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1.
Eur Heart J Qual Care Clin Outcomes ; 9(1): 1-7, 2022 12 13.
Article in English | MEDLINE | ID: mdl-36316010

ABSTRACT

AIMS: To develop quality indicators (QIs) for the evaluation of the prevention and management of cancer therapy-related cardiovascular toxicity. METHODS AND RESULTS: We followed the European Society of Cardiology (ESC) methodology for QI development which comprises (i) identifying the key domains of care for the prevention and management of cancer therapy-related cardiovascular toxicity in patients on cancer treatment, (ii) performing a systematic review of the literature to develop candidate QIs, and (iii) selecting of the final set of QIs using a modified Delphi process. Work was undertaken in parallel with the writing of the 2022 ESC Guidelines on Cardio-Oncology and in collaboration with the European Haematology Association, the European Society for Therapeutic Radiology and Oncology and the International Cardio-Oncology Society. In total, 5 main and 9 secondary QIs were selected across five domains of care: (i) Structural framework, (ii) Baseline cardiovascular risk assessment, (iii) Cancer therapy related cardiovascular toxicity, (iv) Predictors of outcomes, and (v) Monitoring of cardiovascular complications during cancer therapy. CONCLUSION: We present the ESC Cardio-Oncology QIs with their development process and provide an overview of the scientific rationale for their selection. These indicators are aimed at quantifying and improving the adherence to guideline-recommended clinical practice and improving patient outcomes.


Subject(s)
Cardiology , Neoplasms , Humans , Quality Indicators, Health Care , Medical Oncology , Neoplasms/therapy
2.
J Hosp Infect ; 102(4): 377-393, 2019 Aug.
Article in English | MEDLINE | ID: mdl-30794854

ABSTRACT

BACKGROUND: Infection prevention and control (IPC) is a measure to prevent healthcare-associated infections in healthcare settings. There is limited evidence of the effectiveness of IPC programmes in long-term care facilities (LTCFs). AIM: To review and analyse the effectiveness and the components of IPC programmes in LTCFs for older adults. METHODS: Electronic databases (PubMed, EMBASE, CINAHL and Cochrane CENTRAL) were searched systematically for English-language articles assessing IPC interventions in LTCFs, published over the last decade (2007-2016). The components of IPC programmes were analysed based on the World Health Organization (WHO) manuals for improving IPC activities. Two reviewers independently assessed the quality of studies using the Cochrane risk-of-bias tool and the risk-of-bias assessment tool for non-randomized studies. FINDINGS: Seventeen studies met the eligibility criteria; 10 studies were randomized trials (58.8%) and the others were non-randomized trials to examine the impact of IPC programmes on infection and/or performance outcomes of healthcare workers. None of the included studies implemented all of the WHO core components. Behavioural change strategies using education, monitoring and feedback were reported to be successful interventions for reducing the threat of healthcare-associated infections. Generally, studies using four or more elements of the WHO multi-modal strategy reported significant reductions in infection rates. CONCLUSIONS: There is some evidence for the effectiveness of IPC interventions using education, monitoring, feedback and four or more elements of the WHO multi-modal strategy to control healthcare-associated infections in LTCFs.


Subject(s)
Cross Infection/prevention & control , Disease Transmission, Infectious/prevention & control , Health Facilities , Infection Control/methods , Long-Term Care/methods , Aged , Aged, 80 and over , Behavior Therapy/methods , Clinical Trials as Topic , Cross Infection/transmission , Female , Health Services Research , Humans , Male , Middle Aged
3.
Med Tr Prom Ekol ; (5): 25-9, 2015.
Article in Russian | MEDLINE | ID: mdl-26336731

ABSTRACT

To prevent progressive lung ventilation disorders, to lower inflammatory activity in respiratory diseases, to prevent pneumoconiosis in coal miners, total broncho-alveolar lavage was included into therapeutic and prophylactic measures system. Results are reduction of lung ventilation disorders progression over 5-year observation, lower intensity of tracheo- bronchial inflammation in miners with chronic respiratory diseases.


