Hematologic & Oncologic

Hematopoietic stem cell transplantation replaces diseased or destroyed marrow with stem cells that are autologous, from the client themselves, or allogeneic, from a donor matched by human leukocyte antigen typing. Preparation includes HLA typing, comprehensive assessment of organ function, treatment of any existing infection, dental evaluation to eliminate occult foci, central venous access placement, fertility counseling since conditioning frequently causes infertility, and psychosocial preparation for a prolonged admission. Conditioning uses high-dose chemotherapy with or without total body irradiation to eradicate malignant cells and suppress the immune system sufficiently to prevent graft rejection, and it produces profound pancytopenia. The period between conditioning and engraftment carries the greatest risk, with neutropenia lasting two to four weeks, during which protective measures, prophylactic antimicrobials and transfusion support are used and fever is treated as an emergency. Allogeneic recipients additionally face graft-versus-host disease, in which donor immune cells attack recipient tissue — skin, gut and liver most often — managed with immunosuppression. Live vaccines are contraindicated during immunosuppression and the immunization schedule is restarted long after recovery.

Vesicant chemotherapy causes tissue necrosis on extravasation, and the catheter is retained initially so residual drug can be aspirated and an antidote instilled.

Neutrophils mediate the acute response to bacterial infection, so their depletion both raises risk and removes the usual signs.

Goals of care determine which treatment options are worth discussing, so goals are established before options are debated. The nurse is frequently the only member of the team who has heard a client express doubt, exhaustion or a wish to stop, because those things are said during ordinary care rather than in a consultation. Carrying that into the interdisciplinary conference — before the plan forms rather than after — is advocacy performed through coordination. Documenting it for later reading, or asking the client to raise it themselves with the most senior person present, both let the plan form without it.

Neutropenia removes the inflammatory response, so the usual local signs of infection — redness, swelling, purulence — may never appear. Fever can therefore be the entire presentation, and with an absolute neutrophil count below roughly 0.5 x 10^9/L the progression from fever to septic shock is measured in hours. Neutropenic fever is managed as an emergency: cultures are taken and broad-spectrum antibiotics started without waiting for a source or a result. Nausea, alopecia and moderate thrombocytopenia are expected effects of chemotherapy and do not carry the same urgency.

Nutrition during chemotherapy is complicated by anorexia, nausea and vomiting, taste and smell alteration, mucositis, xerostomia, diarrhea or constipation, and fatigue, and weight loss worsens both tolerance of treatment and outcomes. Taste changes commonly include a metallic taste and blunting, addressed with plastic utensils, marinades, herbs, tart flavors and trying foods that were not previously favorites. Nausea is reduced by small frequent meals, cool or room-temperature foods with less aroma, dry starchy foods, avoiding strong cooking smells, and taking the largest meal at the time of day when appetite is best, usually the morning. Antiemetics are given prophylactically before treatment rather than in response to symptoms. Learned food aversions form readily when a food is eaten shortly before nausea, so favorite foods are avoided around treatment. Mucositis calls for soft, moist, non-acidic and non-spicy food and meticulous oral care. In neutropenia, food safety matters: thorough cooking, careful washing, avoiding unpasteurized products and, in some centers, restriction of fresh fruit and vegetables.

Lung cancer is often asymptomatic in its early stages, which is the central reason for its poor survival: symptoms tend to appear once the tumor is large, has invaded local structures, or has spread. Presenting features include a chronic cough or a change in an existing one, hemoptysis, dyspnea, chest or shoulder pain, recurrent or non-resolving pneumonia in the same location, and wheeze from partial airway obstruction. Local invasion produces its own signs — hoarseness from recurrent laryngeal nerve involvement, dysphagia from esophageal compression, and facial and upper limb swelling from superior vena cava obstruction. Systemic features include weight loss, anorexia and fatigue, and some tumors produce paraneoplastic syndromes such as inappropriate antidiuretic hormone secretion or hypercalcemia. Smoking accounts for the large majority of cases, and risk falls after cessation without returning to that of a never-smoker, so cessation counseling remains worthwhile at any age. Screening by low-dose CT is offered to high-risk adults on the basis of age and smoking history.

