1 Emergency Care THIRTEENTH EDITION CHAPTER 24 Hematologic and Renal Emergencies
2 Multimedia Directory Slide 15 Slide 40 Sickle Cell Anemia Video Information About Renal Failure Video
3 Topics The Hematologic System The Renal System
4 The Hematologic System
5 The Hematologic System Blood Represents its own organ system Has specific functions Control of bleeding by clotting Delivery of oxygen to cells Removal of carbon dioxide from cells Removal and delivery of other waste products to organs that filtrate and remove them continued on next slide
6 The Hematologic System Blood Made up of solid components Red blood cells White blood cells Platelets Suspended in plasma Medications can affect some components of blood.
7 Blood Clotting Aggregation of platelets is body's most rapid and initial response to stop bleeding. Clotting factors are a group of proteins produced in liver and released into the bloodstream. Once activated, clotting factors form clots through clotting cascades.
8 Coagulopathies Abnormal clotting of blood Can occur when body forms clots too readily or patient clots too slowly Certain diseases make patients prone to poor clotting: Advanced liver disease Hemophilia von Willebrand disease
9 Identifying Patients with Coagulopathies Certain medical conditions, medications in which the normal ability to form clots can worsen patient's disease Patients with prescribed "blood thinners" Patients more prone to have lifethreatening bleeding when injured than patients not on these medications
10 Anemia Lack of normal amount of red blood cells Acute anemia Sudden blood loss Chronic anemia Excessive menstrual periods Slow gastrointestinal bleeding Diseases affecting bone marrow
11 Sickle Cell Anemia Genetic disease affecting RBCs More prevalent in certain ethnicities African Americans Indian or Middle Eastern descent Defective shape resembles a sickle Cells have a short life span leading to anemia continued on next slide
13 Sickle Cell Anemia One in twelve African Americans has the sickle cell trait. Sickle cell trait doesn't always lead to complications. Possible to lead a normal life with sickle cell trait
14 Patient Care Administer supplemental oxygen. Monitor for inadequate respiration. Monitor for signs of hypoperfusion. Transport to stroke center if stroke is suspected.
15 Sickle Cell Anemia Video Click on the screenshot to view a video on the topic of sickle cell anemia. Back to Directory
16 The Renal System
17 The Renal System Components Two kidneys Two ureters One urethra Responsible for filtering blood and removing waste Maintains fluid balance Maintains acid/base balance
18 Diseases of the Renal System Affect many different portions Range from minor to life-threatening
19 Urinary Tract Infections Most common disease that afflicts renal and urinary system Caused by bacteria Usually limited to the bladder Cause pain and frequent urination If left untreated, can result in pyelonephritis UTI ascends up ureter into kidney.
20 Kidney Stones Usually made of calcium and formed within the kidney When in the kidney, they cause no symptoms. When they become dislodged, can cause unilateral flank pain that radiates to the groin area. Patients may report nausea and vomiting.
21 Patients with Urinary Catheters As a result of: Renal obstruction of bladder outflow Neurological disorder Use urinary catheters to drain urine Commonly inserted in urethra May be placed through skin Complications of UTI and local trauma at site of catheter insertion
22 Renal Failure Occurs when kidneys lose ability to adequately filter and remove toxins Acute failure typically results from shock or toxic ingestion. Chronic failure may be inherited or secondary to damage from uncontrolled diabetes or hypertension. continued on next slide
24 Renal Failure More than 400,000 Americans on dialysis who are treated in dialysis centers undergo three treatments a week, each lasting three to four hours. Only 8% treat themselves at home. ESRD patients often rely on EMS for transport to and from dialysis.
25 Hemodialysis Patient connected to a dialysis machine that pumps blood through specialized membranes Treatments last several hours, multiple times a week.
26 Hemodialysis How hemodialysis works. Adapted from Treatment Methods for Kidney Failure, National Institute of Diabetes and Digestive and Kidney Diseases; U.S. Centers for Disease Control and Prevention.
