Routine immunization experience and practices during the COVID-19 pandemic of caregivers attending a tertiary hospital in Cape Town.

Introduction: Immunizations are successful, cost-effective interventions for the control of infectious diseases and preventing mortality. Lockdown restrictions during the COVID-19 pandemic had adverse effects on child-health including access to immunizations. Our study aimed to document immunization status, describe caregiver experiences around accessing immunizations during the COVID-19 pandemic and identify any significant factors associated with immunization status. Methods: Caregivers, with children between the ages of 10 to 33 months, attending Tygerberg Hospital Paediatric Department were invited to complete an anonymous survey from 15th September-15th December 2022. Data was captured using a REDCap questionnaire and analysed using Stata Version 17. Results: 171 caregivers completed the survey. Immunizations were up to date in 81%. Most (155, 88%) agreed it was important to immunize their child. A third of caregivers (55) felt it was unsafe to attend the clinic and 37% (62) agreed it was difficult to attend. Caregivers receiving a social grant (p = 0.023) or who felt safe attending clinic (p = 0.053) were more likely to be up to date with immunizations. Three-quarters (128, 78%) were aware of recommendations to continue immunization. These caregivers were more likely to think it was important to immunize on time (p = 0.003) and to receive family encouragement (p = 0.001). Caregivers were more likely to attend clinic if they felt it was important to vaccinate on time (p < 0.001) or felt safe attending clinic (p = 0.036). Conclusion: Immunization rates were higher than expected but below global targets. Although caregivers feel immunizations are important, unknowns still instilled fear of attending clinics. Social factors such as family support and social grants improve vaccine seeking behaviour.

Comparison of paediatric infectious disease deaths in public sector health facilities using different data sources in the Western Cape, South Africa (2007-2021).

BACKGROUND: Routinely collected population-wide health data are often used to understand mortality trends including child mortality, as these data are often available more readily or quickly and for lower geographic levels than population-wide mortality data. However, understanding the completeness and accuracy of routine health data sources is essential for their appropriate interpretation and use. This study aims to assess the accuracy of diagnostic coding for public sector in-facility childhood (age < 5 years) infectious disease deaths (lower respiratory tract infections [LRTI], diarrhoea, meningitis, and tuberculous meningitis [TBM]) in routine hospital information systems (RHIS) through comparison with causes of death identified in a child death audit system (Child Healthcare Problem Identification Programme [Child PIP]) and the vital registration system (Death Notification [DN] Surveillance) in the Western Cape, South Africa and to calculate admission mortality rates (number of deaths in admitted patients per 1000 live births) using the best available data from all sources. METHODS: The three data sources: RHIS, Child PIP, and DN Surveillance are integrated and linked by the Western Cape Provincial Health Data Centre using a unique patient identifier. We calculated the deduplicated total number of infectious disease deaths and estimated admission mortality rates using all three data sources. We determined the completeness of Child PIP and DN Surveillance in identifying deaths recorded in RHIS and the level of agreement for causes of death between data sources. RESULTS: Completeness of recorded in-facility infectious disease deaths in Child PIP (23/05/2007-08/02/2021) and DN Surveillance (2010-2013) was 70% and 69% respectively. The greatest agreement in infectious causes of death were for diarrhoea and LRTI: 92% and 84% respectively between RHIS and Child PIP, and 98% and 83% respectively between RHIS and DN Surveillance. In-facility infectious disease admission mortality rates decreased significantly for the province: 1.60 (95% CI: 1.37-1.85) to 0.73 (95% CI: 0.56-0.93) deaths per 1000 live births from 2007 to 2020. CONCLUSION: RHIS had accurate causes of death amongst children dying from infectious diseases, particularly for diarrhoea and LRTI, with declining in-facility admission mortality rates over time. We recommend integrating data sources to ensure the most accurate assessment of child deaths.

Corrigendum to "Clinical Presentation, Natural History, and Therapeutic Approach in Patients with Solitary Fibrous Tumor: A Retrospective Analysis".

[This corrects the article DOI: 10.1155/2020/1385978.].

Clinical Presentation, Natural History, and Therapeutic Approach in Patients with Solitary Fibrous Tumor: A Retrospective Analysis.

