Essential Patient Positioning Guide for Healthcare Professionals: Tips and Techniques

Patient positioning is a fundamental aspect of nursing care that plays a crucial role in the comfort, safety, and overall health of patients. It refers to how a patient is placed in bed or during a medical procedure to achieve optimal physiological benefits. Proper positioning can help manage medical conditions, prevent complications, and improve recovery outcomes. As a prospective nursing student preparing for the TEAS exam, having a clear understanding of patient positioning will be instrumental in your future clinical practice.

The primary goal of patient positioning is to ensure the patient’s comfort while maintaining their safety and well-being. Correct positioning can also help promote optimal organ function, prevent complications like pressure ulcers or respiratory distress, and facilitate various medical procedures. As a nurse, it is essential to assess the patient’s needs and select the appropriate position based on their medical condition, surgery, or treatment plan.

There are several different patient positions used in healthcare settings, each designed for specific purposes. While some positions are used to improve breathing or circulation, others are tailored to assist in specific procedures like surgeries or examinations. The ability to properly position a patient is not just about comfort; it can directly impact the success of a treatment or procedure.

In this guide, we will cover the most common patient positions used in nursing care. Each position has its specific uses, benefits, and considerations for the healthcare provider. Understanding when and how to use these positions will help you provide better care for your patients, especially in emergencies, during recovery, or for routine exams.

Fowler’s Position

Fowler’s position involves elevating the patient’s head and upper body between 40° and 90°. This position is commonly used for patients who require assistance with breathing, have cardiac conditions, or are receiving tube feedings. By raising the head of the bed, Fowler’s position allows for better lung expansion, making it easier for patients with respiratory issues to breathe. It can also reduce the strain on the heart, improving blood circulation in patients with heart failure or other cardiac concerns.

Fowler’s position can be adjusted to different degrees of elevation depending on the patient’s needs. A low Fowler’s position (around 30°) may be used for comfort or to promote digestion, while a high Fowler’s position (closer to 90°) is often used for patients with severe respiratory distress or difficulty breathing.

The benefits of Fowler’s position are most noticeable in patients with conditions such as chronic obstructive pulmonary disease (COPD), pneumonia, or asthma. It can also be helpful for patients who have undergone surgery and are recovering in the hospital, as it allows for easier breathing and better oxygenation.

In addition to improving respiration, Fowler’s position is often used for patients with nasogastric (NG) tubes. The elevation helps prevent the risk of aspiration by ensuring that gastric contents do not flow back into the airways. It also makes it easier to administer tube feedings and provides better drainage of gastric fluids.

Fowler’s position is also used for other clinical scenarios, such as during post-operative care following abdominal surgeries, for patients with neurological conditions, and for individuals receiving respiratory treatments. The flexibility of Fowler’s position makes it one of the most widely used and versatile patient positions in clinical practice.

Lateral Position

The lateral position, where the patient lies on either their left or right side, is commonly used for patients who require long-term positioning or post-operative care. In this position, the patient’s body weight is distributed more evenly across the side, reducing the pressure on vulnerable areas of the body like the sacrum and heels. This is particularly important for patients who are bedridden or have limited mobility, as it helps to prevent pressure ulcers, also known as bedsores.

Pressure ulcers are a common concern for patients who are immobile for extended periods, particularly those who are elderly, frail, or have compromised skin integrity. The lateral position helps redistribute pressure, allowing for better blood circulation to tissues that might otherwise be subjected to constant pressure. By periodically turning the patient into different lateral positions (left and right), healthcare providers can reduce the risk of developing these painful and potentially dangerous sores.

In addition to pressure ulcer prevention, lateral positioning is used for patients who have undergone certain surgeries, such as hip or spinal surgery. After surgery, it is essential to avoid placing pressure on the surgical site to promote healing and reduce the risk of complications. The lateral position is also used for patients who have lung problems, particularly unilateral lung disease or aspiration risk. By placing the patient on their side, healthcare providers can improve drainage from the lungs and help prevent complications such as pneumonia or atelectasis (lung collapse).

For patients who are recovering from surgery or other medical conditions that require extended bed rest, the lateral position can help maintain comfort and reduce the risk of complications such as deep vein thrombosis (DVT). By changing the patient’s position frequently, nurses can help improve circulation and prevent the formation of blood clots.

