Interruption of the tricuspid regurgitant jet: A possible consequence of reflected waves.

Reflected pressure waves can impact central aortic pressure, and can cause notching of the pulmonic valve Doppler signal. However, reflected waves in the venous system usually do not achieve a high enough velocity to alter Doppler flow patterns. Herein we report a case of systolic notching of the tricuspid regurgitant signal that likely resulted from reflected venous waves.

Surgical management of a collateral arch channel and aortic coarctation.

BACKGROUND: The atretic connection between the left fourth and sixth aortic arches is a rare congenital cardiac anomaly with controversial debates on its origin. This anatomy has been previously reported with additional cardiac anomalies of maldevelopment. AIMS: We present the successful surgical management of a 3-month-old female with Cornelia de Lange syndrome and coarctation of the aorta in the setting of this unique collateral channel. MATERIALS & METHODS: We review the beneficial utility and novelty of three-dimensional computed tomography angiography for this anatomic lesion while also discussing the importance of multidisciplinary preoperative planning in the coordinated management of this arch anomaly and potential concomitant comorbid conditions. RESULTS: The presented surgical case demonstrates the successful reconstruction of the aortic arch by coarctectomy with extended end-to-end anastomosis by a left posterolateral thoracotomy in a patient with a collateral arch channel and a hemodynamically significant aortic coarctation. CONCLUSION: Atretic connection between the left fourth and sixth aortic arches remains a rare congenital anomaly and may occur in the setting of an aortic coarctation. Unclear arch anatomy and indeterminant proximal aortic sizing on echocardiogram should prompt cross-sectional imaging with computed tomography angiography to guide surgical technique selection for aortic arch reconstruction when a collateral arch channel or unique branching pattern is suspected.

Frequency of varicella zoster virus DNA in human adrenal glands.

Varicella zoster virus (VZV) becomes latent in ganglionic neurons derived from neural crest cells. Because the adrenal gland also contains medullary chromaffin cells of neural crest origin, we examined human adrenal glands and medullary chromaffin cell tumors (pheochromocytomas) for VZV and herpes simplex virus type 1 (HSV-1). We found VZV, but not HSV-1, DNA in 4/63 (6 %) normal adrenal glands. No VZV transcripts or antigens were detected in the 4 VZV DNA-positive samples. No VZV or HSV-1 DNA was found in 21 pheochromocytomas.

Reproductive health among women of child-bearing age after surgery for Rheumatic Heart Disease in Rwanda.

OBJECTIVE: To determine maternal and fetal outcomes in postoperative women with RHD who become pregnant after valve surgery and evaluate current anticoagulation management during pregnancy. METHODS: Data from the Rwandan RHD cardiac surgical registry identified all female patients who underwent valve surgery before or during childbearing age since 2006. 136 participants completed a mixed-methods questionnaire detailing each pregnancy after surgery, including anticoagulation regimen and outcomes. RESULTS: 38.2% (n=136) of patients reported at least one pregnancy after surgery, of which more than half were unintentional (53.9%, n=52). Among those with mechanical valves, most remained on warfarin alone during pregnancy (58.5%, n=53) while one third were switched to low molecular weight heparin during the first, second, or third trimesters (5 vs. 4 vs. 7, n=18). Women with bioprosthetic valve replacement or valve repair were more likely to experience live term births (84.6% vs 45.3%, p<0.01) and less likely to report spontaneous abortion (3.9% vs 30.2%, p<0.01) compared to women with mechanical valve replacement. Excessive bleeding was the most common complication during pregnancy (9.1%, n=79), and two infants were diagnosed with congenital defects associated with warfarin embryopathy (4.8%, n=42). CONCLUSIONS: Despite preoperative counseling discouraging conception, many women with prosthetic valves still become pregnant after surgery. The results of this study will inform evidence-based and context-specific practices for anticoagulation during pregnancy in Rwanda and the region.

Pediatric Resident Communication of Hospital Discharge Instructions.

OBJECTIVE: Suboptimal provider-parent communication contributes to poor parent comprehension of pediatric discharge instructions, which can lead to adverse outcomes. Residency is a critical window to acquire and learn to utilize key communication skills, potentially supported by formal training programs or visual reminders. Few studies have examined resident counseling practices or predictors of counseling quality. Our objectives were to (1) examine pediatric resident counseling practices and (2) determine how formal training and presence of discharge templates with domain-specific prompts are associated with counseling. METHODS: We conducted a cross-sectional survey of a convenience sample of residents in the American Academy of Pediatrics Section on Pediatric Trainees. Outcomes included resident self-report of frequency of (1) counseling in domains of care and (2) use of health literacy-informed counseling strategies (pictures, demonstration, Teach Back, Show Back) (6-point scales; frequent = often/usually/always). Predictor variables were (1) formal discharge-related training (e.g., lectures) and (2) hospital discharge instruction template with space for individual domains. Logistic regression analyses, utilizing generalized estimating equations when appropriate to account for multiple domains (adjusting for resident gender, postgraduate year), were performed. KEY RESULTS: Few residents (N = 317) (13.9%) reported formal training. Over 25% of residents infrequently counsel on side effects, diagnosis, and restrictions. Resident reported use of communication strategies was infrequent: drawing pictures (24.1%), demonstration (15.8%), Teach Back (36.8%), Show Back (11.4%). Designated spaces in instruction templates for individual domains were associated with frequent domain-specific counseling (adjusted odds ratio [aOR] 4.1 [95% confidence interval: 3.5-4.8]). Formal training was associated with frequent Teach Back (aOR 2.6 [1.4-5.1]) and Show Back (aOR 2.7 [1.2-6.2]). CONCLUSIONS: Lack of formal training and designated space for domain-specific instructions are associated with suboptimal counseling at discharge by pediatric residents. Future research should focus on determining the best mechanisms for teaching trainees communication skills and optimizing written instruction templates to support verbal counseling. [HLRP: Health Literacy Research and Practice. 2023;7(4):e178-e186.].

PLAIN LANGUAGE SUMMARY: Pediatric residents infrequently counsel about several important domains of care or use health literacy-informed counseling strategies. Resident receipt of formal training in communication practices and presence of written instruction templates are associated with higher quality counseling. Future research is needed to determine how to better support trainees in learning how to provide high quality and effective communication with parents.