Causas anatómicas inusuales de malposición de catéteres venosos centrales / Unusual anatomical causes of malposition of central venous catheters

Resumen: La malposición de los catéteres venosos centrales se asocia a importantes riesgos, a menudo infraestimados. Aunque se han descrito algunos factores que pueden favorecer la malposición, generalmente su causa no llega a diagnosticarse y parece ser de origen multifactorial. Presentamos dos casos de malposición de catéteres venosos centrales motivadas por causas anatómicas inusuales, diagnosticadas en el perioperatorio. En el primer caso, se diagnostica una agenesia de vena cava superior en el transcurso de una sustitución mitral por esternotomía, que lógicamente se asocia con una malposición de la vía central insertada. La utilización de catéteres y dispositivos a través de venas yugulares y subclavias en pacientes con esta infrecuente patología implica importantes limitaciones y complicaciones potenciales graves. En el segundo caso, la existencia de un bocio no diagnosticado provoca la malposición bilateral y simultánea de dos catéteres venosos canalizados, en el contexto de una situación de emergencia, en ambas venas yugulares internas.

Abstract: Malposition of central venous catheters is associated with important and underestimated risks. Although some factors have been related with malposition, its cause is generally not diagnosed, and it seems to have multifactorial origin. We present two cases of central venous catheter malposition due to unusual anatomical causes, diagnosed in the perioperative period. In the first case, superior vena cava agenesis was diagnosed during mitral replacement by sternotomy, which was logically associated with malposition of the inserted central line. The use of catheters and devices through jugular and subclavian veins in patients with this infrequent pathology is associated with important limitations and serious potential complications. In the second case, an undiagnosed goiter causes bilateral and simultaneous malpositioning of two inserted central venous catheters, in the context of an emergency situation, in both internal jugular veins.

Entrecruzamiento del orbicular para el entropión senil mediante técnica de Martínez-Rodríguez modificada / Orbicularis Crosslinking for Senile Entropion Using the Modified Martinez-Rodríguez Technique

Objetivo: Describir los resultados de la técnica de entrecruzamiento del orbicular, descrita por profesores eméritos del Pando Ferrer, en el entropión senil. Métodos: Se realizó un estudio observacional descriptivo longitudinal retrospectivo con pacientes atendidos en el Instituto Cubano de Oftalmología Ramón Pando Ferrer entre enero del 2021 a junio de 2022. La muestra estuvo constituida por pacientes operados con entropión senil con la técnica de Martínez Rodríguez modificada. Se les realizó examen ocular completo con seguimiento a las 24 h, 7 y 15 días, al mes y a los tres meses posteriores a la cirugía. Las variables utilizadas fueron edad, sexo, lateralidad, tiempo de cirugía y complicaciones. Resultados: La edad media fue de 79,26 años, con predominio del sexo masculino (69,56 por ciento) en 23 pacientes y 26 párpados; siendo 20 casos unilaterales y 3 bilaterales. Se reportó una complicación de hipocorreción (3,84 por ciento) y un tiempo medio de 11,9 minutos. Conclusiones: La técnica descrita es un abordaje efectivo demostrado en la baja frecuencia de complicaciones, sencillo y poco invasivo para entropión senil sin laxitud horizontal grave(AU)

Objective: To describe the results of the orbicularis crosslinking technique, described by emeritus professors from Pando Ferrer institute, in senile entropion. Methods: A retrospective, longitudinal, descriptive and observational study was carried out with patients who received attention at Instituto Cubano de Oftalmología Ramón Pando Ferrer between January 2021 and June 2022. The sample consisted of patients with senile entropion operated on with the modified Martinez-Rodriguez technique. They underwent a complete ocular examination with follow-up at 24 hours, 7 and 15 days, one month and three months after surgery. The used variables were age, sex, laterality, surgery time and complications. Results: The mean age was 79.26 years, with a predominance of the male sex (69.56 percent) in 23 patients and 26 eyelids; there were 20 unilateral cases and 3 bilateral ones. One complication of hypocorrection (3.84 percent) and a mean time of 11.9 minutes were reported. Conclusions: The described technique is an effective approach for senile entropion, demonstrated according to the low frequency of complications, as well as simple and minimally invasive and without severe horizontal laxity(AU)

Streptococcus canis prostatitis and endocarditis with thromboembolism in a dog with sertoli cell tumour in a cryptic testis and prostatic squamous metaplasia.