The lateral position can also be modified for specific procedures, such as during the administration of enemas or when performing certain types of examinations. By flexing the upper leg and arm, the lateral position can facilitate access to the rectal or perineal area, making it easier for healthcare providers to conduct assessments or treatments in this region.

Lithotomy Position

The lithotomy position involves the patient lying flat on their back with their legs elevated and placed in stirrups, often with the knees bent and the thighs separated. This position is frequently used during gynecological procedures, childbirth, and certain abdominal surgeries. The lithotomy position allows for optimal access to the pelvic area, providing healthcare providers with a clear view of the reproductive organs, the urinary tract, and the perineal region.

In gynecology, the lithotomy position is commonly used during routine examinations, such as Pap smears, pelvic exams, and colposcopies. It is also used during surgical procedures like hysterectomies, cesarean sections, and the removal of ovarian cysts. The position offers a wide view of the pelvic organs, making it easier for surgeons and doctors to perform necessary procedures.

The lithotomy position is especially crucial during childbirth. While not all deliveries require this position, it is commonly used for vaginal deliveries in modern medical practice. The elevated position allows healthcare providers to monitor the progress of labor more easily and provides a clear view of the birth canal during delivery. It also allows for better control and assistance during the delivery of the baby, helping ensure a safe and efficient birth process.

However, the lithotomy position is not without its risks. Prolonged use of this position can lead to discomfort for the patient, as the legs are placed in an elevated position for extended periods. Nurses must carefully monitor the patient’s comfort and ensure that the stirrups do not cause nerve compression or circulation problems in the lower extremities. Additionally, the lithotomy position may cause increased pressure on the abdomen, which can be problematic for patients with certain medical conditions, such as those with obesity or respiratory issues.

Additional Patient Positions and Their Uses

In the previous section, we explored some of the most commonly used patient positions, such as Fowler’s, lateral, and lithotomy positions. Now, we will delve into other essential patient positions that are integral to providing optimal care and comfort in various medical and clinical scenarios. Understanding these positions will help you provide better care for your patients, especially in specialized treatments and recovery processes.

Prone Position

The prone position refers to a patient lying flat on their stomach with the head turned to one side. This position may seem unusual, butit  has specific uses, particularly in certain surgeries and for post-operative recovery. The prone position is commonly used for patients undergoing procedures involving the back, spine, or neck, as well as those recovering from oral or neck surgery.

One of the primary benefits of the prone position is its ability to help with drainage after surgery. In cases of neck or oral surgery, for example, the prone position allows fluids, such as blood or saliva, to drain away from the airway. This reduces the risk of aspiration, which could lead to choking or respiratory complications. The prone position is often employed after procedures like tonsillectomies, adenoidectomies, or certain facial surgeries.

For patients recovering from spine surgery or needing to increase joint flexibility, the prone position can also be beneficial. It helps to stretch and flex the knee and hip joints, which can be useful for patients undergoing physical therapy or for those recovering from musculoskeletal injuries. This position is often used to promote circulation and prevent stiffness or muscle atrophy in these patients.

Additionally, prone positioning is helpful for patients with severe respiratory conditions, such as acute respiratory distress syndrome (ARDS) or pneumonia. By placing the patient on their stomach, the position helps to open up the back of the lungs, improving oxygenation and respiratory function. This is especially useful in patients who are unable to maintain sufficient oxygen levels while lying on their backs.

The prone position does require careful monitoring by healthcare providers, as prolonged periods in this position can cause pressure on the face, chest, and joints. Nurses must ensure that the patient is comfortable, properly supported, and closely observed to prevent complications.

Reverse Trendelenburg Position

The reverse Trendelenburg position involves elevating the head of the bed while lowering the feet, creating a slanted position where the head is higher than the feet. This positioning has several applications in both surgical and non-surgical scenarios.

One of the most common uses of the reverse Trendelenburg position is in the treatment of obesity, particularly during surgery. By elevating the head, this position helps improve blood flow and circulation, which can be especially important for patients with excess weight. This positioning also reduces the pressure on the diaphragm, making it easier for the patient to breathe. In some cases, reverse Trendelenburg is used in bariatric surgery to enhance patient comfort and ease of access during the procedure.