BACKGROUND: Solitary fibrous tumor (SFT) is a rare variant of soft tissue sarcoma (STS). Materials and Methods. We reviewed SFT patients (pts) treated at our institution between 12/1990 and 09/2017. RESULTS: We identified 94 pts with a median follow-up (mFU) of 4.7 years (range: 0.1-21.53). Primary sites were the chest (33%), abdomen (21.3%), brain (12.8%), and extremities (9.6%); 6.4% of pts presented with synchronous metastasis. Median overall survival (mOS) from the first diagnosis was 56.0 months (m) (0.3-258.3). Doege-Potter syndrome was seen in 2.1% of pts. Primary resection was performed in 86 pts (91.5%). Median progression-free survival was 34.1 m (1.0-157.1), and 43% of pts stayed SFT-free during FU. Local recurrence occurred in 26.7% after a mFU of 35.5 m (1.0-153.8), associated with an OS of 45.1 m (4.7-118.2). Metachronous metastasis occurred in 30.2% after a mFU of 36.0 m (0.1-157.1). OS in metastatic pts was 19.0 m (0.3-149.0). Systemic therapy was given to 26 pts (27.7%) with inoperable/metastatic disease. The most common (57.7%) upfront therapy was doxorubicin, achieving responses in 13.3% of pts with a PFS of 4.8 m (0.4-23.8). In second line, pts were treated with ifosfamide or pazopanib, the latter achieving the highest response rates. Third-line treatment was heterogeneous. CONCLUSION: SFT is an orphan malignancy with a highly variable clinical course and a considerable risk of local failure and metachronous metastasis. Surgery is the only curative option; palliative systemic therapy is used in inoperable/metastatic cases but achieves low response rates. The highest response rates are seen with pazopanib in second/third line.

Practicability of segmental stabilizing exercises in the context of a group program for the secondary prevention of low back pain. An explorative pilot study.

AIM: Segmental stabilizing exercises (SSE) for specific dysfunction of local muscles (m. transversus abdominis, m. multifidus, pelvic floor muscles and diaphragm pelvis) have been advocated in patients with low back pain (LBP). The specific aims of this study were to examine: 1) whether participants of a group program learn SSE; 2) whether they respond to SSE with a reduction in present LBP and 3) to what extent people report using SSE in daily living. METHODS: One-hundred nurses participated in this explorative pilot study. Data from a 12-week multimodal program including SSE as intervention for the prevention of LBP were analysed. The prone test was taken as an indicator for the participants' ability to perform SSE correctly. Present back pain was assessed on a numerical rating scale (0-10). A compliance questionnaire and a transfer questionnaire assessed compliance and transfer of SSE into daily living. RESULTS: After the intervention, 72% of participants were able to perform SSE correctly as measured by the prone test. Between 48% and 78% of the participants with present LBP experienced a minimal, clinically important change (minimal clinical changes, [MCC]) while performing SSE. No strong interrelations between the ability to correctly perform SSE and the MCC of LBP could be identified. Participants reported exercising SSE for 12 min on average 4-5 days a week. At 3 months after the intervention, 76% of participants reported using SSE ''always'' in their work with patients. CONCLUSION: First findings are that SSE can be learned by the majority of the participants of a group program for the prevention of LBP. Additionally, SSE reduces present LBP and so can help people with LBP learn to help themselves. We are unable to explain how participants benefited from SSE even when they were unable to perform SSE correctly, as measured by the prone test.

Stroke recurrence and its prevention in patients with patent foramen ovale.

BACKGROUND: It is unclear whether medical or invasive (surgical or catheter interventional) treatment is preferable to prevent recurrence of cerebral ischemia in patients with patent foramen ovale (PFO) as the suspected cause of stroke and what the role of concomitant risk factors is in stroke recurrence. METHODS: Over a period of ten years, 124 patients (mean age 51 +/- 15 years) with cryptogenic cerebral ischemia and PFO were included into the study and prospectively followed over a mean of 52 +/- 32 months. Of these, 83 were treated medically, 34 underwent transcatheter closure, and seven had surgical closure of the foramen. Of the medically treated patients, 11 stopped medication during follow-up. Recurrent ischemic events and risk factors for recurrence were analyzed. RESULTS: Annual stroke recurrence rates were generally low and comparable in catheter and medically treated patients, and in patients who had stopped medication (2.9%/2.1%2.2%/year). Patients suffering from recurrence after transcatheter closure (n = 2) both had residual shunts. No stroke recurrence was observed in the few surgically treated patients. An atrial septal aneurysm was not a predictor of recurrent or multiple strokes (p > 0.05, OR = 0.31, and OR = 0.74). Large shunts and a history of previous ischemic events were considerably more frequent in patients with recurrent strokes (p < 0.05, OR = 5.0, and OR = 4.4). Pulmonary embolism and case fatality rates were significantly higher in patients with stroke recurrence (p < 0.001, and p < 0.01). CONCLUSIONS: The absolute risk of recurrent cerebrovascular events in patients with PFO receiving medical or catheter interventional therapy is low. The small group of untreated patients had a comparably low rate of stroke recurrences. Previous ischemic events and shunt size were risk factors in this observational study. Given conflicting findings across multiple studies, enrollment into a randomized controlled trial would be the optimal choice.