We describe an unusual case of prostatitis caused by Streptococcus canis evolving to endocarditis and splenic, renal, and cerebral thromboembolism in a dog, associated with a Sertoli cell tumour in a cryptic testis and diffuse prostatic squamous metaplasia. A nine-year-old, intact male, mixed-breed dog was presented to a veterinary teaching hospital with abdominal pain and prostration. Physical examination and abdominal ultrasonography revealed an atrophic right testicle located in the subcutaneous tissue. The left testicle was in the abdominal cavity with increased dimensions and irregular contours. Complete blood count analysis showed marked neutrophilic leukocytosis and thrombocytopenia. After clinical worsening, euthanasia was performed, and the dog was submitted to post-mortem examination. The main gross findings included testicular malposition with one cryptic and one ectopic testis, enlarged prostate with purulent content, distension of the urinary bladder with cloudy urine, vegetative valvular endocarditis in the mitral valve, and spleen and renal infarcts. Histological examination showed a Sertoli cell tumour in the abdominal testis, diffuse prostatic squamous metaplasia with marked keratinization associated with bacterial prostatitis, fibrinonecrotic cystitis, bacterial endocarditis with marked myxomatous degeneration in the mitral valve, and splenic, renal, and cerebral thromboembolism. Microbiological analysis identified Streptococcus canis in the prostate and mitral valve. Sertoli cell tumour of cryptic testis increases oestrogen production and leads to squamous metaplasia of the prostate, which should be considered as predisposing factors for ascending S. canis infection from the urogenital tract to the prostate. Then, haematogenous spread of S. canis from the prostate to mitral valve cause endocarditis and subsequent thromboembolism and infarcts, all decisive to poor prognosis in this case.

Acute hemodialysis catheter follows the path of least resistance.

The placement of large bore double-lumen catheters for hemodialysis (HD) is one of the most frequent procedures performed in HD patients. However, these procedures are associated with complications, the most common being catheter malposition. In this context, catheter deviation to the left superior intercostal vein (LISV) is a very uncommon malposition, which must be differentiated from intrathoracic extravascular catheter lodgment. We report a case of an adult male patient on hemodialysis who presented with a thrombosed arteriovenous fistula and requiring urgent HD. His past medical history included hemophilia, allergy to contrast media, and multiple previous central vein catheterizations. A non-tunneled HD catheter was placed without any difficulty in the left internal jugular vein. However, the arterial lumen failed to pull any blood with free flow in the venous lumen. A chest X-ray revealed a surprising finding. The malpositioned catheter was removed successfully without any complications.

Prophylactic rotation for malposition in the second stage of labor: a systematic review and meta-analysis of randomized controlled trials.