27 Hemodialysis Two types of access to blood circulation Two-port catheter A-V fistula Characteristic thrill when palpated
28 Hemodialysis A two-port catheter for hemodialysis inserted into a major vein of the torso. Edward T. Dickinson, MD
29 Hemodialysis A fistula surgically connects an artery and a vein in an extremity. Edward T. Dickinson, MD
30 Peritoneal Dialysis Uses peritoneal cavity's large surface area Special fluid infused into abdominal cavity and left for several hours to absorb waste and excess fluid Fluid is removed and discarded. continued on next slide
31 Peritoneal Dialysis Continuous ambulatory peritoneal dialysis (CAPD) Gravity exchange process repeated several times a day Continuous cycler-assisted peritoneal dialysis (CCPD) Machine used to fill and empty abdominal cavity while person sleeps
32 Peritoneal Dialysis Peritoneal dialysis catheter. Edward T. Dickinson, MD
33 Medical Emergencies in ESRD Two broad groups Loss of normal kidney function Complication of dialysis treatments Most dialysis patients have underlying medical factors. Diabetes Hypertension
34 Complications of ESRD Usually relate to patient missing dialysis Present with signs and symptoms similar to congestive heart failure Shortness of breath Edema Electrolyte disturbances
35 Patient Care For the ESRD patient who has missed dialysis Assess ABCs. Obtain vital signs and be aware of fistulas. Administer oxygen. Monitor vital signs closely and have AED ready. Transport to facility capable of dialysis.
36 Complications of Dialysis Bleeding from A-V fistula site Clotting and loss of function of the A-V fistula Bacterial infection of blood due to contamination at A-V fistula or dialysis catheter site Peritonitis
37 Patient Care ESRD patient with complications of dialysis Assess ABCs. Control bleeding. Use direct pressure, elevation, and hemostatic dressings as needed. If bleeding cannot be controlled by other means, a tourniquet should be applied. Administer oxygen. continued on next slide
38 Patient Care ESRD patient with complications of dialysis Treat for shock. Keep patient supine and warm. If peritonitis is suspected, transport dialysis fluid for confirmation.
39 Kidney Transplant Patients Kidneys are the most commonly transplanted organs. Approximately 16,000 transplants per year Patients spend their lives on special class of drugs. Help prevent organ rejection Increased susceptibility to infections
40 Information About Renal Failure Video Click on the screenshot to view a video on the topic of renal failure. Back to Directory
41 Chapter Review
42 Chapter Review Blood delivers oxygen to the cells, removes carbon dioxide from the cells, and controls bleeding by clotting. Blood consists of red cells, white cells, and plasma. Anemia is lack of red blood cells in circulation. continued on next slide
43 Chapter Review Sickle cell anemia is an inherited disease in which a defect in the hemoglobin results in sickle shape to red blood cells. This misshaping inhibits movement of red blood cells through capillaries, causing "sludging" and blockages in smaller blood vessels. continued on next slide
44 Chapter Review The renal system is comprised of the kidneys, the ureters, the bladder, and the urethra. The kidneys perform vital filtering of the blood to remove waste products. They also help maintain water balance within the body. continued on next slide
45 Chapter Review Problems with the renal system include infection, kidney stones, and renal failure. Renal failure is a condition in which the kidneys are unable to filter waste and provide a balance of fluids and electrolytes in the body. continued on next slide
46 Chapter Review Dialysis removes excess fluid and electrolytes from the body by filtration. Dialysis may be performed in either of two ways: hemodialysis or peritoneal dialysis. Hemodialysis at dialysis centers is generally performed three times per week. Peritoneal dialysis is done at home and is usually done several times daily. continued on next slide
47 Chapter Review Major complications in patients with end-stage renal disease can occur after the patient has missed a dialysis appointment, from infections, or as a result of bleeding from hemodialysis access sites.
48 Remember Blood has specific cellular components. Abnormal blood cells can significantly affect patients. The renal system is critical to maintaining homeostasis. Renal failure can be chronic or acute. End stage renal disease is managed through dialysis.
49 Questions to Consider Does my patient have a history of sickle cell disease or ESRD? Does my patient have an A-V fistula? Will I need to make an early request for ALS because of complications from a missed dialysis appointment?
50 Critical Thinking You have a patient who is transported routinely for dialysis three times per week. She was sick and canceled the trip yesterday. Now she calls saying she can't breathe and feels like she is going to die. Is it possible that she has a legitimate complaint after missing dialysis by only one day?
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