The reverse Trendelenburg position is also effective in preventing pulmonary aspiration. This position can help reduce the risk of stomach contents entering the lungs, which is a concern during certain medical treatments or procedures. It may be used during surgical procedures where the patient is under anesthesia and at risk of regurgitation. Elevating the head of the bed and lowering the feet can help prevent aspiration by allowing gastric contents to remain in the stomach, reducing the chance of them being inhaled into the lungs.

Another clinical application for the reverse Trendelenburg position is in the management of venous air embolism. In this case, the position helps to prevent air bubbles from traveling into vital organs, particularly the brain and heart. This is crucial in emergencies where a venous air embolism is suspected or confirmed. Elevating the head and lowering the feet can help direct air bubbles away from critical areas and prevent life-threatening complications.

This position is also useful for patients undergoing surgeries that require access to the abdominal or pelvic regions. The reverse Trendelenburg position facilitates better visualization of these areas, allowing for improved surgical outcomes.

Sim’s Position

Sim’s position is a modified lateral position where the patient lies on their side with one leg flexed and drawn towards the chest, and the upper arm flexed at the elbow. This position is often used for patients undergoing procedures or treatments in the rectal or perineal area, such as administering enemas or conducting perineal examinations.

The Sim’s position provides optimal access to the rectum and pelvic region, making it easier for healthcare providers to perform procedures like rectal exams or insert an enema. It is a comfortable position for many patients, particularly during certain stages of pregnancy when a more natural lateral position is required. It is also commonly used in the treatment of patients with constipation, as it facilitates the administration of medications, such as suppositories or enemas, by providing better access to the rectum.

In addition to its use in administering treatments, Sim’s position can be beneficial in various other clinical settings. Pregnant women, for example, may find this position more comfortable during certain medical examinations or when undergoing diagnostic procedures such as ultrasounds. For patients recovering from surgery, the Sim’s position can provide relief from pressure points, reducing the risk of developing pressure ulcers or sores. The position is also commonly used during certain types of diagnostic imaging procedures, where clear access to the lower body is needed.

Supine Position

The supine position involves the patient lying flat on their back with their arms extended by their sides. This position is one of the most common and widely used positions in healthcare. It is frequently used for surgeries, examinations, and diagnostic procedures, particularly those involving the abdominal, facial, or extremity regions.

Supine positioning is often considered the most neutral and comfortable position for a patient to rest in, particularly when preparing for surgery. Most surgical procedures, including abdominal surgeries, cesarean sections, and extremity surgeries, are performed with the patient in the supine position. It allows for easy access to the front of the body and ensures that the patient’s airway is unobstructed, which is crucial during anesthesia administration.

This position is also used for many diagnostic tests, such as X-rays, CT scans, and ultrasounds. The supine position allows healthcare providers to accurately assess and examine various organs and body systems, including the heart, lungs, and abdominal organs.

Additionally, the supine position is commonly employed in post-operative recovery. After surgery, patients are often placed in the supine position to ensure that they are comfortable and their airways remain open. In some cases, pillows or supports are used to elevate the patient’s head or legs to help with breathing or circulation.

While the supine position is widely used, it is important for nurses and healthcare providers to monitor the patient’s comfort and prevent complications such as pressure ulcers or back discomfort. Regular repositioning may be necessary to prevent pressure from building up on vulnerable areas such as the heels, sacrum, or elbows.

Additional Patient Positions and Their Applications

In the previous sections, we covered some of the most commonly used patient positions and their clinical applications. In this part of the guide, we will explore more specialized positions that healthcare professionals use in particular medical situations. Understanding these positions is key to providing comprehensive and effective patient care. Each position plays a unique role in assisting with comfort, safety, and optimal outcomes during various treatments and medical procedures.

Trendelenburg Position

The Trendelenburg position involves lowering the head of the bed while elevating the feet, essentially positioning the patient in an “upside-down” manner. This position was once a standard treatment for hypotension (low blood pressure) and shock, as it was believed to help increase venous return to the heart, thereby improving circulation. Although its use in treating hypotension has fallen out of favor in modern medicine, the Trendelenburg position still has applications in specific clinical scenarios, particularly in surgeries and certain diagnostic procedures.