OBJECTIVE: This study aimed to evaluate if manual rotation, undertaken during labor, of fetuses in occiput posterior or occiput transverse position led to an increased rate of spontaneous vaginal delivery. DATA SOURCES: Searches were performed in MEDLINE, Ovid, Scopus, ClinicalTrials.gov, and the Cochrane Central Register of Controlled Trials with the use of a combination of keywords and text words related to "occiput posterior," "occiput transverse," and "manual rotation" from inception of the databases to July 2021. STUDY ELIGIBILITY CRITERIA: We included all randomized controlled trials evaluating manual rotation of fetuses in the occiput posterior or occiput transverse position during labor. METHODS: The primary outcome was the rate of spontaneous vaginal delivery. Meta-analyses were performed using the random effects model of DerSimonian and Laird to determine the relative risks or mean differences with 95% confidence intervals. RESULTS: A total of 643 records were screened with inclusion of 6 articles and 1002 randomized patients. All included studies compared manual rotation of fetuses in occiput posterior or occiput transverse position, all confirmed using ultrasound examinations, after complete cervical dilation with either no rotation or a sham rotation procedure. There was no difference in the rate of spontaneous vaginal delivery with manual rotation (relative risk, 1.07; 95% confidence interval, 0.95-1.20) nor was there any difference in any other maternal or fetal outcomes. In a subgroup analysis of occiput posterior fetuses, there was a 12.80-minute decrease in the length of the second stage of labor in the manual rotation group (mean difference, -12.80; 95% confidence interval, -22.61 to -2.99). There were no significant differences in any other maternal or fetal outcomes in the occiput posterior subgroup and no differences in the occiput transverse subgroup. CONCLUSION: Prophylactic manual rotation of fetuses in occiput posterior or occiput transverse position, confirmed using ultrasound examination, did not increase the rate of spontaneous vaginal delivery compared with no manual rotation. Manual rotation of the occiput posterior fetal head early during the second stage of labor was associated with a significant 12.8-minute decrease in the length of the second stage of labor with no changes in any other maternal or fetal outcomes. There were no differences demonstrated for fetuses rotated from occiput transverse position or for the combination of occiput posterior and occiput transverse fetuses. Because there is some evidence of benefit, prophylactic manual rotation can be offered to patients during the second stage of labor presenting with occiput posterior position of the fetal head documented during ultrasound examination.

Anatomically corrected malposition of the great arteries: a challenging fetal diagnosis.

Anatomically corrected malposed great arteries are uncommon and benign entity. Basically, this occurs with ventriculoarterial concordance in which the great vessels arise parallel instead of a twisting fashion. In this manuscript, we described two cases in which the antenatal diagnosis of anatomically corrected malposition of great arteries was suspected and confirmed during the postnatal period. During the fetal life, this diagnosis remains a challenge and this condition is often misdiagnosed as the transposition of the great arteries (TGA). Differently to TGA, anatomically corrected malposition of the great arteries may not require any cardiac surgical intervention depending on the associated cardiac anomalies. Indeed, postnatal examination for concerns related to anomalies that can be associated with this condition, such as anomalous origins of coronary arteries and left ventricular outflow tract obstruction, should be performed.

The Oro-Helical Length Accurately Predicts Endotracheal Tube Insertion Depth in Neonates.

We evaluated the reliability of the oro-helical length in predicting the ideal endotracheal tube depth in neonates and found the oro-helical length was a consistently more reliable and better predictor of the ideal endotracheal tube depth on chest radiograph than the 7-8-9 rule, especially in infants weighing ≤1500 g.

Evaluation of the placement and maintenance of central venous jugular catheters in critically ill dogs and cats.

OBJECTIVE: To describe problems noted during central venous jugular catheter (CVJC) placement, conditions associated with unsuccessful catheterization, and CVJC maintenance complications. DESIGN: Prospective observational study from September 2014 to September 2015. SETTING: University veterinary teaching hospital. ANIMALS: Twenty-seven dogs and 20 cats hospitalized in a veterinary ICU. Patients were excluded if previously hospitalized with a CVJC or lacked sufficient data. INTERVENTIONS: None. MEASUREMENTS AND MAIN RESULTS: Ninety-one percent of indwelling CVJCs were placed successfully (43/47, 95% CI: 80%, 98%). Procedural-related difficulties that resulted in the inability to place a CVJC totaled 18/63 (28.6%, 95% CI: 18%, 41%) and included the inability to puncture the vessel (10), hematoma (6), malposition (1), and dislodgement (1). Procedural complications occurred in 24/47 patients (51%, 95% CI: 36%, 66%) and included cardiac dysrhythmias (13), hematoma (6), CVJC placement failure (4), and malposition (1). Risk factors associated with multiple catheterization attempts included increased age (7.5 years [± 4.2] vs 10.6 years [± 4.1], P = 0.04), smaller size (8.0 kg [0.6-51.9 kg] vs 4.4 kg [2.6-6.8 kg], P < 0.01) and thinner body condition score (median 5/9 [2/9-9/9] vs 4/9 [2/9-7/9], P = 0.04). The risk factor associated with dysrhythmias was smaller patient size (6.8 kg [2.6-51.9 kg] vs 4.8 kg [0.6-29.5 kg], P = 0.04). Eighteen indwelling complications occurred in 14 patients and included mechanical obstruction (7), skin irritation (6), malposition (4), and inflammation (1). Risk factors for indwelling complications included longer dwell time (5 days [2-30] vs 3 days [1-10], P < 0.01) and the administration of an irritant medication (P = 0.02). CONCLUSIONS: Complications were documented in the placement and maintenance of CVJCs in critically ill patients with a low incidence of life-threatening sequelae. Risk factors associated with both unsuccessful CVJC placement and indwelling CVJC complications were identified.

