Homozygous means that it has the same alleles and lower case represents a recessive trait therefore the genotype for a homozygous recessive individual is: bb
The CPT code for sympathectomy (since this patient will undergo an experimental cervical sympathectomy) is <span>CPT 64802, Under Excision Procedures on the Sympathetic Nerves. The ICD-10-CM code for Raynaud's syndrome is 443.0.</span>
Answer: The answer is the last option, Backflow of blood through a defective valve.
Explanation: Hypotension causes high blood pressure, and the other two options are not related to heart murmurs. A hear murmur is when the blood isn't flowing in the right direction causing the hear to beat irregularaly.
