Question of the Week 496

{“questions”:{“akel6”:{“id”:”akel6″,”mediaType”:”image”,”answerType”:”text”,”imageCredit”:””,”image”:””,”imageId”:””,”video”:””,”imagePlaceholder”:””,”imagePlaceholderId”:””,”title”:”Author: Melissa Colizza, MD – Stollery Children\u2019s Hospital -Edmonton AB Canada \r\n\r\nA 1-week-old girl with severe pulmonary stenosis, intact ventricular septum, and moderate tricuspid valve regurgitation is status post balloon pulmonary valvuloplasty. Two hours later, the heart rate was 188, with an arterial blood pressure of 46\/19 and oxygen saturation of 88%. A transthoracic echocardiogram […]

Question of the Week 495

{“questions”:{“cw7s2”:{“id”:”cw7s2″,”mediaType”:”image”,”answerType”:”text”,”imageCredit”:””,”image”:””,”imageId”:””,”video”:””,”imagePlaceholder”:””,”imagePlaceholderId”:””,”title”:”Author: Melissa Colizza, MD – Stollery Children\u2019s Hospital, Edmonton Canada \r\nA 15-month-old boy is started on a bivalirudin infusion after placement of a Berlin Heart ventricular assist device. Which of the following tests is MOST frequently used to monitor anticoagulation with bivalirudin? \r\n\r\n”,”desc”:”EXPLANATION \r\nBivalirudin is a direct thrombin inhibitor (DTI) that exerts its anticoagulant effect […]

Question of the Week 494

{“questions”:{“6i5h4”:{“id”:”6i5h4″,”mediaType”:”image”,”answerType”:”text”,”imageCredit”:””,”image”:””,”imageId”:””,”video”:””,”imagePlaceholder”:””,”imagePlaceholderId”:””,”title”:”Author: Melissa Colizza, MD – Stollery Children’s Hospital, University of Alberta, Edmonton, Canada\r\n\r\nA 5-month-old girl with Noonan syndrome and confirmed RIT1 mutation presents with failure to thrive. A transthoracic echocardiogram demonstrates biventricular hypertrophy with a peak subaortic gradient of 88 mmHg. Which of the following medications is MOST likely to produce regression of the underlying […]

Question of the Week 493

{“questions”:{“n9dwa”:{“id”:”n9dwa”,”mediaType”:”image”,”answerType”:”text”,”imageCredit”:””,”image”:””,”imageId”:””,”video”:””,”imagePlaceholder”:””,”imagePlaceholderId”:””,”title”:”Authors: M. Barbic, MD AND M. Gangadharan, MD, FAAP, FASA – Children\u2019s Memorial Hermann Hospital, University of Texas Health Science Center, Houston, TX \r\n\r\nAn echocardiogram obtained on a 26-hour-old, full-term girl due to differential cyanosis and suspected congenital heart disease demonstrates an interrupted aortic arch. Which of the following subtypes of interrupted aortic arch is […]

Question of the Week 492

{“questions”:{“wxgng”:{“id”:”wxgng”,”mediaType”:”image”,”answerType”:”text”,”imageCredit”:””,”image”:””,”imageId”:””,”video”:””,”imagePlaceholder”:””,”imagePlaceholderId”:””,”title”:”Authors: Katarzyna Dlugosz Sledz, MD and M. Gangadharan, MD, FAAP, FASA – Children\u2019s Memorial Hermann Hospital, University of Texas Health Science Center, Houston, TX AND Destiny F. Chau, MD – Arkansas Children\u2019s Hospital\/University of Arkansas for Medical Sciences, Little Rock, AR \r\n\r\nA 20-year-old woman with a history of pulmonary hypertension treated with riociguat presents for […]