assign procedure code(s) for the following scenario: Esophagojejunostomy via thoracic approach.

Answers

Answer 1

The specifics of the procedure would determine the procedure code(s) for the scenario "Esophagojejunostomy through thoracic route." The code 43637 is one that might be relevant.

The meaning of procedure code 58900

Methods for the Ovary's Excision The American Medical Association (AMA) maintains the Current Procedural Terminology (CPT®) code 58900 as a medical procedural code in the category of Excision Operations on the Ovary.

What is the Esophagram CPT code?

Esophagram has two CPT codes: standard Barium swallow and Modified Barium swallow (74220 and 74230). Both are performed to check for any esophageal function-related anomalies, such as hiatal hernia or gastroesophageal reflux (K21. 9).

Ton know more about esophageal visit:-

https://brainly.com/question/30621936

#SPJ1


Related Questions

Foster is centering a photo that is 5 1 2 inches wide on a scrapbook page that is 14 inches wide. How far from each side of the page should he put the picture? Enter your answer as a mixed number. He should put the picture inches from each side of the page.

Answers

The distance from each side of the page that he should put the picture is 4 1/4.

How to find the distance?

First step is to find the difference in the widths

Difference = 14 - 5.5

Difference = 8.5 inches

Since the page is 8.5 inches now let find the distance by dividing the difference by 2

Distance = 8.5/2

Distance = 4.25

Let convert 4.25 to mixed number

4 1/4

Therefore the distance is 4 1/4 .

Learn more about distance here:https://brainly.com/question/7243416

#SPJ1

1.1 Describe tips which need to be included on current/present history taking of a client. (8) 1.2 Outline the crucial/significant information which you should include in a social history of a​

Answers

When taking a client's current/present history, there are several key tips to keep in mind to ensure a comprehensive and accurate assessment.

Establish rapport: Begin the history-taking process by creating a comfortable and non-judgmental environment. Establish rapport with the client to encourage open and honest communication.

Use open-ended questions: Ask open-ended questions to gather detailed information from the client. This allows them to provide more comprehensive answers and enables a deeper understanding of their current situation.

Gather chief complaint and presenting problems: Start by identifying the client's chief complaint and any specific problems they are experiencing. This helps prioritize the assessment and guides further questioning.

Obtain a medical history: Inquire about the client's medical history, including any chronic conditions, previous surgeries, allergies, and current medications. This information provides context and helps identify potential medical factors influencing their current status.

Explore mental health history: Assess the client's mental health history, including any previous diagnoses, psychiatric treatment, or hospitalizations. This information helps to understand their mental health background and identify any ongoing concerns.

Assess substance use: Ask about the client's history of substance use, including alcohol, tobacco, and illicit drugs. Substance use can significantly impact overall health and may be relevant to the client's current situation.

For more such questions on assessment visit:

https://brainly.com/question/28467175

#SPJ11

How does the heart pump blood

Answers

Answer:

Explanation:

The right ventricle pumps the oxygen-(poor blood) to the lungs through the pulmonary valve. The left atrium receives oxygen-(rich blood) from the lungs and pumps it to the left ventricle through the mitral valve. The left ventricle pumps the oxygen-(rich blood) through the aortic valve out to the rest of the body.

Hope this helped!!!

what do you guys think ab the rona

Answers

Answer:

It's great

Explanation:

Because i dont have to interact w/ people

I hope miss rona dies and never comes back she is honestly annoying and she doesn't deserve my love :)

which of the following is a condition common to basketball and volleyball plsayers characterized by pain irritation immediately inferior to the patella quizet

Answers

Patellar tendinitis is a condition common to basketball and volleyball players characterized by pain irritation immediately inferior to the patella.

Patellar tendinitis is a common overuse injury, caused by repeated stress on your patellar tendon. The stress results in tiny tears in the tendon, which your body attempts to repair. But as the tears in the tendon multiply, they cause pain from inflammation and weakening of the tendon.

Usually, pain from patellar tendinitis is on the front part of your knee, just below your kneecap.

Jumper's knee, also known as patellar tendonitis, is a condition characterized by inflammation of your patellar tendon.

To learn more about patellar, click here:

https://brainly.com/question/29610148

#SPJ4

What is the difference between a group team sport in an individual team sport give at least one example of each type of sport

Answers

A group team sport involves a group of players working together to achieve a common goal, while an individual team sport involves individual players working together to achieve a common goal.