Contribution of diffusion-weighted imaging in determination of stroke etiology.

INTRODUCTION: Diffusion-weighted (DW) MR imaging enables early identification of ischemic lesions in stroke. Stroke subtype may be related to different lesion patterns. The aim of this study was to analyze the subtype of ischemic lesions as determined by the Trial of Org 10172 in Acute Stroke Treatment (TOAST) criteria by using DW MR imaging. METHODS AND RESULTS: In this study, 510 consecutive patients with ischemic stroke (95%) and transient ischemic attack (5%) aged 65 +/- 12 years were investigated by use of DW MR imaging within 48 hours of the clinical onset of symptoms. Lesions on DW imaging were classified as single, scattered, or multiple lesions in one vascular territory and multiple in more than one vascular territory. We found a significant overall association of DW imaging lesion patterns and classification with stroke subtype by using the TOAST criteria (P < .001). Single corticosubcortical lesions (P < .01) and multiple bilateral lesions in the anterior (AC) and posterior circulation (P < .001) on DW imaging were significantly associated with a cardiac embolic source. Multiple unilateral lesions in the AC were significantly associated with large-artery arteriosclerosis. Because of the 15-mm criterion for small-artery occlusion, cryptogenic stroke was significantly associated with subcortical lesions >/=15 mm. CONCLUSION: We found a strong relationship between stroke subtype and DW imaging lesion pattern. The finding of multiple bilateral lesions was significantly associated with a cardiac embolic source, which may be caused by a specific thrombus texture with a tendency for embolus dissemination.

[Cortical amaurosis and status epilepticus with acute porphyria]. / Kortikale Amaurosis und Status epilepticus bei akuter Porphyrie.

The most common neurologic manifestations of acute intermittent porphyria (AIP) are autonomic visceral neuropathy, peripheral motor neuropathy, and CNS dysfunctions including seizures and neuropsychiatric disturbances. In rare instances, however, AIP patients have presented with acute cortical blindness. We present a 20-year-old woman who suffered her first attack of AIP. Following 1 week of abdominal pain, she was transferred from a surgical department because of sudden visual loss and deterioration of consciousness. On admission, she developed several generalized seizures. Magnetic resonance imaging showed bilateral DWI lesions occipitally and in the left anterior circulation. Cerebrospinal fluid, MR angiography, and duplex ultrasound were normal. On the following day, sedation and intubation became necessary because of a generalized status epilepticus. Analysis of porphyrinogens in blood, urine and stool showed significantly elevated values. Intravenous therapy with häm-arginate was initiated and antiepileptic therapy was changed to gagabentine. Under this therapeutical regime she remained stable and extubation was possible 48 h later.

Upper cranial nerve palsy resulting from spontaneous carotid dissection.

INTRODUCTION: Upper cranial nerve palsy has a variety of causes such as cerebral and nerve ischemia, diabetes, infectious and non-infectious meningitis, subarachnoid hemorrhage and intracranial aneurysm. CASE 1 : A 45-year-old man suffered from holocephalic headaches and a right-sided neck pain for two weeks. He presented to our emergency department because of a sudden ptosis of the right eye. On admission neurological examination revealed a right sided Horner's syndrome and hypesthesia of the right side of the face. Magnetic resonance angiography identified a circumscribed dissection of the right extracranial internal carotid artery originating from the carotid bifurcation. Conventional angiography 2 weeks later showed a nearly recanalized artery. CASE 2 : A 55-year-old previously healthy man without cardiovascular risk factors developed right sided neck pain when loading a seeder with several sacks of crop. A few hours later he noticed a left-sided weakness. On admission a severe left sided hemiparesis and a mild neglect were present. Duplex sonography revealed a right-sided distal internal carotid artery (ICA) occlusion. The next morning the patient complained of double vision; he had a right-sided pupil-sparing oculomotor palsy. The diagnosis of ICA dissection was confirmed by conventional angiography, at that time showing a partially recanalized ICA without involvement of the cavernous region by the dissection. CONCLUSION: ICA dissection must be included in the differential diagnosis of upper cranial nerve palsy and should be assessed by duplex ultrasound and magnetic resonance imaging. A possible explanation is nerve ischemia due to a transient or permanent interruption of the blood supply by compression of the vasa nervorum originating from the intracranial carotid artery.