Subject(s)
Bronchoalveolar Lavage/methods , Coal Mining , Pneumoconiosis/rehabilitation , Humans , Treatment Outcome
4.
Int J Nurs Stud ; 51(4): 549-54, 2014 Apr.
Article in English | MEDLINE | ID: mdl-24016599

ABSTRACT

BACKGROUND: One of the extensions to practice for the emergency nurse practitioner role is to appropriately order and interpret radiographs in the emergency department. OBJECTIVE: The aim of the study was to compare the accuracy in interpreting isolated adult limb radiographs between emergency nurse practitioners and emergency physicians. DESIGN: A prospective comparative study was undertaken. SETTING: Emergency department in a large metropolitan hospital. PARTICIPANTS: 200 adult patients with isolated limb injuries were consented. METHODS: Six emergency nurse practitioners and ten emergency physicians participated. One emergency physician and emergency nurse practitioner independently clinically assessed each patient, determined the need for radiograph and separately recorded their interpretation of the radiograph as either definite fracture, no fracture or possible fracture. A single consultant radiologist reviewed each radiograph and their interpretation was seen as the gold standard. The sensitivity and specificity of emergency physicians and emergency nurse practitioners were calculated. To measure the level of agreement between the two-clinician groups, the weighted Kappa statistic was used. RESULTS: The sensitivity for the emergency nurse practitioners was 91% and 88% for the emergency physicians. The specificity for the emergency nurse practitioners was 85% and for the emergency physicians 91%. The weighted Kappa on the presence of a fracture between the emergency nurse practitioners and emergency physicians was 0.83. CONCLUSIONS: This study validates the clinical and diagnostic skills of emergency nurse practitioners assessed in the interpretation of isolated adult limb injury radiographs.


Subject(s)
Extremities/diagnostic imaging , Adult , Female , Humans , Male , Prospective Studies , Radiography
5.
Surgeon ; 12(2): 106-14, 2014 Apr.
Article in English | MEDLINE | ID: mdl-23954483

ABSTRACT

OBJECTIVES: In 1978 the Advanced Trauma Life Support guidelines were first implemented and are viewed by many as the gold standard of care in the emergency setting. It may not be immediately obvious where assessment and management of maxillofacial injuries fits within these trauma guidelines. This article aims to provide a concise, contemporary guide for the treatment of maxillofacial trauma in the emergency setting. METHODS: An electronic database search was conducted in PubMed and Science Direct on articles from 1970 to the present day. The key search terms were Maxillofacial, Trauma, ATLS, Advanced Trauma Life Support, EMST, Early Management of Severe Trauma, Airway, Eye, Ophthalmic and Management. The findings were compiled into a review article. The article was then reviewed by experts in the fields of Maxillofacial Surgery and Ophthalmology to ensure content and contextual accuracy. RESULTS: Physicians are becoming increasingly exposed to major maxillofacial injuries. Resuscitative measures can be complex and require prompt decisions especially in gaining a secure airway. A proposed treatment algorithm for maxillofacial trauma patients has been devised by the authors. CONCLUSIONS: It is imperative that sight preserving assessment and interventions are not forgotten in the emergency management of maxillofacial trauma. We propose an algorithm for the management of maxillofacial trauma, and recommend the use of CT as a powerful adjunct to clinical examination in patients with maxillofacial trauma.