An example of a group team sport is soccer, where a group of players work together to score goals and prevent their opponents from scoring.

An example of an individual team sport is tennis, where individual players work together as a team to win points and ultimately the match.

I HAVE CORONA WHAT SHOULD I DO?????? i have 1 minute to answer it

Answers

you should stay home for two weeks and quarantine with anyone who lives in the same house as you. Also contact people who you have been in close contact with and tell them to self isolate as well or go through the nhs
hope this helps and hope you get better soon

Answer: Stay home except to get medical care

Explanation: . Most people with Corna have mild illness and can recover at home without medical care. Do not leave your home, except to get medical care. Do not visit public areas.Take care of yourself. Get rest and stay hydrated.

I hope u feel better! Brainlist?plz

what is gum?
when is gum invented?

Answers

Answer:   Gum is a soft, cohesive substance designed to be chewed without being swallowed. Modern chewing gum is composed of gum base, sweeteners, softeners/plasticizers, flavors, colors, and, typically, a hard or powdered polyol coating. Its texture is reminiscent of rubber because of the physical-chemical properties of its polymer, plasticizer, and resin components, which contribute to its elastic-plastic, sticky, chewy characteristics.     Modern chewing gum was first developed in the 1860s when chicle was brought from Mexico by the former president, General Antonio Lopez de Santa Anna, to New York, where he gave it to Thomas Adams for use as a rubber substitute.

Rayan's family has always made it a priority to cook meals together at home every evening. They are able to afford a variety of fresh meats, fruits, and vegetables every week as they plan their meals for the family and shop for their groceries. How could this likely impact Rayan's relationship with food?

He will switch to pre-packaged and fast food to change his habits as he becomes an adult.
He will lack necessary nutrients from fruits and vegetables as he grows into adulthood.
He will carry the habit of cooking healthy meals at home into adulthood.
He will not enjoy fruits and vegetables as he gets older and will stop eating healthy foods.

Answers

Answer:

Your Answer Will Be C. He will carry the habit of cooking healthy meals at home into adulthood.

Explanation:

What is life and how does it work

Answers

A half life is the amount of time it takes for half of an isotope to decay in a given sample. The half life of carbon 14 (which is an isotope) is 5730 years. Carbon-14 is present in many fossils, hence scientists use this to figure out the age of fossils, this specific usage is called carbon dating.

What is life?

Life, as we know, Life exists only on planet earth. Life distinguishes itself from other physical entities through biological processes such as reproduction and metabolism. Today, life is abundant and able to thrive in almost every conceivable environment. So how would one define life?

Definition of Life.

Currently, there is no consensus on the definition of life. The most popular definitions build around the fact that life involves: homeostasis; is composed of cells; has a definite lifecycle; can grow; showcases metabolism; responds to stimuli; adapt to the environment, reproduce and evolve. These characteristics are now known as life processes.

Most definitions of life are descriptive. This is because life is technically a process rather than a substance. It becomes even more convoluted due to the lack of knowledge of the characteristics of organisms, if any, that may have developed in planets outside earth. Life can also be defined from a physics perspective where living organisms are considered as thermodynamic systems with an organised molecular structure that is capable of reproduction as well as evolution.

Femi hates going to the gym but knows exercise is important. She makes a plan to meet her exercise-loving friend at the gym.

What kind of support is this?


coach support

peer support

contemplation support

precontemplation support

Answers

That would be peer support
the answer would be peer support

What are the similarities tween epigenetic and sociocultural theories of infant emotions?

Answers

Answer:

Abstract

Comprehensive clinical studies show that adverse conditions in early life can severely impact the developing brain and increase vulnerability to mood disorders later in life. During early postnatal life the brain exhibits high plasticity which allows environmental signals to alter the trajectories of rapidly developing circuits. Adversity in early life is able to shape the experience-dependent maturation of stress-regulating pathways underlying emotional functions and endocrine responses to stress, such as the hypothalamo–pituitary–adrenal (HPA) system, leading to long-lasting altered stress responsivity during adulthood. To date, the study of gene–environment interactions in the human population has been dominated by epidemiology. However, recent research in the neuroscience field is now advancing clinical studies by addressing specifically the mechanisms by which gene–environment interactions can predispose individuals toward psychopathology.