External beam radiation therapy delivers ionizing radiation from a machine outside the body, and the client retains no radioactivity afterwards, so no precautions are required for family, visitors or staff between sessions. This differs from sealed source brachytherapy, where an implanted source requires time, distance and shielding precautions while in place, and from unsealed radioisotope therapy, where body fluids are radioactive for a period and specific instructions apply — the distinction is the source of most family anxiety and should be addressed explicitly. Skin reaction within the treatment field is the commonest local effect, ranging from erythema and dryness to moist desquamation, and care involves gentle washing with lukewarm water and mild soap, patting dry, preserving alignment markings, avoiding unprescribed lotions, powders, deodorants, adhesive tape, shaving and friction, wearing loose soft clothing, and protecting from sun and temperature extremes both during treatment and afterwards, since photosensitivity persists. Systemic effects include fatigue, which is near-universal and cumulative, and site-specific effects such as mucositis, xerostomia, nausea or diarrhea. Bone marrow suppression occurs where large marrow-bearing areas are treated.

Hazardous drug spills are managed by containment before clean-up. Access to the area is restricted first so the material is not tracked across the unit, and the designated cytotoxic spill kit supplies the protective equipment, absorbent pads and sealed disposal containers that ordinary supplies do not. Cytotoxic waste, including contaminated linen, gloves and the client's excreta for a period after administration, is segregated into designated containers rather than general clinical waste. Untrained staff must not be sent into a spill, and disturbing the liquid without protection risks aerosolization and skin absorption.

Hematopoietic stem cell transplantation replaces diseased or destroyed marrow with stem cells that are autologous, from the client themselves, or allogeneic, from a donor matched by human leukocyte antigen typing. Preparation includes HLA typing, comprehensive assessment of organ function, treatment of any existing infection, dental evaluation to eliminate occult foci, central venous access placement, fertility counseling since conditioning frequently causes infertility, and psychosocial preparation for a prolonged admission. Conditioning uses high-dose chemotherapy with or without total body irradiation to eradicate malignant cells and suppress the immune system sufficiently to prevent graft rejection, and it produces profound pancytopenia. The period between conditioning and engraftment carries the greatest risk, with neutropenia lasting two to four weeks, during which protective measures, prophylactic antimicrobials and transfusion support are used and fever is treated as an emergency. Allogeneic recipients additionally face graft-versus-host disease, in which donor immune cells attack recipient tissue — skin, gut and liver most often — managed with immunosuppression. Live vaccines are contraindicated during immunosuppression and the immunization schedule is restarted long after recovery.

Neutrophils mediate the acute response to bacterial infection, so their depletion both raises risk and removes the usual signs.

Neutropenia removes the inflammatory response, so the usual local signs of infection — redness, swelling, purulence — may never appear. Fever can therefore be the entire presentation, and with an absolute neutrophil count below roughly 0.5 x 10^9/L the progression from fever to septic shock is measured in hours. Neutropenic fever is managed as an emergency: cultures are taken and broad-spectrum antibiotics started without waiting for a source or a result. Nausea, alopecia and moderate thrombocytopenia are expected effects of chemotherapy and do not carry the same urgency.

Transfusion reactions range from mild allergic to fatal hemolytic, and the initial response is to stop the infusion and maintain access with saline via new tubing.

Vesicant chemotherapy causes tissue necrosis on extravasation, and the catheter is retained initially so residual drug can be aspirated and an antidote instilled.

Neutropenia removes the inflammatory response, so the usual local signs of infection — redness, swelling, purulence — may never appear. Fever can therefore be the entire presentation, and with an absolute neutrophil count below roughly 0.5 x 10^9/L the progression from fever to septic shock is measured in hours. Neutropenic fever is managed as an emergency: cultures are taken and broad-spectrum antibiotics started without waiting for a source or a result. Nausea, alopecia and moderate thrombocytopenia are expected effects of chemotherapy and do not carry the same urgency.

