Respiratory Depression is basically when breathing is slowed down or labored due to medications. Lexapro alone usually wont do that alone. But sometimes if you mix it with another drug; for me it was seroquel. I had asthmatic type symptoms.
I think an SNRI like Effexor or Cymbalta are good for OCD, but u can try an SSRI like Paxil or Zoloft first.
Other drugs for OCD are Neurolaptics as Invega or Seroquel. Benzos work but are addictive and even Neurontin or lyrica which are mild tranquilizers have potential for abuse.
this is from an article: "hypoventilation (also known as "respiratory depression") occurs when ventilation is inadequate (hypo means "below") to perform needed gas exchange. It generally causes an increased concentration of carbon dioxide (hypercapnia) and respiratory acidosis. It can be caused by medical conditions, by holding one's breath, or by drugs.
* During the early stages of hypoventilation with mild-to-moderate hypercapnia, patients usually are asymptomatic or have only minimal symptoms.
o Patients may be anxious and complain of dyspnea with exertion"