1.Definition It is directly caused by chronic alterations in pulmonary circulation or chronic chest diseases that lead to pulmonary arterial hypertension, right ventricular enlargement, even right heart failure
Background Sedative-hypnotics are a group of drugs that cause CNS depression. Benzodiazepines (BZD) barbiturates nonbarbiturate nonbenzodiazepine sedativehypnotics (NBNB) the most commonly used agents