Unlike genetic changes, epigenetic changes are reversible and do not change your DNA sequence, but they can change how your body reads a DNA sequence. Gene expression refers to how often or when proteins are created from the instructions within your genes.

What is mean by epigenetic?Epigenetics is the study of how your behaviors and environment can cause changes that affect the way your genes work. Unlike genetic changes, epigenetic changes are reversible and do not change your DNA sequence, but they can change how your body reads a DNA sequence.

Unlike genetic changes, epigenetic changes are reversible and do not change your DNA sequence, but they can change how your body reads a DNA sequence. Gene expression refers to how often or when proteins are created from the instructions within your genes.

To learn more about Epigenetics refer:https://brainly.com/question/14293014

#SPJ2

According to the graph, which gang-related activity is least reported in a large community?

graffiti
robbery
drug sales
aggravated assault

Answers

Answer:

According to the search results [1],[2],[3],and [10], the answer to the question "According to the graph, which gang-related activity is least reported in a large community?" is graffiti.

Explanation:

the answer is graffiti

What is the document that provides protection for the privacy of study participants in alcohol and drug abuse research studies is called?

Answers

Answer: The document that provides protection for the privacy of study participants in alcohol and drug abuse research studies is called a Certificate of Confidentiality.

Explanation: A Certificate of Confidentiality is a document issued by the National Institutes of Health (NIH) or other federal agencies that protects identifiable research information from forced or compelled disclosure by legal authorities or third parties. A Certificate of Confidentiality allows researchers and institutions to refuse to disclose the names or other identifying characteristics of research participants in any federal, state, or local civil, criminal, administrative, legislative, or other proceedings.

A Certificate of Confidentiality is intended to protect the privacy of research participants who are involved in sensitive or stigmatized research topics, such as alcohol and drug abuse, mental health, sexual behavior, genetic diseases, or criminal activities. By providing this protection, a Certificate of Confidentiality aims to encourage participation in research, enhance the validity and reliability of data, and facilitate ethical and responsible research conduct.

A Certificate of Confidentiality can be obtained by researchers who are conducting biomedical, behavioral, clinical, or other types of research that collect identifiable information that could have adverse consequences for participants if disclosed. The research can be funded by the federal government or by other sources. The researchers must apply for a Certificate of Confidentiality before or during the course of the research and must follow the requirements and procedures specified by the issuing agency.

A Certificate of Confidentiality does not eliminate the need for informed consent or compliance with other ethical and legal standards for research. It also does not prevent researchers from voluntarily disclosing information about participants with their consent or for certain purposes, such as reporting child abuse, preventing imminent harm, or complying with federal audits. A Certificate of Confidentiality also does not protect researchers from liability for negligence or misconduct.


Which intervention is essential for the nurse to perform on a patient who is experiencing hypotension as a complication of spinal anesthesia? Select all that apply. One, some, or all

responses may be correct. Monitor blood pressure.

Compare blood pressure to values obtained in the preoperative phase.

Notify the anesthesia provider if manifestations of shock are present.

Monitor for widening pulse pressure.

Notify the anesthesia provider if hypotension is accompanied by nauseavomitingand bradycardia.

Answers

The following actions must be made by the nurse as soon as a patient develops hypotension as a result of spinal anesthesia:

1. Monitor blood pressure.

This is crucial in order to track changes or variations in the patient's blood pressure levels.

2. Compare blood pressure to values obtained in the preoperative phase.

The nurse can determine if the patient's hypotension represents a substantial departure from baseline and necessitates care by comparing the patient's current blood pressure to the preoperative levels.

3. Notify the anesthesia provider if manifestations of shock are present.

It is critical to alert the anesthesia practitioner right away if the patient exhibits hypotension and indications of shock since this may necessitate rapid medical attention.

4. Notify the anesthesia provider if hypotension is accompanied by nausea, vomiting, and bradycardia.

If bradycardia, vomiting, and hypotension occur together, let the anesthetic provider know. These symptoms should be reported to the anesthesia physician for proper diagnosis and therapy if they coexist with hypotension, which can signify a more serious problem.

To know more about hypotension:

https://brainly.com/question/8027564

#SPJ1

Under ACA Section 1557, a health plan premium sold through a state exchange may, based on an individual’s age,

Answers

Answer:

Under ACA Section 1557, a health plan premium sold through a state exchange may charge higher premiums, based on an individual’s age.