Subject(s)
Disease Management , Emergency Service, Hospital , Maxillofacial Injuries/diagnosis , Maxillofacial Injuries/therapy , Multiple Trauma , Humans
6.
Collegian ; 21(4): 287-93, 2014.
Article in English | MEDLINE | ID: mdl-25632725

ABSTRACT

BACKGROUND: Coronary heart disease is common in Type 2 diabetes and often requires cardiac surgery. However poorer outcomes have been reported including increased rates of post-operative infection and prolonged hospital stay. AIM: The aim of the study was to determine the feasibility and acceptability of a specialist consultation model (pre-operative medical and educational intervention) for type 2 diabetes in the cardiac surgery setting. METHODS: Twenty four patients were assigned usual care or to the intervention group. The intervention group were assessed by a diabetes clinical nurse consultant, dietitian, and endocrinologist during a pre-operative visit. Specific diabetes questionnaires were administered, education was delivered, and protocol-driven changes to the medical regimen were instituted. Length of stay, incidence of post-operative complications, and number of post-operative inpatient review endocrinology visits required were recorded. RESULTS: Twenty four patients with a pre-operative HbA(1c) greater than 6.5% (48 mmol/mol) were studied (17 males and 7 females). In the usual care group (n = 15), HbA(1c) pre-operatively was 7.2% (55.2 mmol/mol) compared to 10.1% (86.9 mmol/mol) in the intervention group (n = 9). Six weeks post-operatively HbA(1c) fell significantly in the intervention group by 1.9% (to 8.2% [66.1 mmol/mol]) compared to a reduction of 1.2% (to 7.0% [53 mmol/mol]) in the usual care group (p < 0.05). No significant differences were observed in length of stay in intensive care or in total hospital stay between the groups: length of ICU stay 54 h for intervention versus 47 h for usual care, total hospital stay (mean 8 days for both); or in rates of post-operative infection. Differences were seen between in the diabetes questionnaires: in the Problem Areas in Diabetes questionnaire and in the Diabetes Treatment Satisfaction Questionnaire (p = 0.048). CONCLUSION: This small pilot feasibility study suggests there is potential benefit in the acute optimisation of diabetes treatment before elective cardiac surgery.


Subject(s)
Cardiac Surgical Procedures , Diabetes Mellitus, Type 2/surgery , Aged , Female , Humans , Male , Middle Aged , Preoperative Care
7.
Transplant Proc ; 45(1): 33-7, 2013.
Article in English | MEDLINE | ID: mdl-23375272

ABSTRACT

INTRODUCTION: Although the early effects of brain death on the organ donor are well described, there is a paucity of information on the impact of donor brain death on the transplanted recipient's heart in both the short and long term. The few studies published report conflicting results. The aim of this article was to undertake a retrospective exploratory study examining the impact of brain death in the donor on recipient outcomes with respect to the cardiac allograft, specifically looking at primary graft failure (PGF), postoperative rejection, and survival. METHODS: A total of 215 consecutive orthotopic heart transplants performed between June 2001 and March 2011 were included in this retrospective exploratory analysis. RESULTS: Brain death time had no association with rejection-free period or mortality in this study cohort. Use of intra-aortic balloon pump support after donor allograft implantation (assessed as an indicator of PGF) was significantly associated with brain death time (odds ratio 0.998 [95% confidence interval 0.997-0.999]; P = .023) on univariate analysis with longer brain death time associated with a lower incidence of PGF. A strong correlation between brain death time and hypoxia inducible factor 1α enzyme activity in donor atrial tissue was found (r = .56; P = .002). CONCLUSION: This study indicates that there is an association between brain death time and PGF. A longer interval from brain death may give the donor heart more time to recover from the catecholamine storm. This may have implications for donation after circulatory death donor hearts, which have not been subjected to this catecholamine storm and may potentially be less likely to suffer PGF as a result.


