-
Wiley Interdisciplinary Reviews.... Jan 2022Escalating medical expenses due to infectious diseases are causing huge socioeconomic pressure on mankind globally. The emergence of antibiotic resistance has further... (Review)
Review
Escalating medical expenses due to infectious diseases are causing huge socioeconomic pressure on mankind globally. The emergence of antibiotic resistance has further aggravated this problem. Drug-resistant pathogens are also capable of forming thick biofilms on biotic and abiotic surfaces to thrive in a harsh environment. To address these clinical problems, various strategies including antibacterial agent delivering matrices and bactericidal coatings strategies have been developed. In this review, we have discussed various types of polymeric vehicles such as hydrogels, sponges/cryogels, microgels, nanogels, and meshes, which are commonly used to deliver antibiotics, metal nanoparticles, and biocides. Compositions of these polymeric matrices have been elaborately depicted by elucidating their chemical interactions and potential activity have been discussed. On the other hand, various implant/device-surface coating strategies which exploit the release-active mechanism of bacterial killing are discussed in elaboration. This article is categorized under: Therapeutic Approaches and Drug Discovery > Nanomedicine for Cardiovascular Disease Implantable Materials and Surgical Technologies > Nanomaterials and Implants Therapeutic Approaches and Drug Discovery > Nanomedicine for Infectious Disease.
Topics: Anti-Bacterial Agents; Anti-Infective Agents; Biofilms; Coated Materials, Biocompatible; Surface Properties
PubMed: 34374498
DOI: 10.1002/wnan.1745 -
Innovations (Philadelphia, Pa.) 2022Surgical aortic valve replacement (SAVR) carries the known risk of shedding debris into the left ventricle during valve leaflet excision and annulus debridement....
Surgical aortic valve replacement (SAVR) carries the known risk of shedding debris into the left ventricle during valve leaflet excision and annulus debridement. Embolization of this debris may have devastating effects for the patient. Although surgeons have developed methods to mitigate this risk, no data exist as to their efficacy. Herein, we present the first study that evaluates the efficacy of a technique for capturing debris during SAVR. Our group conducted a prospective case series of 20 patients who underwent SAVR using the insertion of an intraventricular surgical sponge prior to valve leaflet excision and annulus debridement to capture debris. Surgical sponges were grossly, radiographically, and histologically examined for the presence of cellular and acellular debris to determine the efficacy of this technique. Of the 20 surgical sponges analyzed, 15 specimens (75%) registered positivity for cellular and/or acellular debris. Seven sponges (35%) were grossly positive, 15 sponges (75%) were radiographically positive, and 4 sponges (20%) were histologically positive for calcified debris on examination. This is one of the few studies to objectively evaluate a method used to capture debris in SAVR procedures. Our results demonstrate a high frequency of debris captured within intraventricular surgical sponges and confirms the efficacy of this technique. While these data are promising, numerous additional approaches exist to capture debris, and a best practice standard should exist across the specialty. In addition, this study does not address the clinical outcomes associated with this technique. To these ends, additional data and multicenter collaboration are required.
Topics: Aortic Valve; Aortic Valve Stenosis; Heart Valve Prosthesis; Heart Valve Prosthesis Implantation; Humans; Risk Factors; Transcatheter Aortic Valve Replacement; Treatment Outcome
PubMed: 35578543
DOI: 10.1177/15569845221095876 -
The American Journal of Case Reports Sep 2020BACKGROUND During any surgical procedure, there are several factors that may lead to morbidity and mortality. One of those factors is a retained cotton or gauze surgical...
BACKGROUND During any surgical procedure, there are several factors that may lead to morbidity and mortality. One of those factors is a retained cotton or gauze surgical sponge inadvertently left in the body during an operation, known as gossypiboma. This clinical oversight may cause serious postoperative complications and increase the risk of mortality, particularly if left undiscovered. Furthermore, this issue adds to the economic burden on healthcare systems by increasing the rate of reoperation and rehospitalization. The length of postoperative gossypiboma diagnosis varies greatly, as patients may either present acutely with symptoms such as a palpable mass, pain, nausea, and vomiting, or remain asymptomatic for several years. CASE REPORT We report the case of a 48-year-old man who underwent a thoracotomy after a road traffic accident. The resulting empyema led to the intraoperative discovery of an intrathoracic gossypiboma, which was initially interpreted radiologically as a part of the previous surgical staple line. The causative agent was discovered by the team's nurses during the postsurgical count of instruments and sponges, and who were alerted to a recovered sponge differing in appearance from the sponges used for that procedure. CONCLUSIONS In general, proper counting and adherence to the World Health Organization 'Surgical Safety Checklist' can greatly improve the outcome of any surgery. The diagnosis of gossypiboma is often late or missed entirely and leads to additional interventions that can be avoided or detected early when the material contains a radiopaque marker. In cases under suspicion of any mistakenly left object, the use of intraoperative radiology before skin closure is highly recommended to prevent postoperative complications for the patient and organization.