Explanation:

According to ACA Section 1557, the value of premiums can be higher the older the age of an individual. This is because older individuals may have more health care needs covered by the health plan. This is very common in health plans sold through state exchanges.

Question 1. Define the term third-party payer and describe the role of the insurance company as the third party in the patient-provider relationship.

Answers

An organization that is liable for paying medical expenses on behalf of a person through insurance, an agreement, or a contract is referred to as a third-party payer. This entity is distinct from the person who received the relevant medical care or services and VA who rendered them.

What is third-party payer?

Third party payer is defined as any organization that offers health plans, medical services, or insurance through a contract or other agreement.

It can also be defined as any public or commercial organization that covers or insures beneficiaries' medical costs while they are patients.

Thus, an organization that is liable for paying medical expenses on behalf of a person through insurance, an agreement, or a contract is referred to as a third-party payer. This entity is distinct from the person who received the relevant medical care or services and VA who rendered them.

To learn more about third-party payer, refer to the link below:

https://brainly.com/question/28572293

#SPJ1

what does a population focus require in terms of planning consensus building and resources for implementation in the case of safety belts and in the case of heart attack prevention

Answers

Answer:

taco MONDAY!!!!!!!!

Explanation:

Fat-soluble vitamins include A, D, E, and

Answers

Answer: K

Explanation:

Answer:

K

Explanation:

Vitamins A, D, E, and K are called the fat-soluble vitamins, because they are soluble in organic solvents and are absorbed and transported in a manner similar to that of fats.

Jeremy Jeremy is 2 ½ years old. His mother states that she is having a difficult time with him. She says that he has frequent temper tantrums. The last one happened when she took him with her to the store. After a few minutes at the store, Jeremy asked for a new toy. When his mother told him she couldn't buy the new truck, Jeremy started to protest, cry, and kick his feet. Jeremy's mother states she was so embarrassed she "could have died." 1. What information can you give Jeremy's mother to help her understand the cause of temper tantrums? 2. How would you advise Jeremy's mother to handle Jeremy when he gets out of control? 3. At which stage of cognitive development is Jeremy? 4. How would you teach Jeremy right from wrong? A​

Answers

1. Temper tantrums are common at Jeremy's age as children struggle with communication and assertiveness. It is a normal part of development.

2. Remain calm, offer alternatives or distractions, establish clear boundaries, and ignore tantrums if safe to do so.

3. Jeremy is likely in the early stages of the preoperational stage of cognitive development.

4. Teach right from wrong through positive reinforcement, consistent discipline, setting clear expectations, and modeling appropriate behavior.

1. At this age, children are experiencing rapid development and are learning to assert their independence. They often lack the communication skills to express their wants and needs effectively, leading to frustration and tantrums. Explaining this to Jeremy's mother can help her understand that tantrums are a normal part of his development.

2. When Jeremy gets out of control, it is essential for his mother to remain calm and composed. Reacting with anger or frustration may escalate the situation further. Instead, she can try using distraction techniques or offering alternatives to redirect his attention. Setting clear and consistent boundaries is also important. Establishing rules and expectations in advance can help Jeremy understand what is acceptable behavior.

3. Based on the information provided, Jeremy is likely in the early stages of the preoperational stage of cognitive development, as described by Jean Piaget. This stage typically occurs between the ages of 2 and 7 years. During this stage, children exhibit egocentric thinking, limited understanding of abstract concepts, and are heavily influenced by their perceptions of the world.

4. Teaching Jeremy right from wrong involves using positive reinforcement and consistent discipline. Setting clear expectations and consequences can help him understand the boundaries of acceptable behavior. Providing explanations, using simple language, and modeling appropriate behavior are effective strategies for teaching right from wrong. Reinforcing positive behavior with praise and rewards encourages him to repeat those actions.

know more about independence here:

https://brainly.com/question/33609441

#SPJ8

When does a dancer take a step in hip hop basic step 1?

Answers

Answer:

the hop to dance step 2

Explanation:

hru and the rest are all the way in which you are not to have a chance for the future and how it will work be for me and I don't open for too anything time trouble think have will can a able in for west bathroom and I you know want you to me or what I

HELPPP

Chemical nature, it’s source, how it affects the human body, the dangers, signs and symptoms, statistics, and treatments for the drug GHB ( y-hydroxybutyrate, sodium oxygate)

Answers

The human body can naturally create gamma hydroxybutyrate (GHB), a substance that depresses the central nervous system.