Labrets in Africa and Amazonia: medical implications and cultural determinants.

The custom of wearing labrets has a long tradition. Labrets appeared independently several thousand years ago in various culture groups in Asia, Europe, Africa and the Americas. Today, apart from diverse body modifications as increasingly practiced in western civilisations, lip plates and plugs are found among a small number of tribal groups only in Africa and Amazonia. We summarise the history of labrets in different societies, describe medical consequences of wearing lip plates and plugs for jaws and teeth and address relevant cultural issues.

Oral Manifestations in Adolescents and Their Impact on Social Discrimination / Manifestaciones Orales en Adolescentes, Su Impacto con la Discriminación Social

Adolescents between 12 and 13 years of age suffer social discrimination and low self-esteem because of their physical appearance. The objective of this study was to evaluate the presence of oral manifestations such as dental malposition, gummy smile, halitosis, and bone malformations of the maxillary and jaw, and determine their social impact on adolescents. A descriptive study was performed in secondary school adolescents between 12 and 13 years of age. First, an interview was carried out to identify the impact of oral manifestations as a cause of social discrimination and then clinical examination was performed. It was found that in adolescents, oral manifestations cause social discrimination. Dental malposition was the main cause (81 %), followed by gummy smile (29 %), maxillary and jaw bone malformations (16 %) and halitosis (11 %). Of those interviewed, 90 % expressed having received negative comments about their oral cavity and 81 % referred the need for dental care; 72 % felt discriminated by their classmates and 65 % did not like to speak in public (p <0.005). It was concluded that a relationship exists between oral manifestations and social discrimination in adolescents.

Actualmente los adolescentes entre 12 y 13 años sufren discriminación social y por ende baja autoestima, debido al bullying provocado por el aspecto físico. Evaluar la presencia de manifestaciones orales como, malposición dental, sonrisa gingival, halitosis, malformaciones óseas del maxilar y mandíbula y su impacto en la discriminación social de los adolescentes. Se realizó un estudio descriptivo en adolescentes entre 12 y 13 años que cursaban nivel básico, primeramente se aplicó una entrevista para identificar el impacto de las manifestaciones orales como desencadenantes de discriminación social seguido de un examen clínico. Se identificó que existe discriminación social en los adolescentes debido a las manifestaciones orales. La malposición dental fue la principal desencadenante (80,65 %), seguido de sonrisa gingival (29,03 %), malformaciones óseas del maxilar y la mandíbula (16,13 %) y halitosis (11,29 %). El 90,33 % de los encuestados expresó haber recibido comentarios negativos acerca de su cavidad oral y el 80,65 % refirió la necesidad de atención odontológica. Se han sentido discriminados por sus compañeros 72,20 % y no les gusta hablar en público 64,52 % (p <0,005). Es posible concluir que existe relación entre las manifestaciones orales que presentaron los adolescentes y que impactan en su discriminación social, ya que expresaron sentir discriminación por sus compañeros, por lo que les gustaría cambiar su aspecto físico.