One of the main uses of the Trendelenburg position is in gynecological and abdominal surgeries. By positioning the patient with their head lower than their feet, surgeons gain better access to the pelvic and abdominal regions. The position helps displace abdominal organs upward, which can provide more room for the surgeon to operate on the pelvic organs, such as the uterus, ovaries, and bladder. The Trendelenburg position is commonly used in procedures like laparotomies, hysterectomies, and surgeries for abdominal hernias.

In addition to surgery, the Trendelenburg position is used for certain diagnostic procedures, such as the placement of central venous lines or in situations where better access to the veins is required. By positioning the patient with their head lower than their feet, gravity can help make the veins in the neck and chest more prominent, making it easier for healthcare providers to insert a central line or administer intravenous medication.

While the Trendelenburg position can be useful in certain clinical situations, it is important to use it with caution. The position can cause increased pressure on the diaphragm, which may hinder breathing, and it can also lead to complications in patients with certain medical conditions, such as increased intracranial pressure or severe cardiovascular problems.

Modified Trendelenburg Position

A variation of the Trendelenburg position is the modified Trendelenburg position. This involves elevating the legs while keeping the head flat or only slightly elevated. The modified Trendelenburg position is primarily used in cases of hypotension or shock, and its goal is to improve circulation to vital organs.

When a patient is in the modified Trendelenburg position, the elevation of the legs promotes venous return to the heart. This increased blood flow can help raise the patient’s blood pressure, improving perfusion to vital organs such as the brain and kidneys. This position is often used in emergency or critical care situations when a patient is experiencing a drop in blood pressure or is at risk for shock. It is generally considered safer than the traditional Trendelenburg position, as it does not cause the same degree of respiratory compromise or increased pressure on the diaphragm.

Healthcare providers often use the modified Trendelenburg position as part of the initial management of hypotension in trauma patients, patients undergoing surgery, or those experiencing sepsis. This position can help stabilize the patient until more definitive treatment can be provided, such as the administration of intravenous fluids, medications, or blood products.

Knee-Chest Position

The knee-chest position is a variation of the prone position where the patient is placed on their knees with their chest on the bed, and their head either resting on a pillow or the bed. The knees are typically positioned close together while the chest is held close to the surface of the bed. This position is commonly used in specific diagnostic or therapeutic situations and has some applications in obstetrics and gynecology.

The primary use of the knee-chest position is to assist in the management of conditions like rectal or vaginal prolapse. By positioning the patient with their chest lowered and their pelvis elevated, gravity helps to reduce the prolapsed organs and reposition them more comfortably. The knee-chest position is also useful in some cases of rectal or vaginal examinations, where the clinician requires access to the pelvic region.

In obstetrics, the knee-chest position is occasionally used during labor if the baby’s position is causing difficulty or if there is a risk of cord prolapse. The position helps reduce pressure on the umbilical cord, potentially improving blood flow to the fetus.

Another application for the knee-chest position is in the treatment of certain respiratory conditions. It can be used to help improve lung function by promoting better drainage of mucus and secretions from the lungs. This is particularly useful in patients with conditions such as cystic fibrosis or other chronic respiratory diseases that involve excessive mucus production.

Sitting Position

The sitting position, where the patient is seated upright in a chair or bed, is commonly used for patients with breathing difficulties or those who require a more comfortable position for certain treatments or diagnostic procedures. It is also used for post-operative recovery, particularly for patients who have undergone abdominal or thoracic surgery.

The sitting position allows for better lung expansion, making it easier for patients with respiratory conditions, such as asthma, pneumonia, or chronic obstructive pulmonary disease (COPD), to breathe. It also helps to relieve pressure on the diaphragm, which can improve breathing by allowing the lungs to expand more fully. For patients who are in recovery from major surgeries, such as those involving the chest or abdomen, sitting upright can also help improve circulation, reduce the risk of blood clots, and alleviate pressure on the surgical site.

The sitting position is also often used in the management of conditions like nausea and vomiting, particularly in patients recovering from anesthesia or chemotherapy. It helps reduce the risk of aspiration and can make it easier for the patient to maintain a stable blood pressure and fluid balance.

For elderly or immobile patients, the sitting position may be used to encourage social interaction, increase engagement in therapy, and promote a sense of well-being. It can also be beneficial for patients who are being monitored for their vital signs, as the seated position allows for easier assessment of the patient’s breathing, circulation, and overall health.