Topics: Foreign Bodies; Humans; Male; Middle Aged; Postoperative Complications; Reoperation; Surgical Sponges; Thoracotomy
PubMed: 32893262
DOI: 10.12659/AJCR.923992 -
Advanced Science (Weinheim,... Jan 2023Imaging and measuring compression stresses secure a safe and healthy life. Compression stresses in kPa range are not easily detected by conventional mechanoresponsive...
Imaging and measuring compression stresses secure a safe and healthy life. Compression stresses in kPa range are not easily detected by conventional mechanoresponsive materials because microscopic molecular motion of the chromophores is not induced by such weak stresses. Moreover, imaging of the stress distribution is not achieved so far. The present study shows a sponge device combining two stimuli-responsive materials, a capsule releasing interior liquid and color-changing polymer in responses to compression stress and chemical stimulus, respectively. The stimuli-responsive capsule is dispersed on a melamine sponge comprised of the fibers with coating the layered polydiacetylene (PDA). The application of weak compression stresses induces collapse of the capsules, outflow of the interior liquid, and subsequent irreversible color change of PDA. The cascading response in the sponge device colorimetrically enables imaging of the distribution and measuring the strength of the compression stresses in kPa range. Furthermore, the device demonstrates imaging and measuring unknown weak compression stresses applied by the irregular-shaped objects. A couple of clinical issues in surgical operation of intestine are studied using the stress-imaging sponge device. The device and its design strategy can be applied to stress imaging in a variety of fields.
Topics: Polyacetylene Polymer; Polymers; Diagnostic Imaging; Physical Phenomena
PubMed: 36507554
DOI: 10.1002/advs.202206097 -
Bioactive Materials Sep 2023In traumatized patients, the primary cause of mortality is uncontrollable continuous bleeding and unexpected intraoperative bleeding which is likely to increase the risk... (Review)
Review
In traumatized patients, the primary cause of mortality is uncontrollable continuous bleeding and unexpected intraoperative bleeding which is likely to increase the risk of complications and surgical failure. High expansion sponges are effective clinical practice for the treatment of wound bleeding (irregular/deep/narrow) that are caused by capillaries, veins and even arterioles as they possess a high liquid absorption ratio so can absorb blood platelets easily in comparison with traditional haemostasis treatments, which involve compression, ligation, or electrical coagulation etc. When in contact with blood, haemostatic sponges can cause platelet adhesion, aggregation, and thrombosis, preventing blood from flowing out from wounds, triggering the release of coagulation factors, causing the blood to form a stable polymerized fibre protein, forming blood clots, and achieving the goal of wound bleeding control. Haemostatic sponges are found in a variety of shapes and sizes. The aim of this review is to facilitate an overview of recent research around haemostatic sponge materials, products, and technology. This paper reviews the synthesis, properties, and characteristics of haemostatic sponges, together with the haemostasis mechanisms of haemostatic sponges (composite materials), such as chitosan, cellulose, gelatin, starch, graphene oxide, hyaluronic acid, alginate, polyethylene glycol, silk fibroin, synthetic polymers silver nanoparticles, zinc oxide nanoparticles, mesoporous silica nanoparticles, and silica nanoparticles. Also, this paper reviews commercial sponges and their properties. In addition to this, we discuss various in-vitro/in-vivo approaches for the evaluation of the effect of sponges on haemostasis.
PubMed: 37122895
DOI: 10.1016/j.bioactmat.2023.04.008 -
EClinicalMedicine Mar 2024Due to the rarity of pelvic haemophilic pseudotumour (PHPT) and demanding surgical technique for PHPT excision, no study reports the mid-term follow-up outcomes of...
BACKGROUND
Due to the rarity of pelvic haemophilic pseudotumour (PHPT) and demanding surgical technique for PHPT excision, no study reports the mid-term follow-up outcomes of surgical treatment of PHPT in a relatively large cohort. PHPT with varying degrees of bony pelvic involvement and infection status necessitates different operative procedures, yet there is currently no classification system for PHPT based on surgical practice.
METHODS
The study was conducted between June 25, 2004 and July 18, 2023, in Peking Union Medical College Hospital and Nanfang Hospital in China. We performed a retrospective analysis involving 21 patients with 24 PHPTs with a mean follow-up period of 7.1 years. The demographic information, PHPT characteristics, surgical data, and perioperative complications were analysed.
FINDINGS
21 consecutive male patients with 24 PHPTs (21 primary PHPTs and three recurrent PHPTs) that underwent surgical treatment were involved in the study. A classification system including four subtypes was introduced as (I) PHPT confined to soft tissue; (II) PHPT involving bony pelvic without pelvic discontinuity; (III) PHPT causing pelvic discontinuity; (IV) Infectious PHPT. Of the 24 PHPTs, 11 (45.8%) were identified as Type I, five (20.8%) as Type II, three (12.5%) as Type III, and five (20.8%) as Type IV. At the time of surgery, the patients had a mean age of 37.0 ± 9.5 years (Range, 24-52 years). The mean maximum diameter of PHPTs upon surgery was 17.0 ± 7.7 cm (Range, 4.3-40.0 cm). The mean surgical duration was 192 ± 77 min (Range, 60-330 min) and the median intraoperative blood loss was 400 mL (IQR, 225-950 mL, Range, 100-3000 mL). One patient (4.8%) underwent intraoperative cardiopulmonary arrest and expired the following week. Four PHPTs (16.7%) presented postoperative wound infections and poor wound healing. During the follow-up period, five PHPTs (20.8%) experienced pseudotumour recurrence.