Subject(s)
Brain Death , Graft Survival , Heart Failure/surgery , Heart Transplantation/methods , Tissue Donors , Adult , Female , Graft Rejection , Heart Failure/mortality , Humans , Hypoxia-Inducible Factor 1, alpha Subunit/metabolism , Immunosuppressive Agents/therapeutic use , Male , Middle Aged , Myocardium/pathology , Odds Ratio , Retrospective Studies , Time Factors
8.
Genet Mol Res ; 11(3): 3263-6, 2012 Sep 13.
Article in English | MEDLINE | ID: mdl-23079820

ABSTRACT

The balloon flower (Platycodon grandiflorum A. DC.) is a perennial flowering plant of the Campanulaceae family; it is the only member of the genus Platycodon. Information on the genetic diversity of balloon flower populations is of great importance for the conservation and germplasm utilization of this flowering plant. Twenty-two polymorphic microsatellite loci were developed and characterized with eight balloon flower accessions collected from South Korea and China. Eighty-one alleles were detected among the eight balloon flower accessions. The number of alleles per locus ranged from two to six, with a mean of four alleles per locus. The observed and expected heterozygosity values ranged from 0.000 to 0.875 (mean = 0.355) and 0.117 to 0.766 (mean = 0.489), respectively. The polymorphic information content values ranged from 0.110 to 0.733, with a mean of 0.449. These new microsatellite markers will be useful for population and conservation genetic studies of P. grandiflorum.


Subject(s)
Flowers/genetics , Genetic Techniques , Microsatellite Repeats/genetics , Platycodon/genetics , Polymorphism, Genetic , Alleles , Genetic Loci/genetics , Molecular Sequence Data
9.
Transplant Proc ; 44(5): 1385-9, 2012 Jun.
Article in English | MEDLINE | ID: mdl-22664020

ABSTRACT

BACKGROUND: There is little data available on the specific effects of warm ischemia time (WIT) as opposed to cold ischemia or storage time. With current research endeavors focusing on warm continuous perfusion, storage of donor hearts, and utilization of hearts from non-heart-beating donors, the impact of WIT on outcomes is increasingly relevant. The aim of this study was to analyze our results in cardiac transplantation with specific focus on the impact of WIT. METHODS: A retrospective review of 206 patients who underwent orthotopic heart transplantation at our institution between June 2001 and November 2010 was performed. Donor, recipient, and operative factors were analyzed. The main outcome variables were all cause mortality, survival, and primary graft failure. RESULTS: WIT of >80 minutes was associated with reduced survival compared with a shorter WIT of <60 minutes. Multivariate analysis showed increasing donor age to be the most significant variable associated with increased risk of mortality (hazard ratio 1.04; P = .004) per year of increasing donor age. CONCLUSIONS: This study has demonstrated a reduced survival in heart transplant recipients with increased WIT. This finding may be of particular relevance to potential future heart transplantation using organs procured from non-heart-beating donors.


Subject(s)
Heart Transplantation/mortality , Warm Ischemia/mortality , Adult , Chi-Square Distribution , Female , Heart Transplantation/adverse effects , Humans , Kaplan-Meier Estimate , Logistic Models , Male , Middle Aged , Multivariate Analysis , Odds Ratio , Proportional Hazards Models , Retrospective Studies , Risk Assessment , Risk Factors , Time Factors , Treatment Outcome , Victoria , Warm Ischemia/adverse effects , Young Adult
10.
Eye (Lond) ; 24(6): 947-53, 2010 Jun.
Article in English | MEDLINE | ID: mdl-19942939

ABSTRACT

PURPOSE: The introduction of anti-metabolite regimens to glaucoma filtration surgery has improved post-operative intraocular pressure (IOP) control; however, it has also increased the frequency of dysfunctional blebs. In this study, we report a surgical technique for the repair of trabeculectomy blebs using bleb preservation, a sliding conjunctival flap, and fibrin glue. METHODS: This study is a retrospective, non-comparative, consecutive case series involving 10 eye samples collected from 10 patients (6 M : 4 F) with one or a combination of bleb overfiltration, dysesthesia, thinning, leak, or blebitis, in which a conjunctival flap was advanced over the failing bleb and secured in place using fibrin glue and sutures. RESULTS: All patient eyes had symptom resolution post-operatively. There were no bleb leaks or hypotonous eyes after an average follow-up of 15.2 months (range: 6-31 months). Three patients required needling augmented with 5-fluorouracil needling to maintain IOP control. IOP decreased from a mean of 13.6+/-1.8 mm Hg (with a mean of 0.7 glaucoma medications) pre-operatively to 11.7+/-0.9 mm Hg (with a mean of 0.9 glaucoma medications). CONCLUSION: Conjunctival flap advancement with bleb preservation and adjunctive fibrin glue is a successful technique used for the treatment of bleb dysfunction. The major advantages compared with other techniques are preservation of IOP control and reduced post-operative complications, such as wound leak and the need for re-suturing.