[Isolated cranial nerve palsy secondary to carotid dissection]. / Isolierte Hirnnervenausfälle bei Karotisdissektionen.

Cranial nerve palsy has a variety of causes such as cerebral ischemia, nerve ischemia in diabetes, infectious and noninfectious meningitis, subarachnoid hemorrhage, malignant tumors of the skull base, neck, or upper mediastinum, aortic aneurysm, surgery of the thyroid,and many more. We report two cases of spontaneous carotid dissections leading to cranial nerve palsies, which is an uncommon cause of isolated cranial nerve palsies.ICA dissection must therefore be included in the differential diagnosis of lower cranial nerve palsy and should be assessed by duplex ultrasound and MRI as is demonstrated in our cases.

[Von Hippel-Lindau syndrome with spinal, cerebellar, and retinal hemangioblastoma in identical twins]. / Von-Hippel-Lindau-Syndrom mit spinalen, zerebellären und retinalen Hämangioblastomen bei eineiigen Zwillingen.

We report about a case of a 22-year-old women who was admitted because of sudden and painless proximal paraparesis, sensory loss at distal L 1, and bladder dysfunction. In MRI, cystic lesions in the spinal cord were identified at C 1,C 6,T 1,T 6,and T 11 as well as in the cerebellum.A tentative diagnosis of spinal hemangioblastomas was confirmed by spinal angiography and postoperative histology of the symptomatic tumor at T11.Furthermore, retinal hemangioblastomas were detected by fluorescence angiography and treated with laser surgery. Based on the clinical findings,we assumed the diagnosis of von Hippel-Lindau syndrome (vHL).Postoperatively, the paraparesis and sensory deficit improved, but the bladder dysfunction persisted. The patient's identical twin was screened for hemangioblastomas, too, and spinal, retinal, and one cerebellar tumor with a nearly identical location pattern were found. There was no evidence for pancreatic, adrenal, or renal involvement in both twins. The twins were investigated for inactivating mechanisms of the vHL germline mutations using single-strand conformational polymorphism (SSCP) and Southern blotting, but none of the known germline mutations were identified. Because the family history is devoid of vHL disease, spontaneous mutation might be causal for the syndrome in our patients.

Single-crystal-like diffraction data from polycrystalline materials

A method for solving structures from powder diffraction data was developed, and its validity was demonstrated on three complex structures. The method uses a textured sample and exploits the high intensity and parallel nature of synchrotron radiation. In principle, crystal structures as complex as those routinely solved by single-crystal methods can be determined with this approach. For example, the as-synthesized form of the zeolite UTD-1, with 69 nonhydrogen atoms in the asymmetric unit, could be solved directly. With this method, a larger range of structural complexity becomes accessible to scientists interested in the structures of polycrystalline materials that cannot be grown as single crystals.

Evidences for physically different catalytic and regulatory nucleotide binding sites on the chloroplast H(+)-ATPase.

Chloroplast thylakoids which were incubated with pyridoxal-5-phosphate (PLP) in the dark, exhibit a slower ADP-binding curve in the light and lack the rapid initial phase of rebinding of loosely bound nucleotides upon de-energetization. The [14C]NBD binding pattern in subunits of PLP-modified thylakoids is reduced to that one found if ADP was present in the modification step. The [14C]NBD binding pattern in subunits of activated and successive PLP-modified CF1 is reduced to that one found in the latent enzyme. As in the latent (not activated) ATPase Lys beta 359 is modified by PLP, we conclude that this amino acid residue belongs to a regulatory binding site which binds ADP tightly upon de-energetization and releases it upon energetization. In the activated enzyme, however, the modified residue is related to a 9 kDa peptide in beta, which contains the conserved lysine 178. This site is proposed to be a catalytic one.