When one port does not return blood: two case reports of rare causes for misplaced central venous catheters / Quando uma porta não apresenta retorno sanguíneo: relato de dois casos de causas raras de mau posicionamento de cateter venoso central

We present two cases of misplaced central venous catheters having in common theabsence of free blood return from one lumen immediately after placement. The former is acase of right hydrothorax associated with central venous catheterization with the catheter tipin intra-pleural location. In this case the distal port was never patent. In the latter case therewas an increased aspiration pressure through the middle port due to a catheter looping.The absence of free flow on aspiration from one lumen of a central catheter should not beundervalued. In these circumstances the catheter should not be used and needs to be removed.

Apresentamos dois casos de mau posicionamento de cateter venoso central. Têmem comum a ausência do retorno sanguíneo livre em um dos lúmens imediatamente após acolocac¸ão. O primeiro é um caso de hidrotórax direito associado ao cateterismo venoso central,com a ponta do cateter em localizac¸ão intrapleural. Nesse caso, a porta distal nunca estevepatente. No segundo caso houve um aumento da pressão de aspirac¸ão através da porta medialpor causa da formac¸ão de alc¸a no cateter.A ausência de fluxo livre na aspirac¸ão de um lúmen do cateter central não deve ser subesti-mada. Nessas circunstâncias, o cateter não deve ser usado e deve ser removido.

When one port does not return blood: two case reports of rare causes for misplaced central venous catheters.

We present two cases of misplaced central venous catheters having in common the absence of free blood return from one lumen immediately after placement. The former is a case of right hydrothorax associated with central venous catheterization with the catheter tip in intra-pleural location. In this case the distal port was never patent. In the latter case there was an increased aspiration pressure through the middle port due to a catheter looping. The absence of free flow on aspiration from one lumen of a central catheter should not be undervalued. In these circumstances the catheter should not be used and needs to be removed.

Rebozo Technique for Fetal Malposition in Labor.

Fetal occiput posterior position is associated with increased maternal and fetal morbidities. Currently, clinicians have limited evidence-based techniques or tools to remedy fetal occiput posterior position. The traditional Mexican rebozo technique of pelvic massage, sifting, or jiggling offers a potentially valuable tool to help correct fetal malposition. This article reviews the adaptation of 3 rebozo techniques that can be used in labor to encourage optimum fetal positioning; outlines hospital considerations for safety, fetal heart rate monitoring, and universal precautions; and reviews the implementation plan to introduce and sustain use of the rebozo in a large academic medical center.

A acurácia da cirurgia assistida por navegador na artroplastia total do quadril / The accuracy of navigation assisted surgery in total hip arthroplasty

Objetivo: Verificar a acurácia do sistema de navegação quanto aos valores de inclinação/anteversão do componente acetabular e anteversão/alongamento femoral obtidos pelo computador tem mínima variação quando comparados com TC e escanometria. Materiais e métodos: Foram realizadas no HSPE-IAMSPE 36 ATQ com a ajuda do sistema de navegação Orthopilot. Os dados de anteversão/inclinação acetabulares e de anteversão/alongamento femoral, armazenados no computador no intraoperatório, foram comparados posteriormente. Resultados: Foram avaliados 36 pacientes com idade entre 22 e 74 anos (média de 52,53 anos), sendo 19 (52,8%) do sexo feminino. A análise estatística demonstrou não haver diferença estatística significativa entre os valores obtidos para a anteversão acetabular (p=0.964), inclinação acetabular (p=0.096) e anteversão femoral (p=0.350) entre o navegador e a tomografia. A navegação apresentou valores estaticamente diferentes daqueles obtidos com a escanometria (p<0.001). Conclusão: A análise dos dados obtidos demonstrou que o navegador é um acessório a artroplastia total de quadril com acurácia adequada para o posicionamento dos implantes femoral e acetabular. Restrição deve ser feita, contudo, a confiabilidade do navegador em determinar o adequado comprimento final do membro, devendo ser utilizados outros métodos em conjunto.