Question

the nurse is talking with the twin brother of a patient with schizophrenia. the brother asks the nurse if schizophrenia is hereditary, related to birth defects, or caused by stress. what information should the nurse provide the patients brother regarding the pathology of the disease?

select all that apply.

the heritability of the disease is estimated to be 70-90%.
the disease is inherited from the mothers side of the family.
relatives of those with schizophrenia have no greater risk of developing the disease.
the development of schizophrenia has been linked to the labor and delivery phase of pregnancy.
there is evidence that both genetic vulnerability and stressful life events can trigger symptoms of schizophrenia.

Explanation:

Analyze heritability and genetic risk factors

The heritability of schizophrenia is highly significant, with twin and family studies estimating it to be approximately 70% to 90%. It is not inherited exclusively from one parent's side, and relatives of individuals with schizophrenia have a significantly higher risk of developing the disorder compared to the general population.

Evaluate environmental and developmental factors

Schizophrenia has been linked to prenatal and perinatal complications, including obstetric complications during the labor and delivery phase of pregnancy (such as hypoxia). Additionally, the diathesis-stress model is widely accepted, showing that a combination of genetic vulnerability and stressful life events triggers the onset of symptoms.

Select correct options

• Option 1 is correct: Heritability is estimated to be 70-90%.
• Option 2 is incorrect: It is not inherited solely from the mother's side.
• Option 3 is incorrect: Relatives have a much higher risk.
• Option 4 is correct: Links exist to labor and delivery complications.
• Option 5 is correct: Both genetic vulnerability and stressful life events can trigger symptoms.

Answer:

• The heritability of the disease is estimated to be 70-90%. (Correct answer)
• The disease is inherited from the mother's side of the family.
• Relatives of those with schizophrenia have no greater risk of developing the disease.
• The development of schizophrenia has been linked to the labor and delivery phase of pregnancy. (Correct answer)
• There is evidence that both genetic vulnerability and stressful life events can trigger symptoms of schizophrenia. (Correct answer)