Effects of GHB on the Human Body

Abuse of GHB is frequently treated using a multidisciplinary strategy that includes behavioral therapy, psychiatric counseling, and medical oversight. Detoxification, managing any underlying mental health conditions, resolving withdrawal symptoms, and avoiding recurrence are the key objectives of treatment. In cases of overdose, supportive treatment may be required, such as intravenous fluids and respiratory assistance.

Learn more on GHB here https://brainly.com/question/5985231

#SPJ1

What is the link between heredity and drug addiction?
O A. Substances cause people to have addicted genes.
B. Genes are not related to addiction.
C. Some people have genes that make it easier for them to become
addicted to drugs.
O D. Everyone has genes that make it easy to become addicted to
drugs.
SUBMIT

Answers

B no explanation it’s pretty obvious lol

What fraction of each meal should be fruits and vegetables?
1/3
1/4
2/3
1/2

Answers

Answer:

1/3

Explanation:

because If it's both fruits and vegetables then you only need room for protein and grain and dairy.

1/3 because it just is this is easy

what is the cytomegalovirus ? any herbal cures

Answers

Answer:

Cytomegalovirus (CMV) is a common virus belonging to the herpesvirus family. It can infect people of all ages and typically remains dormant in the body after initial infection. CMV infection may not cause symptoms in healthy individuals. However, it can lead to severe illness in people with weakened immune systems or newborns infected during pregnancy.

Currently, there are no herbal cures or specific antiviral medications available for CMV. In cases where CMV infection poses a significant health risk, healthcare professionals may prescribe antiviral medications to manage symptoms and reduce the severity of the infection. These medications inhibit the replication of the virus and may be used in certain medical situations.

Explanation:

V
(1 point)
15 of 15
V
!!!
Mateo is a medical student learning to take a blood pressure reading. His instructor
shows him how to position the cuff on the patient's arm. He squeezes the bulb to
inflate the cuff. Mateo uses the stethoscope to listen for silence as the brachial artery
is blocked. Then he slowly releases the pressure on the cuff. Mateo begins to hear a
'whooshing' sound as the blood begins to flow through the artery. He makes a note
of the pressure at this point. It is 120. When the whooshing' sound ends, Mateo
takes note that the pressure is now at 76. How should Mateo report these results to
his instructor?

Answers

Using two numbers, blood pressure is calculated: Systolic blood pressure is the first number, and it represents the pressure in your arteries when your heart beats.

Explain about the blood pressure?

Medical services in an emergency if you experience chest discomfort, breathlessness, or any other stroke-related symptoms and your blood pressure is 180/120 mm Hg or higher. Symptoms of a stroke can include speech difficulties, vision abnormalities, or tingling or numbness.

The pressure exerted by your blood on the artery walls is known as blood pressure. Blood is pumped into the arteries every time your heart beats. Whenever your heart beats and pumps blood, your blood pressure is at its greatest.

Blood vessels (arteries) that feed blood to the brain can suffer harm from blood pressure of 140/90 or greater. coronary disease. Heart disease is the leading cause of mortality among stroke survivors and the second biggest risk factor for stroke.

To learn more about blood pressure refer to:

https://brainly.com/question/25149738

#SPJ1

A large kick; a controlled beating movement of the leg

Answers

Answer:

Image result for A large kick; a controlled beating movement of the leg

In French, a grand battement means “large beating” or “big kick”. ... In less technical terms, a grand battement can be described as a movement in which the dancer extends one leg outward to the front, side or back of the body and then returns it back to the supporting leg.

I hope this helps

Explanation:

3. What does the acronym "ABC" stand for? Describe each of these three steps and how you
would perform them.

Answers

Answer:

Airway, Breathing, CPR

How to perform CPR you position hands on top of the other in the middle of the chest, push hard push fast ( follow the beat to staying alive )

Explanation:

always check the danger to you, any bystanders and then the injured or ill person.

Understanding the behavioral norms for each age and stage of development is important for interpreting behaviors and the correct application of guidance strategies.

