. Mori M, Kuwabara S, Fukutake T et al. Intravenous immunoglobulin therapy for Miller Fisher syndrome. Neurology 2007;68:1144–1146.
Journal of Forensic Psychiatry & Psychology | 2018
Pascal Fleurkens; Lotte Hendriks; Agnes van Minnen
Abstract Posttraumatic Stress Disorder (PTSD) resulting from perpetration, is highly prevalent in forensic populations and has been associated with future risk of anger, aggressive behavior, and criminal recidivism. Since forensic psychiatry aims at reducing violence and recidivism, treatment of PTSD in this population is of great importance. Controlled studies to the feasibility and effectiveness of PTSD treatment within forensic populations are lacking. In five case studies, however, feasibility of EMDR is demonstrated in offenders with PTSD and comorbid disorders like psychosis or depression. The present case study aimed to expand this knowledge by describing the application of EMDR to a forensic psychiatric patient with a narcissistic personality disorder with antisocial and borderline features, and PTSD resulting from a murder he committed. Over the course of EMDR, PTSD symptoms (both established by clinical interview and self-report) decreased. Posttreatment, the patient did not meet the criteria for PTSD anymore. Importantly, results were maintained during eight months follow-up and no adverse events took place. The results of this case study offer strong support for a randomized controlled study.
European Journal of Psychotraumatology | 2018
Agnes van Minnen; Lotte Hendriks; Rianne A. de Kleine; Gert-Jan Hendriks; Marije Verhagen; Ad de Jongh
ABSTRACT Background: Trauma-focused treatments (TFTs) for patients with post-traumatic stress disorder (PTSD) are highly effective, yet underused by therapists.Objective: To describe a new way of implementing (adequate use of) TFTs, using a therapist rotation model in which one patient is treated by several therapists.Method: In this article, we will present two examples of working with therapist rotation teams in two treatment settings for TFT of PTSD patients. We explore the experiences with this model from both a therapist and a patient perspective.Results: Our findings were promising in that they suggested that this novel approach reduced the therapists’ fear of providing TFT to PTSD patients, increased perceived readiness for TFT, and decreased avoidance behaviour within TFT sessions, possibly leading to better implementation of TFT. In addition, the therapeutic relationship as rated by patients was good, even by patients with insecure attachment styles.Conclusions: We suggest that therapist rotation is a promising novel approach to improve implementation of TFT for PTSD.
Behaviour Research and Therapy | 2010
Agnes van Minnen; Lotte Hendriks; Miranda Olff
Journal of Child Psychology and Psychiatry | 2017
Lotte Hendriks; Rianne A. de Kleine; Mieke Heyvaert; Eni S. Becker; Gert-Jan Hendriks; Agnes van Minnen
Martin, C.; Preedy, V.; Patel, V. (ed.), Comprehensive guide to post-traumatic stress disorders | 2015
Lotte Hendriks; R.A. de Kleine; Gert-Jan Hendriks; A. van Minnen
Archive | 2014
Lotte Hendriks; A. van Minnen; Eni S. Becker; R.A. de Kleine; Gert-Jan Hendriks; Mieke Heyvaert