Subject(s)
Conjunctiva/surgery , Fibrin Tissue Adhesive/therapeutic use , Filtering Surgery/methods , Glaucoma/surgery , Surgical Flaps , Aged , Female , Humans , Male , Middle Aged , Postoperative Complications/surgery , Reoperation/methods , Retrospective Studies , Trabeculectomy/adverse effects
11.
J Appl Physiol (1985) ; 105(6): 1907-15, 2008 Dec.
Article in English | MEDLINE | ID: mdl-18927271

ABSTRACT

Tendons are important for optimal muscle force transfer to bone and play a key role in functional ability. Changes in tendon properties with aging could contribute to declines in physical function commonly associated with aging. We investigated the in vivo mechanical properties of the patellar tendon in 37 men and women [11 young (27 +/- 1 yr) and 26 old (65 +/- 1 yr)] using ultrasonography and magnetic resonance imaging (MRI). Patella displacement relative to the tibia was monitored with ultrasonography during ramped isometric contractions of the knee extensors, and MRI was used to determine tendon cross-sectional area (CSA) and signal intensity. At peak force, patellar tendon deformation, stress, and strain were 13 (P = 0.05), 19, and 12% less in old compared with young (P < 0.05). Additionally, deformation, stiffness, stress, CSA, and length were 18, 35, 41, 28, and 11% greater (P < 0.05), respectively, in men compared with women. After normalization of mechanical properties to a common force, no age differences were apparent; however, stress and strain were 26 and 22% higher, respectively, in women compared with men (P < 0.05). CSA and signal intensity decreased 12 and 24%, respectively, with aging (P < 0.05) in the midregion of the tendon. These data suggest that differences in patellar tendon in vivo mechanical properties with aging are more related to force output rather than an age effect. In contrast, the decrease in signal intensity indirectly suggests that the internal milieu of the tendon is altered with aging; however, the physiological and functional consequence of this finding requires further study.


Subject(s)
Aging/physiology , Patellar Ligament/growth & development , Patellar Ligament/physiology , Adult , Aged , Biomechanical Phenomena , Body Mass Index , Female , Humans , Magnetic Resonance Imaging , Male , Patellar Ligament/diagnostic imaging , Sex Characteristics , Stress, Mechanical , Ultrasonography
12.
Open Nurs J ; 2: 63-7, 2008.
Article in English | MEDLINE | ID: mdl-19319222

ABSTRACT

Health-related quality of life (HRQoL) was examined in patients' and their respective spouses' perspectives five years after cardiac bypass surgery. Participants completed the Short-Form 36 (SF-36) which consists of eight domains and two component summary scores measuring physical and mental HRQoL (PCS and MCS respectively). Paired t tests were used to compare couples responses (n=56 pairs) with spouses recording higher (i.e. better scores) in the physical-related domains although differences were not significant. Statistically significant results were found between patients and spouses in emotional role, mental health, social functioning, energy/vitality and general health perceptions (p< 0.001). The PCS were very similar for both the patient and spouses sample (45.9 v. 45.8 respectively, p = .829) and the MCS was significantly higher in the patients compared to the spouses (54.8 v. 47.7, p < .001). The results demonstrated that spouses could accurately report the physical aspects of HRQoL but not the mental health of their partner.