Lung cancer is often asymptomatic in its early stages, which is the central reason for its poor survival: symptoms tend to appear once the tumor is large, has invaded local structures, or has spread. Presenting features include a chronic cough or a change in an existing one, hemoptysis, dyspnea, chest or shoulder pain, recurrent or non-resolving pneumonia in the same location, and wheeze from partial airway obstruction. Local invasion produces its own signs — hoarseness from recurrent laryngeal nerve involvement, dysphagia from esophageal compression, and facial and upper limb swelling from superior vena cava obstruction. Systemic features include weight loss, anorexia and fatigue, and some tumors produce paraneoplastic syndromes such as inappropriate antidiuretic hormone secretion or hypercalcemia. Smoking accounts for the large majority of cases, and risk falls after cessation without returning to that of a never-smoker, so cessation counseling remains worthwhile at any age. Screening by low-dose CT is offered to high-risk adults on the basis of age and smoking history.

Iron absorption is enhanced by vitamin C and inhibited by calcium, and iron overdose is a leading cause of fatal childhood poisoning.

The reticulocyte count measures erythropoiesis directly, which makes it the most useful single test for separating the two broad causes of anemia. Interpretation is always relative to the degree of anemia: a count in the normal range sounds reassuring but is inappropriately low in a client who is significantly anemic, because a healthy marrow should be over-producing. A high count points to blood loss or to hemolysis, where cells are being destroyed faster than they are made. A low count points to a production problem — deficiency of iron, vitamin B12 or folate, marrow suppression from chemotherapy or infiltration, or insufficient erythropoietin in chronic kidney disease. It is also how response to treatment is judged: after iron or B12 is started, a rising reticulocyte count within about a week shows the marrow has what it was missing, and it rises before the hemoglobin does.

Most fatal transfusion reactions arise from misidentification, and severe reactions typically begin within the first 15 minutes.

Disseminated intravascular coagulation is an acquired disorder in which widespread activation of coagulation produces microthrombi throughout the circulation while simultaneously consuming platelets and clotting factors, so thrombosis and hemorrhage occur together. It is always secondary, with common precipitants including sepsis, major trauma, burns, obstetric complications such as abruption and amniotic fluid embolism, malignancy, and transfusion reaction. Clinically the client bleeds from puncture sites, gums, the gastrointestinal and urinary tracts and surgical wounds, with purpura, petechiae and ecchymosis, while microvascular occlusion produces acral cyanosis, skin necrosis and progressive organ dysfunction affecting kidneys, lungs and brain. The laboratory picture is characteristic: prolonged prothrombin time and aPTT, falling platelet count, falling fibrinogen and markedly raised D-dimer and fibrin degradation products. Management centers on treating the underlying cause, since the coagulopathy will not resolve without it, alongside supportive replacement with platelets, fresh frozen plasma and cryoprecipitate guided by bleeding and laboratory values. Nursing care involves bleeding precautions, minimizing punctures, gentle handling, close neurological and respiratory observation, and accurate intake and output.

Warfarin blocks the vitamin K-dependent synthesis of factors II, VII, IX and X in the liver. Because it acts on production rather than on circulating factors, the effect follows the half-lives of what is already there, and a therapeutic effect takes several days regardless of dose — which is why loading does not speed it up and why the heparin bridge exists. It is monitored by INR, reversed with vitamin K, and interacts with a long list of drugs and with dietary vitamin K intake; the teaching point is consistency of intake rather than avoiding green vegetables. Heparin, by contrast, potentiates antithrombin, acts within minutes, is monitored by aPTT, and is reversed with protamine. Holding those two columns apart — monitoring test, reversal agent, onset, route — is what most anticoagulation questions test, because each drug's facts make plausible-sounding distractors for the other.

Warfarin is monitored by INR against a target of 2 to 3, reversed by vitamin K, and destabilized by dietary and drug changes.

Most fatal transfusion reactions arise from misidentification, and severe reactions typically begin within the first 15 minutes.

Transfusion reactions range from mild allergic to fatal hemolytic, and the initial response is to stop the infusion and maintain access with saline via new tubing.