Dorsal Recumbent Position

The dorsal recumbent position is similar to the supine position but with the knees bent and the feet flat on the bed. The patient is lying on their back, with their arms by their sides or across their chest. This position is commonly used in medical examinations and procedures, especially those involving the abdomen, chest, or pelvic region.

The dorsal recumbent position allows for better access to the abdominal and pelvic regions, making it ideal for procedures like abdominal palpation, pelvic examinations, or ultrasounds. It is also used for certain types of diagnostic imaging and for patients who need to be positioned comfortably while maintaining a relaxed posture. The position helps reduce the strain on the lower back and abdomen, which can be helpful for patients experiencing discomfort or pain.

In some cases, the dorsal recumbent position is used in post-operative care for patients recovering from surgeries in the abdominal or pelvic area. The position helps ensure proper blood circulation and can reduce the risk of pressure ulcers in patients who are immobile or bedridden for long periods.

Mastering the various patient positions and understanding their appropriate applications is a vital part of nursing practice. Whether you are caring for a patient recovering from surgery, managing a chronic condition, or assisting in diagnostic procedures, knowing how to properly position a patient can make a significant difference in their comfort, safety, and overall health outcomes. The Trendelenburg, modified Trendelenburg, knee-chest, sitting, and dorsal recumbent positions are just a few of the specialized techniques used in healthcare settings to address specific clinical needs.

As you continue your journey toward becoming a nurse, it is important to familiarize yourself with all of these positions and understand how they can be used to improve patient care. By mastering patient positioning, you will be better equipped to handle a wide range of medical situations and ensure that your patients receive the best possible care.

Mastering Patient Positioning for Effective Nursing Care

In this final section of the guide, we will summarize the key points about patient positioning and discuss practical ways to incorporate these techniques into your nursing practice. Mastery of patient positioning is not only vital for optimizing patient comfort and safety but also for ensuring the effectiveness of medical treatments and procedures. As a future nurse, understanding and applying patient positioning techniques will greatly enhance the quality of care you provide to your patients.

Summary of Key Patient Positions

Throughout this guide, we have explored a wide range of patient positions and their specific applications in clinical settings. Here is a brief recap of the most commonly used and specialized positions:

Fowler’s Position: Used to improve respiratory function, alleviate cardiac stress, and prevent aspiration in patients with respiratory conditions or those who require nasogastric tube feeding.

Lateral Position: Primarily used for preventing pressure ulcers, supporting post-operative recovery, and improving lung function, especially in patients with unilateral lung disease or aspiration risk.

Lithotomy Position: Commonly used for gynecological exams, surgeries, and childbirth, offering optimal access to the pelvic area.

Prone Position: Helps with drainage after neck, oral, or spine surgeries and promotes lung expansion in patients with severe respiratory distress.

Reverse Trendelenburg Position: Often used to manage obesity during surgery, prevent pulmonary aspiration, and treat venous air embolism by improving blood circulation and preventing air bubbles from reaching vital organs.

Sim’s Position: Ideal for administering enemas, performing perineal exams, and providing comfort for pregnant patients.

Supine Position: The most common position for surgeries, examinations, and post-operative recovery, offering a neutral and accessible position for most clinical procedures.

Trendelenburg Position: Used primarily in abdominal or pelvic surgeries, as well as to assist in central venous line insertion or when better access to veins is needed. However, it must be used with caution due to respiratory concerns.

Modified Trendelenburg Position: Focuses on elevating the legs to improve venous return and is often used to treat hypotension or shock in emergency situations.

Knee-Chest Position: Applied in cases of rectal or vaginal prolapse, certain obstetric emergencies, or respiratory conditions to promote drainage and reduce organ pressure.

Sitting Position: Used to aid breathing in patients with respiratory difficulties, help post-operative recovery, and promote patient engagement and comfort.

Dorsal Recumbent Position: Frequently used for abdominal and pelvic exams or procedures, providing a relaxed and accessible posture for patients.

Practical Application of Patient Positioning in Nursing

While understanding the theoretical aspects of patient positioning is important, applying these techniques in a clinical setting is equally crucial. As a nurse, your ability to assess the patient’s condition and select the appropriate position can significantly influence the patient’s comfort, safety, and recovery. Below are some practical steps to ensure effective positioning:

Assess the Patient’s Needs: Before selecting a position, it is important to evaluate the patient’s condition, level of mobility, and specific medical requirements. For example, a patient with severe respiratory distress may benefit from Fowler’s position, while a patient recovering from abdominal surgery might be best positioned in the supine position.