13.
Acta Physiol (Oxf) ; 191(2): 147-59, 2007 Oct.
Article in English | MEDLINE | ID: mdl-17655736

ABSTRACT

AIM: The goal of this investigation was to test specific exercise and nutrition countermeasures to lower limb skeletal muscle volume and strength losses during 60 days of simulated weightlessness (6 degrees head-down-tilt bed rest). METHODS: Twenty-four women underwent bed rest only (BR, n = 8), bed rest and a concurrent exercise training countermeasure (thigh and calf resistance training and aerobic treadmill training; BRE, n = 8), or bed rest and a nutrition countermeasure (a leucine-enriched high protein diet; BRN, n = 8). RESULTS: Thigh (quadriceps femoris) muscle volume was decreased (P < 0.05) in BR (-21 +/- 1%) and BRN (-24 +/- 2%), with BRN losing more (P < 0.05) than BR. BRE maintained (P > 0.05) thigh muscle volume. Calf (triceps surae) muscle volume was decreased (P < 0.05) to a similar extent (P > 0.05) in BR (-29 +/- 1%) and BRN (-28 +/- 1%), and this decrease was attenuated (P < 0.05) in BRE (-8 +/- 2%). BR and BRN experienced large (P < 0.05) and similar (P > 0.05) decreases in isometric and dynamic (concentric force, eccentric force, power and work) muscle strength for supine squat (-19 to -33%) and calf press (-26 to -46%). BRE maintained (P > 0.05) or increased (P < 0.05) all measures of muscle strength. CONCLUSION: The nutrition countermeasure was not effective in offsetting lower limb muscle volume or strength loss, and actually promoted thigh muscle volume loss. The concurrent aerobic and resistance exercise protocol was effective at preventing thigh muscle volume loss, and thigh and calf muscle strength loss. While the exercise protocol offset approximately 75% of the calf muscle volume loss, modification of this regimen is needed.


Subject(s)
Exercise Therapy/methods , Muscular Atrophy/prevention & control , Nutritional Physiological Phenomena , Space Flight , Weightlessness Simulation , Adult , Analysis of Variance , Bed Rest , Dietary Proteins/administration & dosage , Ergometry , Female , Head-Down Tilt , Humans , Isometric Contraction , Leg , Leucine/administration & dosage , Muscle, Skeletal/physiology , Muscular Atrophy/metabolism , Thigh , Time Factors
15.
Eye (Lond) ; 21(2): 183-6, 2007 Feb.
Article in English | MEDLINE | ID: mdl-16327797

ABSTRACT

AIM/PURPOSE: The incidence of trabeculectomy is falling due to more effective medical therapies, resulting in fewer trabeculectomy operations carried out by Ophthalmology trainees. This study audits all primary trabeculectomy procedures performed publicly at the two major teaching hospitals in Brisbane, Australia. METHOD: A retrospective consecutive case review analysing the rates and outcomes of Ophthalmology trainee versus consultant trabeculectomies that were performed during the period May 1996-May 2002. RESULTS: In all, 290 primary trabeculectomies were undertaken during the study period. Ophthalmology trainees performed 95 (33%) of the procedures. This represents a rate of 1.6 trabeculectomy procedures per year per trainee (10 trainees train at the two hospitals per year). Rates of complications postoperatively were similar between the trainee and consultant groups. The percentage of patients achieving an IOP < or =15 mmHg on no medication at their last follow-up was low at 30%. CONCLUSIONS: The results of this study suggests that improvement in trabeculectomy technique is required. In order to acquire skills, wetlab training on artificial or animal eyes may become mandatory within the training programmes, otherwise trabeculectomy will become the realm of sub-specialists with glaucoma fellowship training.