Disseminated intravascular coagulation is an acquired disorder in which widespread activation of coagulation produces microthrombi throughout the circulation while simultaneously consuming platelets and clotting factors, so thrombosis and hemorrhage occur together. It is always secondary, with common precipitants including sepsis, major trauma, burns, obstetric complications such as abruption and amniotic fluid embolism, malignancy, and transfusion reaction. Clinically the client bleeds from puncture sites, gums, the gastrointestinal and urinary tracts and surgical wounds, with purpura, petechiae and ecchymosis, while microvascular occlusion produces acral cyanosis, skin necrosis and progressive organ dysfunction affecting kidneys, lungs and brain. The laboratory picture is characteristic: prolonged prothrombin time and aPTT, falling platelet count, falling fibrinogen and markedly raised D-dimer and fibrin degradation products. Management centers on treating the underlying cause, since the coagulopathy will not resolve without it, alongside supportive replacement with platelets, fresh frozen plasma and cryoprecipitate guided by bleeding and laboratory values. Nursing care involves bleeding precautions, minimizing punctures, gentle handling, close neurological and respiratory observation, and accurate intake and output.

Warfarin blocks the vitamin K-dependent synthesis of factors II, VII, IX and X in the liver. Because it acts on production rather than on circulating factors, the effect follows the half-lives of what is already there, and a therapeutic effect takes several days regardless of dose — which is why loading does not speed it up and why the heparin bridge exists. It is monitored by INR, reversed with vitamin K, and interacts with a long list of drugs and with dietary vitamin K intake; the teaching point is consistency of intake rather than avoiding green vegetables. Heparin, by contrast, potentiates antithrombin, acts within minutes, is monitored by aPTT, and is reversed with protamine. Holding those two columns apart — monitoring test, reversal agent, onset, route — is what most anticoagulation questions test, because each drug's facts make plausible-sounding distractors for the other.

Warfarin is monitored by INR against a target of 2 to 3, reversed by vitamin K, and destabilized by dietary and drug changes.

Goals of care determine which treatment options are worth discussing, so goals are established before options are debated. The nurse is frequently the only member of the team who has heard a client express doubt, exhaustion or a wish to stop, because those things are said during ordinary care rather than in a consultation. Carrying that into the interdisciplinary conference — before the plan forms rather than after — is advocacy performed through coordination. Documenting it for later reading, or asking the client to raise it themselves with the most senior person present, both let the plan form without it.

Goals of care determine which treatment options are worth discussing, so goals are established before options are debated. The nurse is frequently the only member of the team who has heard a client express doubt, exhaustion or a wish to stop, because those things are said during ordinary care rather than in a consultation. Carrying that into the interdisciplinary conference — before the plan forms rather than after — is advocacy performed through coordination. Documenting it for later reading, or asking the client to raise it themselves with the most senior person present, both let the plan form without it.

Iron absorption is enhanced by vitamin C and inhibited by calcium, and iron overdose is a leading cause of fatal childhood poisoning.

Hazardous drug spills are managed by containment before clean-up. Access to the area is restricted first so the material is not tracked across the unit, and the designated cytotoxic spill kit supplies the protective equipment, absorbent pads and sealed disposal containers that ordinary supplies do not. Cytotoxic waste, including contaminated linen, gloves and the client's excreta for a period after administration, is segregated into designated containers rather than general clinical waste. Untrained staff must not be sent into a spill, and disturbing the liquid without protection risks aerosolization and skin absorption.

Hematopoietic stem cell transplantation replaces diseased or destroyed marrow with stem cells that are autologous, from the client themselves, or allogeneic, from a donor matched by human leukocyte antigen typing. Preparation includes HLA typing, comprehensive assessment of organ function, treatment of any existing infection, dental evaluation to eliminate occult foci, central venous access placement, fertility counseling since conditioning frequently causes infertility, and psychosocial preparation for a prolonged admission. Conditioning uses high-dose chemotherapy with or without total body irradiation to eradicate malignant cells and suppress the immune system sufficiently to prevent graft rejection, and it produces profound pancytopenia. The period between conditioning and engraftment carries the greatest risk, with neutropenia lasting two to four weeks, during which protective measures, prophylactic antimicrobials and transfusion support are used and fever is treated as an emergency. Allogeneic recipients additionally face graft-versus-host disease, in which donor immune cells attack recipient tissue — skin, gut and liver most often — managed with immunosuppression. Live vaccines are contraindicated during immunosuppression and the immunization schedule is restarted long after recovery.

