ODP291 A Series of COVID Reinfections in a Vaccinated Patient leading to Development of Neurogenic Orthostatic Hypotension and Postural Orthostatic Tachycardia

The recently recognized 'long COVID' syndrome, encompasses symptoms of shortness of breath, chest pain, palpitations and orthostatic intolerance which can last for weeks or more following even mild illness. 'Long COVID' is postulated to be related to a virus- or immune-mediated disruption of the autonomic nervous system resulting in orthostatic intolerance syndromes. We report a 32-yr old female nurse who presented to the endocrinology clinic for symptoms of orthostatic hypotension following two COVID 19 infections. She had received 1 dose of Moderna vaccine in February and March of 2021 respectively. She was hospitalized for COVID June and September of 2021. Following the first hospitalization, she developed severe orthostatic hypotension, chest pain, shortness of breath, fatigue, anxiety, memory, concentration and word finding difficulty. Blood pressure ranged from 110/78 to 124/82 while lying and from 85/45 to 103/59 while standing. HR ranged from 88 to 96 while lying and from 130 to 42 while standing. She was started on midodrine 10 mg three times daily which was discontinued due to patient intolerance. She followed a regimen of adequate hydration, adequate salt intake, fall precautions, physical and speech therapy and high protein/low carb diet with frequent snacks, which improved her symptoms of dizziness and orthostasis, but without complete resolution. However, symptoms of anxiety, dizziness, chest pain and palpitations became even worse after the second hospitalization. She was started on Propranolol 20 mg 2-3 times daily depending on symptoms, and she felt better with this intervention. Evaluation for secondary causes of hypotension were all negative [Cortisol of 19 ug/dL (n=5.3-22.5); ACTH 20 pg/mL (n=0-47); TSH 2.36 uIU/mL (n=0.358 -3.74); Free T4 0.97 ng/dL (n=0.76-1.46); B12 480 pg/mL (n=193-986); Hba1c 4.9%; 25 OH Vitamin D 24.3 ng/mL; tryptase 3.7 mcg/L (n= <11); Sed rate 4 mm/HR (n=0-20). CBC, CMP, TPO and Tg abs, troponin levels, iron studies, ANA panel, Rheumatoid factor, anti-CCP abs, myasthenia gravis panel], CT head and MRI brain, EKG and QTc interval. Echocardiogram= small PFO. 'Post-acute COVID' refers to persistent symptoms 3 weeks after COVID-19 infection, while 'Chronic COVID' describes symptoms lasting more than 12 weeks. Symptoms include fatigue, dyspnea, chest pain, palpitations, dizziness, body aches, presyncope and orthostatic intolerance. Individuals may even develop post-traumatic stress disorder, panic attacks and irritable bowel syndrome. Orthostatic intolerance occurs due to release of epinephrine and norepinephrine leading to development of palpitations, breathlessness, and chest pain. It has been well described that orthostatic intolerance is preceded by viral infections and is associated with the development of autoantibodies α-/β-adrenoceptors and muscarinic receptors. COVID 19 itself can affect the autonomic nervous system through the release of a cytokine storm leading to sympathetic activation. It is crucial to consider the diagnosis of orthostatic intolerance syndromes post COVID infection. Presentation: No date and time listed