INTERPRETATION
Our findings suggest that surgical treatment for PHPTs is feasible and relatively safe. Symptomatic and progressive PHPTs should undergo surgical intervention as early as possible to minimise the surgical risks. Intraoperative use of abundant gelatin sponges in PHPT excision draws attention to severe embolism complications.
FUNDING
There are no sources of funding for this manuscript.
PubMed: 38435760
DOI: 10.1016/j.eclinm.2024.102497 -
Ethiopian Journal of Health Sciences Jan 2020Gossypiboma (retained surgical sponge) is a rare medical event. It could cause a serious complication that can threaten patients' life. Its diagnosis is usually... (Review)
Review
BACKGROUND
Gossypiboma (retained surgical sponge) is a rare medical event. It could cause a serious complication that can threaten patients' life. Its diagnosis is usually difficult because the clinical symptoms are nonspecific and the imaging findings are often inconclusive.
CASE PRESENTATIONS
We present two cases, a 32 years old woman who passed a retained surgical sponge via rectum 5 months after cesarean section and a 30 years old lady presented with an acute abdomen that later found to have localized right lower quadrant abscess with a retained surgical sponge.
CONCLUSION
The most important approach to reduce the incidence of gossypiboma is prevention. At the end of the surgery, a correct count is always the gold standard safeguard against it. Although errors are not to be completely avoided, continuous CPD and strict adherence to rules of the operating room will reduce its incidence to a minimum.
Topics: Abdomen, Acute; Adult; Cesarean Section; Female; Foreign Bodies; Humans; Incidence; Postoperative Complications; Pregnancy
PubMed: 32116444
DOI: 10.4314/ejhs.v30i1.19 -
Methods in Molecular Biology (Clifton,... 2022Sponges (Porifera), basal nonbilaterian metazoans, are well known for their high regenerative capacities ranging from reparation of a lost body wall to whole-body...
Sponges (Porifera), basal nonbilaterian metazoans, are well known for their high regenerative capacities ranging from reparation of a lost body wall to whole-body regeneration from a small piece of tissues or even from dissociated cells. Sponges from different clades utilize different cell sources and various morphological processes to complete the regeneration. This variety makes these animals promising models for studying the evolution of regeneration in Metazoa. However, there are few publications concerning the regenerative mechanisms in sponges. This could be partially explained by the delicacy of sponge tissues, which requires modifying and fine adjusting of common research protocols. The current chapter describes various methods for studying regeneration processes in the marine calcareous sponge, Leucosolenia. Provided protocols span all significant research steps: from sponge collection and surgical operations to various types of microscopy and immunohistochemical studies.
Topics: Animals; Porifera
PubMed: 35359303
DOI: 10.1007/978-1-0716-2172-1_4 -
International Journal of Nephrology and... 2019Medullary Sponge Kidney (MSK) disease is a rare congenital malformation of the distal nephron where cystic dilatation is appreciable in the collecting ducts and renal...
Medullary Sponge Kidney (MSK) disease is a rare congenital malformation of the distal nephron where cystic dilatation is appreciable in the collecting ducts and renal papillae. Most cases of the malformation are thought to arise from a malfunction within neurotrophic factor and tyrosine kinase interactions. Presentation and prognosis are usually indolent; however, they include urinary tract infections (UTI), nephrolithiasis and nephrocalcinosis, distal renal tubular acidosis (dRTA) and hypocitraturia. With an insidious and asymptomatic onset, MSK is a difficult renal manifestation to both diagnose and treat. Difficulty diagnosing MSK today arises from clinical settings deviating from the usage of contrast methods when assessing the urogenital tract. Many healthcare standards for kidney disorders center diagnosis around imaging techniques rather than contrast methods. This ultimately leads to a decrease in the total number of confirmed cases of MSK. Though intra-venous urogram (IVU) remains as the current gold standard to diagnose MSK, other methods such as endoscopy and Multi-detector computed tomography (MDCT) are being put into place. Endoscopic examination and renal biopsy may allow definitive diagnosis; however, such invasive methods may be considered excessive. Moving forward, differential diagnoses for MSK can be made more precisely when patients present with other renal manifestations, especially in groups at risk. These groups include patients between the age of 20 and 30, patients with other renal malformations, high sodium diet patients, hyperparathyroid patients, and patients with family history of MSK. Basic treatment is aimed at controlling stone formation by stabilizing urinary pH. Treatment for patients, especially those prone to forming stones, includes the application of potassium citrate compounds, prophylactic water and diet control, surgical intervention or lithotripsy for removal of symptomatic kidney stones.
PubMed: 31576161
DOI: 10.2147/IJNRD.S169336