vitals object format:

Key	Type	POST/PUT requests	Notes
blood_pressure_1	integer	optional	Systolic
blood_pressure_2	integer	optional	Diastolic
head_circumference	string	optional
head_circumference_units	string	optional	One of "inches" or "cm"
height	decimal	optional
height_units	string	optional	One of "inches" or "cm"
oxygen_saturation	decimal	optional
pain	string	optional	Usually an integer between 1 and 10
pulse	integer	optional	Beats per minute
respiratory_rate	integer	optional	Breaths per minute
smoking_status	string	optional	Either "blank" or the appropriate SNOMED code
temperature	decimal	optional
temperature_units	string	optional	One of "f" or "c"
weight	decimal	optional
weight_units	string	optional	One of "lbs" or "kg"
bmi	float	read-only	Automatically computed from height & weight