Answers

I don’t know maybe I can get a hold of you

What nutrients are needed to make red blood cells

Answers

Foods rich in iron help you maintain healthy red blood cells. Vitamins are also needed to build healthy red blood cells. These include vitamins B-2, B-12, and B-3, found in foods such as eggs, whole grains, and bananas. Red meats , and organ meat are high in nutrition which will increase the amount of red blood cells in your body.

Foods rich in iron help you maintain healthy red blood cells. Vitamins are also needed to build healthy red blood cells. These include vitamins B-2, B-12, and B-3, found in foods such as eggs, whole grains, and bananas.

What are in nutrients?

Nutrients supply nourishment. Proteins, carbohydrates, fat, vitamins, minerals, fiber, and water, If someone do not contain the proper  nutrients in their diet, their risk of growing certain health conditions increases.

Thus, Red meats , and organ meat are high in nutrition which will increase the amount of red blood cells in your body.

To learn more about nutrients click here:

https://brainly.com/question/1268939

#SPJ2

Other Questions
5. They silently inhalethe clover-scented gale,And the vapors that ariseFrom the well-watered and smoking soilWhat type of poetry thing is this? Read the situation and complete the sentences. Use the verbs in brackets.1 Tom started reading a book two hours ago. He is still reading it and now he is on page 53.He has been reading for two hours. (read)He has read 53 pages so far. (read)2 Rachel is from Australia. She is travelling round Europe at the moment. She began her trip threemonths ago.Shefor three months. (travel)six countries so far. (visit)3 Patrick is a tennis player. He began playing tennis when he was ten years old. This year he wonthe national championship again - for the fourth time.the national championship four times. (win)since he was ten. (play)4 When they left college, Lisa and Sue started making films together. They still make films.Theyfilms since they left college. (make)five films since they left college. (make) answer it answer it answer it What are the coordinates of the x-intercept in the graph below? an amine will react as a(n) with electrophilic carbon atoms. There is so much sadness, misery, and unfairness in the history of minority groups that evidence of progress sometimes goes unnoticed.a. true b. false the study of the pathogen responsible for which disease served as the foundation for the germ theory of disease? Lewis Co. reports the following results for May. Prepare a flexible budget report showing variances between budgeted and actual results. Budgeted Actual Sales $ 300 per unit $ 435,000 Variable expenses $ 120 per unit $ 172,000 Fixed expenses (total) $ 125,000 $ 122,000 Units produced and sold 1,200 1,400 List variable and fixed expenses separately. (Indicate the effect of each variance by selecting for favorable, unfavorable, and no variance) _____________ wrote and designed the book Pioneers of Spanish Graphic Design, the leading publication on this subject. What is the measure of ZRVE?6078merR Use the image to answer the question.Which of the arrows shown above represent the process of cellular respiration? (1 point)O A, D, and EO C onlyO D and EO B only Certain clouds form when temperatures fall below -86 C. What is this temperature in degrees Fahrenheit? A. social isolation can lead people to act immorally. b. beauty and truth appear in unexpected places. c. getting what you want may not make you happy. match the themes on the left with these questions: which themes does mr. shiftlet help reveal? The English Bill of Rights protected citizens from ______________. *5 pointstrial by jurystrict lawstaxescruel and unusual punishment You should deliver chest compressions to an unresponsive adult patient in cardiac arrest by:______. Is the point (2,4) a solution of the equation y= 17x- 12? The special interest effect refers to the bias of government in favor of policies that. What is one way Buddhism was able to spread beyond India?Buddhist leaders used the military to conquer other countries.The Buddha traveled to countries outside of India to preach.Traders and Buddhist missionaries shared the religion as they traveled.The Buddha helped Buddhist monks and nuns build temples to spread the religion. question sherry buckner, cfa, manages equity accounts for government entities whose portfolios are classified as being conservative and risk averse. since the objective of her clients is to maximize returns with the lowest possible risk, buckner considers adding to their holdings a new, thinly traded, leveraged derivative product that she believes has the potential for high returns. to make her investment decision, buckner relies upon comprehensive research from an investment bank with a solid reputation for top quality research. after her review of that research, buckner positions her accounts so each has a 10% allocation to the derivative product. did buckner most likely violate any cfa institute standards of professional conduct by purchasing the derivative product for her clients? What role did Damascus, Rome, and Constantinople play in the crusades?