Consider the Procedure: Certain medical procedures require specific patient positions for optimal access or visibility. Be sure to adjust the patient’s position according to the procedure being performed. For instance, the lithotomy position is ideal for gynecological procedures, while the Trendelenburg position may be needed for abdominal surgeries.

Monitor Comfort and Safety: Patient comfort and safety are paramount. Ensure that the patient is properly supported, especially when using positions that involve elevation, such as the Fowler’s or Trendelenburg positions. Use pillows or cushions to support pressure points, particularly in patients who are immobile or recovering from surgery.

Prevent Pressure Ulcers: Long-term positioning can lead to pressure ulcers, especially for patients who are immobile or bedridden. Be sure to regularly reposition patients in lateral or Sims’ positions to alleviate pressure on vulnerable areas like the sacrum, heels, and elbows. Frequent repositioning is a key strategy in preventing pressure ulcers.

Promote Proper Alignment: When positioning a patient, it is important to maintain proper body alignment to prevent strain on muscles, joints, and bones. For example, when placing a patient in the lateral or Sims’ position, make sure the head, neck, and spine are aligned, and avoid excessive bending at the hips or knees. This will help reduce discomfort and prevent musculoskeletal injuries.

Engage the Patient in the Process: Whenever possible, involve the patient in the positioning process. For example, if the patient is alert and able to move, ask them to assist in getting into the desired position. This can help ensure their comfort and dignity while promoting a sense of control over their care.

Ensure Accessibility for Care: Patient positioning should also facilitate easy access for healthcare providers to perform their tasks, such as administering medication, taking vital signs, or conducting diagnostic tests. Make sure that the patient’s position allows the healthcare team to effectively carry out their duties without compromising patient comfort or safety.

Be Aware of Contraindications: Some positions may not be suitable for certain patients, particularly those with specific medical conditions. For example, the Trendelenburg position is not recommended for patients with head injuries, increased intracranial pressure, or cardiovascular instability. Always consider the patient’s medical history and consult with the healthcare team if you have concerns about the appropriateness of a particular position.

Key Benefits of Proper Patient Positioning

The benefits of correct patient positioning go beyond comfort. Proper positioning can directly impact patient outcomes and the success of treatments and procedures. Some of the key benefits include:

  1. Improved Respiratory Function: Positions like Fowler’s or the sitting position can help patients with breathing difficulties by improving lung expansion and reducing pressure on the diaphragm. This is particularly important for patients with conditions like COPD, asthma, or pneumonia.
  2. Enhanced Circulation: Certain positions, such as the reverse Trendelenburg or modified Trendelenburg, can improve venous return, thereby enhancing circulation and preventing complications like deep vein thrombosis (DVT) and low blood pressure.
  3. Pressure Ulcer Prevention: Repositioning patients regularly in lateral, Sim’s, or supine positions helps to prevent the development of pressure ulcers, especially for bedridden patients or those with limited mobility.
  4. Facilitated Medical Procedures: Specific positions like lithotomy or Trendelenburg facilitate access to targeted areas of the body, allowing healthcare providers to perform surgeries or procedures with greater ease and precision.
  5. Post-Operative Recovery: Proper positioning after surgery can enhance comfort, reduce pain, and promote faster recovery by improving circulation, reducing pressure on surgical sites, and preventing complications like pneumonia or blood clots.

Conclusion: Positioning for Optimal Patient Care

As a future nurse, mastering patient positioning is an essential skill that will be crucial to your practice. The correct use of positioning techniques can have a significant impact on patient comfort, safety, and the success of medical treatments and procedures. Whether you are caring for a patient in recovery, assisting with diagnostic tests, or providing post-operative care, your ability to assess and apply the right position will enhance your ability to provide high-quality care.

By understanding the various patient positions, their clinical applications, and how to implement them in practice, you will be well-equipped to handle a range of medical scenarios. As you continue on your nursing journey, be sure to keep these concepts in mind, practice them regularly, and always advocate for your patients’ well-being and comfort. With a solid understanding of patient positioning, you will be able to contribute to better health outcomes and provide compassionate, effective care to those in need. Good luck as you prepare for your TEAS exam and embark on your nursing career!

 

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