Women only: Cannot be pregnant or nursing at baseline or plan to become pregnant during the course of the study
Body Mass Index (BMI) > 32
Weight > 220 pounds
Allergies to shell fish, seafood, eggs or iodine
Heart disease, kidney disease or diabetes
Diagnosis of asthma
Any metal in or on the body (that cannot be removed) between the nose and the abdomen
Any major organ system disease (by judgment of the study medical team)
A glomerular filtration rate of 60 cc per minute or less.
Nitroglycerin usage or nitrates and use of phosphodiesterase 5 (PDE5) inhibitors
Prior history of hypersensitivity to sildenafil
Currently prescribed a phosphodiesterase (PDE) inhibitors medication (ex: Viagra, Cialis, etc)
Known Pulmonary Hypertension
Has used e-cigarettes and marijuana <1 years

NCT03382106_exc_T1
Person
Women
NCT03382106_exc_T3
Measurement
Body Mass Index (BMI)
NCT03382106_exc_T4
Value
> 32
NCT03382106_exc_T5
Measurement
Weight
NCT03382106_exc_T6
Value
> 220 pounds
NCT03382106_exc_T7
Condition
Allergies
NCT03382106_exc_T8
Observation
shell fish
NCT03382106_exc_T9
Observation
seafood
NCT03382106_exc_T10
Observation
eggs
NCT03382106_exc_T11
Drug
iodine
NCT03382106_exc_T12
Scope
shell fish, seafood, eggs or iodine
NCT03382106_exc_T13
Condition
Heart disease
NCT03382106_exc_T14
Condition
kidney disease
NCT03382106_exc_T15
Condition
diabetes
NCT03382106_exc_T16
Condition
asthma
NCT03382106_exc_T17
Device
in or on dy (that
NCT03382106_exc_T18
Device
in or  body (tha
NCT03382106_exc_T19
Qualifier
between the nose and the abdomen
NCT03382106_exc_T20
Scope
metal in or on the body
NCT03382106_exc_T21
Condition
major organ system disease
NCT03382106_exc_T22
Measurement
glomerular filtration rate
NCT03382106_exc_T23
Value
60 cc per minute or less
NCT03382106_exc_T24
Drug
Nitroglycerin
NCT03382106_exc_T25
Drug
nitrates
NCT03382106_exc_T26
Drug
phosphodiesterase 5 (PDE5) inhibitors
NCT03382106_exc_T27
Scope
nitrates and use of phosphodiesterase 5 (PDE5) inhibitors
NCT03382106_exc_T28
Condition
hypersensitivity
NCT03382106_exc_T29
Drug
sildenafil
NCT03382106_exc_T30
Observation
Prior history
NCT03382106_exc_T31
Drug
phosphodiesterase (PDE) inhibitors
NCT03382106_exc_T32
Drug
Viagra
NCT03382106_exc_T33
Drug
Cialis
NCT03382106_exc_T34
Scope
Viagra, Cialis
NCT03382106_exc_T35
Condition
Pulmonary Hypertension
NCT03382106_exc_T36
Observation
used e-cigarettes
NCT03382106_exc_T37
Observation
ttes years
NCT03382106_exc_T38
Temporal
<1 years
NCT03382106_exc_T39
Scope
used e-cigarettes and marijuana