Sinus Bradycardia as a Rare and Unusual Presentation of Partial Empty Sella Syndrome: A Case Report.

BACKGROUND Empty sella syndrome (ESS) occurs when the pituitary gland becomes flattened or shrinks, which leads to filling of the sella turcica with cerebrospinal fluid. This causes the appearance of empty sella on imaging. ESS is often diagnosed after the workup of pituitary disorders, or as an incidental finding after brain imaging. To the best of our knowledge, this is the first case report in which ESS was diagnosed after an incidental finding of bradycardia pre-operatively. CASE REPORT We present the case of a 66-year-old man who was admitted electively to undergo a transforaminal lumbar interbody fusion at the level of L5-S1. He was found to be bradycardic pre-operatively. Upon further workup, he was found to have a thyroid-stimulating hormone (TSH) level of 0.358 uIU/ML (normal range, 0.465-4.680 uIU/ML) and a free thyroxine (FT4) level of 0.8 ng/dL (normal range, 0.8-2.2ng/dL). He also had a history of hypotestosteronemia. He was diagnosed with central hypothyroidism at the time of admission. Subsequently, a magnetic resonance imaging (MRI) scan of the brain was performed, and partial empty sella syndrome was diagnosed. CONCLUSIONS Bradycardia in the setting of empty sella syndrome is a rare condition. It is of utmost importance for clinicians to keep in mind a wide differential that includes other non-cardiac causes for common cardiac symptoms such as bradycardia.

Reversible atrioventricular block and the importance of close follow-up: Two cases of Lyme carditis.

Lyme carditis is an uncommon presentation of the early-disseminated phase of Lyme disease, although it is recognizable and often curable. Because of its rarity, diagnosing Lyme carditis requires a high level of suspicion, especially when young patients in certain endemic areas present with symptoms of bradycardia and/or evidence of high-degree atrioventricular (AV) block. Temporary cardiac pacing along with antibiotic therapy has been shown to aid in the management of Lyme carditis until symptoms and conduction blocks have resolved. Herein, we report two cases of Lyme carditis-induced AV block that were successfully managed and reversed with temporary cardiac pacing and antibiotics. In order to monitor for any late sequela that may arise, we also recommend close follow-up for patients treated for Lyme carditis with high-degree AV block. .

Acute aortoiliac occlusive disease during percutaneous transluminal angioplasty in the setting of ST-elevation myocardial infarction: a case report.

BACKGROUND: Aortoiliac occlusive disease, which is also referred to as Leriche syndrome, is a chronic atherosclerotic occlusive disease that occurs at the level of the aortic bifurcation. It is often thought to present with a triad of clinical symptoms: (1) intermittent lower extremity vascular claudication, (2) impotence, and (3) weak/absent femoral pulses. CASE PRESENTATION: We report a case of a 47-year-old Caucasian woman who presented with an acute inferior ST-elevation myocardial infarction. During percutaneous transluminal angioplasty, our patient suddenly developed severe bilateral lower extremity pain, absent femoral pulses, and cool extremities. Distal aortogram revealed 95% stenosis with an apple core-like lesion in the mid-abdominal aorta. Stent placement resulted in improved blood flow to the distal aortic segment and resolution of symptoms. CONCLUSIONS: The presence of significant peripheral vascular disease, significant cardiac risk factors, and/or difficulty accessing the femoral artery should caution a transfemoral approach during percutaneous transluminal angiography. This approach may precipitate aortoiliac occlusion and/or thromboembolism to the lower extremities. We encourage interventional cardiologists to (1) take extra caution when manipulating the wire and catheter and (2) strongly consider using a transradial approach in such patients.