chapter 44 lehne

Hydrochlorothiazide

Causes hypokalemia (decreased potassium), can cause hyperglycemia, can cause hyperuricemia, causes fluid/water loss, decreases blood volume.

Spironolactone

Causes hyperkalemia (increased potassium), promotes sodium and water excretion, functions as a potassium-sparing diuretic.

Monitoring for Hydrochlorothiazide

Patients need monitoring for low potassium levels, blood glucose levels, and hydration status.

Monitoring for Spironolactone

Patients need monitoring for high potassium levels and should not be given to patients with existing hyperkalemia. Use caution when combining with ACE inhibitors, ARBs, or other potassium-sparing medications.

Furosemide + Aminoglycosides Interaction

Increased risk of ototoxicity and enhanced nephrotoxicity; requires close monitoring of kidney function.

Furosemide + Cephalosporins Interaction

May increase nephrotoxicity risk; monitor renal function carefully.

Furosemide + Vancomycin Interaction

Increased risk of ototoxicity and enhanced nephrotoxicity potential; regular monitoring of drug levels needed.

Nursing Considerations for Furosemide

Monitor serum creatinine and BUN, assess hearing function, watch for signs of vestibular dysfunction, document intake and output, monitor electrolyte levels.

Prevention Strategies for Furosemide Interactions

Space administration times when possible, use lowest effective doses, regular assessment of renal function, report signs of ototoxicity immediately.

Major Adverse Effects of Furosemide

Hypotension caused by volume loss and venous smooth muscle relaxation, reduced venous return to heart, symptoms include dizziness, light-headedness, fainting.

Postural Hypotension

Risk increases with position changes; patient should rise slowly and may need to sit/lie down if symptoms occur.

Volume-Related Effects of Furosemide

Fluid and electrolyte imbalances, significant fluid loss, risk of dehydration.

Required Monitoring for Furosemide

Blood pressure readings, postural blood pressure changes, fluid balance, electrolyte levels.

Patient Teaching for Furosemide

Monitor blood pressure at home, report substantial BP drops, recognize hypotension symptoms.

Primary Indications for Furosemide

Pulmonary Edema with CHF, Rapid fluid mobilization needed, Emergency situations requiring quick diuresis, Resistant Edema, Hepatic origin, Cardiac origin, Renal origin, Cases unresponsive to less potent diuretics, Severe Renal Impairment, Effective even with low renal blood flow, Works when GFR is decreased, Preferred over thiazides in renal dysfunction, Difficult-to-Control Hypertension, When other diuretics prove insufficient, Reserved for resistant cases, May be combined with thiazides if needed.

Clinical Considerations for Furosemide

Used when rapid/massive fluid removal required, Reserved for situations where thiazides insufficient, Not first-line for routine hypertension, Particularly useful in compromised renal function.

Primary Indications for Mannitol

Prevention of Acute Renal Failure, Used when blood flow to kidney is decreased, Helps maintain urine flow in low filtrate conditions, Effective in dehydration and severe hypotension, Beneficial in hypovolemic shock, Treatment of Increased Intracranial Pressure (ICP), Reduces cerebral edema, Improves cerebral blood flow, Enhances oxygen delivery, Creates vascular osmotic gradient, Moves fluid from tissues into blood vessels.

Clinical Considerations for Mannitol

Must be administered intravenously, Onset: 30-60 minutes, Duration: 6-8 hours, Contraindicated in renal disease, Increased serum osmolality.

Monitoring Requirements for Mannitol

Fluid status, Electrolyte balance, Blood pressure, Neurological status (when used for ICP).

Major Adverse Effects of Hydrochlorothiazide

Electrolyte Imbalances, Hypokalemia (primary concern), Requires monitoring of potassium levels, May need potassium supplementation, Metabolic Effects, Hyperglycemia, Hyperuricemia, Blood glucose monitoring needed in diabetic patients, Volume-Related Issues, Dehydration, Volume depletion, Orthostatic hypotension.

Prevention/Management of Hydrochlorothiazide Effects

Encourage potassium-rich foods, Consider potassium supplements, Use potassium-sparing diuretic combinations, Monitor fluid status, Regular electrolyte checks, Blood glucose monitoring.

Patient Teaching for Hydrochlorothiazide

Report signs of dehydration, Maintain adequate fluid intake, Include potassium-rich foods in diet, Rise slowly from sitting/lying positions, Monitor blood sugar if diabetic.