According to the history and physical examination of the patient, the patient may have a upper gastrointestinal bleed most probably from a bleeding peptic ulcer. A bleeding peptic ulcer can cause abdominal pain and vomiting described as coffee ground vomit because of the reaction of the blood with the stomach acids. The patient's vital signs signify that the patient is in the state of hypovolemic shock. The emergency medicine consultant should use an oxygen mask with caution because additional vomiting episodes may recur and if the patient is wearing an oxygen mask, the vomit cannot be cleared thoroughly and may even cause aspiration.
Answer:
3
Explanation:
An hypothesis is a proposed explanation to an observation or an intelligent guess about a phenomenon made with little evidence at the beginning before proceeding to do further investigation or research. The most appropriate way to scientifically evaluate the hypothesis is to scatter seeds in several areas of the meadow and observed whether they will start to grow.
The complete question is :
As an epidemiologist you are going to investigate the effect of a drug suspected of causing malformations in newborn infants when the drug in question is taken by pregnant women during the course of their pregnancies. As your sample you will use the next 200 single births occurring in a given hospital. For each birth a medication history will be taken from the new mother and from her doctor; in addition, you will review medical records to verify use of the drug. [N.B.: These mothers are considered to have been followed prospectively during the entire course of their pregnancies, because a complete and accurate record of drug use was maintained during pregnancy.] The resultant data are: Forty mothers have taken the suspected drug during their pregnancies. Of these mothers, 35 have delivered malformed infants. In addition, 10 other infants are born with malfunctions. What is the relative risk between exposure to the drug and malformations?
Answer:
14
Explanation:
- The relative risk is a measure that is used to calculate or compare the likelihood or the chance that an event would occur while comparing the two groups.
- To calculate the relative risk, the probability of an event occurring in one group is compared with the probability of the event occurring in another group and this is done by dividing the probability of one group by another.
- The value of relative risk is always either zero or greater than zero but it cannot be negative.
- The value 1 indicates neutrality.
- The probability of an event = no. of favorable outcomes/ total no. of outcomes
- For the given question, 35 mothers out of 40 delivered infants that were malformed, so the probability of delivering malformed infants is 35/40.
- Out of the 200 births, 40 have occurred so total births left is 200 - 40 = 160
- Therefore, the probability of the second event is 10/160.
- Therefore relative risk is = (35/40)/(10/160) = (0.875/0.062) = 14
1. availableity of the resource
2. the environmental impact of the resource
3. the renewability of the resource
4. the cost of the resource
5. the amount of energy it can produce and of what kind
It would be B. micropipette because you can measure more precisely with this form of lab apparatus.