Nutrition during chemotherapy is complicated by anorexia, nausea and vomiting, taste and smell alteration, mucositis, xerostomia, diarrhea or constipation, and fatigue, and weight loss worsens both tolerance of treatment and outcomes. Taste changes commonly include a metallic taste and blunting, addressed with plastic utensils, marinades, herbs, tart flavors and trying foods that were not previously favorites. Nausea is reduced by small frequent meals, cool or room-temperature foods with less aroma, dry starchy foods, avoiding strong cooking smells, and taking the largest meal at the time of day when appetite is best, usually the morning. Antiemetics are given prophylactically before treatment rather than in response to symptoms. Learned food aversions form readily when a food is eaten shortly before nausea, so favorite foods are avoided around treatment. Mucositis calls for soft, moist, non-acidic and non-spicy food and meticulous oral care. In neutropenia, food safety matters: thorough cooking, careful washing, avoiding unpasteurized products and, in some centers, restriction of fresh fruit and vegetables.

Iron absorption is enhanced by vitamin C and inhibited by calcium, and iron overdose is a leading cause of fatal childhood poisoning.

Hazardous drug spills are managed by containment before clean-up. Access to the area is restricted first so the material is not tracked across the unit, and the designated cytotoxic spill kit supplies the protective equipment, absorbent pads and sealed disposal containers that ordinary supplies do not. Cytotoxic waste, including contaminated linen, gloves and the client's excreta for a period after administration, is segregated into designated containers rather than general clinical waste. Untrained staff must not be sent into a spill, and disturbing the liquid without protection risks aerosolization and skin absorption.

Neutropenia removes the inflammatory response, so the usual local signs of infection — redness, swelling, purulence — may never appear. Fever can therefore be the entire presentation, and with an absolute neutrophil count below roughly 0.5 x 10^9/L the progression from fever to septic shock is measured in hours. Neutropenic fever is managed as an emergency: cultures are taken and broad-spectrum antibiotics started without waiting for a source or a result. Nausea, alopecia and moderate thrombocytopenia are expected effects of chemotherapy and do not carry the same urgency.

External beam radiation therapy delivers ionizing radiation from a machine outside the body, and the client retains no radioactivity afterwards, so no precautions are required for family, visitors or staff between sessions. This differs from sealed source brachytherapy, where an implanted source requires time, distance and shielding precautions while in place, and from unsealed radioisotope therapy, where body fluids are radioactive for a period and specific instructions apply — the distinction is the source of most family anxiety and should be addressed explicitly. Skin reaction within the treatment field is the commonest local effect, ranging from erythema and dryness to moist desquamation, and care involves gentle washing with lukewarm water and mild soap, patting dry, preserving alignment markings, avoiding unprescribed lotions, powders, deodorants, adhesive tape, shaving and friction, wearing loose soft clothing, and protecting from sun and temperature extremes both during treatment and afterwards, since photosensitivity persists. Systemic effects include fatigue, which is near-universal and cumulative, and site-specific effects such as mucositis, xerostomia, nausea or diarrhea. Bone marrow suppression occurs where large marrow-bearing areas are treated.

Disseminated intravascular coagulation is an acquired disorder in which widespread activation of coagulation produces microthrombi throughout the circulation while simultaneously consuming platelets and clotting factors, so thrombosis and hemorrhage occur together. It is always secondary, with common precipitants including sepsis, major trauma, burns, obstetric complications such as abruption and amniotic fluid embolism, malignancy, and transfusion reaction. Clinically the client bleeds from puncture sites, gums, the gastrointestinal and urinary tracts and surgical wounds, with purpura, petechiae and ecchymosis, while microvascular occlusion produces acral cyanosis, skin necrosis and progressive organ dysfunction affecting kidneys, lungs and brain. The laboratory picture is characteristic: prolonged prothrombin time and aPTT, falling platelet count, falling fibrinogen and markedly raised D-dimer and fibrin degradation products. Management centers on treating the underlying cause, since the coagulopathy will not resolve without it, alongside supportive replacement with platelets, fresh frozen plasma and cryoprecipitate guided by bleeding and laboratory values. Nursing care involves bleeding precautions, minimizing punctures, gentle handling, close neurological and respiratory observation, and accurate intake and output.

Warfarin is monitored by INR against a target of 2 to 3, reversed by vitamin K, and destabilized by dietary and drug changes.