Subject(s)
Glaucoma/surgery , Trabeculectomy , Adult , Aged , Aged, 80 and over , Clinical Competence , Education, Medical, Graduate , Female , Glaucoma/physiopathology , Humans , Intraocular Pressure/physiology , Male , Medical Audit/methods , Middle Aged , Retrospective Studies , Trabeculectomy/adverse effects , Trabeculectomy/education , Trabeculectomy/statistics & numerical data , Treatment Outcome , Visual Fields/physiology
18.
Eye (Lond) ; 20(1): 32-7, 2006 Jan.
Article in English | MEDLINE | ID: mdl-15688055

ABSTRACT

PURPOSE: A teaching model for trabeculectomy is described using pig eyes prepared in formalin. METHOD: The model enables trainee surgeons to practice various aspects of tissue handling required for successful trabeculectomy including the construction of a fornix-based conjunctival flap, scleral flap with buried releasable sutures, and water-tight conjunctival closure. RESULTS: Exposure to the necessary skills required to perform trabeculectomy surgery can be improved by the use of wet laboratory practice. CONCLUSIONS: Trabeculectomy surgery experience is becoming more limited as fewer procedures are being performed due to the efficacy of recent medications. Wet laboratories will become an increasingly important aspect of a comprehensive ophthalmology training programme.


Subject(s)
Microsurgery/education , Ophthalmology/education , Trabeculectomy/education , Animals , Education, Medical, Continuing , Glaucoma, Open-Angle/surgery , Microsurgery/instrumentation , Microsurgery/methods , Models, Animal , Models, Educational , Sus scrofa , Suture Techniques , Tissue Preservation , Trabeculectomy/instrumentation , Trabeculectomy/methods
19.
Br J Ophthalmol ; 87(4): 432-5, 2003 Apr.
Article in English | MEDLINE | ID: mdl-12642305

ABSTRACT

AIM: To determine the changes in postkeratoplasty astigmatism induced by lamellar keratotomy. METHODS: A prospective, non-randomised comparative trial of patients undergoing a hinged lamellar corneal flap for treatment of significant astigmatism after penetrating keratoplasty. Uncorrected visual acuity, best corrected visual acuity, refraction, and corneal topography were assessed at 1 and 3 months after the lamellar keratotomy. RESULTS: 17 eyes in 16 patients (13 M, 3F) were included in the study (mean age 48.2 years; range 20-86 years). Six of 17 eyes (35.3%) changed more than 1 dioptre (D) in spherical equivalent by 3 months. Nine of 17 eyes (52.9%) changed more than 1 D in sphere by 3 months. 12 of 17 eyes (70.6%) changed more than 1 D in refractive cylinder. Seven patients of 15 (46.7%) changed more than 1 D in corneal power as measured topographically. Five of 17 eyes (29.4%) changed in refractive cylinder axis more than 15 degrees and this was similar to the change measured topographically of four of 15 eyes (26.7%). Vector analysis showed 60% of eyes had a surgically induced astigmatism (SIA) vector of more than 1 D, including a net corneal astigmatism decrease of more than 1 D in four eyes and increase of more than 1 D in two eyes at 3 months after surgery. Complications of the lamellar keratotomy included two partial buttonholes and one partial wound dehiscence. CONCLUSIONS: The creation of a lamellar flap alone can have significant effects on the astigmatism following penetrating keratoplasty. LASIK for correction of postkeratoplasty astigmatism may be more accurately performed as a two stage procedure rather than a single stage, after the corneal effects of the lamellar keratotomy have stabilised.


Subject(s)
Astigmatism/surgery , Keratomileusis, Laser In Situ/methods , Keratoplasty, Penetrating/adverse effects , Adult , Aged , Aged, 80 and over , Astigmatism/etiology , Female , Humans , Keratomileusis, Laser In Situ/adverse effects , Male , Middle Aged , Prospective Studies , Refractive Errors/physiopathology , Surgical Flaps , Treatment Outcome , Visual Acuity/physiology
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